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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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Published in: | Nature communications 2023-08, Vol.14 (1), p.4811-4811, Article 4811 |
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creator | Liu, Xianliang Chen, Haodong Huang, Jianyi Qiao, Kaiming Yu, Ziyuan Xie, Longlong Ramanujan, Raju V. Hu, Fengxia Chu, Ke Long, Yi Zhang, Hu |
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.
The utilization of waste heat is an important way of combining energy saving to emission reductions. Here, authors demonstrate a magnetocaloric material as a controlling switch in a thermomagnetic generator for waste heat recovery. |
doi_str_mv | 10.1038/s41467-023-40634-x |
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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.
The utilization of waste heat is an important way of combining energy saving to emission reductions. Here, authors demonstrate a magnetocaloric material as a controlling switch in a thermomagnetic generator for waste heat recovery.</description><identifier>ISSN: 2041-1723</identifier><identifier>EISSN: 2041-1723</identifier><identifier>DOI: 10.1038/s41467-023-40634-x</identifier><identifier>PMID: 37558655</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>639/166/987 ; 639/301/119/997 ; 639/4077/4072/4062 ; Circuit design ; Emissions control ; Energy conservation ; Heat ; Heat recovery ; Heat recovery systems ; Humanities and Social Sciences ; Magnetic circuits ; Magnetic materials ; multidisciplinary ; Science ; Science (multidisciplinary) ; Topology ; Waste heat ; Waste heat recovery ; Waste recovery ; Waste utilization</subject><ispartof>Nature communications, 2023-08, Vol.14 (1), p.4811-4811, Article 4811</ispartof><rights>The Author(s) 2023</rights><rights>2023. Springer Nature Limited.</rights><rights>The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>Springer Nature Limited 2023</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c541t-98d46a6839f39f1289791c735a526d6dc2f8a8df44c9a139567820c597d2e0173</citedby><cites>FETCH-LOGICAL-c541t-98d46a6839f39f1289791c735a526d6dc2f8a8df44c9a139567820c597d2e0173</cites><orcidid>0000-0001-8726-8605 ; 0000-0003-0383-0213</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/2848020848/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/2848020848?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,25753,27924,27925,37012,37013,44590,53791,53793,75126</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/37558655$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Liu, Xianliang</creatorcontrib><creatorcontrib>Chen, Haodong</creatorcontrib><creatorcontrib>Huang, Jianyi</creatorcontrib><creatorcontrib>Qiao, Kaiming</creatorcontrib><creatorcontrib>Yu, Ziyuan</creatorcontrib><creatorcontrib>Xie, Longlong</creatorcontrib><creatorcontrib>Ramanujan, Raju V.</creatorcontrib><creatorcontrib>Hu, Fengxia</creatorcontrib><creatorcontrib>Chu, Ke</creatorcontrib><creatorcontrib>Long, Yi</creatorcontrib><creatorcontrib>Zhang, Hu</creatorcontrib><title>High-performance thermomagnetic generator controlled by a magnetocaloric switch</title><title>Nature communications</title><addtitle>Nat Commun</addtitle><addtitle>Nat Commun</addtitle><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.
The utilization of waste heat is an important way of combining energy saving to emission reductions. 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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.
The utilization of waste heat is an important way of combining energy saving to emission reductions. Here, authors demonstrate a magnetocaloric material as a controlling switch in a thermomagnetic generator for waste heat recovery.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>37558655</pmid><doi>10.1038/s41467-023-40634-x</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0001-8726-8605</orcidid><orcidid>https://orcid.org/0000-0003-0383-0213</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | 639/166/987 639/301/119/997 639/4077/4072/4062 Circuit design Emissions control Energy conservation Heat Heat recovery Heat recovery systems Humanities and Social Sciences Magnetic circuits Magnetic materials multidisciplinary Science Science (multidisciplinary) Topology Waste heat Waste heat recovery Waste recovery Waste utilization |
title | High-performance thermomagnetic generator controlled by a magnetocaloric switch |
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