CINXE.COM

<!DOCTYPE html> <html lang="en" dir="ltr"> <head>  <script async src="https://www.googletagmanager.com/gtag/js?id=G-P63WKM1TM1"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-P63WKM1TM1'); </script>  <script type="text/javascript" > (function(m,e,t,r,i,k,a){m[i]=m[i]||function(){(m[i].a=m[i].a||[]).push(arguments)}; m[i].l=1*new Date(); for (var j = 0; j < document.scripts.length; j++) {if (document.scripts[j].src === r) { return; }} k=e.createElement(t),a=e.getElementsByTagName(t)[0],k.async=1,k.src=r,a.parentNode.insertBefore(k,a)}) (window, document, "script", "https://mc.yandex.ru/metrika/tag.js", "ym"); ym(55165297, "init", { clickmap:false, trackLinks:true, accurateTrackBounce:true, webvisor:false }); </script> <noscript><div><img src="https://mc.yandex.ru/watch/55165297" style="position:absolute; left:-9999px;" alt="" /></div></noscript>    <title>Search results for: cooling rate</title> <meta name="description" content="Search results for: cooling rate"> <meta name="keywords" content="cooling rate"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="cooling rate" name="q" aria-label="Search"> <button class="btn btn-light my-2 my-sm-0" type="submit"><i class="fas fa-search"></i></button> </form> </div> <div class="collapse navbar-collapse mt-1" id="navbarMenu"> <ul class="navbar-nav ml-auto align-items-center" id="mainNavMenu"> <li class="nav-item"> <a class="nav-link" href="https://waset.org/conferences" title="Conferences in 2024/2025/2026">Conferences</a> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/disciplines" title="Disciplines">Disciplines</a> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/committees" rel="nofollow">Committees</a> </li> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="#" id="navbarDropdownPublications" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> Publications </a> <div class="dropdown-menu" aria-labelledby="navbarDropdownPublications"> <a class="dropdown-item" href="https://publications.waset.org/abstracts">Abstracts</a> <a class="dropdown-item" href="https://publications.waset.org">Periodicals</a> <a class="dropdown-item" href="https://publications.waset.org/archive">Archive</a> </div> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/page/support" title="Support">Support</a> </li> </ul> </div> </div> </nav> </div> </header> <main> <div class="container mt-4"> <div class="row"> <div class="col-md-9 mx-auto"> <form method="get" action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="cooling rate"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 8823</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: cooling rate</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8823</span> 3D CFD Modelling of the Airflow and Heat Transfer in Cold Room Filled with Dates </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zina%20Ghiloufi">Zina Ghiloufi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tahar%20Khir"> Tahar Khir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A transient three-dimensional computational fluid dynamics (CFD) model is developed to determine the velocity and temperature distribution in different positions cold room during pre-cooling of dates. The turbulence model used is the k-ω Shear Stress Transport (SST) with the standard wall function, the air. The numerical results obtained show that cooling rate is not uniform inside the room; the product at the medium of room has a slower cooling rate. This cooling heterogeneity has a large effect on the energy consumption during cold storage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CFD" title="CFD">CFD</a>, <a href="https://publications.waset.org/abstracts/search?q=cold%20room" title=" cold room"> cold room</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20rate" title=" cooling rate"> cooling rate</a>, <a href="https://publications.waset.org/abstracts/search?q=dDates" title=" dDates"> dDates</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20simulation" title=" numerical simulation"> numerical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=k-%CF%89%20%28SST%29" title=" k-ω (SST)"> k-ω (SST)</a> </p> <a href="https://publications.waset.org/abstracts/90986/3d-cfd-modelling-of-the-airflow-and-heat-transfer-in-cold-room-filled-with-dates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90986.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">235</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8822</span> Optimization Analysis of Controlled Cooling Process for H-Shape Steam Beams</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jiin-Yuh%20Jang">Jiin-Yuh Jang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Feng%20Gan"> Yu-Feng Gan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to improve the comprehensive mechanical properties of the steel, the cooling rate, and the temperature distribution must be controlled in the cooling process. A three-dimensional numerical model for the prediction of the heat transfer coefficient distribution of H-beam in the controlled cooling process was performed in order to obtain the uniform temperature distribution and minimize the maximum stress and the maximum deformation after the controlled cooling. An algorithm developed with a simplified conjugated-gradient method was used as an optimizer to optimize the heat transfer coefficient distribution. The numerical results showed that, for the case of air cooling 5 seconds followed by water cooling 6 seconds with uniform the heat transfer coefficient, the cooling rate is 15.5 (℃/s), the maximum temperature difference is 85℃, the maximum the stress is 125 MPa, and the maximum deformation is 1.280 mm. After optimize the heat transfer coefficient distribution in control cooling process with the same cooling time, the cooling rate is increased to 20.5 (℃/s), the maximum temperature difference is decreased to 52℃, the maximum stress is decreased to 82MPa and the maximum deformation is decreased to 1.167mm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=controlled%20cooling" title="controlled cooling">controlled cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=H-Beam" title=" H-Beam"> H-Beam</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20stress" title=" thermal stress "> thermal stress </a> </p> <a href="https://publications.waset.org/abstracts/62779/optimization-analysis-of-controlled-cooling-process-for-h-shape-steam-beams" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62779.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">371</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8821</span> Effect of Composition and Cooling Rate on the Solidification Structure of Al-Er Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jing%20Ning">Jing Ning</a>, <a href="https://publications.waset.org/abstracts/search?q=Kunyuan%20Gao"> Kunyuan Gao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The microstructure and phase structure of Al-Er alloys with Er content of 10, 20, 30wt% at cooling rate of 60, 40 and 5℃/h were analyzed using scanning electron microscope (SEM) and X-ray diffraction (XRD). Experimental results showed that for solidification of the hypereutectic Al-Er alloys at different conditions, a halo of α-Al appeared around the primary Al₃Er phase. Analysis of the solidification process indicated that after the primary Al₃Er phase formed, the composition of supercooled liquid phase located outside the coupled zone of eutectic growth below the eutectic line, which leaded to the formation of Al halo. With the increase of Er content, the blocky primary Al₃Er phase expanded from 200μm to 1mm in size. With the decrease of cooling rate, the morphology and phase structure of alloy were different. At the cooling rate of 60℃/h, it was obtained the primary Al3Er phase with L1₂ structure, whose profile was straight. Meanwhile, the eutectic structure was flocculent. At the quite slow cooling rate of 5℃/h, it was obtained the primary Al₃Er phase with hR20 structure with irregular jagged profile, and the eutectic structure was approximately strip-shaped. These characteristics were closely related to the cooling rate of solidification. The XRD analysis showed that for Al₃Er phase, the lattice constant a of L1₂ structure was 4.2158Å, and a, c of hR20 structure were 6.0321Å and 35.6290Å, respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Al-Er%20alloy" title="Al-Er alloy">Al-Er alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=composition" title=" composition"> composition</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20rate" title=" cooling rate"> cooling rate</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure" title=" microstructure"> microstructure</a> </p> <a href="https://publications.waset.org/abstracts/165095/effect-of-composition-and-cooling-rate-on-the-solidification-structure-of-al-er-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165095.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">108</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8820</span> Review of Modern Gas turbine Blade Cooling Technologies used in Aircraft</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arun%20Prasath%20Subramanian">Arun Prasath Subramanian</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The turbine Inlet Temperature is an important parameter which determines the efficiency of a gas turbine engine. The increase in this parameter is limited by material constraints of the turbine blade.The modern Gas turbine blade has undergone a drastic change from a simple solid blade to a modern multi-pass blade with internal and external cooling techniques. This paper aims to introduce the reader the concept of turbine blade cooling, the classification of techniques and further explain some of the important internal cooling technologies used in a modern gas turbine blade along with the various factors that affect the cooling effectiveness. