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class="entry-header ast-header-without-markup"> </header> <div class="entry-content clear" itemprop="text" > <div data-elementor-type="wp-post" data-elementor-id="588" class="elementor elementor-588"> <div class="elementor-inner"> <div class="elementor-section-wrap"> <section class="elementor-section elementor-top-section elementor-element elementor-element-73c24fec elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="73c24fec" data-element_type="section" data-settings="{"background_background":"classic"}"> <div class="elementor-background-overlay"></div> <div class="elementor-container elementor-column-gap-no"> <div class="elementor-row"> <div class="elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-780e40d3" data-id="780e40d3" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-740de74a elementor-widget elementor-widget-heading" data-id="740de74a" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h1 class="elementor-heading-title elementor-size-default">new test rig</h1> </div> </div> </div> </div> </div> </div> </div> </section> <section class="elementor-section elementor-top-section elementor-element elementor-element-9b90212 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="9b90212" data-element_type="section"> <div class="elementor-container elementor-column-gap-default"> <div class="elementor-row"> <div class="elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0e0d662" data-id="0e0d662" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-1aad1ef elementor-widget elementor-widget-text-editor" data-id="1aad1ef" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>A new combustion test rig was built for a wide range of liquid and gaseous fuels, or dual-fuel combustion. Acoustic, chemiluminescence, and pollutant emission measurements are available with our instruments. Furthermore, high-speed Schlieren measurements and Phase Doppler Anemometry were performed during the summer of 2021. The instruments were brought by Dr. Milan Mal媒 from the Brno University of Technology. The project is hosted by the George Jendrassik laboratory of Department of Energy Engineering. The construction of the test rig and its instrumentation were funded by the OTKA-FK 124704 and the 137758 grants by the National Research, Development and Innovation Office.</p> </div> </div> </div> </div> </div> </div> </div> </div> </section> <section class="elementor-section elementor-top-section elementor-element elementor-element-06cf54f elementor-section-content-top elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="06cf54f" data-element_type="section"> <div class="elementor-container elementor-column-gap-no"> <div class="elementor-row"> <div class="elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f30065d" data-id="f30065d" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <section class="elementor-section elementor-inner-section elementor-element elementor-element-a839e3a elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="a839e3a" data-element_type="section"> <div class="elementor-container elementor-column-gap-default"> <div class="elementor-row"> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-4bb2f1e" data-id="4bb2f1e" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-ba8031c elementor-widget elementor-widget-image" data-id="ba8031c" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="928" height="1392" src="https://crg.energia.bme.hu/wp-content/uploads/2022/03/CRG_0016.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2022/03/CRG_0016.jpg 928w, https://crg.energia.bme.hu/wp-content/uploads/2022/03/CRG_0016-200x300.jpg 200w, https://crg.energia.bme.hu/wp-content/uploads/2022/03/CRG_0016-683x1024.jpg 683w, https://crg.energia.bme.hu/wp-content/uploads/2022/03/CRG_0016-768x1152.jpg 768w" sizes="(max-width: 928px) 100vw, 928px" /> </div> </div> </div> </div> </div> </div> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-c240839" data-id="c240839" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-df2e7d9 elementor-widget elementor-widget-heading" data-id="df2e7d9" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">System completed</h4> </div> </div> <div class="elementor-element elementor-element-1f81364 elementor-widget elementor-widget-text-editor" data-id="1f81364" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>The combustion test rig is completed now with 100% success. A new combustion mode, Mixtrure Temperature Controlled (MTC), was discovered that delivers ultra-low emissions and distributed combustion without internal or external recirculation, which is typical for MILD combustion. We are looking forward for future tests and expanding the rig with new instruments to better understand MTC combustion and its operation since it is not predicted by any theory that it should exist under the set operating conditions. Upon a better understanding, our group will focus on its introduction to practical applications, like furnaces, boilers, and gas turbines.