Why cop of a chiller is greater than 1?

Answer 1

The coefficient of performance (COP) of a chiller is greater than 1 because it measures the ratio of the cooling output to the electrical energy input. Essentially, chillers transfer heat from a lower temperature source to a higher temperature sink, allowing them to provide more cooling energy than the electrical energy they consume. This efficiency arises from the principles of thermodynamics, where the system can move heat rather than generating it, resulting in a COP that exceeds unity.