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gas%20turbine%20blade" title="gas turbine blade">gas turbine blade</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20technologies" title=" cooling technologies"> cooling technologies</a>, <a href="https://publications.waset.org/abstracts/search?q=internal%20cooling" title=" internal cooling"> internal cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=pin-fin%20cooling" title=" pin-fin cooling"> pin-fin cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=jet%20impingement%20cooling" title=" jet impingement cooling"> jet impingement cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=rib%20turbulated%20cooling" title=" rib turbulated cooling"> rib turbulated cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=metallic%20foam%20cooling" title=" metallic foam cooling"> metallic foam cooling</a> </p> <a href="https://publications.waset.org/abstracts/39117/review-of-modern-gas-turbine-blade-cooling-technologies-used-in-aircraft" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39117.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">319</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8819</span> Numerical Simulation of Effect of Various Rib Configurations on Enhancing Heat Transfer of Matrix Cooling Channel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seok%20Min%20Choi">Seok Min Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Minho%20Bang"> Minho Bang</a>, <a href="https://publications.waset.org/abstracts/search?q=Seuong%20Yun%20Kim"> Seuong Yun Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyungmin%20Lee"> Hyungmin Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Won-Gu%20Joo"> Won-Gu Joo</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyung%20Hee%20Cho"> Hyung Hee Cho</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The matrix cooling channel was used for gas turbine blade cooling passage. The matrix cooling structure is useful for the structure stability however the cooling performance of internal cooling channel was not enough for cooling. Therefore, we designed the rib configurations in the matrix cooling channel to enhance the cooling performance. The numerical simulation was conducted to analyze cooling performance of rib configured matrix cooling channel. Three different rib configurations were used which are vertical rib, angled rib and c-type rib. Three configurations were adopted in two positions of matrix cooling channel which is one fourth and three fourth of channel. The result shows that downstream rib has much higher cooling performance than upstream rib. Furthermore, the angled rib in the channel has much higher cooling performance than vertical rib. This is because; the angled rib improves the swirl effect of matrix cooling channel more effectively. The friction factor was increased with the installation of rib. However, the thermal performance was increased with the installation of rib in the matrix cooling channel. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=matrix%20cooling" title="matrix cooling">matrix cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=rib" title=" rib"> rib</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer" title=" heat transfer"> heat transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20turbine" title=" gas turbine"> gas turbine</a> </p> <a href="https://publications.waset.org/abstracts/80524/numerical-simulation-of-effect-of-various-rib-configurations-on-enhancing-heat-transfer-of-matrix-cooling-channel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80524.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">460</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8818</span> Determination of the Cooling Rate Dependency of High Entropy Alloys Using a High-Temperature Drop-on-Demand Droplet Generator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Saeedeh%20Imani%20Moqadam">Saeedeh Imani Moqadam</a>, <a href="https://publications.waset.org/abstracts/search?q=Ilya%20Bobrov"> Ilya Bobrov</a>, <a href="https://publications.waset.org/abstracts/search?q=J%C3%A9r%C3%A9my%20Epp"> Jérémy Epp</a>, <a href="https://publications.waset.org/abstracts/search?q=Nils%20Ellendt"> Nils Ellendt</a>, <a href="https://publications.waset.org/abstracts/search?q=Lutz%20M%C3%A4dler"> Lutz Mädler</a> </p> <p class="card-text"><strong>Abstract:</strong></p> High entropy alloys (HEAs), having adjustable properties and enhanced stability compared with intermetallic compounds, are solid solution alloys that contain more than five principal elements with almost equal atomic percentage. The concept of producing such alloys pave the way for developing advanced materials with unique properties. However, the synthesis of such alloys may require advanced processes with high cooling rates depending on which alloy elements are used. In this study, the micro spheres of different diameters of HEAs were generated via a drop-on-demand droplet generator and subsequently solidified during free-fall in an argon atmosphere. Such droplet generators can generate individual droplets with high reproducibility regarding droplet diameter, trajectory and cooling while avoiding any interparticle momentum or thermal coupling. Metallography as well as X-ray diffraction investigations for each diameter of the generated metallic droplets where then carried out to obtain information about the microstructural state. To calculate the cooling rate of the droplets, a droplet cooling model was developed and validated using model alloys such as CuSn%6 and AlCu%4.5 for which a correlation of secondary dendrite arm spacing (SDAS) and cooling rate is well-known. Droplets were generated from these alloys and their SDAS was determined using quantitative metallography. The cooling rate was then determined from the SDAS and used to validate the cooling rates obtained from the droplet cooling model. The application of that model on the HEA then leads to the cooling rate dependency and hence to the identification of process windows for the synthesis of these alloys. These process windows were then compared with cooling rates obtained in processes such as powder production, spray forming, selective laser melting and casting to predict if a synthesis is possible with these processes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cooling%20rate" title="cooling rate">cooling rate</a>, <a href="https://publications.waset.org/abstracts/search?q=drop-on-demand" title=" drop-on-demand"> drop-on-demand</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20entropy%20alloys" title=" high entropy alloys"> high entropy alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure" title=" microstructure"> microstructure</a>, <a href="https://publications.waset.org/abstracts/search?q=single%20droplet%20generation" title=" single droplet generation"> single droplet generation</a>, <a href="https://publications.waset.org/abstracts/search?q=X-ray%20Diffractometry" title=" X-ray Diffractometry"> X-ray Diffractometry</a> </p> <a href="https://publications.waset.org/abstracts/78280/determination-of-the-cooling-rate-dependency-of-high-entropy-alloys-using-a-high-temperature-drop-on-demand-droplet-generator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78280.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">211</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8817</span> Comparative Analysis of Internal Combustion Engine Cooling Fins Using Ansys Software</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aakash%20Kumar%20R.%20G.">Aakash Kumar R. G.</a>, <a href="https://publications.waset.org/abstracts/search?q=Anees%20K.%20Ahamed"> Anees K. Ahamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Raj%20M.%20Mohan"> Raj M. Mohan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Effective engine cooling can improve the engine’s life and efficacy. The design of the fin of the cylinder head and block determines the cooling mechanism of air cooled engine. The heat conduction takes place through the engine parts and convection of heat from the surface of the fins takes place with air as the heat transferring medium. The air surrounding the cooling fins helps in removal of heat built up by the air cooled engine. If the heat removal rate is inadequate, it will result in lower engine efficiency and high thermal stresses in the engine. The main drawback of the air cooled engine is the low heat transfer rate of the cooling fins .This work is based on scrutiny of previous researches that involves enhancing of heat transfer rate of cooling fins. The current research is about augmentation of heat transfer rate of longitudinal rectangular fin profiles by varying the length of the fin and diameter of holes on the fins. Thermal and flow analysis is done for two different models of fins. One is simple fin without holes and the other is perforated (consist of holes). It can be inferred from the research that the fins with holes have a higher fin efficiency than the fins without holes. The geometry of the fin is done in CREO. The heat transfer analysis is done using ANSYS software. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fins" title="fins">fins</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer" title=" heat transfer"> heat transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=perforated%20fins" title=" perforated fins"> perforated fins</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20analysis" title=" thermal analysis"> thermal analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20flux" title=" thermal flux"> thermal flux</a> </p> <a href="https://publications.waset.org/abstracts/59711/comparative-analysis-of-internal-combustion-engine-cooling-fins-using-ansys-software" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59711.