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thermodynamic model</title> <meta name="description" content="Search results for: thermodynamic model"> <meta name="keywords" content="thermodynamic model"> <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 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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="thermodynamic model"> <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> 17026</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: thermodynamic model</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17026</span> The Relationship Study between Topological Indices in Contrast with Thermodynamic Properties of Amino Acids</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Esmat%20Mohammadinasab">Esmat Mohammadinasab</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostafa%20Sadeghi"> Mostafa Sadeghi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study are computed some thermodynamic properties such as entropy and specific heat capacity, enthalpy, entropy and gibbs free energy in 10 type different Aminoacids using Gaussian software with DFT method and 6-311G basis set. Then some topological indices such as Wiener, shultz are calculated for mentioned molecules. Finaly is showed relationship between thermodynamic peoperties and above topological indices and with different curves is represented that there is a good correlation between some of the quantum properties with topological indices of them. The instructive example is directed to the design of the structure-property model for predicting the thermodynamic properties of the amino acids which are discussed here. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amino%20acids" title="amino acids">amino acids</a>, <a href="https://publications.waset.org/abstracts/search?q=DFT%20Method" title=" DFT Method"> DFT Method</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20descriptor" title=" molecular descriptor"> molecular descriptor</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20properties" title=" thermodynamic properties "> thermodynamic properties </a> </p> <a href="https://publications.waset.org/abstracts/23718/the-relationship-study-between-topological-indices-in-contrast-with-thermodynamic-properties-of-amino-acids" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23718.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">432</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">17025</span> Structural and Thermodynamic Properties of MnNi</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Benkhettoua">N. Benkhettoua</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Barkata"> Y. Barkata </a> </p> <p class="card-text"><strong>Abstract:</strong></p> We present first-principles studies of structural and thermodynamic properties of MnNi According to the calculated total energies, by using an all-electron full-potential linear muffin–tin orbital method (FP-LMTO) within LDA and the quasi-harmonic Debye model implemented in the Gibbs program is used for the temperature effect on structural and calorific properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=magnetic%20materials" title="magnetic materials">magnetic materials</a>, <a href="https://publications.waset.org/abstracts/search?q=structural%20properties" title=" structural properties"> structural properties</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20properties" title=" thermodynamic properties"> thermodynamic properties</a>, <a href="https://publications.waset.org/abstracts/search?q=metallurgical%20and%20materials%20engineering" title=" metallurgical and materials engineering"> metallurgical and materials engineering</a> </p> <a href="https://publications.waset.org/abstracts/14206/structural-and-thermodynamic-properties-of-mnni" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14206.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">556</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">17024</span> Thermodynamic Properties of Binary Gold-Rare Earth Compounds (Au-RE)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20Krarchaa">H. Krarchaa</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Ferroudj"> A. Ferroudj</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work presents the results of thermodynamic properties of intermetallic rare earth-gold compounds at different stoichiometric structures. It mentions the existence of the AuRE AuRE2, Au2RE, Au51RE14, Au6RE, Au3RE and Au4RE phases in the majority of Au-RE phase diagrams. It's observed that equiatomic composition is a common compound for all gold rare earth alloys and it has the highest melting temperature. Enthalpies of the formation of studied compounds are calculated based on a new reformulation of Miedema’s model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rare%20earth%20element" title="rare earth element">rare earth element</a>, <a href="https://publications.waset.org/abstracts/search?q=enthalpy%20of%20formation" title=" enthalpy of formation"> enthalpy of formation</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20properties" title=" thermodynamic properties"> thermodynamic properties</a>, <a href="https://publications.waset.org/abstracts/search?q=macroscopic%20model" title=" macroscopic model"> macroscopic model</a> </p> <a href="https://publications.waset.org/abstracts/191105/thermodynamic-properties-of-binary-gold-rare-earth-compounds-au-re" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/191105.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">20</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">17023</span> Thermodynamic Analysis of Ammonia-Water Based Regenerative Rankine Cycle with Partial Evaporation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kyoung%20Hoon%20Kim">Kyoung Hoon Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A thermodynamic analysis of a partial evaporating Rankine cycle with regeneration using zeotropic ammonia-water mixture as a working fluid is presented in this paper. The thermodynamic laws were applied to evaluate the system performance. Based on the thermodynamic model, the effects of the vapor quality and the ammonia mass fraction on the system performance were extensively investigated. The results showed that thermal efficiency has a peak value with respect to the vapor quality as well as the ammonia mass fraction. The partial evaporating ammonia based Rankine cycle has a potential to improve recovery of low-grade finite heat source. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ammonia-water" title="ammonia-water">ammonia-water</a>, <a href="https://publications.waset.org/abstracts/search?q=Rankine%20cycle" title=" Rankine cycle"> Rankine cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=partial%20evaporating" title=" partial evaporating"> partial evaporating</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20performance" title=" thermodynamic performance"> thermodynamic performance</a> </p> <a href="https://publications.waset.org/abstracts/78954/thermodynamic-analysis-of-ammonia-water-based-regenerative-rankine-cycle-with-partial-evaporation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78954.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">301</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">17022</span> Prediction of Thermodynamic Properties of N-Heptane in the Critical Region</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sabrina%20Ladjama">Sabrina Ladjama</a>, <a href="https://publications.waset.org/abstracts/search?q=Aicha%20Rizi"> Aicha Rizi</a>, <a href="https://publications.waset.org/abstracts/search?q=Azzedine%20Abbaci"> Azzedine Abbaci</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we use the crossover model to formulate a comprehensive fundamental equation of state for the thermodynamic properties for several n-alkanes in the critical region that extends to the classical region. This equation of state is constructed on the basis of comparison of selected measurements of pressure-density-temperature data, isochoric and isobaric heat capacity. The model can be applied in a wide range of temperatures and densities around the critical point for n-heptane. It is found that the developed model represents most of the reliable experimental data accurately. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=crossover%20model" title="crossover model">crossover model</a>, <a href="https://publications.waset.org/abstracts/search?q=critical%20region" title=" critical region"> critical region</a>, <a href="https://publications.waset.org/abstracts/search?q=fundamental%20equation" title=" fundamental equation"> fundamental equation</a>, <a href="https://publications.waset.org/abstracts/search?q=n-heptane" title=" n-heptane"> n-heptane</a> </p> <a href="https://publications.waset.org/abstracts/38446/prediction-of-thermodynamic-properties-of-n-heptane-in-the-critical-region" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38446.