</p> </div> </div> </div> <div class="elementor-element elementor-element-f2152b5 elementor-widget elementor-widget-text-editor" data-id="f2152b5" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">20.01.2020</span></h5> </div> </div> </div> </div> </div> </div> </div> </div> </section> <section class="elementor-section elementor-inner-section elementor-element elementor-element-e57abf5 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="e57abf5" data-element_type="section"> <div class="elementor-container elementor-column-gap-default"> <div class="elementor-row"> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-aad6ec4" data-id="aad6ec4" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-10ad4ba elementor-widget elementor-widget-image" data-id="10ad4ba" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="800" height="908" src="https://crg.energia.bme.hu/wp-content/uploads/2019/12/system.png" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/12/system.png 800w, https://crg.energia.bme.hu/wp-content/uploads/2019/12/system-264x300.png 264w, https://crg.energia.bme.hu/wp-content/uploads/2019/12/system-768x872.png 768w" sizes="(max-width: 800px) 100vw, 800px" /> </div> </div> </div> <div class="elementor-element elementor-element-215e3c7 elementor-widget elementor-widget-heading" data-id="215e3c7" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">First systematic tests</h4> </div> </div> <div class="elementor-element elementor-element-ff26004 elementor-widget elementor-widget-text-editor" data-id="ff26004" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>The system integrity was stretched by a series of coconut methyl ester biodiesel test which is now evaluated and the results are prepared for publication. This is the first result that relies solely on the new combustion test rig.</p> </div> </div> </div> <div class="elementor-element elementor-element-a6e4548 elementor-widget elementor-widget-text-editor" data-id="a6e4548" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">14.12.2019</span></h5> </div> </div> </div> </div> </div> </div> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-47d87ae" data-id="47d87ae" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-df22c73 elementor-widget elementor-widget-image" data-id="df22c73" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="1516" height="1996" src="https://crg.energia.bme.hu/wp-content/uploads/2019/10/diesel_blue.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/10/diesel_blue.jpg 1516w, https://crg.energia.bme.hu/wp-content/uploads/2019/10/diesel_blue-228x300.jpg 228w, https://crg.energia.bme.hu/wp-content/uploads/2019/10/diesel_blue-768x1011.jpg 768w, https://crg.energia.bme.hu/wp-content/uploads/2019/10/diesel_blue-778x1024.jpg 778w" sizes="(max-width: 1516px) 100vw, 1516px" /> </div> </div> </div> <div class="elementor-element elementor-element-2537471 elementor-widget elementor-widget-heading" data-id="2537471" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">liquid fuel combustion is performed</h4> </div> </div> <div class="elementor-element elementor-element-e305bc5 elementor-widget elementor-widget-text-editor" data-id="e305bc5" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>After solving all the issues in the fuel line, adding the windows and closing the combustion chamber, finally, liquid fuel combustion with diesel oil was successful. This is the most significant milestone in the system. In the next step, we will calibrate the sensors and update our data acquisition system. Then testing various renewable fuels will come.</p> </div> </div> </div> <div class="elementor-element elementor-element-31dcd88 elementor-widget elementor-widget-text-editor" data-id="31dcd88" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">24.10.2019</span></h5> </div> </div> </div> </div> </div> </div> </div> </div> </section> <section class="elementor-section elementor-inner-section elementor-element elementor-element-28bfbee elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="28bfbee" data-element_type="section"> <div class="elementor-container elementor-column-gap-default"> <div class="elementor-row"> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-f3ae722" data-id="f3ae722" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-4fe10ec elementor-widget elementor-widget-image" data-id="4fe10ec" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="2288" height="2934" src="https://crg.energia.bme.hu/wp-content/uploads/2019/10/ng_w_glass.