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">373</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8816</span> Effect of Cooling Approaches on Chemical Compositions, Phases, and Acidolysis of Panzhihua Titania Slag</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bing%20Song">Bing Song</a>, <a href="https://publications.waset.org/abstracts/search?q=Kexi%20Han"> Kexi Han</a>, <a href="https://publications.waset.org/abstracts/search?q=Xuewei%20Lv"> Xuewei Lv</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Titania slag is a high quality raw material containing titanium in the subsequent process of titanium pigment. The effects of cooling approaches of granulating, water cooling, and air cooling on chemical, phases, and acidolysis of Panzhihua titania slag were investigated. Compared to the original slag which was prepared by the conventional processing route, the results show that the titania slag undergoes oxidation of Ti<sup>3+</sup>during different cooling ways. The Ti<sub>2</sub>O<sub>3</sub> content is 17.50% in the original slag, but it is 16.55% and 16.84% in water cooled and air-cooled slag, respectively. Especially, the Ti<sub>2</sub>O<sub>3</sub> content in granulated slag is decreased about 27.6%. The content of Fe<sub>2</sub>O<sub>3</sub> in granulated slag is approximately 2.86% also obviously higher than water (<0.5%) or air-cooled slag (<0.5%). Rutile in cooled titania slag was formed because of the oxidation of Ti<sup>3</sup><sup>+</sup>. The rutile phase without a noticeable change in water cooled and air-cooled slag after the titania slag was cooled, but increased significantly in the granulated slag. The rate of sulfuric acid acidolysis of cooled slag is less than the original slag. The rate of acidolysis is 90.61% and 92.46% to the water-cooled slag and air-cooled slag, respectively. However, the rate of acidolysis of the granulated slag is less than that of industry slag about 20%, only 74.72%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cooling%20approaches" title="cooling approaches">cooling approaches</a>, <a href="https://publications.waset.org/abstracts/search?q=titania%20slag" title=" titania slag"> titania slag</a>, <a href="https://publications.waset.org/abstracts/search?q=granulating" title=" granulating"> granulating</a>, <a href="https://publications.waset.org/abstracts/search?q=sulfuric%20acid%20acidolysis" title=" sulfuric acid acidolysis"> sulfuric acid acidolysis</a> </p> <a href="https://publications.waset.org/abstracts/62188/effect-of-cooling-approaches-on-chemical-compositions-phases-and-acidolysis-of-panzhihua-titania-slag" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62188.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">238</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8815</span> Research on Steam Injection Technology of Extended Range Engine Cylinder for Waste Heat Recovery</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zhiyuan%20Jia">Zhiyuan Jia</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiuxiu%20Sun"> Xiuxiu Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Yong%20Chen"> Yong Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Liu%20Hai"> Liu Hai</a>, <a href="https://publications.waset.org/abstracts/search?q=Shuangqing%20Li"> Shuangqing Li</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The engine cooling water and exhaust gas contain a large amount of available energy. In order to improve energy efficiency, a steam injection technology based on waste heat recovery is proposed. The models of cooling water waste heat utilization, exhaust gas waste heat utilization, and exhaust gas-cooling water waste heat utilization were constructed, and the effects of the three modes on the performance of steam injection were analyzed, and then the feasibility of in-cylinder water injection steam technology based on waste heat recovery was verified. The research results show that when the injection water flow rate is 0.10 kg/s and the temperature is 298 K, at a cooling water temperature of 363 K, the maximum temperature of the injection water heated by the cooling water can reach 314.5 K; at an exhaust gas temperature of 973 K and an exhaust gas flow rate of 0.12 kg/s, the maximum temperature of the injection water heated by the exhaust gas can reach 430 K; Under the condition of cooling water temperature of 363 K, exhaust gas temperature of 973 K and exhaust gas flow rate of 0.12 kg/s, after cooling water and exhaust gas heating, the maximum temperature of the injection water can reach 463 K. When the engine is 1200 rpm, the water injection volume is 30 mg, and the water injection time is 36°CA, the engine power increases by 2% and the fuel consumption is reduced by 2.6%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cooling%20water" title="cooling water">cooling water</a>, <a href="https://publications.waset.org/abstracts/search?q=exhaust%20gas" title=" exhaust gas"> exhaust gas</a>, <a href="https://publications.waset.org/abstracts/search?q=extended%20range%20engine" title=" extended range engine"> extended range engine</a>, <a href="https://publications.waset.org/abstracts/search?q=steam%20injection" title=" steam injection"> steam injection</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20heat%20recovery" title=" waste heat recovery"> waste heat recovery</a> </p> <a href="https://publications.waset.org/abstracts/128975/research-on-steam-injection-technology-of-extended-range-engine-cylinder-for-waste-heat-recovery" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128975.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">185</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8814</span> Cooling-Rate Induced Fiber Birefringence Variation in Regenerated High Birefringent Fiber</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Man-Hong%20Lai">Man-Hong Lai</a>, <a href="https://publications.waset.org/abstracts/search?q=Dinusha%20S.%20Gunawardena"> Dinusha S. Gunawardena</a>, <a href="https://publications.waset.org/abstracts/search?q=Kok-Sing%20Lim"> Kok-Sing Lim</a>, <a href="https://publications.waset.org/abstracts/search?q=Harith%20Ahmad"> Harith Ahmad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we have reported birefringence manipulation in regenerated high-birefringent fiber Bragg grating (RPMG) by using CO2 laser annealing method. The results indicate that the birefringence of RPMG remains unchanged after CO2 laser annealing followed by a slow cooling process, but reduced after the fast cooling process (~5.6×10-5). After a series of annealing procedures with different cooling rates, the obtained results show that slower the cooling rate, higher the birefringence of RPMG. The volume, thermal expansion coefficient (TEC) and glass transition temperature (Tg) change of stress applying part in RPMG during the cooling process are responsible for the birefringence change. Therefore, these findings are important to the RPMG sensor in high and dynamic temperature environment. The measuring accuracy, range and sensitivity of RPMG sensor are greatly affected by its birefringence value. This work also opens up a new application of CO2 laser for fiber annealing and birefringence modification. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=birefringence" title="birefringence">birefringence</a>, <a href="https://publications.waset.org/abstracts/search?q=CO2%20laser%20annealing" title=" CO2 laser annealing"> CO2 laser annealing</a>, <a href="https://publications.waset.org/abstracts/search?q=regenerated%20gratings" title=" regenerated gratings"> regenerated gratings</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20stress" title=" thermal stress"> thermal stress</a> </p> <a href="https://publications.waset.org/abstracts/33331/cooling-rate-induced-fiber-birefringence-variation-in-regenerated-high-birefringent-fiber" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33331.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">459</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8813</span> Experimental Modeling and Simulation of Zero-Surface Temperature of Controlled Water Jet Impingement Cooling System for Hot-Rolled Steel Plates</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thomas%20Okechukwu%20Onah">Thomas Okechukwu Onah</a>, <a href="https://publications.waset.org/abstracts/search?q=Onyekachi%20Marcel%20Egwuagu"> Onyekachi Marcel Egwuagu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Zero-surface temperature, which controlled the cooling profile, was modeled and used to investigate the effect of process parameters on the hot-rolled steel plates. The parameters include impingement gaps of 40mm to 70mm; pipe diameters of 20mm to 45mm feeding jet nozzle with 30 holes of 8mm diameters each; and flow rates within 2.896x10-⁶m³/s and 3.13x10-⁵m³/s. The developed simulation model of the Zero-Surface Temperature, upon validation, showed 99% prediction accuracy with dimensional homogeneity established. The evaluated Zero-Surface temperature of Controlled Water Jet Impingement Steel plates showed a high cooling rate of 36.31 Celsius degree/sec at an optimal cooling nozzle diameter of 20mm, impingement gap of 70mm and a flow rate of 1.77x10-⁵m³/s resulting in Reynold's number 2758.586, in the turbulent regime was obtained. It was also deduced that as the nozzle diameter was increasing, the impingement gap was reducing. This achieved a faster rate of cooling to an optimum temperature of 300oC irrespective of the starting surface cooling temperature. The results additionally showed that with a tested-plate initial temperature of 550oC, a controlled cooling temperature of about 160oC produced a film and nucleated boiling heat extraction that was particularly beneficial at the end of controlled cooling and influenced the microstructural properties of the test plates. