HEATING LOAD ESTIMATION

An estimate of the heating load is made on the basis of maximum probable heat loss of the conditioned heated space. The heating loads are:

1. Transmission heat loss: The transmission heat loss from walls roofs, etc., is given by, where t_i, t_o = inside and outside design temperature respectively
2. Solar radiation: The solar radiation heat gain is neglected as peak heating load occurs in the early hours of morning.
3. Internal heat gains: The internal heat gains from occupants, lights, appliances, etc., decrease the heating load. These negative loads should be accounted for in applications, such as theatres, assembly halls, stores, office buildings, etc.,