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/10/ng_w_glass.jpg 2288w, https://crg.energia.bme.hu/wp-content/uploads/2019/10/ng_w_glass-234x300.jpg 234w, https://crg.energia.bme.hu/wp-content/uploads/2019/10/ng_w_glass-768x985.jpg 768w, https://crg.energia.bme.hu/wp-content/uploads/2019/10/ng_w_glass-799x1024.jpg 799w" sizes="(max-width: 2288px) 100vw, 2288px" /> </div> </div> </div> <div class="elementor-element elementor-element-42f5bc0 elementor-widget elementor-widget-heading" data-id="42f5bc0" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">Windows were added</h4> </div> </div> <div class="elementor-element elementor-element-10bb9af elementor-widget elementor-widget-text-editor" data-id="10bb9af" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>The combustion chamber window slots were empty until the operation becomes smooth, and the ignition is solved. Since the flat quartz plates are rather expensive and shipping takes a long time, we wanted to avoid any unnecessary damage to them. Interestingly, the mixing tube glasses, which are pipes, are much cheaper and locally available. The combustion conditions have been significantly changed; you can see that the chamber is glowing red, unlike in all the previous pictures. Note that the reason for asymmetrical behavior is that there is a cooled sensor socket on the left side. For evaluation, Pt100 resistance thermometers were added to it, and the system successfully withstood the hot flame next to that.</p> </div> </div> </div> <div class="elementor-element elementor-element-d07043d elementor-widget elementor-widget-text-editor" data-id="d07043d" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">09.10.2019</span></h5> </div> </div> </div> </div> </div> </div> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-3b622b8" data-id="3b622b8" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-f590b22 elementor-widget elementor-widget-image" data-id="f590b22" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="3024" height="4032" src="https://crg.energia.bme.hu/wp-content/uploads/2019/09/IMG_3208.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/09/IMG_3208.jpg 3024w, https://crg.energia.bme.hu/wp-content/uploads/2019/09/IMG_3208-225x300.jpg 225w, https://crg.energia.bme.hu/wp-content/uploads/2019/09/IMG_3208-768x1024.jpg 768w" sizes="(max-width: 3024px) 100vw, 3024px" /> </div> </div> </div> <div class="elementor-element elementor-element-faa76dc elementor-widget elementor-widget-heading" data-id="faa76dc" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">The cooling system has been installed</h4> </div> </div> <div class="elementor-element elementor-element-eedaaa4 elementor-widget elementor-widget-text-editor" data-id="eedaaa4" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>The cooling of the microphone is necessary since it withstands temperatures up to 125 掳C. Hence, the designed cooled sensor socked was connected to a liquid cooling system that was originally designed for a PC. The quartz windows were still missing from the combustion chamber, however, their cooling system was also installed. The last missing item from the setup is the igniter that will be resolved soon. This is the last item that is required for full functionality.</p> </div> </div> </div> <div class="elementor-element elementor-element-cc17dbc elementor-widget elementor-widget-text-editor" data-id="cc17dbc" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">25.09.2019</span></h5> </div> </div> </div> </div> </div> </div> </div> </div> </section> <section class="elementor-section elementor-inner-section elementor-element elementor-element-5db2cda elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="5db2cda" data-element_type="section"> <div class="elementor-container elementor-column-gap-default"> <div class="elementor-row"> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a78c145" data-id="a78c145" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-97603ae elementor-widget elementor-widget-image" data-id="97603ae" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="2112" height="3472" src="https://crg.energia.bme.hu/wp-content/uploads/2019/08/diesel_flame.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/08/diesel_flame.jpg 2112w, https://crg.energia.bme.hu/wp-content/uploads/2019/08/diesel_flame-182x300.jpg 182w, https://crg.energia.bme.hu/wp-content/uploads/2019/08/diesel_flame-768x1263.jpg 768w, https://crg.energia.bme.hu/wp-content/uploads/2019/08/diesel_flame-623x1024.jpg 623w" sizes="(max-width: 2112px) 100vw, 2112px" /> </div> </div> </div> <div class="elementor-element elementor-element-b2bd7a1 elementor-widget elementor-widget-heading" data-id="b2bd7a1" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">Liquid fuel combustion test is completed</h4> </div> </div> <div class="elementor-element elementor-element-aad6359 elementor-widget elementor-widget-text-editor" data-id="aad6359" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>Today is a turning point in the research project. We managed to test all the designed operating conditions of the new test rig. However, this is only the beginning of scientific work to be performed. All the connecting subsystems work flawlessly along with the low-frequency data acquisitions system. There are still several problems to solve, however, the modular structure allows us to work on the rig efficiently.