A test stand to measure the magnetization work of magnetocaloric materials

Date
2016Author
Ferreira, Lucas Diego Rodrigues
Bessa, Carlos Vinícius Xavier
Gama, Sergio [UNIFESP]
Horikawa, Oswaldo
Type
Trabalho apresentado em eventoISSN
0151-1637Is part of
7th International Conference On Magnetic Refrigeration At Room TemperatureDOI
10.18462/iir.thermag.2016.0059Metadata
Show full item recordAbstract
The experimental apparatus presented in this study is capable of precisely measuring the magnetic force produced by a permanent magnets assembly over a magnetocaluric material at a regulated temperature. This data is then used to calculate the magnetization work necessary to bring the given magnetocaloric sample from zero field up to a 1 T field region over a given magnetic field gradient, for a range of temperatures around the Curie temperature of the material. This magnetization work can be used to compare different magnctocaloric materials, as well as to validate analytic methods to estimate the magnetization work of real applications in magnetic refrigeration, and thermomagnetic motors. Construction details of the test stand are presented as well as results for Gadolinium (Gd) and Manganese Arsenide (MnAs).
Citation
7th International Conference On Magnetic Refrigeration At Room Temperature. Paris, 2016.Keywords
Experimental Test StandMagnetic Systems
Permanent Magnets Assembly
Material Comparisons
Thermomagnetic Motors
Magnetic Refrigeration
Sponsorship
Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2012/09486-0]Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
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