Natural ventilation

Buildings should be designed with controllable natural ventilation. A very high range of natural ventilation rates is necessary so that the heat trans fer rate between inside and outside can be selected to suit conditions. Ven tilation rates are selected to control temperature, pollution, and air move ment. Ventilation with heat reclaim and the thermal capacity of the buildin g have to be considered. Buildings need to be designed with natural ventila tion in mind to minimise the use of fossil fuel energy. (C) 1999 Elsevier S cience Ltd. All rights reserved.