Refrigeration is the process of removing heat from an enclosed space, or from a substance, and moving it to a place where it is unobjectionable. The primary purpose of refrigeration is lowering the temperature of the enclosed space or substance and then maintaining that lower temperature. The term cooling refers generally to any natural or artificial process by which heat is dissipated. The process of artificially producing extreme cold temperatures is referred to as cryogenics.

Cold is the absence of heat, hence in order to decrease a temperature, one "removes heat", rather than "adding cold." In order to satisfy the Second Law of Thermodynamics, some form of work must be performed to accomplish this. This work is traditionally done by mechanical work but can also be done by magnetism, laser or other means.

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'Refrigeration' News
Give it a chill to boost the taste - MiamiHerald.com
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Give it a chill to boost the taste

MiamiHerald.com

I think there are two basic reasons for this: central heating and modern refrigeration . Reds are supposed to be served at ``room temperature. ...
Google News Search: Refrigeration,
Sat Sep 26 10:41:36 2009
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