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">474</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">17021</span> Studies on the Applicability of Artificial Neural Network (ANN) in Prediction of Thermodynamic Behavior of Sodium Chloride Aqueous System Containing a Non-Electrolytes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dariush%20Jafari">Dariush Jafari</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Mostafa%20Nowee"> S. Mostafa Nowee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study a ternary system containing sodium chloride as solute, water as primary solvent and ethanol as the antisolvent was considered to investigate the application of artificial neural network (ANN) in prediction of sodium solubility in the mixture of water as the solvent and ethanol as the antisolvent. The system was previously studied using by Extended UNIQUAC model by the authors of this study. The comparison between the results of the two models shows an excellent agreement between them (R2=0.99), and also approves the capability of ANN to predict the thermodynamic behavior of ternary electrolyte systems which are difficult to model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20modeling" title="thermodynamic modeling">thermodynamic modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=ANN" title=" ANN"> ANN</a>, <a href="https://publications.waset.org/abstracts/search?q=solubility" title=" solubility"> solubility</a>, <a href="https://publications.waset.org/abstracts/search?q=ternary%20electrolyte%20system" title=" ternary electrolyte system"> ternary electrolyte system</a> </p> <a href="https://publications.waset.org/abstracts/18933/studies-on-the-applicability-of-artificial-neural-network-ann-in-prediction-of-thermodynamic-behavior-of-sodium-chloride-aqueous-system-containing-a-non-electrolytes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18933.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> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17020</span> First Principal Calculation of Structural, Elastic and Thermodynamic Properties of Yttrium-Copper Intermetallic Compound</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ammar%20Benamrani">Ammar Benamrani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work investigates the equation of state parameters, elastic constants, and several other physical properties of (B2-type) Yttrium-Copper (YCu) rare earth intermetallic compound using the projected augmented wave (PAW) pseudopotentials method as implemented in the Quantum Espresso code. Using both the local density approximation (LDA) and the generalized gradient approximation (GGA), the finding of this research on the lattice parameter of YCu intermetallic compound agree very well with the experimental ones. The obtained results of the elastic constants and the Debye temperature are also in general in good agreement compared to the theoretical ones reported previously in literature. Furthermore, several thermodynamic properties of YCu intermetallic compound have been studied using quasi-harmonic approximations (QHA). The calculated data on the thermodynamic properties shows that the free energy and both isothermal and adiabatic bulk moduli decrease gradually with increasing of the temperature, while all other thermodynamic quantities increase with the temperature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yttrium-Copper%20intermetallic%20compound" title="Yttrium-Copper intermetallic compound">Yttrium-Copper intermetallic compound</a>, <a href="https://publications.waset.org/abstracts/search?q=thermo_pw%20package" title=" thermo_pw package"> thermo_pw package</a>, <a href="https://publications.waset.org/abstracts/search?q=elastic%20constants" title=" elastic constants"> elastic constants</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20properties" title=" thermodynamic properties"> thermodynamic properties</a> </p> <a href="https://publications.waset.org/abstracts/132557/first-principal-calculation-of-structural-elastic-and-thermodynamic-properties-of-yttrium-copper-intermetallic-compound" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/132557.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">17019</span> Analysis of CO₂ Two-Phase Ejector with Taguchi and ANOVA Optimization and Refrigerant Selection with Enviro Economic Concerns by TOPSIS Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Karima%20Megdouli">Karima Megdouli</a>, <a href="https://publications.waset.org/abstracts/search?q=Bourhan%20tachtouch"> Bourhan tachtouch</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ejector refrigeration cycles offer an alternative to conventional systems for producing cold from low-temperature heat. In this article, a thermodynamic model is presented. This model has the advantage of simplifying the calculation algorithm and describes the complex double-throttling mechanism that occurs in the ejector. The model assumption and calculation algorithm are presented first. The impact of each efficiency is evaluated. Validation is performed on several data sets. The ejector model is then used to simulate a RES (refrigeration ejector system), to validate its robustness and suitability for use in predicting thermodynamic cycle performance. A Taguchi and ANOVA optimization is carried out on a RES. TOPSIS analysis was applied to decide the optimum refrigerants with cost, safety, environmental and enviro economic concerns along with thermophysical properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ejector" title="ejector">ejector</a>, <a href="https://publications.waset.org/abstracts/search?q=velocity%20distribution" title=" velocity distribution"> velocity distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=shock%20circle" title=" shock circle"> shock circle</a>, <a href="https://publications.waset.org/abstracts/search?q=Taguchi%20and%20ANOVA%20optimization" title=" Taguchi and ANOVA optimization"> Taguchi and ANOVA optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=TOPSIS%20analysis" title=" TOPSIS analysis"> TOPSIS analysis</a> </p> <a href="https://publications.waset.org/abstracts/170979/analysis-of-co2-two-phase-ejector-with-taguchi-and-anova-optimization-and-refrigerant-selection-with-enviro-economic-concerns-by-topsis-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/170979.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">89</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">17018</span> A Study on Thermodynamic Prototype for Vernacular Dwellings in Perspective of Bioclimatic Architecture</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zhenzhen%20Zhang">Zhenzhen Zhang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As major human activity places, buildings consume a large amount of energy, and residential buildings are very important part of it. An extensive research work had been conducted to research how to achieve low energy goals, vernacular dwellings and contemporary technologies are two prime parameters among them. On one hand, some researchers concentrated on vernacular dwellings which were climate-response design and could offer a better living condition without mechanic application. On the other hand, a series concepts appeared based on modern technologies, surplus energy house, bioclimatic architecture, etc. especially thermodynamic architecture which integrates the micro-climate, human activity, thermal comfort, and energy efficiency into design. How to blend the two parameters is the key research topic now, which would act as the key to how to integrate the ancient design wise and contemporary new technologies. By several cases study, this paper will represent the evolution of thermodynamic architecture and then try to develop one methodology about how to produce a typical thermodynamic prototype for one area by blending the ancient building wise and contemporary concepts to achieve both low energy consumption and surplus energy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=vernacular%20dwelling" title="vernacular dwelling">vernacular dwelling</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20architecture" title=" thermodynamic architecture"> thermodynamic architecture</a>, <a href="https://publications.waset.org/abstracts/search?q=bioclimatic%20architecture" title=" bioclimatic architecture"> bioclimatic architecture</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20prototype" title=" thermodynamic prototype"> thermodynamic prototype</a>, <a href="https://publications.waset.org/abstracts/search?q=surplus%20energy" title=" surplus energy"> surplus energy</a> </p> <a href="https://publications.waset.org/abstracts/75026/a-study-on-thermodynamic-prototype-for-vernacular-dwellings-in-perspective-of-bioclimatic-architecture" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75026.