Lowe R J
Bibliographic info:
UK, Building Serv Eng Res Technol, Vol 21, No 3, 2000, pp 179-185

An equation is developed for predicting the combined effect of naturally and mechanically induced air flows in buildings and solved by a combination of analytical and iterative methods. The resulting two-dimensional formulation, implemented as a simple computer program, allows rapid, hourly simulation of infiltration in domestic-scale buildings with a range of ventilation strategies. This implementation is used m compare energy use and carbon dioxide emissions for three ventilation strategies-natural ventilation, mechanical extract and balanced, whole-house mechanical ventilation as a function of dwelling airtightness. This exercise confirms the need for airtightness if the benefits from balanced mechanical ventilation with heat recovery are to be maximised.