Which cooling system typically involves the use of compressor and evaporator coils together?

The cooling system that typically involves the use of compressor and evaporator coils together is the direct expansion system. In this system, refrigerant is directly expanded in the evaporator coils, allowing the heat transfer process to occur efficiently. The compressor circulates the refrigerant through the system, compressing it and raising its pressure and temperature, which is then allowed to condense in the condenser coils. This continuous cycle between the evaporator (where the refrigerant absorbs heat) and the compressor is what defines the direct expansion system.

In contrast, chilled water systems utilize a series of chillers and distribution systems instead of evaporator coils to cool water, which then transfers heat to the air. Evaporative cooling systems rely on the natural evaporation of water to cool air, and multiple stage systems indicate a system with various stages of cooling but do not specifically refer to the combination of compressor and evaporator coils working together as in direct expansion systems.