Which of the following has the minimum value of COP for a given refrigeration effect?
(A) Reverse Carnot cycle
(B) Ordinary vapour-compression cycle
(C) Vapour-compression process with a reversible expansion engine (D) Air refrigeration cycle
(A) Reverse Carnot cycle
(B) Ordinary vapour-compression cycle
(C) Vapour-compression process with a reversible expansion engine (D) Air refrigeration cycle