What is the consequence of having non-condensable gases in the refrigeration system?

Having non-condensable gases in a refrigeration system significantly reduces heat transfer efficiency. Non-condensable gases, such as air or other contaminants, can accumulate in the condenser and interfere with the refrigeration cycle. They occupy space within the system that would otherwise be filled by refrigerant vapor, leading to a decrease in the overall capacity of the system to release heat. This interference prevents the refrigerant from condensing effectively, creating a situation where the compressor has to work harder to maintain the desired cooling effect. The result is lower heat transfer efficiency, as the refrigerant cannot efficiently absorb heat from the evaporator and release it through the condenser.

This issue highlights the importance of maintaining a clean and properly functioning refrigeration system, as the presence of non-condensable gases can lead to higher energy consumption and potentially impact the longevity and reliability of the equipment.