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">17017</span> Teaching and Learning Dialectical Relationship between Thermodynamic Equilibrium and Reaction Rate Constant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Anwar">Mohammad Anwar</a>, <a href="https://publications.waset.org/abstracts/search?q=Shah%20Waliullah"> Shah Waliullah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The development of science and technology in the present era has an urgent demand for the training of thinking of undergraduates. This requirement actively promotes research and teaching of basic theories, beneficial to the career development of students. This study clarified the dialectical relation between the thermodynamic equilibrium constant and reaction rate constant through the contrast thinking method. Findings reveal that both the isobaric Van't Hoff equation and the Arrhenius equation had four similar forms, and the change in the trend of both constants showed a similar law. By the derivation of the formation rate constant of the product (KY) and the consumption rate constant of the reactant (KA), the ratio of both constants at the end state indicated the nature of the equilibrium state in agreement with that of the thermodynamic equilibrium constant (K^θ (T)). This study has thus presented that the thermodynamic equilibrium constant contained the characteristics of microscopic dynamics based on the analysis of the reaction mechanism, and both constants are organically connected and unified. The reaction enthalpy and activation energy are closely related to each other with the same connotation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20equilibrium%20constant" title="thermodynamic equilibrium constant">thermodynamic equilibrium constant</a>, <a href="https://publications.waset.org/abstracts/search?q=reaction%20rate%20constant" title=" reaction rate constant"> reaction rate constant</a>, <a href="https://publications.waset.org/abstracts/search?q=PBL%20teaching" title=" PBL teaching"> PBL teaching</a>, <a href="https://publications.waset.org/abstracts/search?q=dialectical%20relation" title=" dialectical relation"> dialectical relation</a>, <a href="https://publications.waset.org/abstracts/search?q=innovative%20thinking" title=" innovative thinking"> innovative thinking</a> </p> <a href="https://publications.waset.org/abstracts/161693/teaching-and-learning-dialectical-relationship-between-thermodynamic-equilibrium-and-reaction-rate-constant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161693.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">109</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">17016</span> Parametric Analysis of Syn-gas Fueled SOFC with Internal Reforming</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sanjay%20Tushar%20Choudhary">Sanjay Tushar Choudhary</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper focuses on the thermodynamic analysis of Solid Oxide Fuel Cell (SOFC). In the present work the SOFC has been modeled to work with internal reforming of fuel which takes place at high temperature and direct energy conversion from chemical energy to electrical energy takes place. The fuel-cell effluent is a high-temperature steam which can be used for co-generation purposes. Syn-gas has been used here as fuel which is essentially produced by steam reforming of methane in the internal reformer of the SOFC. A thermodynamic model of SOFC has been developed for planar cell configuration to evaluate various losses in the energy conversion process within the fuel cell. Cycle parameters like fuel utilization ratio and the air-recirculation ratio have been varied to evaluate the thermodynamic performance of the fuel cell. Output performance parameters like terminal voltage, cell-efficiency and power output have been evaluated for various values of current densities. It has been observed that a combination of a lower value of air-circulation ratio and higher values of fuel utilization efficiency gives a better overall thermodynamic performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=current%20density" title="current density">current density</a>, <a href="https://publications.waset.org/abstracts/search?q=SOFC" title=" SOFC"> SOFC</a>, <a href="https://publications.waset.org/abstracts/search?q=suel%20utilization%20factor" title=" suel utilization factor"> suel utilization factor</a>, <a href="https://publications.waset.org/abstracts/search?q=recirculation%20ratio" title=" recirculation ratio"> recirculation ratio</a> </p> <a href="https://publications.waset.org/abstracts/16028/parametric-analysis-of-syn-gas-fueled-sofc-with-internal-reforming" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16028.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">508</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">17015</span> Design Parameters Optimization of a Gas Turbine with Exhaust Gas Recirculation: An Energy and Exergy Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Joe%20Hachem">Joe Hachem</a>, <a href="https://publications.waset.org/abstracts/search?q=Marianne%20Cuif-Sjostrand"> Marianne Cuif-Sjostrand</a>, <a href="https://publications.waset.org/abstracts/search?q=Thierry%20Schuhler"> Thierry Schuhler</a>, <a href="https://publications.waset.org/abstracts/search?q=Dominique%20Orhon"> Dominique Orhon</a>, <a href="https://publications.waset.org/abstracts/search?q=Assaad%20Zoughaib"> Assaad Zoughaib</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The exhaust gas recirculation, EGR, implementation on gas turbines is increasingly gaining the attention of many researchers. This emerging technology presents many advantages, such as lowering the NOx emissions and facilitating post-combustion carbon capture as the carbon dioxide concentration in the cycle increases. As interesting as this technology may seem, the gas turbine, or its thermodynamic equivalent, the Brayton cycle, shows an intrinsic efficiency decrease with increasing EGR rate. In this paper, a thermodynamic model is presented to show the cycle efficiency decrease with EGR, alternative values of design parameters of both the pressure ratio (PR) and the turbine inlet temperature (TIT) are then proposed to optimize the cycle efficiency with different EGR rates. Results show that depending on the given EGR rate, both the design PR & TIT should be increased to compensate for the deficit in efficiency. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gas%20turbines" title="gas turbines">gas turbines</a>, <a href="https://publications.waset.org/abstracts/search?q=exhaust%20gas%20recirculation" title=" exhaust gas recirculation"> exhaust gas recirculation</a>, <a href="https://publications.waset.org/abstracts/search?q=design%20parameters%20optimization" title=" design parameters optimization"> design parameters optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20approach" title=" thermodynamic approach"> thermodynamic approach</a> </p> <a href="https://publications.waset.org/abstracts/135673/design-parameters-optimization-of-a-gas-turbine-with-exhaust-gas-recirculation-an-energy-and-exergy-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135673.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">145</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">17014</span> Prediction of the Thermodynamic Properties of Hydrocarbons Using Gaussian Process Regression</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Alhazmi">N. Alhazmi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Knowing the thermodynamics properties of hydrocarbons is vital when it comes to analyzing the related chemical reaction outcomes and understanding the reaction process, especially in terms of petrochemical industrial applications, combustions, and catalytic reactions. However, measuring the thermodynamics properties experimentally is time-consuming and costly. In this paper, Gaussian process regression (GPR) has been used to directly predict the main thermodynamic properties - standard enthalpy of formation, standard entropy, and heat capacity -for more than 360 cyclic and non-cyclic alkanes, alkenes, and alkynes. A simple workflow has been proposed that can be applied to directly predict the main properties of any hydrocarbon by knowing its descriptors and chemical structure and can be generalized to predict the main properties of any material. The model was evaluated by calculating the statistical error R², which was more than 0.9794 for all the predicted properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thermodynamic" title="thermodynamic">thermodynamic</a>, <a href="https://publications.waset.org/abstracts/search?q=Gaussian%20process%20regression" title=" Gaussian process regression"> Gaussian process regression</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrocarbons" title=" hydrocarbons"> hydrocarbons</a>, <a href="https://publications.waset.org/abstracts/search?q=regression" title=" regression"> regression</a>, <a href="https://publications.waset.org/abstracts/search?q=supervised%20learning" title=" supervised learning"> supervised learning</a>, <a href="https://publications.waset.org/abstracts/search?q=entropy" title=" entropy"> entropy</a>, <a href="https://publications.waset.org/abstracts/search?q=enthalpy" title=" enthalpy"> enthalpy</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20capacity" title=" heat capacity"> heat capacity</a> </p> <a href="https://publications.waset.org/abstracts/145010/prediction-of-the-thermodynamic-properties-of-hydrocarbons-using-gaussian-process-regression" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/145010.