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=temperature" title="temperature">temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanistic-model" title=" mechanistic-model"> mechanistic-model</a>, <a href="https://publications.waset.org/abstracts/search?q=plates" title=" plates"> plates</a>, <a href="https://publications.waset.org/abstracts/search?q=impingements" title=" impingements"> impingements</a>, <a href="https://publications.waset.org/abstracts/search?q=dimensionless-numbers" title=" dimensionless-numbers"> dimensionless-numbers</a> </p> <a href="https://publications.waset.org/abstracts/187729/experimental-modeling-and-simulation-of-zero-surface-temperature-of-controlled-water-jet-impingement-cooling-system-for-hot-rolled-steel-plates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/187729.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">46</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8812</span> Investigation on the Cooling Performance of Cooling Channels Fabricated via Selective Laser Melting for Injection Molding</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Changyong%20Liu">Changyong Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Junda%20Tong"> Junda Tong</a>, <a href="https://publications.waset.org/abstracts/search?q=Feng%20Xu"> Feng Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ninggui%20Huang"> Ninggui Huang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the injection molding process, the performance of cooling channels is crucial to the part quality. Through the application of conformal cooling channels fabricated via metal additive manufacturing, part distortion, warpage can be greatly reduced and cycle time can be greatly shortened. However, the properties of additively manufactured conformal cooling channels are quite different from conventional drilling processes such as the poorer dimensional accuracy and larger surface roughness. These features have significant influences on its cooling performance. In this study, test molds with the cooling channel diameters of φ2 mm, φ3 mm and φ4 mm were fabricated via selective laser melting and conventional drilling process respectively. A test system was designed and manufactured to measure the pressure difference between the channel inlet and outlet, the coolant flow rate and the temperature variation during the heating process. It was found that the cooling performance of SLM-fabricated channels was poorer than drilled cooling channels due to the smaller sectional area of cooling channels resulted from the low dimensional accuracy and the unmolten particles adhered to the channel surface. Theoretical models were established to determine the friction factor and heat transfer coefficient of SLM-fabricated cooling channels. These findings may provide guidance to the design of conformal cooling channels. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=conformal%20cooling%20channels" title="conformal cooling channels">conformal cooling channels</a>, <a href="https://publications.waset.org/abstracts/search?q=selective%20laser%20melting" title=" selective laser melting"> selective laser melting</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20performance" title=" cooling performance"> cooling performance</a>, <a href="https://publications.waset.org/abstracts/search?q=injection%20molding" title=" injection molding"> injection molding</a> </p> <a href="https://publications.waset.org/abstracts/102200/investigation-on-the-cooling-performance-of-cooling-channels-fabricated-via-selective-laser-melting-for-injection-molding" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/102200.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">150</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8811</span> Effect of Welding Parameters on Penetration and Bead Width for Variable Plate Thickness in Submerged Arc Welding</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Harish%20K.%20Arya">Harish K. Arya</a>, <a href="https://publications.waset.org/abstracts/search?q=Kulwant%20Singh"> Kulwant Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20K.%20Saxena"> R. K. Saxena</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The heat flow in weldment changes its nature from 2D to 3D with the increase in plate thickness. For welding of thicker plates the heat loss in thickness direction increases the cooling rate of plate. Since the cooling rate changes, the various bead parameters like bead penetration, bead height and bead width also got affected by it. The present study incorporates the effect of variable plate thickness on penetration and bead width. The penetration reduces with increase in plate thickness due to heat loss in thickness direction for same heat input, while bead width increases for thicker plate due to faster cooling. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=submerged%20arc%20welding" title="submerged arc welding">submerged arc welding</a>, <a href="https://publications.waset.org/abstracts/search?q=plate%20thickness" title=" plate thickness"> plate thickness</a>, <a href="https://publications.waset.org/abstracts/search?q=bead%20geometry" title=" bead geometry"> bead geometry</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20rate" title=" cooling rate"> cooling rate</a> </p> <a href="https://publications.waset.org/abstracts/33595/effect-of-welding-parameters-on-penetration-and-bead-width-for-variable-plate-thickness-in-submerged-arc-welding" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33595.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">333</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8810</span> Effect of Welding Parameters on Dilution and Bead Height for Variable Plate Thickness in Submerged Arc Welding</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Harish%20Kumar%20Arya">Harish Kumar Arya</a>, <a href="https://publications.waset.org/abstracts/search?q=Kulwant%20Singh"> Kulwant Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20K%20Saxena"> R. K Saxena</a>, <a href="https://publications.waset.org/abstracts/search?q=Deepti%20Jaiswal"> Deepti Jaiswal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The heat flow in weldment changes its nature from 2D to 3D with the increase in plate thickness. For welding of thicker plates the heat loss in thickness direction increases the cooling rate of plate. Since the cooling rate changes, the various bead parameters like bead penetration, bead height and bead width also got affected by it. The present study incorporates the effect of variable plate thickness on bead geometry and dilution. The penetration reduces with increase in plate thickness due to heat loss in thickness direction, while bead width and reinforcement increases for thicker plate due to faster cooling. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=submerged%20arc%20welding" title="submerged arc welding">submerged arc welding</a>, <a href="https://publications.waset.org/abstracts/search?q=plate%20thickness" title=" plate thickness"> plate thickness</a>, <a href="https://publications.waset.org/abstracts/search?q=bead%20geometry" title=" bead geometry"> bead geometry</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20rate" title=" cooling rate"> cooling rate</a> </p> <a href="https://publications.waset.org/abstracts/34968/effect-of-welding-parameters-on-dilution-and-bead-height-for-variable-plate-thickness-in-submerged-arc-welding" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34968.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">289</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8809</span> Control Strategy of Solar Thermal Cooling System under the Indonesia Climate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Budihardjo%20Sarwo%20Sastrosudiro">Budihardjo Sarwo Sastrosudiro</a>, <a href="https://publications.waset.org/abstracts/search?q=Arnas%20Lubis"> Arnas Lubis</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Idrus%20Alhamid"> Muhammad Idrus Alhamid</a>, <a href="https://publications.waset.org/abstracts/search?q=Nasruddin%20Jusuf"> Nasruddin Jusuf</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Solar thermal cooling system was installed on Mechanical Research Center (MRC) Building that is located in Universitas Indonesia, Depok, Indonesia. It is the first cooling system in Indonesia that utilizes solar energy as energy input combined with natural gas; therefore, the control system must be appropriated with the climates. In order to stabilize the cooling capacity and also to maximize the use of solar energy, the system applies some controllers. Constant flow rate and on/off controller are applied for the hot water, chilled water and cooling water pumps. The hot water circulated by pump when the solar radiation is over than 400W/m<sup>2</sup>, and the chilled water is continually circulated by pump and its temperature is kept constant 7 °C by absorption chiller. The cooling water is also continually circulated until the outlet temperature of cooling tower below than 27 <sup>o</sup>C. Furthermore, the three-way valve is used to control the hot water for generate vapor on absorption chiller. The system performance using that control system is shown in this study results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=absorption%20chiller" title="absorption chiller">absorption chiller</a>, <a href="https://publications.waset.org/abstracts/search?q=control%20system" title=" control system"> control system</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20cooling" title=" solar cooling"> solar cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20energy" title=" solar energy"> solar energy</a> </p> <a href="https://publications.waset.org/abstracts/43453/control-strategy-of-solar-thermal-cooling-system-under-the-indonesia-climate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43453.