A onestory building with dimensions 100 ft times 100 ft time

A one-story building with dimensions 100 ft times 100 ft times 13 ft (30.48 m times 30.48 m times 3.96 m) has an infiltration rate of 0.2 air change per hour during unoccupied periods. During the day, it is occupied by 80 people, each requiring 20 ft^3/min (10 L/s) of outdoor air. Find the contribution of the air change to the total heat loss coefficient during unoccupied and occupied periods. Assume that during occupied periods there is only controlled ventilation, no infiltration.

Solution

The answer of following question is as follows.

The total heat loss is 89 kw.

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