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Which outcome results when a refrigeration compressor exceeds its engineered superheat limits?

A)Vapor compression inefficiency
B)Oil breakdown and reduced lubrication
C)Evaporator coil ice blockage
D)Condenser subcooling optimization

💡 Explanation

Excessive superheat leads to high discharge temperatures where thermal decomposition of lubricating oil occurs; this is the mechanism of thermal cracking . Because the oil's viscosity declines rapidly, lubrication fails; therefore, bearing wear accelerates, rather than efficiency increasing as in option D.

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