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">274</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8808</span> Mathematical Modeling of District Cooling Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dana%20Alghool">Dana Alghool</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20%20ElMekkawy"> Tarek ElMekkawy</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Haouari"> Mohamed Haouari</a>, <a href="https://publications.waset.org/abstracts/search?q=Adel%20Elomari"> Adel Elomari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> District cooling systems have captured the attentions of many researchers recently due to the enormous benefits offered by such system in comparison with traditional cooling technologies. It is considered a major component of urban cities due to the significant reduction of energy consumption. This paper aims to find the optimal design and operation of district cooling systems by developing a mixed integer linear programming model to minimize the annual total system cost and satisfy the end-user cooling demand. The proposed model is experimented with different cooling demand scenarios. The results of the very high cooling demand scenario are only presented in this paper. A sensitivity analysis on different parameters of the model was performed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Annual%20Cooling%20Demand" title="Annual Cooling Demand">Annual Cooling Demand</a>, <a href="https://publications.waset.org/abstracts/search?q=Compression%20Chiller" title=" Compression Chiller"> Compression Chiller</a>, <a href="https://publications.waset.org/abstracts/search?q=Mathematical%20Modeling" title=" Mathematical Modeling"> Mathematical Modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=District%20Cooling%20Systems" title=" District Cooling Systems"> District Cooling Systems</a>, <a href="https://publications.waset.org/abstracts/search?q=Optimization" title=" Optimization"> Optimization</a> </p> <a href="https://publications.waset.org/abstracts/118677/mathematical-modeling-of-district-cooling-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/118677.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">202</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8807</span> [Keynote Speaker]: Enhancing the Performance of a Photovoltaic Module Using Different Cooling Methods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Amine%20Hachicha">Ahmed Amine Hachicha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Temperature effect on the performance of a photovoltaic module is one of the main concern that face this renewable energy, especially in the hot arid region, e.g United Arab Emirates. Overheating of the PV modules reduces the open circuit voltage and the efficiency of the modules dramatically. In this work, water cooling is developed to enhance the performance of PV modules. Different scenarios are tested under UAE weather conditions: front, back and double cooling. A spraying system is used for the front cooling whether a direct contact water system is used for the back cooling. The experimental results are compared to a non-cooling module and the performance of the PV module is determined for different situations. A mathematical model is presented to estimate the theoretical performance and validate the experimental results with and without cooling. The experimental results show that the front cooling is more effective than the back cooling and may decrease the temperature of the PV module significantly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=PV%20cooling" title="PV cooling">PV cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20energy" title=" solar energy"> solar energy</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20methods" title=" cooling methods"> cooling methods</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20efficiency" title=" electrical efficiency"> electrical efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature%20effect" title=" temperature effect"> temperature effect</a> </p> <a href="https://publications.waset.org/abstracts/34166/keynote-speaker-enhancing-the-performance-of-a-photovoltaic-module-using-different-cooling-methods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34166.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">497</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8806</span> Numerical Analysis of Internal Cooled Turbine Blade Using Conjugate Heat Transfer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bhavesh%20N.%20Bhatt">Bhavesh N. Bhatt</a>, <a href="https://publications.waset.org/abstracts/search?q=Zozimus%20D.%20Labana"> Zozimus D. Labana </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work is mainly focused on the analysis of heat transfer of blade by using internal cooling method. By using conjugate heat transfer technology we can effectively compute the cooling and heat transfer analysis of blade. Here blade temperature is limited by materials melting temperature. By using CFD code, we will analyze the blade cooling with the help of CHT method. There are two types of CHT methods. In the first method, we apply coupled CHT method in which all three domains modeled at once, and in the second method, we will first model external domain and then, internal domain of cooling channel. Ten circular cooling channels are used as a cooling method with different mass flow rate and temperature value. This numerical simulation is applied on NASA C3X turbine blade, and results are computed. Here results are showing good agreement with experimental results. Temperature and pressure are high at the leading edge of the blade on stagnation point due to its first faces the flow. On pressure side, shock wave is formed which also make a sudden change in HTC and other parameters. After applying internal cooling, we are succeeded in reducing the metal temperature of blade by some extends. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gas%20turbine" title="gas turbine">gas turbine</a>, <a href="https://publications.waset.org/abstracts/search?q=conjugate%20heat%20transfer" title=" conjugate heat transfer"> conjugate heat transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=NASA%20C3X%20Blade" title=" NASA C3X Blade"> NASA C3X Blade</a>, <a href="https://publications.waset.org/abstracts/search?q=circular%20film%20cooling%20channel" title=" circular film cooling channel"> circular film cooling channel</a> </p> <a href="https://publications.waset.org/abstracts/87587/numerical-analysis-of-internal-cooled-turbine-blade-using-conjugate-heat-transfer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87587.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">335</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8805</span> Integrated Passive Cooling Systems for Tropical Residential Buildings: A Review through the Lens of Latent Heat Assessment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=O.%20Eso">O. Eso</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Mohammadi"> M. Mohammadi</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Darkwa"> J. Darkwa</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Calautit"> J. Calautit</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Residential buildings are responsible for 22% of the global end-use energy demand and 17% of global CO₂ emissions. Tropical climates particularly present higher latent heat gains, leading to more cooling loads. However, the cooling processes are all based on conventional mechanical air conditioning systems which are energy and carbon intensive technologies. Passive cooling systems have in the past been considered as alternative technologies for minimizing energy consumption in buildings. Nevertheless, replacing mechanical cooling systems with passive ones will require a careful assessment of the passive cooling system heat transfer to determine if suitable to outperform their conventional counterparts. This is because internal heat gains, indoor-outdoor heat transfer, and heat transfer through envelope affects the performance of passive cooling systems. While many studies have investigated sensible heat transfer in passive cooling systems, not many studies have focused on their latent heat transfer capabilities. Furthermore, combining heat prevention, heat modulation and heat dissipation to passively cool indoor spaces in the tropical climates is critical to achieve thermal comfort. Since passive cooling systems use only one of these three approaches at a time, integrating more than one passive cooling system for effective indoor latent heat removal while still saving energy is studied. This study is a systematic review of recently published peer review journals on integrated passive cooling systems for tropical residential buildings. The missing links in the experimental and numerical studies with regards to latent heat reduction interventions are presented. Energy simulation studies of integrated passive cooling systems in tropical residential buildings are also discussed. The review has shown that comfortable indoor environment is attainable when two or more passive cooling systems are integrated in tropical residential buildings. Improvement occurs in the heat transfer rate and cooling performance of the passive cooling systems when thermal energy storage systems like phase change materials are included. Integrating passive cooling systems in tropical residential buildings can reduce energy consumption by 6-87% while achieving up to 17.55% reduction in indoor heat flux. The review has highlighted a lack of numerical studies regarding passive cooling system performance in tropical savannah climates. In addition, detailed studies are required to establish suitable latent heat transfer rate in passive cooling ventilation devices under this climate category. This should be considered in subsequent studies. The conclusions and outcomes of this study will help researchers understand the overall energy performance of integrated passive cooling systems in tropical climates and help them identify and design suitable climate specific options for residential buildings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=energy%20savings" title="energy savings">energy savings</a>, <a href="https://publications.waset.org/abstracts/search?q=latent%20heat" title=" latent heat"> latent heat</a>, <a href="https://publications.waset.org/abstracts/search?q=passive%20cooling%20systems" title=" passive cooling systems"> passive cooling systems</a>, <a href="https://publications.waset.org/abstracts/search?q=residential%20buildings" title=" residential buildings"> residential buildings</a>, <a href="https://publications.waset.org/abstracts/search?q=tropical%20residential%20buildings" title=" tropical residential buildings"> tropical residential buildings</a> </p> <a href="https://publications.waset.org/abstracts/137580/integrated-passive-cooling-systems-for-tropical-residential-buildings-a-review-through-the-lens-of-latent-heat-assessment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/137580.