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← TechnologyWhich effect results when differential vapor pressure in a centrifugal refrigerant pump exceeds design limits?
A)Internal cavitation and impeller erosion✓
B)Thermal expansion reduces pump lifespan
C)Increased refrigerant subcooling occurs
D)System-wide refrigerant over-compression arises
💡 Explanation
Cavitation occurs because the decreasing pressure causes refrigerant flashing into vapor preventing effective pumping; the vapor bubble collapse causes pitting. Therefore cavitation erodes pumps, rather than benefiting from temperature reduction or raising downstream pressure.
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