Exam-style question
Try this first
Which of the following best describes the coefficient of performance (COP) of a heat pump?.
- A.The ratio of heat output to work input.
- B.The ratio of work input to heat output.
- C.The total energy consumed by the system.
- D.The efficiency of the heat pump in converting heat to work.
Model answer
What a good answer should say
- The ratio of heat output to work input.
Explanation
Why this works
The coefficient of performance (COP) measures the efficiency of a heat pump by comparing the amount of heat energy delivered to the work energy input, indicating how effectively the system operates.
Common mistake
No common mistake is linked to this question yet.