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High-performance thermomagnetic generator controlled by a magnetocaloric switch

Low grade waste heat accounts for ~65% of total waste heat, but conventional waste heat recovery technology exhibits low conversion efficiency for low grade waste heat recovery. Hence, we designed a thermomagnetic generator for such applications. Unlike its usual role as the coil core or big magneti...

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Autores principales: Liu, Xianliang, Chen, Haodong, Huang, Jianyi, Qiao, Kaiming, Yu, Ziyuan, Xie, Longlong, Ramanujan, Raju V., Hu, Fengxia, Chu, Ke, Long, Yi, Zhang, Hu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10412618/
https://www.ncbi.nlm.nih.gov/pubmed/37558655
http://dx.doi.org/10.1038/s41467-023-40634-x
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author Liu, Xianliang
Chen, Haodong
Huang, Jianyi
Qiao, Kaiming
Yu, Ziyuan
Xie, Longlong
Ramanujan, Raju V.
Hu, Fengxia
Chu, Ke
Long, Yi
Zhang, Hu
author_facet Liu, Xianliang
Chen, Haodong
Huang, Jianyi
Qiao, Kaiming
Yu, Ziyuan
Xie, Longlong
Ramanujan, Raju V.
Hu, Fengxia
Chu, Ke
Long, Yi
Zhang, Hu
author_sort Liu, Xianliang
collection PubMed
description Low grade waste heat accounts for ~65% of total waste heat, but conventional waste heat recovery technology exhibits low conversion efficiency for low grade waste heat recovery. Hence, we designed a thermomagnetic generator for such applications. Unlike its usual role as the coil core or big magnetic yoke in previous works, here the magnetocaloric material acts as a switch that controls the magnetic circuit. This makes it not only have the advantage of flux reversal of the pretzel-like topology, but also present a simpler design, lower magnetic stray field, and higher performance by using less magnetocaloric material than preceding devices. The effects of key structural and system parameters were studied through a combination of experiments and finite element simulations. The optimized max power density P(Dmax) produced by our device is significantly higher than those of other existing active thermomagnetic, thermo, and pyroelectric generators. Such high performance shows the effectiveness of our topology design of magnetic circuit with magnetocaloric switch.
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spelling pubmed-104126182023-08-11 High-performance thermomagnetic generator controlled by a magnetocaloric switch Liu, Xianliang Chen, Haodong Huang, Jianyi Qiao, Kaiming Yu, Ziyuan Xie, Longlong Ramanujan, Raju V. Hu, Fengxia Chu, Ke Long, Yi Zhang, Hu Nat Commun Article Low grade waste heat accounts for ~65% of total waste heat, but conventional waste heat recovery technology exhibits low conversion efficiency for low grade waste heat recovery. Hence, we designed a thermomagnetic generator for such applications. Unlike its usual role as the coil core or big magnetic yoke in previous works, here the magnetocaloric material acts as a switch that controls the magnetic circuit. This makes it not only have the advantage of flux reversal of the pretzel-like topology, but also present a simpler design, lower magnetic stray field, and higher performance by using less magnetocaloric material than preceding devices. The effects of key structural and system parameters were studied through a combination of experiments and finite element simulations. The optimized max power density P(Dmax) produced by our device is significantly higher than those of other existing active thermomagnetic, thermo, and pyroelectric generators. Such high performance shows the effectiveness of our topology design of magnetic circuit with magnetocaloric switch. Nature Publishing Group UK 2023-08-09 /pmc/articles/PMC10412618/ /pubmed/37558655 http://dx.doi.org/10.1038/s41467-023-40634-x Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Liu, Xianliang
Chen, Haodong
Huang, Jianyi
Qiao, Kaiming
Yu, Ziyuan
Xie, Longlong
Ramanujan, Raju V.
Hu, Fengxia
Chu, Ke
Long, Yi
Zhang, Hu
High-performance thermomagnetic generator controlled by a magnetocaloric switch
title High-performance thermomagnetic generator controlled by a magnetocaloric switch
title_full High-performance thermomagnetic generator controlled by a magnetocaloric switch
title_fullStr High-performance thermomagnetic generator controlled by a magnetocaloric switch
title_full_unstemmed High-performance thermomagnetic generator controlled by a magnetocaloric switch
title_short High-performance thermomagnetic generator controlled by a magnetocaloric switch
title_sort high-performance thermomagnetic generator controlled by a magnetocaloric switch
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10412618/
https://www.ncbi.nlm.nih.gov/pubmed/37558655
http://dx.doi.org/10.1038/s41467-023-40634-x
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