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">222</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">17013</span> Thermodynamic Performance Tests for 3D Printed Steel Slag Powder Concrete Walls</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Li%20Guoyou">Li Guoyou</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhang%20Tao"> Zhang Tao</a>, <a href="https://publications.waset.org/abstracts/search?q=Ji%20Wenzhan"> Ji Wenzhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Huo%20Liang"> Huo Liang</a>, <a href="https://publications.waset.org/abstracts/search?q=Lin%20Xiqiang"> Lin Xiqiang</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhang%20Nan"> Zhang Nan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The three dimensional (3D) printing technology has undergone rapid development in the last few years and it is possible to print engineering structures. 3D printing buildings use wastes from constructions, industries and mine tailings as “ink”, and mix it with property improved materials, such as cement, fiber etc. This paper presents a study of the Thermodynamic performance of 3D printed walls using cement and steel slag powder. Analyses the thermal simulation regarding 3D printed walls and solid brick wall by the way of the hot-box methods and the infrared technology, and the results were contrasted with theoretical calculation. The results show that the excellent thermodynamic performance of 3D printed concrete wall made it suitable as the partial materials for self-thermal insulation walls in residential buildings. The thermodynamic performance of 3D printed concrete walls depended on the density of materials, distribution of holes, and the filling materials. Decreasing the density of materials, increasing the number of holes or replacing the filling materials with foamed concrete could improve its thermodynamic performance significantly. The average of heat transfer coefficient and thermal inertia index of 3D printed steel slag powder concrete wall all better than the traditional solid brick wall with a thickness of 240mm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=concrete" title="concrete">concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=3D%20printed%20walls" title=" 3D printed walls"> 3D printed walls</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20performance" title=" thermodynamic performance"> thermodynamic performance</a>, <a href="https://publications.waset.org/abstracts/search?q=steel%20slag%20powder" title=" steel slag powder"> steel slag powder</a> </p> <a href="https://publications.waset.org/abstracts/92165/thermodynamic-performance-tests-for-3d-printed-steel-slag-powder-concrete-walls" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92165.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">183</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">17012</span> Performance Study of Cascade Refrigeration System Using Alternative Refrigerants</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gulshan%20Sachdeva">Gulshan Sachdeva</a>, <a href="https://publications.waset.org/abstracts/search?q=Vaibhav%20Jain"> Vaibhav Jain</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20S.%20Kachhwaha"> S. S. Kachhwaha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cascade refrigeration systems employ series of single stage vapor compression units which are thermally coupled with evaporator/condenser cascades. Different refrigerants are used in each of the circuit depending on the optimum characteristics shown by the refrigerant for a particular application. In the present research study, a steady state thermodynamic model is developed which simulates the working of an actual cascade system. The model provides COP and all other system parameters like total compressor work, temperature, pressure, enthalpy and entropy at different state points. The working fluid in Low Temperature Circuit (LTC) is CO2 (R744) while ammonia (R717), propane (R290), propylene (R1270), R404A and R12 are the refrigerants in High Temperature Circuit (HTC). The performance curves of ammonia, propane, propylene, and R404A are compared with R12 to find its nearest substitute. Results show that ammonia is the best substitute of R12. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cascade%20system" title="cascade system">cascade system</a>, <a href="https://publications.waset.org/abstracts/search?q=refrigerants" title=" refrigerants"> refrigerants</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20model" title=" thermodynamic model"> thermodynamic model</a>, <a href="https://publications.waset.org/abstracts/search?q=production%20engineering" title=" production engineering"> production engineering</a> </p> <a href="https://publications.waset.org/abstracts/4923/performance-study-of-cascade-refrigeration-system-using-alternative-refrigerants" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4923.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">361</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">17011</span> Performance Evaluation of a Small Microturbine Cogeneration Functional Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jeni%20A.%20Popescu">Jeni A. Popescu</a>, <a href="https://publications.waset.org/abstracts/search?q=Sorin%20G.%20Tomescu"> Sorin G. Tomescu</a>, <a href="https://publications.waset.org/abstracts/search?q=Valeriu%20A.%20Vilag"> Valeriu A. Vilag</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper focuses on the potential methods of increasing the performance of a microturbine by combining additional elements available for utilization in a cogeneration plant. The activity is carried out within the framework of a project aiming to develop, manufacture and test a microturbine functional model with high potential in energetic industry utilization. The main goal of the analysis is to determine the parameters of the fluid flow passing through each section of the turbine, based on limited data available in literature for the focus output power range or provided by experimental studies, starting from a reference cycle, and considering different cycle options, including simple, intercooled and recuperated options, in order to optimize a small cogeneration plant operation. The studied configurations operate under the same initial thermodynamic conditions and are based on a series of assumptions, in terms of individual performance of the components, pressure/velocity losses, compression ratios, and efficiencies. The thermodynamic analysis evaluates the expected performance of the microturbine cycle, while providing a series of input data and limitations to be included in the development of the experimental plan. To simplify the calculations and to allow a clear estimation of the effect of heat transfer between fluids, the working fluid for all the thermodynamic evolutions is, initially, air, the combustion being modelled by simple heat addition to the system. The theoretical results, along with preliminary experimental results are presented, aiming for a correlation in terms of microturbine performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cogeneration" title="cogeneration">cogeneration</a>, <a href="https://publications.waset.org/abstracts/search?q=microturbine" title=" microturbine"> microturbine</a>, <a href="https://publications.waset.org/abstracts/search?q=performance" title=" performance"> performance</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20analysis" title=" thermodynamic analysis"> thermodynamic analysis</a> </p> <a href="https://publications.waset.org/abstracts/74904/performance-evaluation-of-a-small-microturbine-cogeneration-functional-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74904.