An inline refrigerant handling system suitable for a centrifugal compressor using R123 is used primarily to recover refrigerant for reuse. This system is called:

• A. Desiccant dryer
• B. Refrigerant recovery
• C. Refrigerant recycling
• D. Diaphragm separator

Answer: (C)

Refrigerant recycling is the process of recovering refrigerant from a system, cleaning and conditioning it so it can be returned to service in the same system. In a centrifugal chiller using R123, an inline handling system used primarily to recover refrigerant for reuse is designed to remove contaminants and moisture and then reintroduce the conditioned refrigerant back into the system. This distinguishes it from simply recovering refrigerant for storage (recovery) or sending it off for off-site purification to virgin standards (reclaim). Devices like a desiccant dryer remove moisture, and a diaphragm separator helps separate oil or liquids, but the overall inline loop whose main purpose is to enable reuse of the refrigerant is refrigerant recycling.