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description Publicationkeyboard_double_arrow_right Article 2023 GermanyPublisher:Elsevier BV Funded by:[no funder available]Streier, Robin; Wirtz, Siegmar; Aleksandrov, Krasimir; Gehrmann, Hans-Joachim;Stapf, Dieter;
Zhang, Miao;Stapf, Dieter
Stapf, Dieter in OpenAIREVogelbacher, Markus;
Matthes, Jörg; Scherer, Viktor;Vogelbacher, Markus
Vogelbacher, Markus in OpenAIREThis research investigates the flight behavior of refuse-derived fuel (RDF) in a drop shaft using Computer Vision to obtain statistical data on the aerodynamic properties of the particles. Methods to determine 3D geometry models of complex-shaped particles by photogrammetry and to obtain time resolved particle positions and velocities are described. Furthermore, an approach to obtain the frequency distribution of drag and lift coefficients from photogrammetric analysis and drop shaft experiments is presented. The image evaluation is based on algorithms of the open-source libraries OpenCV, COLMAP as well as MeshLab and Open3D. The precision of the system is validated employing model particles with known geometry. The 3D particle models overestimate the particle surface area by 4.58 %, the position detection works with a mean deviation of 2.73 %. The average sink rate is calculated with an accuracy of 4.87 % and the drag coefficient with an accuracy of 2.08 %. Finally, the frequency distribution of four RDF fractions, namely, textiles, cardboard, 3D plastic particles and 2D plastic foils are presented.
https://dx.doi.org/1... arrow_drop_down KITopen (Karlsruhe Institute of Technologie)Article . 2023Data sources: Bielefeld Academic Search Engine (BASE)KITopen (Karlsruhe Institute of Technologie)Article . 2023Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.fuel.2023.128847&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
more_vert https://dx.doi.org/1... arrow_drop_down KITopen (Karlsruhe Institute of Technologie)Article . 2023Data sources: Bielefeld Academic Search Engine (BASE)KITopen (Karlsruhe Institute of Technologie)Article . 2023Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.fuel.2023.128847&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2017Embargo end date: 02 Oct 2018 GermanyPublisher:The Electrochemical Society Zachary Lebens-Higgins; Nicholas Faenza; Pinaki Mukherjee; Shawn Sallis; Fadwa Badway; Nathalie Pereira; Christoph Schlueter; Tien-Lin Lee; Frederic Cosandey; Glenn Amatucci;Louis F.J. Piper;
Louis F.J. Piper
Louis F.J. Piper in OpenAIREFor layered oxide cathodes, aluminum doping has widely been shown to improve performance, particularly at high degrees of delithiation. While this has led to increased interest in Al-doped systems, including $\mathrm{LiNi_{0.8}Co_{0.15}Al_{0.05}O_{2}}$ (NCA), the aluminum surface environment has not been thoroughly investigated. Using hard x-ray photoelectron spectroscopy measurements of the Al 1s core region for NCA electrodes, we examined the evolution of the surface aluminum environment under electrochemical and thermal stress. By correlating the aluminum environment to transition metal reduction and electrolyte decomposition, we provide further insight into the cathode-electrolyte interface layer. A remarkable finding is that Al-O coatings in LiPF$_6$ electrolyte mimic the evolution observed for the aluminum surface environment in doped layered oxides. ECS transactions 80(10), 197 - 206 (2017). doi:10.1149/08010.0197ecst Published by Pennington, NJ
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1149/08010.0197ecst&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu4 citations 4 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1149/08010.0197ecst&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2024Publisher:AIP Publishing Authors:Yiwei Hu;
Yiwei Hu
Yiwei Hu in OpenAIREBenlei Wang;
Benlei Wang
Benlei Wang in OpenAIREZhanghua Wu;
Jianying Hu; +2 AuthorsZhanghua Wu
Zhanghua Wu in OpenAIREYiwei Hu;
Yiwei Hu
Yiwei Hu in OpenAIREBenlei Wang;
Benlei Wang
Benlei Wang in OpenAIREZhanghua Wu;
Jianying Hu;Zhanghua Wu
Zhanghua Wu in OpenAIREErcang Luo;
Ercang Luo
Ercang Luo in OpenAIREJingyuan Xu;
Jingyuan Xu
