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← ScienceWhen a Carnot heat pump maintains an internal oven temperature considerably higher than ambient, which constraint dominates operational energy costs?
A)Incomplete heat transfer reversibility
B)Conductive heat loss to environment✓
C)Frictional wear within the compressor
D)Work needed for isothermal compression
💡 Explanation
The dominating energy cost arises due to conductive heat loss; the first law demands it works to overcome constant conduction. The mechanism is conduction, because heat flow balances, therefore loss affects consumption rather than compressor wear or inefficiency.
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