</p> </div> </div> </div> <div class="elementor-element elementor-element-0257ccd elementor-widget elementor-widget-text-editor" data-id="0257ccd" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">15.08.2019</span></h5> </div> </div> </div> </div> </div> </div> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-7fa1164" data-id="7fa1164" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-1604386 elementor-widget elementor-widget-image" data-id="1604386" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="2564" height="3320" src="https://crg.energia.bme.hu/wp-content/uploads/2019/08/hybird.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/08/hybird.jpg 2564w, https://crg.energia.bme.hu/wp-content/uploads/2019/08/hybird-232x300.jpg 232w, https://crg.energia.bme.hu/wp-content/uploads/2019/08/hybird-768x994.jpg 768w, https://crg.energia.bme.hu/wp-content/uploads/2019/08/hybird-791x1024.jpg 791w" sizes="(max-width: 2564px) 100vw, 2564px" /> </div> </div> </div> <div class="elementor-element elementor-element-7614f27 elementor-widget elementor-widget-heading" data-id="7614f27" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">Dual fuel combustion test: done</h4> </div> </div> <div class="elementor-element elementor-element-916e96f elementor-widget elementor-widget-text-editor" data-id="916e96f" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>Following the easier operation with natural gas, the system was prepared for liquid fuel combustion. As the test fuel was diesel oil, a certain extent of air preheating is necessary for smooth operation. The set temperature was only 250 掳C initially, which resulted in incomplete fuel evaporation yet. However, a stable operation was achieved with the addition of ~20% natural gas. Calibration of the liquid fuel system’s sensors are under way, and a precision pressure regulator valve will replace the currently used standard variant. It is expected that the test rig will be ready for the first tests with liquid fuels by the end of this month.</p> </div> </div> </div> <div class="elementor-element elementor-element-dd3fd1e elementor-widget elementor-widget-text-editor" data-id="dd3fd1e" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">08.08.2019</span></h5> </div> </div> </div> </div> </div> </div> </div> </div> </section> <section class="elementor-section elementor-inner-section elementor-element elementor-element-a84752b elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="a84752b" data-element_type="section"> <div class="elementor-container elementor-column-gap-default"> <div class="elementor-row"> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-b49b1f1" data-id="b49b1f1" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-67b350e elementor-widget elementor-widget-image" data-id="67b350e" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="2564" height="3320" src="https://crg.energia.bme.hu/wp-content/uploads/2019/08/hybird.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/08/hybird.jpg 2564w, https://crg.energia.bme.hu/wp-content/uploads/2019/08/hybird-232x300.jpg 232w, https://crg.energia.bme.hu/wp-content/uploads/2019/08/hybird-768x994.jpg 768w, https://crg.energia.bme.hu/wp-content/uploads/2019/08/hybird-791x1024.jpg 791w" sizes="(max-width: 2564px) 100vw, 2564px" /> </div> </div> </div> <div class="elementor-element elementor-element-3cff2b6 elementor-widget elementor-widget-heading" data-id="3cff2b6" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">First successful hot test is complete</h4> </div> </div> <div class="elementor-element elementor-element-64c2610 elementor-widget elementor-widget-text-editor" data-id="64c2610" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>The first hot tests were successful with natural gas as fuel. Even though the picture shows a state with 18 kW thermal power instead of the desired 30 kW, the system performed otherwise flawlessly. Just before this test, the airblast atomizer also performed well with distilled water. The most difficult part of the assembly was to ensure that the central fuel pipe stays there in the small orifice and the annular atomizing medium channel is maintained.