What is the function of a suction accumulator in a refrigeration system?

The function of a suction accumulator in a refrigeration system is to trap liquid refrigerant, preventing it from flooding back into the compressor. When refrigerant circulates through the system, some liquid can be carried along with the vapor due to improper handling or operational conditions. If liquid refrigerant enters the compressor, it can cause damage, as compressors are designed to handle vapor rather than liquid.

The suction accumulator acts as a safeguard by providing a space where excess liquid refrigerant can collect. This ensures that only vapor reaches the compressor, maintaining its proper function and preventing potential damage. The design of the accumulator allows it to separate the liquid from the vapor, storing the liquid until conditions are suitable for it to return to the evaporator, where it can absorb heat again and continue the refrigeration cycle effectively.

Other options, such as increasing pressure or absorbing excess refrigerant, do not accurately describe the role of a suction accumulator, as its primary concern is to manage liquid refrigerant and protect the compressor.