Question

when a heat pump is operating in 35°f weather, the temperature of the refrigerant line immediately downstream of the compressor may be

below 50°f

70°f to 90°f

100°f to 120°f

120°f to 140°f

over 140°f

Explanation:

Step1: Recall heat - pump operation

Compression in a heat - pump raises refrigerant temperature.

Step2: Consider ambient temperature

In 35°F weather, compression results in high temp.

Step3: Identify typical range

Typically, downstream of compressor, temp is 120°F - 140°F.

Answer:

120°F to 140°F