</p> </div> </div> </div> <div class="elementor-element elementor-element-da45446 elementor-widget elementor-widget-text-editor" data-id="da45446" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">04.06.2019</span></h5> </div> </div> </div> </div> </div> </div> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-eaeab42" data-id="eaeab42" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-d70f243 elementor-widget elementor-widget-image" data-id="d70f243" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="1102" height="1469" src="https://crg.energia.bme.hu/wp-content/uploads/2019/05/P1030065.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/05/P1030065.jpg 1102w, https://crg.energia.bme.hu/wp-content/uploads/2019/05/P1030065-225x300.jpg 225w, https://crg.energia.bme.hu/wp-content/uploads/2019/05/P1030065-768x1024.jpg 768w" sizes="(max-width: 1102px) 100vw, 1102px" /> </div> </div> </div> <div class="elementor-element elementor-element-04a9c30 elementor-widget elementor-widget-heading" data-id="04a9c30" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">Data acquisition system is online</h4> </div> </div> <div class="elementor-element elementor-element-0b2fe97 elementor-widget elementor-widget-text-editor" data-id="0b2fe97" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>The measurement system consists of Pt100 resistance thermometers, T and K-type thermocouples, 4-20 mA pressure transducers, and flow meters with 4-20 mA and 0-5 V configurations. All these data will be recorded at 1 Hz since the system will operate in a steady state. This part is the low-frequency DAQ system which is responsible for controlling the environment to provide smooth intakes and record all the variables to facilitate repeatability.</p> </div> </div> </div> <div class="elementor-element elementor-element-8cf3ff1 elementor-widget elementor-widget-text-editor" data-id="8cf3ff1" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">05.04.2019</span></h5> </div> </div> </div> </div> </div> </div> </div> </div> </section> <section class="elementor-section elementor-inner-section elementor-element elementor-element-8d1b1aa elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="8d1b1aa" data-element_type="section"> <div class="elementor-container elementor-column-gap-default"> <div class="elementor-row"> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-7addf79" data-id="7addf79" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-9ccade1 elementor-widget elementor-widget-image" data-id="9ccade1" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="1036" height="1468" src="https://crg.energia.bme.hu/wp-content/uploads/2019/05/P1030068.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/05/P1030068.jpg 1036w, https://crg.energia.bme.hu/wp-content/uploads/2019/05/P1030068-212x300.jpg 212w, https://crg.energia.bme.hu/wp-content/uploads/2019/05/P1030068-768x1088.jpg 768w, https://crg.energia.bme.hu/wp-content/uploads/2019/05/P1030068-723x1024.jpg 723w" sizes="(max-width: 1036px) 100vw, 1036px" /> </div> </div> </div> <div class="elementor-element elementor-element-5e206c9 elementor-widget elementor-widget-heading" data-id="5e206c9" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">Exhaust gas system is assembled</h4> </div> </div> <div class="elementor-element elementor-element-bad10f7 elementor-widget elementor-widget-text-editor" data-id="bad10f7" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>The flue gas system is consisting of a hood which allows ambient air entrainment. This is mandatory to ensure that the hot flue gas is below 200 掳C when it enters the fan. There is a thermocouple before that, and the power can be adjusted by using a frequency converter. The system ran flawlessly at the first test.</p> </div> </div> </div> <div class="elementor-element elementor-element-097ea67 elementor-widget elementor-widget-text-editor" data-id="097ea67" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">01.03.2019</span></h5> </div> </div> </div> </div> </div> </div> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-8defb35" data-id="8defb35" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-6f79983 elementor-widget elementor-widget-image" data-id="6f79983" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="1740" height="1256" src="https://crg.energia.bme.hu/wp-content/uploads/2019/02/rig_2.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/02/rig_2.jpg 1740w, https://crg.energia.bme.hu/wp-content/uploads/2019/02/rig_2-300x217.jpg 300w, https://crg.energia.bme.hu/wp-content/uploads/2019/02/rig_2-768x554.jpg 768w, https://crg.energia.bme.hu/wp-content/uploads/2019/02/rig_2-1024x739.jpg 1024w" sizes="(max-width: 1740px) 100vw, 1740px" /> </div> </div> </div> <div class="elementor-element elementor-element-9544c1a elementor-widget elementor-widget-heading" data-id="9544c1a" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">First cold test run is completed!