Explanation: The isothermal process of a carnot cycle needs very slow motion of the piston to maintain constant temperature while the adiabatic process needs very fast motion to complete the adiabatic process. 6. For a given temperature T1, as the difference between T1 and T2 increases, the COP of a carnot heat pump
A. increases
B. decreases
C. first increases, then decreases
D. none of the mentioned
Answer:A
Explanation: The isothermal process of a carnot cycle needs very slow motion of the piston to maintain constant temperature while the adiabatic process needs very fast motion to complete the adiabatic process. 6. For a given temperature T1, as the difference between T1 and T2 increases, the COP of a carnot heat pump
A. increases B. decreases C. first increases, then decreases D. none of the mentioned