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">149</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8804</span> Diabatic Flow of Sub-Cooled R-600a Inside a Capillary Tube: Concentric Configuration</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ravi%20Kumar">Ravi Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Santhosh%20Kumar%20Dubba"> Santhosh Kumar Dubba </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents an experimental study of a diabatic flow of R-600a through a concentric configured capillary tube suction line heat exchanger. The details of experimental facility for testing the diabatic capillary tube with different inlet sub-cooling degree and pressure are discussed. The effect of coil diameter, capillary length, capillary tube diameter, sub-cooling degree and inlet pressure on mass flow rate are presented. The degree of sub-cooling at the inlet of capillary tube is varied from 3-20°C. The refrigerant mass flow rate is scattered up with rising of pressure. A semi-empirical correlation to predict the mass flow rate of R-600a flowing through a diabatic capillary tube is proposed for sub-cooled inlet conditions. The proposed correlation predicts measured data with an error band of ±20 percent. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=diabatic" title="diabatic">diabatic</a>, <a href="https://publications.waset.org/abstracts/search?q=capillary%20tube" title=" capillary tube"> capillary tube</a>, <a href="https://publications.waset.org/abstracts/search?q=concentric" title=" concentric"> concentric</a>, <a href="https://publications.waset.org/abstracts/search?q=R-600a" title=" R-600a"> R-600a</a> </p> <a href="https://publications.waset.org/abstracts/81743/diabatic-flow-of-sub-cooled-r-600a-inside-a-capillary-tube-concentric-configuration" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/81743.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">204</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8803</span> Parametric Study on Water-Cooling Plates to Improve Cooling Performance on 18650 Li-Ion Battery</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Raksit%20Nanthatanti">Raksit Nanthatanti</a>, <a href="https://publications.waset.org/abstracts/search?q=Jarruwat%20Charoensuk"> Jarruwat Charoensuk</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Hirai"> S. Hirai</a>, <a href="https://publications.waset.org/abstracts/search?q=Manop%20Masomtop"> Manop Masomtop</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the effect of channel geometry and operating circumstances on a liquid cooling plate for Lithium-ion Battery modules has been investigated Inlet temperature, water velocity, and channel count were the main factors. According to the passage, enhancing the number of cooling channels[2,3,4,6channelperbases] will affect water flow distribution caused by varying the velocity inlet inside the cooling block[0.5,1.0,1.5,2.0 m/sec] and intake temperatures[25,30,35,40oC], The findings indicate that the battery’s temperature drops as the number of channels increases. The maximum battery's operating temperature [45 oC] rises, but ∆t is needed to be less than 5 oC [v≤1m/sec]. Maximum temperature and local temperature difference of the battery change significantly with the change of the velocity inlet in the cooling channel and its thermal conductivity. The results of the simulation will help to increase cooling efficiency on the cooling system for Li-ion Battery based on a Mini channel in a liquid-cooling configuration <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cooling%20efficiency" title="cooling efficiency">cooling efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=channel%20count" title=" channel count"> channel count</a>, <a href="https://publications.waset.org/abstracts/search?q=lithium-ion%20battery" title=" lithium-ion battery"> lithium-ion battery</a>, <a href="https://publications.waset.org/abstracts/search?q=operating" title=" operating"> operating</a> </p> <a href="https://publications.waset.org/abstracts/165565/parametric-study-on-water-cooling-plates-to-improve-cooling-performance-on-18650-li-ion-battery" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165565.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">102</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8802</span> Thermal Performance and Environmental Assessment of Evaporative Cooling Systems: Case of Mina Valley, Saudi Arabia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Alharbi">A. Alharbi</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Boukhanouf"> R. Boukhanouf</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Habeebullah"> T. Habeebullah</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Ibrahim"> H. Ibrahim </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a detailed description of evaporative cooling systems used for space cooling in Mina Valley, Saudi Arabia. The thermal performance and environmental impact of the evaporative coolers were evaluated. It was found that the evaporative cooling systems used for space cooling in pilgrims’ accommodations and in the train stations could reduce energy consumption by as much as 75% and cut carbon dioxide emission by 78% compared to traditional vapour compression systems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=evaporative%20cooling" title="evaporative cooling">evaporative cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=vapor%20compression" title=" vapor compression"> vapor compression</a>, <a href="https://publications.waset.org/abstracts/search?q=electricity%20consumption" title=" electricity consumption"> electricity consumption</a>, <a href="https://publications.waset.org/abstracts/search?q=CO2%20emission" title=" CO2 emission"> CO2 emission</a> </p> <a href="https://publications.waset.org/abstracts/9649/thermal-performance-and-environmental-assessment-of-evaporative-cooling-systems-case-of-mina-valley-saudi-arabia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9649.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">434</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8801</span> Sympathetic Cooling of Antiprotons with Molecular Anions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sebastian%20Gerber">Sebastian Gerber</a>, <a href="https://publications.waset.org/abstracts/search?q=Julian%20Fesel"> Julian Fesel</a>, <a href="https://publications.waset.org/abstracts/search?q=Christian%20Zimmer"> Christian Zimmer</a>, <a href="https://publications.waset.org/abstracts/search?q=Pauline%20Yzombard"> Pauline Yzombard</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Comparat"> Daniel Comparat</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Doser"> Michael Doser</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Molecular anions play a central role in a wide range of fields: from atmospheric and interstellar science, anionic superhalogens to the chemistry of highly correlated systems. However, up to now the synthesis of negative ions in a controlled manner at ultracold temperatures, relevant for the processes in which they are involved, is currently limited to a few Kelvin by supersonic beam expansion followed by resistive, buffer gas or electron cooling in cryogenic environments. We present a realistic scheme for laser cooling of C2- molecules to sub-Kelvin temperatures, which has so far only been achieved for a few neutral diatomic molecules. The generation of a pulsed source of C2- and subsequent laser cooling techniques of C2- molecules confined in a Penning trap are reviewed. Further, laser cooling of one anionic species would allow to sympathetically cool other molecular anions, electrons and antiprotons that are confined in the same trapping potential. In this presentation the status of the experiment and the feasibility of C2- sympathetic Doppler laser cooling, photo-detachment cooling and AC-Stark Sisyphus cooling will be reviewed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antiprotons" title="antiprotons">antiprotons</a>, <a href="https://publications.waset.org/abstracts/search?q=anions" title=" anions"> anions</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20of%20ions%20and%20molecules" title=" cooling of ions and molecules"> cooling of ions and molecules</a>, <a href="https://publications.waset.org/abstracts/search?q=Doppler%20cooling" title=" Doppler cooling"> Doppler cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=photo-detachment" title=" photo-detachment"> photo-detachment</a>, <a href="https://publications.waset.org/abstracts/search?q=penning%20trap" title=" penning trap"> penning trap</a>, <a href="https://publications.waset.org/abstracts/search?q=Sisyphus%20cooling" title=" Sisyphus cooling"> Sisyphus cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=sympathetic%20cooling" title=" sympathetic cooling"> sympathetic cooling</a> </p> <a href="https://publications.waset.org/abstracts/60744/sympathetic-cooling-of-antiprotons-with-molecular-anions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60744.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">381</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8800</span> Research and Development of Intelligent Cooling Channels Design System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Q.