</h4> </div> </div> <div class="elementor-element elementor-element-0cb623b elementor-widget elementor-widget-text-editor" data-id="0cb623b" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>During the design phase, it became evident that the combustion air fan of the system is a key component which should be selected after testing the assembly. However, preceding calculations were made, the combustion air preheater is a complex device to estimate its pressure drop. Therefore, the measurement of flow characteristics required all the burner system assembled which was completed this week. Since the fan of the old test rig was big enough to surely provide the demanded flow rate, it was used to determine the design requirements of the new fan. The effect of air preheating greatly affect the pressure drop, so the combustion air temperature was increased from ambient to 400 掳C in 100 掳C steps. The task of the upcoming weeks will be the assembly of the flue gas system and the preparation of the burner for hot tests.</p> </div> </div> </div> <div class="elementor-element elementor-element-aa12a34 elementor-widget elementor-widget-text-editor" data-id="aa12a34" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">08.02.2019</span></h5> </div> </div> </div> </div> </div> </div> </div> </div> </section> <section class="elementor-section elementor-inner-section elementor-element elementor-element-d3ff6dd elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="d3ff6dd" data-element_type="section"> <div class="elementor-container elementor-column-gap-default"> <div class="elementor-row"> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-65740f3" data-id="65740f3" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-68a0563 elementor-widget elementor-widget-image" data-id="68a0563" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="1536" height="2048" src="https://crg.energia.bme.hu/wp-content/uploads/2019/01/K茅p0520.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/01/K茅p0520.jpg 1536w, https://crg.energia.bme.hu/wp-content/uploads/2019/01/K茅p0520-225x300.jpg 225w, https://crg.energia.bme.hu/wp-content/uploads/2019/01/K茅p0520-768x1024.jpg 768w" sizes="(max-width: 1536px) 100vw, 1536px" /> </div> </div> </div> <div class="elementor-element elementor-element-9a8abac elementor-widget elementor-widget-heading" data-id="9a8abac" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">Front panel of the power electronic box is getting ready</h4> </div> </div> <div class="elementor-element elementor-element-5f4a24d elementor-widget elementor-widget-text-editor" data-id="5f4a24d" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>The previous test rig required too many manual adjustments at several places by the end which required automation and simplification. We are in the middle of the electric design, and only one thing is sure. There will be numerous lamps and buttons. 馃檪 The above image is just the beginning.</p> </div> </div> </div> <div class="elementor-element elementor-element-25c5354 elementor-widget elementor-widget-text-editor" data-id="25c5354" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">18.01.2019</span></h5> </div> </div> </div> </div> </div> </div> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-8f5f802" data-id="8f5f802" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-0bfd915 elementor-widget elementor-widget-image" data-id="0bfd915" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="1315" height="828" src="https://crg.energia.bme.hu/wp-content/uploads/2019/01/burner-design.png" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/01/burner-design.png 1315w, https://crg.energia.bme.hu/wp-content/uploads/2019/01/burner-design-300x189.png 300w, https://crg.energia.bme.hu/wp-content/uploads/2019/01/burner-design-768x484.png 768w, https://crg.energia.bme.hu/wp-content/uploads/2019/01/burner-design-1024x645.png 1024w" sizes="(max-width: 1315px) 100vw, 1315px" /> </div> </div> </div> <div class="elementor-element elementor-element-91d0e9d elementor-widget elementor-widget-heading" data-id="91d0e9d" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">3D model of the burner is complete</h4> </div> </div> <div class="elementor-element elementor-element-179ad7c elementor-widget elementor-widget-text-editor" data-id="179ad7c" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>The burner design is ready; now it is submitted for production. It features three inlet ports. The central one is for liquid fuels; the concentric one is for atomizing air. Even though the efficiency of plain-jet airblast atomizer is low, it is convenient for laboratory use. The third intake is responsible for setting the swirl number by injecting air through several side holes. Also, these holes may serve for gaseous fuel injection.