For a Carnot heat pump: From the T-s-diagram, we obtain: Q ab =Q H = T H 2→1. Q zu =Q L = T L 4→3. ΔS 2→1 = – ΔS 4→3. Therefore. For a Carnot refrigerator: For a Carnot heat pump: According to coefficient of performance (COP), we can also draw the following conclusions: The coefficient of performance (COP) of a reversed Carnot cycle ...