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Title: Refrigeration
Description: Conventional and magnetic refrigeration cycles use different physical effects to cool things off. Top image: When a gas is compressed (2), it heats up, but if it is cooled and then allowed to expand (3), its temperature drops much lower than it was originally (4); this principle keeps food in your home refrigerator cool. But a magnetocaloric material (at bottom) heats up when magnetized (b); if cooled and then demagnetized (c), its temperature drops dramatically (d). NIST scientists may have found a way to use magnetocalorics in your fridge.

*NCNR
Subjects (names):
Topics/Categories:
Type: Graphic/illustration
Source: National Institute of Standards and Technology
Credit Line as it should
appear in print:
Credit: Talbott, NIST
AV Number: 09NCNR002
Date Created: January 27, 2009
Date Entered: 1/27/2009

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