%20Niu">Q. Niu</a>, <a href="https://publications.waset.org/abstracts/search?q=X.%20H.%20Zhou"> X. H. Zhou</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Liu"> W. Liu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The cooling channels of injection mould play a crucial role in determining the productivity of moulding process and the product quality. It’s not a simple task to design high quality cooling channels. In this paper, an intelligent cooling channels design system including automatic layout of cooling channels, interference checking and assembly of accessories is studied. Automatic layout of cooling channels using genetic algorithm is analyzed. Through integrating experience criteria of designing cooling channels, considering the factors such as the mould temperature and interference checking, the automatic layout of cooling channels is implemented. The method of checking interference based on distance constraint algorithm and the function of automatic and continuous assembly of accessories are developed and integrated into the system. Case studies demonstrate the feasibility and practicality of the intelligent design system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=injection%20mould" title="injection mould">injection mould</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20channel" title=" cooling channel"> cooling channel</a>, <a href="https://publications.waset.org/abstracts/search?q=intelligent%20design" title=" intelligent design"> intelligent design</a>, <a href="https://publications.waset.org/abstracts/search?q=automatic%20layout" title=" automatic layout"> automatic layout</a>, <a href="https://publications.waset.org/abstracts/search?q=interference%20checking" title=" interference checking"> interference checking</a> </p> <a href="https://publications.waset.org/abstracts/11809/research-and-development-of-intelligent-cooling-channels-design-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11809.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">440</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8799</span> The Effect of Window Position and Ceiling Height on Cooling Load in Architectural Studio</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seyedehzahra%20Mirrahimi">Seyedehzahra Mirrahimi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper investigates the effect of variations in window and ceiling heights on cooling inside an architectural training studio with a full-width window. For architectural training, students use the studio more often than they use ordinary classrooms. Therefore, studio dimensions and size, and the window position, directly influence the cooling load. Energy for cooling is one of the most expensive costs in the studio because of the high activity levels of students during the warm season. The methodology of analysis involves measuring energy changes in the Energy Plus <EP> software in Kish Island. It was proved that the cooling energy in an architecture studio can be increased by changing window levels and ceiling heights to add a range of cooling energy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cooling%20energy" title="cooling energy">cooling energy</a>, <a href="https://publications.waset.org/abstracts/search?q=Energy%20Plus" title=" Energy Plus"> Energy Plus</a>, <a href="https://publications.waset.org/abstracts/search?q=studio%20classroom" title=" studio classroom"> studio classroom</a>, <a href="https://publications.waset.org/abstracts/search?q=window%20position" title=" window position"> window position</a> </p> <a href="https://publications.waset.org/abstracts/116834/the-effect-of-window-position-and-ceiling-height-on-cooling-load-in-architectural-studio" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/116834.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">290</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8798</span> Preliminary Study of Desiccant Cooling System under Algerian Climates</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Hatraf">N. Hatraf</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Moummi"> N. Moummi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The interest in air conditioning using renewable energies is increasing. The thermal energy produced from the solar energy can be converted to useful cooling and heating through the thermochemical or thermophysical processes by using thermally activated energy conversion systems. The ambient air contains so much water that very high dehumidification rates are required. For a continuous dehumidification of the process air, the water adsorbed on the desiccant material has to be removed, which is done by allowing hot air to flow through the desiccant material (regeneration). A solid desiccant cooling system transfers moisture from the inlet air to the silica gel by using two processes: Absorption process and the regeneration process. The main aim of this paper is to study how the dehumidification rate, the generation temperature and many other factors influence the efficiency of a solid desiccant system by using TRNSYS software. The results show that the desiccant system could be used to decrease the humidity rate of the entering air. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dehumidification" title="dehumidification">dehumidification</a>, <a href="https://publications.waset.org/abstracts/search?q=efficiency" title=" efficiency"> efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=humidity" title=" humidity"> humidity</a>, <a href="https://publications.waset.org/abstracts/search?q=Trnsys" title=" Trnsys"> Trnsys</a> </p> <a href="https://publications.waset.org/abstracts/32515/preliminary-study-of-desiccant-cooling-system-under-algerian-climates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32515.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">440</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8797</span> Thermoelectric Cooler As A Heat Transfer Device For Thermal Conductivity Test</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdul%20Murad%20Zainal%20Abidin">Abdul Murad Zainal Abidin</a>, <a href="https://publications.waset.org/abstracts/search?q=Azahar%20Mohd"> Azahar Mohd</a>, <a href="https://publications.waset.org/abstracts/search?q=Nor%20Idayu%20Arifin"> Nor Idayu Arifin</a>, <a href="https://publications.waset.org/abstracts/search?q=Siti%20Nor%20Azila%20Khalid"> Siti Nor Azila Khalid</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohd%20Julzaha%20Zahari%20Mohamad%20Yusof"> Mohd Julzaha Zahari Mohamad Yusof</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A thermoelectric cooler (TEC) is an electronic component that uses ‘peltier’ effect to create a temperature difference by transferring heat between two electrical junctions of two different types of materials. TEC can also be used for heating by reversing the electric current flow and even power generation. A heat flow meter (HFM) is an equipment for measuring thermal conductivity of building materials. During the test, water is used as heat transfer medium to cool the HFM. The existing re-circulating cooler in the market is very costly, and the alternative is to use piped tap water to extract heat from HFM. However, the tap water temperature is insufficiently low to enable heat transfer to take place. The operating temperature for isothermal plates in the HFM is 40°C with the range of ±0.02°C. When the temperature exceeds the operating range, the HFM stops working, and the test cannot be conducted. The aim of the research is to develop a low-cost but energy-efficient TEC prototype that enables heat transfer without compromising the function of the HFM. The objectives of the research are a) to identify potential of TEC as a cooling device by evaluating its cooling rate and b) to determine the amount of water savings using TEC compared to normal tap water. Four (4) peltier sets were used, with two (2) sets used as pre-cooler. The cooling water is re-circulated from the reservoir into HFM using a water pump. The thermal conductivity readings, the water flow rate, and the power consumption were measured while the HFM was operating. The measured data has shown decrease in average cooling temperature difference (ΔTave) of 2.42°C and average cooling rate of 0.031°C/min. The water savings accrued from using the TEC is projected to be 8,332.8 litres/year with the application of water re-circulation. The results suggest the prototype has achieved required objectives. Further research will include comparing the cooling rate of TEC prototype against conventional tap water and to optimize its design and performance in terms of size and portability. The possible application of the prototype could also be expanded to portable storage for medicine and beverages. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=energy%20efficiency" title="energy efficiency">energy efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=thermoelectric%20cooling" title=" thermoelectric cooling"> thermoelectric cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=pre-cooling%20device" title=" pre-cooling device"> pre-cooling device</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20flow%20meter" title=" heat flow meter"> heat flow meter</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20technology" title=" sustainable technology"> sustainable technology</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20conductivity" title=" thermal conductivity"> thermal conductivity</a> </p> <a href="https://publications.waset.org/abstracts/144569/thermoelectric-cooler-as-a-heat-transfer-device-for-thermal-conductivity-test" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144569.