Ventilation Heat Loss
In larger structures (e. g., commercial or industrial buildings), ventilation is necessary for both health and comfort. In houses, the
Amount of infiltrated air is generally sufficient to supply the ventilation requirements.
When ventilation is provided, the heating system warms the outside air used for this purpose (i. e., ventilation) to the inside design temperature. The heat required will be equivalent to the heat lost by ventilation and can be calculated with the following formula:
H = 0.018 X Q(ti — to) where
H = heat loss by ventilation.
Q = volume of ventilation air.
0. 018 = specific heat of air (0.240) times density of outdoor air (approximately 0.075).