In an air conditioning system, which component has the highest temperature drop?

In an air conditioning system, the component that experiences the highest temperature drop is the evaporator. The evaporator is the part of the system where the refrigerant absorbs heat from the inside air of a building, causing the refrigerant to evaporate and thus lowering the temperature of the air passed over the evaporator coils.

The process begins when the low-pressure liquid refrigerant enters the evaporator, where it absorbs heat from the interior space, turning into a vapor. This phase change from liquid to gas results in a significant temperature drop. The effectiveness of the evaporator is crucial because it directly impacts the cooling capacity of the air conditioning system.

While the condenser, compressor, and thermal expansion valve each play their roles within the system, their function does not produce the highest temperature drop. The condenser releases heat absorbed by the refrigerant to the outside air, while the compressor increases the pressure and temperature of the refrigerant to allow it to flow into the condenser. The thermal expansion valve regulates the flow of refrigerant into the evaporator but does not signify a drop in temperature by itself; rather, it facilitates the drop that occurs in the evaporator.

Therefore, the evaporator ultimately is responsible for the highest temperature drop within an air conditioning system