Question

which is the best location for an outdoor coil on a heat pump?
under the drip edge of the roof
exposed to prevailing winds
on the east side of the house
under a deck
with its base one inch below grade level to avoid snow blowing under the unit

question 19
when a heat pump is operating in 35°f weather, the temperature of the liquid refrigerant line upstream of the expansion device may be
below 30°f
30°f to 50°f
78°f to 90°f
105° to 115°f
over 120°f

Explanation:

For the first question, exposing the outdoor coil to prevailing winds helps in efficient heat - transfer as it allows for better air - flow over the coil. For the second question, when a heat pump operates in 35°F weather, the liquid refrigerant upstream of the expansion device is typically in the range of 78°F to 90°F due to the compression and heat - transfer processes in the heat - pump cycle.

Answer:

1. exposed to prevailing winds
2. 78°F to 90°F