What is the purpose of a liquid line filter dryer in a refrigeration system?

The purpose of a liquid line filter dryer in a refrigeration system is to remove contaminants. This component plays a critical role in ensuring the longevity and efficiency of the refrigeration system by filtering out moisture, dirt, and debris from the refrigerant before it enters the evaporator coil.

Moisture in the refrigeration system can lead to the formation of ice or acid, which can damage the compressor and other system components. The filter dryer not only captures these impurities but also contains desiccants, materials that absorb moisture, further protecting the system. By keeping the refrigerant clean and free of moisture, the filter dryer helps maintain optimal functioning, prevents breakdowns, and increases the overall reliability of the refrigeration system.

The other options do not accurately describe the function of a liquid line filter dryer. For instance, while increasing pressure, storing liquid refrigerant, and maintaining temperature are important aspects of a refrigeration system, they are handled by different components, such as compressors and expansion valves, rather than the filter dryer.