Energy efficient ventilation strategies.

Ventilation is the process by which clean air is provided to a space. It is essential for the provision of fresh air to occupants and for the dilution and removal of pollutants. It is therefore at the focal point of building environmental design. In many climatic regions, ventilation air must be conditioned by heating or cooling. Such treatment frequently incurs a heavy energy penalty. In addition, ventilation systems can be complex and involve space, installation costs, maintenance and operating energy. It is these factors that motivate much ventilation research. The ultimate goal is to develop energy efficient, cost effective ventilation technology. The purpose of this paper is to review progress in domestic ventilation and to illustrate a need for an integrated approach to design.