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">169</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">17010</span> Molecular Dynamics Simulations of the Structural, Elastic, and Thermodynamic Properties of Cubic AlBi</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Zemouli">M. Zemouli</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Amara"> K. Amara</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Elkeurti"> M. Elkeurti</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Benallou"> Y. Benallou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We present a theoretical study of the structural, elastic and thermodynamic properties of the zinc-blende AlBi for a wide temperature range. The simulation calculation is performed in the framework of the molecular dynamics method using the three-body Tersoff potential which reproduces provide, with reasonable accuracy, the lattice constants and elastic constants. Our results for the lattice constant, the bulk modulus and cohesive energy are in good agreement with other theoretical available works. Other thermodynamic properties such as the specific heat and the lattice thermal expansion can also be predicted. In addition, this method allows us to check its ability to predict the phase transition of this compound. In particular, the transition pressure to the rock-salt phase is calculated and the results are compared with other available works. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aluminium%20compounds" title="aluminium compounds">aluminium compounds</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20dynamics%20simulations" title=" molecular dynamics simulations"> molecular dynamics simulations</a>, <a href="https://publications.waset.org/abstracts/search?q=interatomic%20potential" title=" interatomic potential"> interatomic potential</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20properties" title=" thermodynamic properties"> thermodynamic properties</a>, <a href="https://publications.waset.org/abstracts/search?q=structural%20phase%20transition" title=" structural phase transition"> structural phase transition</a> </p> <a href="https://publications.waset.org/abstracts/16626/molecular-dynamics-simulations-of-the-structural-elastic-and-thermodynamic-properties-of-cubic-albi" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16626.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">305</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">17009</span> Thermodynamic Analysis of Cascade Refrigeration System Using R12-R13, R290-R23 and R404A-23</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20D.%20Parekh">A. D. Parekh</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20R.%20Tailor"> P. R. Tailor </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Montreal protocol and Kyoto protocol underlined the need of substitution of CFC’s and HCFC’s due to their adverse impact on atmospheric ozone layer which protects earth from U.V rays. The CFCs have been entirely ruled out since 1995 and a long-term basis HCFCs must be replaced by 2020. All this events motivated HFC refrigerants which are harmless to ozone layer. In this paper thermodynamic analysis of cascade refrigeration system has been done using three different refrigerant pairs R13-R12, R290-R23, and R404A-R23. Effect of various operating parameters i.e evaporator temperature, condenser temperature, temperature difference in cascade condenser and low temperature cycle condenser temperature on performance parameters viz. COP, exergetic efficiency and refrigerant mass flow ratio have been studied. Thermodynamic analysis shows that out of three refrigerant pairs R12-R13, R290-R23 and R404A-R23 the COP of R290-R23 refrigerant pair is highest. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20analysis" title="thermodynamic analysis">thermodynamic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=cascade%20refrigeration%20system" title=" cascade refrigeration system"> cascade refrigeration system</a>, <a href="https://publications.waset.org/abstracts/search?q=COP" title=" COP"> COP</a>, <a href="https://publications.waset.org/abstracts/search?q=exergetic%20efficiency" title=" exergetic efficiency"> exergetic efficiency</a> </p> <a href="https://publications.waset.org/abstracts/12727/thermodynamic-analysis-of-cascade-refrigeration-system-using-r12-r13-r290-r23-and-r404a-23" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12727.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">296</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">17008</span> Excel-VBA as Modelling Platform for Thermodynamic Optimisation of an R290/R600a Cascade Refrigeration System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20M.%20El-Awad">M. M. El-Awad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The availability of computers and educational software nowadays helps engineering students acquire better understanding of engineering principles and their applications. With these facilities, students can perform sensitivity and optimisation analyses which were not possible in the past by using slide-rules and hand calculators. Standard textbooks in engineering thermodynamics also use software such as Engineering Equation Solver (EES) and Interactive Thermodynamics (IT) for solving calculation-intensive and design problems. Unfortunately, engineering students in most developing countries do not have access to such applications which are protected by intellectual-property rights. This paper shows how Microsoft ExcelTM and VBA (Visual Basic for Applications), which are normally distributed with personal computers and laptops, can be used as an alternative modelling platform for thermodynamic analyses and optimisation. The paper describes the VBA user-defined-functions developed for determining the refrigerants properties with Excel. For illustration, the combination is used to model and optimise the intermediate temperature for a propane/iso-butane cascade refrigeration system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20optimisation" title="thermodynamic optimisation">thermodynamic optimisation</a>, <a href="https://publications.waset.org/abstracts/search?q=engineering%20education" title=" engineering education"> engineering education</a>, <a href="https://publications.waset.org/abstracts/search?q=excel" title=" excel"> excel</a>, <a href="https://publications.waset.org/abstracts/search?q=VBA" title=" VBA"> VBA</a>, <a href="https://publications.waset.org/abstracts/search?q=cascade%20refrigeration%20system" title=" cascade refrigeration system"> cascade refrigeration system</a> </p> <a href="https://publications.waset.org/abstracts/4046/excel-vba-as-modelling-platform-for-thermodynamic-optimisation-of-an-r290r600a-cascade-refrigeration-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4046.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">17007</span> Thermodynamic Modeling of Three Pressure Level Reheat HRSG, Parametric Analysis and Optimization Using PSO</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahmoud%20Nadir">Mahmoud Nadir</a>, <a href="https://publications.waset.org/abstracts/search?q=Adel%20Ghenaiet"> Adel Ghenaiet</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main purpose of this study is the thermodynamic modeling, the parametric analysis, and the optimization of three pressure level reheat HRSG (Heat Recovery Steam Generator) using PSO method (Particle Swarm Optimization). In this paper, a parametric analysis followed by a thermodynamic optimization is presented. The chosen objective function is the specific work of the steam cycle that may be, in the case of combined cycle (CC), a good criterion of thermodynamic performance analysis, contrary to the conventional steam turbines in which the thermal efficiency could be also an important criterion. The technologic constraints such as maximal steam cycle temperature, minimal steam fraction at steam turbine outlet, maximal steam pressure, minimal stack temperature, minimal pinch point, and maximal superheater effectiveness are also considered. The parametric analyses permitted to understand the effect of design parameters and the constraints on steam cycle specific work variation. PSO algorithm was used successfully in HRSG optimization, knowing that the achieved results are in accordance with those of the previous studies in which genetic algorithms were used. Moreover, this method is easy to implement comparing with the other methods. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=combined%20cycle" title="combined cycle">combined cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=HRSG%20thermodynamic%20modeling" title=" HRSG thermodynamic modeling"> HRSG thermodynamic modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=PSO" title=" PSO"> PSO</a>, <a href="https://publications.waset.org/abstracts/search?q=steam%20cycle%20specific%20work" title=" steam cycle specific work"> steam cycle specific work</a> </p> <a href="https://publications.waset.org/abstracts/38513/thermodynamic-modeling-of-three-pressure-level-reheat-hrsg-parametric-analysis-and-optimization-using-pso" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38513.