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← TechnologyWhich effect occurs within a refrigeration system when incompatible oils mix with the refrigerant?
A)Reduced heat transfer due to oil fouling✓
B)Increased compressor motor efficiency
C)Lower superheat at the evaporator outlet
D)Decreased expansion valve flow capacity
💡 Explanation
When incompatible oils mix with the refrigerant, oil fouling occurs because the oil's chemical properties impede uniform refrigerant evaporation, reducing heat exchange efficiency. Therefore, reduced heat transfer is the result, rather than efficiency increase, lower superheat, or flow reduction, all requiring optimized oil-refrigerant miscibility.
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