Which outcome occurs inside a refrigeration system when non-condensables accumulate increasing system head pressure?

💡 Explanation

When non-condensables like air accumulate, the partial pressure increases total system pressure because the working fluid only occupies a portion of the volume, raising condensing temperature at a given pressure, reducing the temperature differential between the refrigerant and cooling medium. Therefore the condenser's capacity declines, as opposed to superheat, viscosity etc that require other issues.

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