The design of discharge pressure of a compressor primarily depends on what?

The design of the discharge pressure of a compressor is primarily influenced by the type of refrigerant used in the system. Each refrigerant operates within specific pressure and temperature ranges, which are determined by its thermodynamic properties. The discharge pressure must be sufficient to overcome the pressure drops in the system and effectively circulate the refrigerant through the condenser and throughout the refrigeration cycle.

Since different refrigerants have distinct boiling points and saturation pressures at various temperatures, the choice of refrigerant is crucial in determining the optimal operating pressures required for effective system performance. This ensures appropriate cooling capacity and energy efficiency within the refrigeration system.

While ambient temperature, the size of the compressor, and the efficiency of the condenser play roles in overall system performance, they do not dictate the discharge pressure as directly as the characteristics of the refrigerant itself.