What component is attached to the filter drier in a refrigeration system?

• A. Low-side process stub
• B. High-side process stub
• C. Evaporator coil
• D. Condenser coil

Answer: (B)

The component attached to the filter drier in a refrigeration system is the high-side process stub. Understanding the role of the filter drier is critical in refrigeration systems. The filter drier is designed to remove moisture and contaminants from the refrigerant, which is essential to prevent corrosion and ensure efficient operation.

In most systems, the high-side process stub is connected to the refrigerant line coming from the condenser. This is where the refrigerant, now in a high-pressure, high-temperature gaseous state, is ready to pass into the filter drier after being condensed into a liquid phase. It is important for the filter drier to be positioned on the high side of the system to effectively filter out impurities before the refrigerant enters the expansion device or evaporator.

This placement is significant because it helps maintain system efficiency and protects the expansion valve and evaporator from potential damage due to contaminants or moisture. The other components mentioned, such as the low-side process stub, evaporator coil, and condenser coil, do not serve the same function in relation to the filter drier within the refrigeration loop.