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← ScienceWhich consequence results when frost continuously forms on an evaporator coil?
A)Decreased heat transfer efficiency✓
B)Increased refrigerant subcooling occurs
C)Refrigerant overcharge is more likely
D)Compressor motor operates more efficiently
💡 Explanation
Frost accumulation acts as insulation, decreasing heat transfer efficiency to the evaporator. This occurs because thermal resistance builds through the increased ice thickness; therefore, heat cannot be absorbed that way, rather than having effective heat exchange.
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