State-of-the-art review of CO2 demand controlled ventilation technology and application

The control of outdoor air intake rates in mechanically ventilated buildings based on indoor carbon dioxide (CO 2 ) levels, often referred to as CO 2 demand controlled ventilation (DCV), has the potential for reducing the energy consumption associated with building ventilation in some commercial and institutional buildings.Carbon dioxide DCV has been discussed, promoted, studied and demonstrated for about twenty years, but questions still remain regarding the actual energy savings potential as a function of climate, ventilation system features, and building occupancy.In addition, questions exist as to the indoor air quality (IAQ) impacts of the approach and the best way to implement CO 2 DCV in general and in a given building.This report presents a state-of-the-art review of CO 2 DCV technology and application including discussion of the concept and its application, and a literature review.In addition the regulatory and standard requirements impacting CO 2 DCV are also examined.