Ventilation Heat Loss in Factories and Warehouses (Paperback)

This report describes 12 single-cell factory and warehouse units of various construction types that have been tested and the ventilation rate predicted for all using a BSRIA air filtration model. The air filtration rates have been calculated for mean wind speeds at three wind directions and for a temperature difference of 10 degrees centigrade. The air filtration rates have been further processed to provide the ventilation heat loss of each unit based on a normal five-day working week and the results compared with the CIBSE guidance data. The results have also been compared with what is considered to be readily achievable reductions in the ventilation of these buildings by careful attention to sealing the structures where air leakage paths are reasonably identifiable. The main conclusion drawn from the results is that the CIBSE ventilation allowances are lower than are being realised in practice and that there is considerable scope for energy conservation by better sealing of these types of structures.