Calculate the rate of infiltration heat loss of a room with a 380 ft² floor area and 10 ft high ceilings. Use an inside temperature of 72°F, an outside ambient temperature of -5°F. Assume the heat capacity of air is 0.018 Btu/ ft³°F. Base the analysis on the following hourly air exchange rates:
a. Tight, energy efficient construction (ACH = 0.5)
b. Medium construction (ACH = 1.0)
c. Loose construction (ACH = 1.5)