Engineering Board Exam Reviewer · Thermodynamics · easy

The coefficient of performance (COP) of a refrigerator is defined as:

1. Work input divided by refrigerating effect
2. Heat rejected divided by work input
3. Work output divided by heat input
4. Refrigerating effect divided by work input

Answer

D. Refrigerating effect divided by work input

Solution

COPR = QL/W in. It can be greater than 1.

More Thermodynamics questions

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2. In a vapor-compression refrigeration system, the refrigerant absorbs heat from the refrigerated space in the:
3. In the dual (limited-pressure) cycle, heat is added:
4. The Stirling cycle consists of:
5. The Brayton cycle is the ideal cycle for:
6. The Otto cycle is the ideal cycle for:
7. The Carnot cycle consists of:
8. A perpetual motion machine of the second kind (PMM2) violates the:
9. The Clausius statement of the second law says that:
10. The Kelvin–Planck statement of the second law says it is impossible for a device operating in a cycle to:

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