Question

As outside ambient air temperature decreases, a heat pump's COP ________?

1) increases
2) decreases
3) remains constant
4) cannot be determined

Answer 1

The COP of a heat pump decreases as the outside temperature decreases.

Step-by-step explanation:

The Coefficient of Performance (COP) of a heat pump is a measure of its efficiency. As the outside ambient air temperature decreases, the COP of a heat pump decreases. This is because the heat pump needs to work harder to transfer heat from the colder outdoor environment to the warmer indoor environment.