1. a constant that denotes the efficiency of a refrigerator, expressed as the amount of heat removed from a substance being refrigerated divided by the amount of work necessary to remove the heat.
2. A COP is a ratio that measures the amount of energy a heating/cooling appliance outputs to the amount it consumes.
Energy Efficiency Ratio
1 http://www.dictionary.com/browse/coefficient-of-performance (1.); http://www.medallionenergy.com/blog/what-is-a-coefficient-of-performance-cop/ (2.)
Author: Festus Anyangbe