for a heat pump, it is the ratio of heat transfer at the output (the hot reservoir) to the work supplied; for a refrigerator or air conditioner, it is the ratio of heat transfer from the cold reservoi...for a heat pump, it is the ratio of heat transfer at the output (the hot reservoir) to the work supplied; for a refrigerator or air conditioner, it is the ratio of heat transfer from the cold reservoir to the work supplied
This page explains how heat pumps, air conditioners, and refrigerators act as reverse heat engines, transferring heat with work input. It highlights the efficiency of heat pumps, which warm spaces by ...This page explains how heat pumps, air conditioners, and refrigerators act as reverse heat engines, transferring heat with work input. It highlights the efficiency of heat pumps, which warm spaces by extracting outdoor heat, and their performance measured by the coefficient of performance (COP), typically higher for smaller temperature differences. An ideal COP is 5.30, while real heat pumps range from 2 to 4.
