Which effect occurs when a newly installed HVAC system runs with excessive non-condensable gases mixed within the refrigerant?

💡 Explanation

When excessive non-condensable gases are present, the partial pressure of the refrigerant decreases, thereby leading to higher compression ratios and increased compressor work due to reduced cooling capability, subsequently raising the compressor discharge temperature. Therefore increased discharge temperature results, rather than superheat reduction, subcooling decrease, or optimized lubrication, which have distinct causes related to refrigerant phase changes or oil circulation.

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