Question

question 32
how much air should move past a three - ton heat pump indoor coil every minute?
o 450 cubic feet
o 900 cubic feet
o 1350 cubic feet
o 1800 cubic feet
o 2250 cubic feet

Explanation:

Step1: Recall heat - pump air - flow rule

For a heat - pump, a common rule of thumb is 450 cubic feet per minute (CFM) per ton of cooling capacity.

Step2: Calculate air - flow for 3 - ton heat - pump

We have a 3 - ton heat - pump. So, the air - flow rate $Q=450\times3 = 1350$ CFM.

Answer:

1350 cubic feet