U.S. scientists building magnetocaloric heat pump with high system power density

Developed at the U. S. Ames National Laboratory, the novel magnetocaloric heat pump utilizes gadolinium as the working medium and reportedly matches current vapor-compression heat pumps for weight, cost, and performance. The system is based on a packed-particle bed active magnetic regenerator, a magnetic source composed of permanent magnets and high permeability magnetic steel. Scientists at the US Department of Energy's Ames National Laboratory have built a prototype of a magnetocaloric heat pump (MCHP) that purportedly matches current vapor-compression heat pumps for weight, cost, and performance. ...

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