A comprehensive study of a versatile magnetic refrigeration demonstrator

Velázquez, D. (Universidad de Zaragoza) ; Estepa, C. ; Palacios, E. (Universidad de Zaragoza) ; Burriel, R. (Universidad de Zaragoza)

Resumen: 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 ¿ = 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.

Idioma: Inglés

DOI: 10.1016/j.ijrefrig.2015.10.006

Año: 2016

Publicado en: INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID 63 (2016), 14-24
ISSN: 0140-7007

Factor impacto JCR: 2.779 (2016)

Categ. JCR: THERMODYNAMICS rank: 12 / 58 = 0.207 (2016) - Q1 - T1
Categ. JCR: ENGINEERING, MECHANICAL rank: 22 / 130 = 0.169 (2016) - Q1 - T1

Factor impacto SCIMAGO: 1.371 - Mechanical Engineering (Q1) - Building and Construction (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E100
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2013-44063-R

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)