How does compressor heat affect the Net Refrigeration Effect (NRE) of an HVAC system?

Compressor heat is a significant contributor to the total heat added to an HVAC system, which in turn affects the Net Refrigeration Effect (NRE). As compressor heat increases, it reduces the NRE, thereby decreasing the system’s cooling capacity. To minimize this impact, designers and operators can consider using high-efficiency compressors, optimizing compressor sizing, and ensuring proper system maintenance to reduce internal heat gains.