Heating And Cooling Loads

Heating and cooling loads are the amounts of energy required to make up for heat loss and heat gain in the building (Fig. 18-2). The rate of flow of hot or cold air coming into the building from ventilation and infiltration influences the amount of heating or cooling load. It is also dependent upon the difference in temperature and humidity between the inside and outside air. The amount of outside air coming in is expressed in liters per second (cubic feet per minute, or cfm).

Solar radiation gains y. Radiation

/ Ventilation

/ Ventilation

Figure 18-2 Heat gains and losses in buildings.
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