A heat pump is capable of delivering more energy to the home than goes into the operation of the pump itself, when conditions are favorable. Which of the following statements is correct?
A. A heat pump violates the first law of thermodynamics
B. A heat pump, like the Carnot engine, is a theoretical device that is not useful in practice
C. A heat pump is more efficient when the outside temperature is colder
D. A heat pump violates the second law of thermodynamics
E. A heat pump transfers some energy from the outdoors
Answer: E
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?
?
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