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← ScienceWhich risk increases when repeatedly cycling a heat pump using a Carnot cycle with high temperature differentials?
A)Refrigerant compressor mechanical fatigue failure✓
B)Electrical grid power harmonic distortion
C)Heat exchanger thermal runaway effects
D)Reduced coefficient of performance (COP)
💡 Explanation
Repeated, rapid temperature cycling increases mechanical stress on components using the Carnot cycle; this is due to thermal expansion, resulting in greater stress. This causes metal fatigue because the work converts to mechanical changes; therefore the risk of compressor failure increases, rather than electrical or performance degradation.
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