Where should a liquid line filtered drier be placed in a refrigeration system?

Placing a liquid line filtered drier between the condenser and the metering device is essential for a couple of key reasons. First, this location allows the drier to filter out any moisture or contaminants that may have entered the refrigerant system after the refrigerant has been condensed but before it reaches the metering device. This is crucial because moisture in the system can lead to ice formation in the expansion device or other components, potentially causing blockages and malfunctions.

Moreover, by positioning the drier in this location, it can effectively remove debris and particles that might have accumulated during operation or maintenance. The metering device is responsible for controlling the amount of refrigerant flowing into the evaporator, and ensuring that the refrigerant is clean and free of entrained moisture is vital for the proper function of the entire refrigeration cycle. Maintaining a clean refrigerant flow helps improve efficiency and prolongs the life of the system’s components.

In contrast, placing the filtered drier between the evaporator and the compressor would not protect the compressor from contaminants it might encounter after the efficient cooling process. Other positions, such as between the compressor and expansion valve or between the accumulator and the evaporator, are also not optimal as they do not serve the primary purpose of preventing