What is the primary function of a receiver in a refrigerant system?

The primary function of a receiver in a refrigerant system is to store refrigerant. A receiver is typically utilized in systems that use a vapor-compression cycle. It serves as a reservoir for excess refrigerant, allowing the system to maintain a stable refrigerant charge and to prevent liquid refrigerant from entering the compressor. This storage capability is crucial, particularly during various operational conditions when the amount of refrigerant needed fluctuates.

By acting as a buffer, the receiver helps ensure that there is enough refrigerant to meet the demands of the evaporator while preventing backflow of liquid during low-load conditions. This function ultimately contributes to the efficiency and reliability of the refrigeration system.