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">155</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8796</span> Experimental Investigation on Sustainable Machining of Hastelloy C-276 Utilizing Different Cooling Strategies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Balkar%20Singh">Balkar Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Gurpreet%20Singh"> Gurpreet Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Vivek%20Aggarwal"> Vivek Aggarwal</a>, <a href="https://publications.waset.org/abstracts/search?q=Sehijpal%20Singh"> Sehijpal Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present research focused to improve the machinability of Hastelloy C-276 at different machining speeds such as 31, 55, and 79 m/min. The use of CO2 gas and Minimum quantity lubrication (MQL) was applied as coolant and lubrication purposes to enhance the machinability of the superalloy. The output in the form of surface roughness (S.R) and heat generation was monitored under dry, MQL, and MQL-CO2-cooled conditions. The Design of the Experiment was prepared using MINITAB software utilizing Taguchi L-27 orthogonal arrays followed by ANOVA analysis for finding the impact of input variables on output responses. At different speeds and lubrication conditions, different behavioral patterns for Surface Roughness and the temperature was observed. ANOVA analysis depicted that the cooling environment impacted the S.R. majorly (50%) followed by cutting speed (29.84%), feed rate (5.09%), and least through depth of cut (4.95%). On the other side, the temperature was greatly influenced by cutting speed (69.12%), Cryo-MQL (8.09%), feed rate (7.59%), and depth of cut (6.20%). Experimental results revealed that Cryo-MQL cooling enhanced the Surface roughness by 12% compared to MQL condition. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hastelloy%20C-276" title="Hastelloy C-276">Hastelloy C-276</a>, <a href="https://publications.waset.org/abstracts/search?q=minimum%20quantity%20lubrication" title=" minimum quantity lubrication"> minimum quantity lubrication</a>, <a href="https://publications.waset.org/abstracts/search?q=olive%20oil" title=" olive oil"> olive oil</a>, <a href="https://publications.waset.org/abstracts/search?q=cryogenic%20Cooling%20%28CO2%29" title=" cryogenic Cooling (CO2)"> cryogenic Cooling (CO2)</a> </p> <a href="https://publications.waset.org/abstracts/164049/experimental-investigation-on-sustainable-machining-of-hastelloy-c-276-utilizing-different-cooling-strategies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164049.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">142</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8795</span> Jet Impingement Heat Transfer on a Rib-Roughened Flat Plate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20H.%20Alenezi">A. H. Alenezi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cooling by impingement jet is known to have a significant high local and average heat transfer coefficient which make it widely used in industrial cooling systems. The heat transfer characteristics of an impinging jet on rib-roughened flat plate has been investigated numerically. This paper was set out to investigate the effect of rib height on the heat transfer rate. Since the flow needs to have enough spacing after passing the rib to allow reattachment especially for high Reynolds numbers, this study focuses on finding the optimum rib height which would be the best to maximize the heat transfer rate downstream the plate. This investigation employs a round nozzle with hydraulic diameter (Dh) of 13.5 mm, Jet-to-target distance of (H/D) of 4, rib location=1.5D and and finally jet angels of 45˚ and 90˚ under the influence of Re =10,000. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=jet%20impingement" title="jet impingement">jet impingement</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD" title=" CFD"> CFD</a>, <a href="https://publications.waset.org/abstracts/search?q=turbulence%20model" title=" turbulence model"> turbulence model</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer" title=" heat transfer"> heat transfer</a> </p> <a href="https://publications.waset.org/abstracts/57530/jet-impingement-heat-transfer-on-a-rib-roughened-flat-plate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57530.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">351</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8794</span> Assessment of Power Formation in Gas Turbine Power Plants Using Different Inlet Air Cooling Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nikhil%20V.%20Nayak">Nikhil V. Nayak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the influence of air cooling intake on the gas turbine performance is presented. A comparison among different cooling systems, i.e., evaporative and cooling coil, is performed. A computer simulation model for the employed systems is developed in order to evaluate the performance of the studied gas turbine unit, at Marka Power Station, Amman, Bangalore. The performance characteristics are examined for a set of actual operational parameters including ambient temperature, relative humidity, turbine inlet temperature, pressure ratio, etc. The obtained results showed that the evaporative cooling system is capable of boosting the power and enhancing the efficiency of the studied gas turbine unit in a way much cheaper than cooling coil system due to its high power consumption required to run the vapor-compression refrigeration unit. Nevertheless, it provides full control on the temperature inlet conditions regardless of the relative humidity ratio. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=power%20augmentation" title="power augmentation">power augmentation</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature%20control" title=" temperature control"> temperature control</a>, <a href="https://publications.waset.org/abstracts/search?q=evaporative%20cooling" title=" evaporative cooling"> evaporative cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20coil" title=" cooling coil"> cooling coil</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20turbine" title=" gas turbine "> gas turbine </a> </p> <a href="https://publications.waset.org/abstracts/14670/assessment-of-power-formation-in-gas-turbine-power-plants-using-different-inlet-air-cooling-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14670.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">385</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=5">5</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=6">6</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=7">7</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=8">8</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=9">9</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=10">10</a></li> <li class="page-item disabled"><span class="page-link">...</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=294">294</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=295">295</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cooling%20rate&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 16th foundational anniversary</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Account <li><a href="https://waset.org/profile">My Account</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Explore <li><a href="https://waset.org/disciplines">Disciplines</a></li> <li><a href="https://waset.org/conferences">Conferences</a></li> <li><a href="https://waset.org/conference-programs">Conference Program</a></li> <li><a href="https://waset.org/committees">Committees</a></li> <li><a href="https://publications.waset.org">Publications</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Research <li><a href="https://publications.waset.org/abstracts">Abstracts</a></li> <li><a href="https://publications.waset.org">Periodicals</a></li> <li><a href="https://publications.waset.org/archive">Archive</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Open Science <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Science-Philosophy.pdf">Open Science Philosophy</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Science-Award.pdf">Open Science Award</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Society-Open-Science-and-Open-Innovation.pdf">Open Innovation</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Postdoctoral-Fellowship-Award.pdf">Postdoctoral Fellowship Award</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Scholarly-Research-Review.pdf">Scholarly Research Review</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Support <li><a href="https://waset.org/page/support">Support</a></li> <li><a href="https://waset.org/profile/messages/create">Contact Us</a></li> <li><a href="https://waset.org/profile/messages/create">Report Abuse</a></li> </ul> </div> </div> </div> </div> </div> <div class="container text-center"> <hr style="margin-top:0;margin-bottom:.3rem;"> <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank" class="text-muted small">Creative Commons Attribution 4.0 International License</a> <div id="copy" class="mt-2">© 2024 World Academy of Science, Engineering and Technology</div> </div> </footer> <a href="javascript:" id="return-to-top"><i class="fas fa-arrow-up"></i></a> <div class="modal" id="modal-template"> <div class="modal-dialog"> <div class="modal-content"> <div class="row m-0 mt-1"> <div class="col-md-12"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> </div> </div> <div class="modal-body"></div> </div> </div> </div> <script src="https://cdn.waset.org/static/plugins/jquery-3.3.1.min.js"></script> <script src="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/js/bootstrap.bundle.min.js"></script> <script src="https://cdn.waset.org/static/js/site.js?v=150220211556"></script> <script> jQuery(document).ready(function() { /*jQuery.get("https://publications.waset.org/xhr/user-menu", function (response) { jQuery('#mainNavMenu').append(response); });*/ jQuery.get({ url: "https://publications.waset.org/xhr/user-menu", cache: false }).then(function(response){ jQuery('#mainNavMenu').append(response); }); }); </script> </body> </html>