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Abstract
This work presents an experimental investigation on a reciprocating active magnetic regenerator (AMR) refrigerator-demonstrator operating near room temperature. La(Fe, Co)13−x Si x is used as a refrigerant material in the form of multilayer and water as heat transfer fluid to release and absorb heat at the hot and cold sources, respectively. Experimental tests using the multilayer regenerator with an applied magnetic field of 1.45 T have produced a temperature span of 15.6 K, without cooling load. The effects of the following cycle parameters, namely, utilisations, frequencies and mass flow rates, on the AMR cycle performance are presented and discussed. A parametric study was conducted on the behaviour of the temperature span to define the optimum demonstrator parameters to improve performance and validate the concept of multilayer and provide useful data for magnetic refrigerator design.