What is the primary function of a compressor in a refrigeration system?

The primary function of a compressor in a refrigeration system is indeed to compress refrigerant gas and increase its pressure and temperature. This process is essential because it allows the refrigerant to circulate through the system effectively.

When the refrigerant enters the compressor as a low-pressure gas, the compressor compresses it, which raises both its pressure and temperature. This change is crucial for the refrigeration cycle, as it prepares the refrigerant for the next step, which is the condensation process. In the condenser, the high-pressure, high-temperature gas dissipates heat to the surroundings, and the refrigerant transforms into a liquid state.

This cycle continues as the liquid refrigerant moves to the evaporator, where it absorbs heat from the environment, creating a cooling effect. Without the compressor performing its vital role of elevating the refrigerant's pressure and temperature, the refrigeration cycle would be disrupted, and the system would not be able to maintain the desired cooling effect.

The other options relate to different processes within the refrigeration system but do not define the compressor's primary function. For instance, absorbing heat from the environment pertains more to the evaporator, while releasing heat is related to the condenser. Controlling refrigerant flow into the evaporator involves components like expansion valves