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Which constraint limits efficient heat absorption in refrigeration evaporators?

A)Refrigerant pressure drop increases significantly
B)Condenser coil surface area decreases
C)Compressor motor winding resistance decreases
D)Expansion valve orificing becomes partially blocked

💡 Explanation

Significant reduction in pressure drop due to minor internal constriction impairs evaporator coil heat adsorption via the Joule-Thomson effect because the temperature driving process drops alongside pressure; therefore less external heat absorption, rather than other effects occurring from compressor or related system variables.

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