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← TechnologyWhich outcome occurs when reciprocating refrigerant pump valves experience excessive superheat during compression?
A)Reduced volumetric efficiency and capacity✓
B)Increased condenser subcooling and pressure
C)Decreased evaporator superheat control
D)Elevated compressor oil viscosity and foaming
💡 Explanation
When suction gas reaching the valves has a high superheat, volumetric efficiency declines because the heated gas expands during intake, reducing mass flow and total capacity. Therefore reduced capacity and efficiency results, rather than condenser subcooling, evaporator control issues, or oil degradation, which depend on different component failures.
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