Jingyuan Xu in OpenAIREThermoacoustic technology emerges as a sustainable and low-carbon method for energy conversion, leveraging environmentally friendly working mediums and independence from electricity. This study presents the development of a multimode heat-driven thermoacoustic system designed to utilize medium/low-grade heat sources for room-temperature cooling and heating. We constructed both a simulation model and an experimental prototype for a single-unit direct-coupled thermoacoustic system, exploring its performance in heating-only, cooling-only, and hybrid heating and cooling modes. Internal characteristic analysis including an examination of internal exergy loss and a distribution analysis of key parameters was first conducted in the hybrid cooling and heating mode. The results indicated a positive-focused traveling-wave-dominant acoustic field within the thermoacoustic core unit, enhancing energy conversion efficiency. The output system performance was subsequently tested under different working conditions in the heating-only and cooling-only modes. A maximum output heating power of 2.3 kW and a maximum COPh of 1.41 were observed in the heating-only mode. Meanwhile, a cooling power of 748 W and a COPc of 0.4 were obtained in the typical cooling condition at 7 °C when operating in cooling-only mode. These findings underscore the promising potential of thermoacoustic systems for efficiently utilizing medium/low-grade heat sources for cooling and/or heating applications in the future.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1063/5.0196770&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1063/5.0196770&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 SerbiaPublisher:Elsevier BV Funded by:MESTD | Ministry of Education, Sc...MESTD| Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200172 (Serbian Academy of Sciences and Arts - SASA, Geographical Institute 'Jovan Cvijic', Belgrade)Authors:Milanović-Pešić, Ana;
Brankov, Jovana;Milanović-Pešić, Ana
Milanović-Pešić, Ana in OpenAIREDenda, Stefan;
Denda, Stefan
Denda, Stefan in OpenAIREBjeljac, Željko;
+1 AuthorsBjeljac, Željko
Bjeljac, Željko in OpenAIREMilanović-Pešić, Ana;
Brankov, Jovana;Milanović-Pešić, Ana
Milanović-Pešić, Ana in OpenAIREDenda, Stefan;
Denda, Stefan
Denda, Stefan in OpenAIREBjeljac, Željko;
Bjeljac, Željko
Bjeljac, Željko in OpenAIREMicić, Jasna;
Micić, Jasna
Micić, Jasna in OpenAIREhandle: 21.15107/rcub_dais_13309
In the 21st century, many countries are starting to use geothermal energy (GTE) as a new energy source. Serbia also has the potential to use it as a renewable energy source. The complex geological structure of its terrain has given rise to a large number of thermomineral springs and geothermal wells. Based on the existing measurements, the geothermal heat flow density in Serbia ranges from 80 to 120 mW/m2, which is above Europe's average (60 mW/m2). Currently, there are 66 projects in Serbia that directly use geothermal energy. There are an estimated 1005 geothermal heat pump units. Their power varies between 10 kW and 40 kW and they operate for 2860 full load hours per year. This paper deals with the development, current state and perspectives of geothermal energy utilization for heating in Serbia. To illustrate the current state of geothermal energy utilization in Serbia, spa settlements Vranjska Banja and Gornja Trepča, as well as the Bogatić Municipality have been singled out as examples of good practice. The presented analysis includes determining the available amount of geothermal energy and its utilization for district heating or heating of selected public facilities. The concept and methodology of the presented research are based on data collection through literature review, surveys and field research. The analysis confirms the cost-effectiveness of using geothermal energy and reveals numerous ecological advantages over other energy sources. However, it was concluded that аlthough there is potential, geothermal sources, as a renewable energy source, are used negligibly in Serbia.
Mikra xinakia arrow_drop_down Renewable and Sustainable Energy ReviewsArticle . 2022 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rser.2022.112442&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 10 citations 10 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
visibility 135visibility views 135 download downloads 13 Powered bymore_vert Mikra xinakia arrow_drop_down Renewable and Sustainable Energy ReviewsArticle . 2022 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rser.2022.112442&type=result"></script>'); --> </script>
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