The refrigerant path after leaving the purge unit leads to which component?

• A. Condenser
• B. Receiver
• C. Suction line
• D. Evaporator

Answer: (D)

In a vapor‑compression refrigerant loop, the purge unit is used to remove non-condensables and moisture and return the purged refrigerant to the low‑pressure side so it can rejoin the cycle. After leaving the purge unit, the refrigerant is directed toward the evaporator, where it expands and boils at low pressure, absorbing heat from the surroundings. The resulting vapor then travels back to the compressor via the suction line to continue the cycle. The evaporator is the correct point for the purge flow to re-enter because it’s the stage where low‑pressure refrigerant is meant to vaporize and feed the rest of the cycle.