After leaving the condenser, the refrigerant enters which component next and in what state?

• A. High pressure liquid entering the metering device
• B. High pressure vapor entering the evaporator
• C. Low pressure liquid entering the condenser
• D. Low pressure vapor entering the evaporator

Answer: (A)

The key idea is the sequence and states of the refrigerant in a vapor-compression cycle: after the condenser, the refrigerant must be at high pressure as a liquid to be throttled through the metering device, which then drops its pressure so it can enter the evaporator and vaporize there. Therefore, the refrigerant leaving the condenser is a high-pressure liquid entering the metering device.

The other options don’t fit the flow or state: the evaporator receives low-pressure liquid (and often a two-phase mixture) after the metering device, not high-pressure vapor entering the evaporator, and the condenser does not receive low-pressure vapor or liquid from elsewhere in this stage.