Which effect arises when refrigerant mass flow in a heat pump evaporator reduces because of obstruction?

💡 Explanation

When refrigerant mass flow reduces, the refrigerant absorbs less heat, resulting in lower evaporator pressure because of reduced latent heat transfer; this lowers system efficiency. Therefore, decreased coefficient of performance results, rather than increased compressor temperature, lower superheat, or higher subcooling that require different flow changes.

• Which outcome occurs when a scroll compressor in a refrigeration system experiences oil slugging?
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• Which outcome occurs when ground fault interrupter (GFI) trips frequently in coastal electrical distribution systems?
• Which outcome occurs when localized 'hot spots' raise piston temperature?
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