Refrigeration and Air Conditioning
The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by

O.P)R
O.P)P = (
(
(
O.P.)R + 1
(
O.P.)P = (
O.P.)R + 2
O.P)R - 1
O.P)P = (
O.P.)P = (
(

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