On the influence of thermal hysteresis on the performance of thermomagnetic motors

On the influence of thermal hysteresis on the performance of thermomagnetic motors

Author Bessa, C. V. X. Google Scholar
Ferreira, L. D. R. Google Scholar
Horikawa, O. Google Scholar
Monteiro, J. C. B. Google Scholar
Gandra, F. G. Google Scholar
Gama, S. Autor UNIFESP Google Scholar
Abstract Although thermal hysteresis might be a problem in the magnetocaloric refrigeration, the same is not necessarily true for thermomagnetic motor applications. This work presents a comparison of the magnetocaloric properties of materials with first order magnetic transition (having large or narrow thermal hysteresis) to those with second order magnetic transition, assessing the application of these materials in thermomagnetic motors through a thermodynamic approach. Results show that the larger the thermal hysteresis, the higher the specific work produced in a thermal cycle. This allows operation at higher temperature differences with high efficiency relative to Carnot efficiency, when compared with systems using narrow hysteresis and second order transition materials. Published by AIP Publishing.
xmlui.dri2xhtml.METS-1.0.item-coverage Melville
Language English
Sponsor Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2015/26799-0]
Grant number FAPESP [2015/26799-0]
Date 2017
Published in Journal Of Applied Physics. Melville, v. 122, n. 24, p. -, 2017.
ISSN 0021-8979 (Sherpa/Romeo, impact factor)
Publisher Amer Inst Physics
Extent -
Origin http://dx.doi.org/10.1063/1.5010356
Access rights Closed access
Type Article
Web of Science ID WOS:000418955300024
URI https://repositorio.unifesp.br/handle/11600/53981

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