What does an accumulator do in a refrigeration system?

An accumulator plays a vital role in a refrigeration system by trapping liquid refrigerant. Its primary function is to ensure that liquid refrigerant does not enter the compressor. In a refrigeration circuit, refrigerant can exist in both gaseous and liquid states. If liquid refrigerant were to reach the compressor, it could cause serious damage, a phenomenon known as liquid slugging.

The accumulator collects any excess liquid refrigerant from the evaporator, allowing only vapor to move towards the compressor. By managing the flow of refrigerant, the accumulator helps maintain system efficiency and protects the compressor from potential harm. This design is essential for optimizing the performance of the refrigeration system.

The other options refer to functions that do not align with the specific purpose of the accumulator in this context.