Journal
JOURNAL OF APPLIED PHYSICS
Volume 118, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4923356
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Funding
- ENOVHEAT project - Innovation Fund Denmark [12-132673]
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We present simulation results of multi-layer active magnetic regenerators using the solid-state refrigerant La(Fe,Mn,Si)(13)H-y. This material presents a large, however quite sharp, isothermal entropy change that requires a careful choice of number of layers and working temperature for multi-layer regenerators. The impact of the number of layers and the sensitivity to the working temperature as well as the temperature span are quantified using a one dimensional numerical model. A study of the sensitivity of variation in Curie temperature through a uniform and normal distribution is also presented. The results show that the nominal cooling power is very sensitive to the Curie temperature variation in the multi-layer regenerators. A standard deviation of the Curie temperature variation for a normal distribution less than 0.6K is suggested in order to achieve sufficient performance of a 15-layer regenerator with Curie temperature spacing of 2 K. (C) 2015 AIP Publishing LLC.
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