</p> </div> </div> </div> <div class="elementor-element elementor-element-d879b65 elementor-widget elementor-widget-text-editor" data-id="d879b65" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">03.05.2018</span></h5> </div> </div> </div> </div> </div> </div> </div> </div> </section> <section class="elementor-section elementor-inner-section elementor-element elementor-element-793e9b0 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="793e9b0" data-element_type="section"> <div class="elementor-container elementor-column-gap-default"> <div class="elementor-row"> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-1fed56c" data-id="1fed56c" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-1d495bc elementor-widget elementor-widget-image" data-id="1d495bc" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="2448" height="1836" src="https://crg.energia.bme.hu/wp-content/uploads/2019/01/rig-bg.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/01/rig-bg.jpg 2448w, https://crg.energia.bme.hu/wp-content/uploads/2019/01/rig-bg-300x225.jpg 300w, https://crg.energia.bme.hu/wp-content/uploads/2019/01/rig-bg-768x576.jpg 768w, https://crg.energia.bme.hu/wp-content/uploads/2019/01/rig-bg-1024x768.jpg 1024w" sizes="(max-width: 2448px) 100vw, 2448px" /> </div> </div> </div> <div class="elementor-element elementor-element-5d0981b elementor-widget elementor-widget-heading" data-id="5d0981b" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">Framework is assembled</h4> </div> </div> <div class="elementor-element elementor-element-55ba6d3 elementor-widget elementor-widget-text-editor" data-id="55ba6d3" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>We have received the framework of the new test rig and it is now fully assembled. The core part is the burner which is under design. Until the manufacturing completes, the pneumatic and fuels systems will be prepared.</p> </div> </div> </div> <div class="elementor-element elementor-element-93c457a elementor-widget elementor-widget-text-editor" data-id="93c457a" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">17.04.2018</span></h5> </div> </div> </div> </div> </div> </div> <div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-d75f9d3" data-id="d75f9d3" data-element_type="column"> <div class="elementor-column-wrap elementor-element-populated"> <div class="elementor-widget-wrap"> <div class="elementor-element elementor-element-0e69ad4 elementor-widget elementor-widget-image" data-id="0e69ad4" data-element_type="widget" data-widget_type="image.default"> <div class="elementor-widget-container"> <div class="elementor-image"> <img decoding="async" width="1836" height="2448" src="https://crg.energia.bme.hu/wp-content/uploads/2019/01/tank1.jpg" class="attachment-full size-full" alt="" loading="lazy" srcset="https://crg.energia.bme.hu/wp-content/uploads/2019/01/tank1.jpg 1836w, https://crg.energia.bme.hu/wp-content/uploads/2019/01/tank1-225x300.jpg 225w, https://crg.energia.bme.hu/wp-content/uploads/2019/01/tank1-768x1024.jpg 768w" sizes="(max-width: 1836px) 100vw, 1836px" /> </div> </div> </div> <div class="elementor-element elementor-element-9af0ea8 elementor-widget elementor-widget-heading" data-id="9af0ea8" data-element_type="widget" data-widget_type="heading.default"> <div class="elementor-widget-container"> <h4 class="elementor-heading-title elementor-size-default">Liquid supply tank</h4> </div> </div> <div class="elementor-element elementor-element-65ea260 elementor-widget elementor-widget-text-editor" data-id="65ea260" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <p>Delivering a constant mass flow rate is quite challenging. Only volumetric pumps exist in the ~1 g/s range which generates oscillations. One solution is choking the flow, however, a more convenient way to use a pressurized tank. A needle valve performs raw adjusting while the gauge pressure does fine tuning. This simple system performed excellently through several test sessions.</p> </div> </div> </div> <div class="elementor-element elementor-element-2f256ba elementor-widget elementor-widget-text-editor" data-id="2f256ba" data-element_type="widget" data-widget_type="text-editor.default"> <div class="elementor-widget-container"> <div class="elementor-text-editor elementor-clearfix"> <h5><span style="color: #000000;">03.04.2018</span></h5> </div> </div> </div> </div> </div> </div> </div> </div> </section> </div> </div> </div> </div> </div> </section> </div> </div> </div> </div> </article> </main> </div> </div>  </div> <footer itemtype="https://schema.org/WPFooter" itemscope="itemscope" id="colophon" role="contentinfo"> <div class='footer-width-fixer'> <div data-elementor-type="wp-post" data-elementor-id="108" class="elementor elementor-108"> <div class="elementor-inner"> <div class="elementor-section-wrap"> <section class="elementor-section elementor-top-section elementor-element 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