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Magnetic heat pumping near room temperature
Abstract
Magnetic heat pumping can be made practical at room temperature by using a ferromagnetic material with a Curie point in or near the operating temperature range and an appropriate regenerative thermodynamic cycle. Rare earths are found to be much more effective in this application than transition elements, and measurements have been made which show that gadolinium (Curie point: 293 °K) is a reasonable working material. The application of a 7-T magnetic field to Gd at the Curie point causes a heat release of 4 kJ/kg under isothermal conditions or a temperature rise of 14 °K under adiabatic conditions. A regeneration technique is proposed which removes the limits usually expected on the temperature span of a magnetic cycle. The cycle efficiency can approach the Carnot-cycle efficiency.
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Metadata
- Authors
- Brown, G. V.
- Venue
- Journal of Applied Physics
- Publisher
- AIP Publishing
- Published
- 1976-08-01
- Volume
- 47
- Issue
- 8
- Pages
- 3673-3680
- ISSN
- 0021-8979 (ISSN-L)
- 1089-7550
- OpenAlex
- W2008483960
- Cited by
- 973
- References
- 0
- FWCI
- 2.22
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Magnetic heat pumping near room temperature. https://app.cochat.ai/papers/10.1063/1.323176
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- Brown, G. V. (1976). Magnetic heat pumping near room temperature. Journal of Applied Physics. https://doi.org/10.1063/1.323176
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
