The metering device changes high-pressure liquid to
A) a low-pressure vapor.
B) a low-pressure liquid.
C) a high-pressure liquid.
D) any of the above, depending on the outside air temperature.

Question

Quizplus · Accepted Answer

The metering device is designed to reduce the pressure of the high-pressure liquid refrigerant as it passes through, which results in a low-pressure liquid. This is necessary for the refrigerant to move into the evaporator where it absorbs heat and evaporates into a low-pressure vapor. Option A is incorrect because the metering device changes high-pressure liquid to a low-pressure liquid, not to a low-pressure vapor. Option C is incorrect because the metering device reduces the pressure of the refrigerant, not increases it. Option D is incorrect because the outside air temperature does not affect the operation of the metering device.

The Metering Device Changes High-Pressure Liquid to