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">382</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">17006</span> Thermodynamic Analysis of GT Cycle with Naphtha or Natural Gas as the Fuel: A Thermodynamic Comparison</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Arpit">S. Arpit</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20K.%20Das"> P. K. Das</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20K.%20Dash"> S. K. Dash</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a comparative study is done between two fuels, naphtha and natural gas (NG), for a gas turbine (GT) plant of 32.5 MW with the same thermodynamic configuration. From the energy analysis, it is confirmed that the turbine inlet temperature (TIT) of the gas turbine in the case of natural gas is higher as compared to naphtha, and hence the isentropic efficiency of the turbine is better. The result from the exergy analysis also confirms that due to high turbine inlet temperature in the case of natural gas, exergy destruction in combustion chamber is less. But comparing two fuels for overall analysis, naphtha has higher energy and exergetic efficiency as compared to natural gas. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=exergy%20analysis" title="exergy analysis">exergy analysis</a>, <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=naphtha" title=" naphtha"> naphtha</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20gas" title=" natural gas"> natural gas</a> </p> <a href="https://publications.waset.org/abstracts/101550/thermodynamic-analysis-of-gt-cycle-with-naphtha-or-natural-gas-as-the-fuel-a-thermodynamic-comparison" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/101550.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">208</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">17005</span> Folding Pathway and Thermodynamic Stability of Monomeric GroEL</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarita%20Puri">Sarita Puri</a>, <a href="https://publications.waset.org/abstracts/search?q=Tapan%20K.%20Chaudhuri"> Tapan K. Chaudhuri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Chaperonin GroEL is a tetradecameric Escherichia coli protein having identical subunits of 57 kDa. The elucidation of thermodynamic parameters related to stability for the native GroEL is not feasible as it undergoes irreversible unfolding because of its large size (800kDa) and multimeric nature. Nevertheless, it is important to determine the thermodynamic stability parameters for the highly stable GroEL protein as it helps in folding and holding of many substrate proteins during many cellular stresses. Properly folded monomers work as building-block for the formation of native tetradecameric GroEL. Spontaneous refolding behavior of monomeric GroEL makes it suitable for protein-denaturant interactions and thermodynamic stability based studies. The urea mediated unfolding is a three state process which means there is the formation of one intermediate state along with native and unfolded states. The heat mediated denaturation is a two-state process. The unfolding process is reversible as observed by the spontaneous refolding of denatured protein in both urea and head mediated refolding processes. Analysis of folding/unfolding data provides a measure of various thermodynamic stability parameters for the monomeric GroEL. The proposed mechanism of unfolding of monomeric GroEL is a three state process which involves formation of one stable intermediate having folded apical domain and unfolded equatorial, intermediate domains. Research in progress is to demonstrate the importance of specific residues in stability and oligomerization of GroEL protein. Several mutant versions of GroEL are under investigation to resolve the above mentioned issue. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=equilibrium%20unfolding" title="equilibrium unfolding">equilibrium unfolding</a>, <a href="https://publications.waset.org/abstracts/search?q=monomeric%20GroEl" title=" monomeric GroEl"> monomeric GroEl</a>, <a href="https://publications.waset.org/abstracts/search?q=spontaneous%20refolding" title=" spontaneous refolding"> spontaneous refolding</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20stability" title=" thermodynamic stability"> thermodynamic stability</a> </p> <a href="https://publications.waset.org/abstracts/67151/folding-pathway-and-thermodynamic-stability-of-monomeric-groel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67151.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">282</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">17004</span> Catalytic Thermodynamics of Nanocluster Adsorbates from Informational Statistical Mechanics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Forrest%20Kaatz">Forrest Kaatz</a>, <a href="https://publications.waset.org/abstracts/search?q=Adhemar%20Bultheel"> Adhemar Bultheel</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We use an informational statistical mechanics approach to study the catalytic thermodynamics of platinum and palladium cuboctahedral nanoclusters. Nanoclusters and their adatoms are viewed as chemical graphs with a nearest neighbor adjacency matrix. We use the Morse potential to determine bond energies between cluster atoms in a coordination type calculation. We use adsorbate energies calculated from density functional theory (DFT) to study the adatom effects on the thermodynamic quantities, which are derived from a Hamiltonian. Oxygen radical and molecular adsorbates are studied on platinum clusters and hydrogen on palladium clusters. We calculate the entropy, free energy, and total energy as the coverage of adsorbates increases from bridge and hollow sites on the surface. Thermodynamic behavior versus adatom coverage is related to the structural distribution of adatoms on the nanocluster surfaces. The thermodynamic functions are characterized using a simple adsorption model, with linear trends as the coverage of adatoms increases. The data exhibits size effects for the measured thermodynamic properties with cluster diameters between 2 and 5 nm. Entropy and enthalpy calculations of Pt-O2 compare well with previous theoretical data for Pt(111)-O2, and our Pd-H results show similar trends as experimental measurements for Pd-H2 nanoclusters. Our methods are general and may be applied to wide variety of nanocluster adsorbate systems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=catalytic%20thermodynamics" title="catalytic thermodynamics">catalytic thermodynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=palladium%20nanocluster%20absorbates" title=" palladium nanocluster absorbates"> palladium nanocluster absorbates</a>, <a href="https://publications.waset.org/abstracts/search?q=platinum%20nanocluster%20absorbates" title=" platinum nanocluster absorbates"> platinum nanocluster absorbates</a>, <a href="https://publications.waset.org/abstracts/search?q=statistical%20mechanics" title=" statistical mechanics"> statistical mechanics</a> </p> <a href="https://publications.waset.org/abstracts/81052/catalytic-thermodynamics-of-nanocluster-adsorbates-from-informational-statistical-mechanics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/81052.