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...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/171515 |
| _version_ | 1824453879718215680 |
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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 |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering 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 | NTU |
| 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 PDmax 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. |
| first_indexed | 2025-02-19T03:13:26Z |
| format | Journal Article |
| id | ntu-10356/171515 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:13:26Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1715152023-10-27T15:46:14Z 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 School of Materials Science and Engineering Engineering::Materials Radioisotope Thermoelectric Generator Global Waste Heat 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 PDmax 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. Published version H.Z. acknowledges the support by the National Natural Science Foundation of China (Grant No. 52171169) and the National Key Research and Development Program of China (Grant No. 2021YFB3501204). K. M. Q. acknowledges the support by the National Natural Science Foundation of China (Grant No. 52101210). F. X. H. also acknowledges the support by the National Natural Science Foundation of China (Grant Nos. 52088101 and 92263202) and the National Key Research and Development Program of China (Grant No. 2019YFA0704900). K. C. thanks the support by the National Natural Science Foundation of China (Grant No. 52161025). 2023-10-27T06:46:13Z 2023-10-27T06:46:13Z 2023 Journal Article Liu, X., Chen, H., Huang, J., Qiao, K., Yu, Z., Xie, L., Ramanujan, R. V., Hu, F., Chu, K., Long, Y. & Zhang, H. (2023). High-performance thermomagnetic generator controlled by a magnetocaloric switch. Nature Communications, 14(1), 4811-. https://dx.doi.org/10.1038/s41467-023-40634-x 2041-1723 https://hdl.handle.net/10356/171515 10.1038/s41467-023-40634-x 37558655 2-s2.0-85167532562 1 14 4811 en Nature Communications © 2023 The Author(s). 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/. application/pdf |
| spellingShingle | Engineering::Materials Radioisotope Thermoelectric Generator Global Waste Heat 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 | Engineering::Materials Radioisotope Thermoelectric Generator Global Waste Heat |
| url | https://hdl.handle.net/10356/171515 |
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