Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
790234 | International Journal of Refrigeration | 2014 | 9 Pages |
•A new alternative method for magnetic refrigeration.•High-frequency device is more efficient and economical.•Applicable to magnetic heating, refrigeration and energy conversion.
Magnetic heat pumps, refrigerators and energy conversion prototypes, with an operation based on the magnetocaloric effect, usually show a restriction in their frequency of operation to a few Hertz. In 2010 it was proposed to apply thermal switches to overcome this barrier. In this article thermal switches built with Ni-nanowire Peltier elements are presented and the performance of such elements is discussed on a theoretical and experimental basis. Finally an approximate estimate of the performance of a magnetic refrigerator of the types built up to present is compared to that of a magnetic refrigerator applying nanowire thermal switches.