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">166</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">17003</span> Electronic, Optical, and Thermodynamic Properties of a Quantum Spin Liquid Candidate NaRuO₂: Ab-initio Investigation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Bouhmouche">A. Bouhmouche</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Rhrissi"> I. Rhrissi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Jabar"> A. Jabar</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Moubah"> R. Moubah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Quantum spin liquids (QSLs), known for their competing interactions that prevent conventional ordering, exhibit emergent phenomena and exotic properties resulting from quantum correlations. Despite these recent advancements in QSLs, a significant portion of the optical and thermodynamic properties in the Kagome lattice remains unknown. In addition, the thermodynamic phenomenology of NaRuO₂ bears a resemblance to that of highly frustrated magnets. Here, we employed ab-initio calculations to explore the electronic, optical and thermodynamic properties of NaRuO₂, a new QSL candidate. NaRuO₂ was identified as a semiconductor with a small bandgap energy of 0.69 eV. Our results reveal huge anisotropic optical properties, in which a distinct refractive index within the ab-plane indicating an impressive birefringent character of the NaRuO₂ system and a significant enhancement of the optical absorption coefficient and optical conductivity in the in-plane with respect to the c-axis. The investigation also examines the electronic anisotropy of the gap energy; by applying strain, the gap energy displays significant variations in the ab-plane compared to the out-of-plane direction. Conversely, calculations of the thermodynamic properties reveal a low thermal conductivity (2.5-0.5 W.m-¹. K-¹) and specific heat, which suggests the existence of strong interactions among the NaRuO₂ quantum spins. The linear specific heat behavior observed in NaRuO₂ suggests the fractionalization of electrons and the presence of a spinons Fermi surface. These findings hold promising potential for future quantum applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=quantum%20spin%20liquids" title="quantum spin liquids">quantum spin liquids</a>, <a href="https://publications.waset.org/abstracts/search?q=anisotropy" title=" anisotropy"> anisotropy</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid-DFT" title=" hybrid-DFT"> hybrid-DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=applied%20strain" title=" applied strain"> applied strain</a>, <a href="https://publications.waset.org/abstracts/search?q=optoelectronic%20and%20thermodynamic%20properties" title=" optoelectronic and thermodynamic properties"> optoelectronic and thermodynamic properties</a> </p> <a href="https://publications.waset.org/abstracts/193006/electronic-optical-and-thermodynamic-properties-of-a-quantum-spin-liquid-candidate-naruo2-ab-initio-investigation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/193006.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">17</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">17002</span> Thermodynamic Analyses of Information Dissipation along the Passive Dendritic Trees and Active Action Potential</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bahar%20Hazal%20Yal%C3%A7%C4%B1nkaya">Bahar Hazal Yalçınkaya</a>, <a href="https://publications.waset.org/abstracts/search?q=Bayram%20Y%C4%B1lmaz"> Bayram Yılmaz</a>, <a href="https://publications.waset.org/abstracts/search?q=Mustafa%20%C3%96zilgen"> Mustafa Özilgen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Brain information transmission in the neuronal network occurs in the form of electrical signals. Neural work transmits information between the neurons or neurons and target cells by moving charged particles in a voltage field; a fraction of the energy utilized in this process is dissipated via entropy generation. Exergy loss and entropy generation models demonstrate the inefficiencies of the communication along the dendritic trees. In this study, neurons of 4 different animals were analyzed with one dimensional cable model with N=6 identical dendritic trees and M=3 order of symmetrical branching. Each branch symmetrically bifurcates in accordance with the 3/2 power law in an infinitely long cylinder with the usual core conductor assumptions, where membrane potential is conserved in the core conductor at all branching points. In the model, exergy loss and entropy generation rates are calculated for each branch of equivalent cylinders of electrotonic length (L) ranging from 0.1 to 1.5 for four different dendritic branches, input branch (BI), and sister branch (BS) and two cousin branches (BC-1 & BC-2). Thermodynamic analysis with the data coming from two different cat motoneuron studies show that in both experiments nearly the same amount of exergy is lost while generating nearly the same amount of entropy. Guinea pig vagal motoneuron loses twofold more exergy compared to the cat models and the squid exergy loss and entropy generation were nearly tenfold compared to the guinea pig vagal motoneuron model. Thermodynamic analysis show that the dissipated energy in the dendritic tress is directly proportional with the electrotonic length, exergy loss and entropy generation. Entropy generation and exergy loss show variability not only between the vertebrate and invertebrates but also within the same class. Concurrently, single action potential Na<sup>+</sup> ion load, metabolic energy utilization and its thermodynamic aspect contributed for squid giant axon and mammalian motoneuron model. Energy demand is supplied to the neurons in the form of Adenosine triphosphate (ATP). Exergy destruction and entropy generation upon ATP hydrolysis are calculated. ATP utilization, exergy destruction and entropy generation showed differences in each model depending on the variations in the ion transport along the channels. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ATP%20utilization" title="ATP utilization">ATP utilization</a>, <a href="https://publications.waset.org/abstracts/search?q=entropy%20generation" title=" entropy generation"> entropy generation</a>, <a href="https://publications.waset.org/abstracts/search?q=exergy%20loss" title=" exergy loss"> exergy loss</a>, <a href="https://publications.waset.org/abstracts/search?q=neuronal%20information%20transmittance" title=" neuronal information transmittance"> neuronal information transmittance</a> </p> <a href="https://publications.waset.org/abstracts/62888/thermodynamic-analyses-of-information-dissipation-along-the-passive-dendritic-trees-and-active-action-potential" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62888.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">393</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">17001</span> Thermodynamic Study of Homo-Pairs in Molten Cd-Me, (Me=Ga,in) Binary Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yisau%20Adelaja%20Odusote">Yisau Adelaja Odusote</a>, <a href="https://publications.waset.org/abstracts/search?q=Olakanmi%20Felix%20Akinto"> Olakanmi Felix Akinto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The associative tendency between like atoms in molten Cd-Ga and Cd-In alloy systems has been studied by using the Quasi-Chemical Approximation Model (QCAM). The concentration dependence of the microscopic functions (the concentration-concentration fluctuations in the long-wavelength limits, Scc(0), the chemical short-range order (CSRO) parameter α1 as well as the chemical diffusion) and the mixing properties as the free energy of mixing, GM, enthalpy of mixing and entropy of mixing of the two molten alloys have been determined. Thermodynamic properties of both systems deviate positively from Raoult's law, while the systems are characterized by positive interaction energy. The role of atomic size ratio on the alloying properties was discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=homo-pairs" title="homo-pairs">homo-pairs</a>, <a href="https://publications.waset.org/abstracts/search?q=interchange%20energy" title=" interchange energy"> interchange energy</a>, <a href="https://publications.waset.org/abstracts/search?q=enthalpy" title=" enthalpy"> enthalpy</a>, <a href="https://publications.waset.org/abstracts/search?q=entropy" title=" entropy"> entropy</a>, <a href="https://publications.waset.org/abstracts/search?q=Cd-Ga" title=" Cd-Ga"> Cd-Ga</a>, <a href="https://publications.waset.org/abstracts/search?q=Cd-In" title=" Cd-In"> Cd-In</a> </p> <a href="https://publications.waset.org/abstracts/27883/thermodynamic-study-of-homo-pairs-in-molten-cd-me-megain-binary-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27883.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">437</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">17000</span> Kinetic, Equilibrium and Thermodynamic Studies of the Adsorption of Crystal Violet Dye Using Groundnut Hulls</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Olumuyiwa%20Ayoola%20Kokapi">Olumuyiwa Ayoola Kokapi</a>, <a href="https://publications.waset.org/abstracts/search?q=Olugbenga%20Solomon%20Bello"> Olugbenga Solomon Bello</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Dyes are organic compounds with complex aromatic molecular structure that resulted in fast colour on a substance. Dye effluent found in wastewater generated from the dyeing industries is one of the greatest contributors to water pollution. Groundnut hull (GH) is an agricultural material that constitutes waste in the environment. Environmental contamination by hazardous organic chemicals is an urgent problem, which is partially solved through adsorption technologies. The choice of groundnut hull was promised on the understanding that some materials of agricultural origin have shown potentials to act as Adsorbate for hazardous organic chemicals. The aim of this research is to evaluate the potential of groundnut hull to adsorb Crystal violet dye through kinetic, isotherm and thermodynamic studies. The prepared groundnut hulls was