Which of the following statements is true about... - SS2 Physics Heat and Thermodynamics Question
Which of the following statements is true about the coefficient of performance (COP) of a refrigerator or heat pump?
The COP of a refrigerator is always greater than the COP of a heat pump.
The COP of a heat pump is always greater than the COP of a refrigerator.
The COP of a refrigerator and a heat pump are always equal.
The COP of a refrigerator and a heat pump depends on the temperature difference between the reservoirs.
Explanation: The coefficient of performance (COP) of a heat pump is defined as the ratio of the heat transferred from the warm reservoir to the work input, while the COP of a refrigerator is defined as the ratio of the heat removed from the cold reservoir to the work input. Since the heat transferred from the warm reservoir is greater than the heat removed from the cold reservoir, the COP of a heat pump is always greater than the COP of a refrigerator.
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