2024-03-29T13:57:05Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1485582017-12-18T14:07:57Zcom_10261_31com_10261_3col_10261_284
Velázquez, David
Estepa, L. C.
Palacios, Elias
Burriel, Ramón
2017-04-20T09:01:51Z
2017-04-20T09:01:51Z
2016
International Journal of Refrigeration 63: 14-24 (2016)
http://hdl.handle.net/10261/148558
10.1016/j.ijrefrig.2015.10.006
http://dx.doi.org/10.13039/501100003329
A versatile room temperature reciprocating magnetic refrigeration demonstrator has been designed, built and tested in order to evaluate the influence of different running parameters and to check suitable magnetocaloric materials for cooling at room temperature. A comprehensive study has been done with Gd spheres of 0.2-0.4 mm diameter arranged as a double regenerator with 15 g each. A Halbach Nd2e14B permanent magnet with a slot of 10 mm width has been used to generate the magnetic field with a maximum value of 1.4 T. The heat transfer fluid is a mixture of water and ethylene glycol in a 75-25 percentage. The demonstrator achieves a maximum no-load temperature span close to 20 K, with a regeneration ratio of ξ = 4.1, and a maximum cooling power Qc = 6 W at zero temperature span. COP values have been shown and different thermodynamic AMR cycles have been studied looking for the best parameters.
eng
closedAccess
Experimentation
Cycle thermodynamique
Magnetic refrigerator
Thermodynamic cycle
Gadolinium
Réfrigérateur magnétique
Expérimentation
Prototype
A comprehensive study of a versatile magnetic refrigeration demonstrator
artículo