characterized using Brunauer, Emmett and Teller (BET), Fourier transform infrared (FTIR) and scanning electron microscopy (SEM). Operational parameters such as contact time, initial dye concentration, pH, and effect of temperature were studied. Equilibrium time for the adsorption process was attained in 80 minutes. Adsorption isotherms used to test the adsorption data were Langmuir and Freundlich isotherms model. Thermodynamic parameters such as ∆G°, ∆H°, and ∆S° of the adsorption processes were determined. The results showed that the uptake of dye by groundnut hulls occurred at a faster rate, corresponding to an increase in adsorption capacity at equilibrium time of 80 min from 0.78 to 4.45 mg/g and 0.77 to 4.45mg/g with an increase in the initial dye concentration from 10 to 50 mg/L for pH 3.0 and 8.0 respectively. High regression values obtained for pseudo-second-order kinetic model, sum of square error (SSE%) values along with strong agreement between experimental and calculated values of qe proved that pseudo second-order kinetic model fitted more than pseudo first-order kinetic model. The result of Langmuir and Freundlich model showed that the adsorption data fit the Langmuir model more than the Freundlich model. Thermodynamic study demonstrated the feasibility, spontaneous and endothermic nature of the adsorption process due to negative values of free energy change (∆G) at all temperatures and positive value of enthalpy change (∆H) respectively. The positive values of ∆S showed that there was increased disorderliness and randomness at the solid/solution interface of crystal violet dye and groundnut hulls. The present investigation showed that, groundnut hulls (GH) is a good low-cost alternative adsorbent for the removal of Crystal Violet (CV) dye from aqueous solution. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adsorption" title="adsorption">adsorption</a>, <a href="https://publications.waset.org/abstracts/search?q=crystal%20violet%20dye" title=" crystal violet dye"> crystal violet dye</a>, <a href="https://publications.waset.org/abstracts/search?q=groundnut%20halls" title=" groundnut halls"> groundnut halls</a>, <a href="https://publications.waset.org/abstracts/search?q=kinetics" title=" kinetics"> kinetics</a> </p> <a href="https://publications.waset.org/abstracts/42487/kinetic-equilibrium-and-thermodynamic-studies-of-the-adsorption-of-crystal-violet-dye-using-groundnut-hulls" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42487.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">375</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">16999</span> Performance Analysis of Absorption Power Cycle under Different Source Temperatures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kyoung%20Hoon%20Kim">Kyoung Hoon Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The absorption power generation cycle based on the ammonia-water mixture has attracted much attention for efficient recovery of low-grade energy sources. In this paper, a thermodynamic performance analysis is carried out for a Kalina cycle using ammonia-water mixture as a working fluid for efficient conversion of low-temperature heat source in the form of sensible energy. The effects of the source temperature on the system performance are extensively investigated by using the thermodynamic models. The results show that the source temperature as well as the ammonia mass fraction affects greatly on the thermodynamic performance of the cycle. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ammonia-water%20mixture" title="ammonia-water mixture">ammonia-water mixture</a>, <a href="https://publications.waset.org/abstracts/search?q=Kalina%20cycle" title=" Kalina cycle"> Kalina cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=low-grade%20heat%20source" title=" low-grade heat source"> low-grade heat source</a>, <a href="https://publications.waset.org/abstracts/search?q=source%20temperature" title=" source temperature"> source temperature</a> </p> <a href="https://publications.waset.org/abstracts/22703/performance-analysis-of-absorption-power-cycle-under-different-source-temperatures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22703.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">458</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">16998</span> Thermodynamic Analysis of Zeotropic Mixture Used in Low Temperature Solar Rankine Cycle with Ejector for Power Generation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Basma%20Hamdi">Basma Hamdi</a>, <a href="https://publications.waset.org/abstracts/search?q=Lakdar%20Kairouani"> Lakdar Kairouani</a>, <a href="https://publications.waset.org/abstracts/search?q=Ezzedine%20Nahdi"> Ezzedine Nahdi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The objective of this work is to present a thermodynamic analysis of low temperature solar Rankine cycle with ejector for power generation using zeotropic mixtures. Based on theoretical calculation, effects of zeotropic mixtures compositions on the performance of solar Rankine cycle with ejector are discussed and compared with corresponding pure fluids. Variations of net power output, thermal efficiency were calculating with changing evaporation temperature. The ejector coefficient had analyzed as independent variable. The result show that (R245fa/R152a) has a higher thermal efficiency than using pure fluids. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=zeotropic%20mixture" title="zeotropic mixture">zeotropic mixture</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20analysis" title=" thermodynamic analysis"> thermodynamic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=ejector" title=" ejector"> ejector</a>, <a href="https://publications.waset.org/abstracts/search?q=low-temperature%20solar%20rankine%20cycle" title=" low-temperature solar rankine cycle"> low-temperature solar rankine cycle</a> </p> <a href="https://publications.waset.org/abstracts/58827/thermodynamic-analysis-of-zeotropic-mixture-used-in-low-temperature-solar-rankine-cycle-with-ejector-for-power-generation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58827.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">281</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">16997</span> Effect of Impurities in the Chlorination Process of TiO2</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seok%20Hong%20Min">Seok Hong Min</a>, <a href="https://publications.waset.org/abstracts/search?q=Tae%20Kwon%20Ha"> Tae Kwon Ha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> With the increasing interest on Ti alloys, the extraction process of Ti from its typical ore, TiO<sub>2</sub>, has long been and will be important issue. As an intermediate product for the production of pigment or titanium metal sponge, tetrachloride (TiCl<sub>4</sub>) is produced by fluidized bed using high TiO<sub>2</sub> feedstock. The purity of TiCl<sub>4</sub> after chlorination is subjected to the quality of the titanium feedstock. Since the impurities in the TiCl<sub>4</sub> product are reported to final products, the purification process of the crude TiCl<sub>4</sub> is required. The purification process includes fractional distillation and chemical treatment, which depends on the nature of the impurities present and the required quality of the final product. In this study, thermodynamic analysis on the impurity effect in the chlorination process, which is the first step of extraction of Ti from TiO<sub>2</sub>, has been conducted. All thermodynamic calculations were performed using the FactSage thermodynamical software. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rutile" title="rutile">rutile</a>, <a href="https://publications.waset.org/abstracts/search?q=titanium" title=" titanium"> titanium</a>, <a href="https://publications.waset.org/abstracts/search?q=chlorination%20process" title=" chlorination process"> chlorination process</a>, <a href="https://publications.waset.org/abstracts/search?q=impurities" title=" impurities"> impurities</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20calculation" title=" thermodynamic calculation"> thermodynamic calculation</a>, <a href="https://publications.waset.org/abstracts/search?q=FactSage" title=" FactSage"> FactSage</a> </p> <a href="https://publications.waset.org/abstracts/62214/effect-of-impurities-in-the-chlorination-process-of-tio2" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62214.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">308</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=thermodynamic%20model&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=thermodynamic%20model&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=thermodynamic%20model&page=4">4</a></li> <li class="page-item"><a class="page-link" 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