Basic principles and possible configurations of magnetic heat pumps

Conference · Thu Jan 01 04:00:00 EST 1981 · ASHRAE Trans.; (United States)

OSTI ID:6382713

Brown, G V

(1) The basic principle of magnetic heat pumping have been presented and are fairly simple. The requirements for a room temperature cycle are (1) to use a rare earth-based ferromagnet near its Curie point, and (2) to use a regenerative cycle. To obtain the best efficiency (which ideally could approach that of the Carnot Cycle), it is necessary to vary the field strength in a prescribed way during the cycle or to utilize a mixture of magnetic materials. Several possible variations of the overall form of the magnetic heat pump have been presented, as well as some alternative forms of the magnetic refrigerant core. Other new configurations may well be conceived to utilize the attractive characteristics of magnetic thermodynamic cycles effectively. 8 refs.

• Research Organization: NASA, Lewis Res Cent, Cleveland, OH, USA
• OSTI ID: 6382713
• Report Number(s): CONF-810657-
• Conference Information: Journal Name: ASHRAE Trans.; (United States) Journal Volume: 87
• Country of Publication: United States
• Language: English

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CRYOGENICS
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ENERGY EFFICIENCY
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MAGNETIC REFRIGERATORS
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