How does the addition of a filter drier improve system performance?

The addition of a filter drier significantly enhances system performance primarily by filtering contaminants and absorbing moisture. In refrigeration and air conditioning systems, the filter drier serves a dual purpose. First, it captures particles such as dirt, debris, and metal shavings that could originate from wear within the system. These contaminants can obstruct valves, block capillary tubes, and compromise the efficiency of the system, potentially leading to mechanical failure.

Second, the filter drier absorbs moisture, which is crucial because excess moisture can lead to the formation of acids and sludge that damage refrigerants and system components. Water in a refrigeration system can also cause freeze-ups in the expansion device and reduce the effectiveness of the refrigerant. By removing both contaminants and moisture, the filter drier ensures that the refrigerant remains clean and dry, thus protecting the system and allowing it to operate efficiently, maintain appropriate pressures, and enhance overall reliability.

The inclusion of a filter drier does not inherently change the flow rate of the refrigerant, reduce compressor noise, or maintain temperature consistency directly; its primary roles revolve around cleaning and moisture control, which indirectly support all other functions of the cooling cycle.