Demand controlled ventilation systems in office buildings.

This paper illustrates the principles of demand controlled ventilation systems (DCV) as applied to office buildings. Appropriate ventilation approaches and control strategies are demonstrated in this paper for small area control (ieboardrooms) and for office buildings as a whole. Findings are illustrated by the results of field experiments. Impacts on energy consumption, indoor air quality and occupant response are examined. General conclusions and recommendations applicable to similar building types are also presented. The principles presented are applicable only to spaces where the dominant pollutants are generated by the occupants. In many instances the potential energy savings resulting from active DCV systems willnot be large although the technique of monitoring and recording CO2 levels may lead to very significant benefits.