Literature review on CO{sub 2}-based demand-controlled ventilation

Conference · Wed Dec 31 04:00:00 EST 1997

OSTI ID:349959

Emmerich, S J; Persily, A K ^[1]

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1. National Inst. of Standards and Technology, Gaithersburg, MD (United States). Building and Fire Research Lab.

Many ventilation requirements and recommendations are in the form of outdoor airflow rates per person. Ventilation systems are therefore designed to provide a minimum level of outdoor air based on the designed occupancy level multiplied by the per-person ventilation requirement. Because the indoor generation rate of carbon dioxide is dependent on the number of occupants, it has been proposed to use indoor carbon dioxide concentrations as a means of controlling outdoor air intake based on the actual number of occupants in the space as opposed to the design occupancy. Such demand-controlled ventilation offers the possibility of reducing the energy penalty of overventilation during periods of low occupancy while still ensuring adequate levels of outdoor air ventilation. This paper reviews previous work on carbon-dioxide-based demand-controlled ventilation, including field demonstration projects, computer simulation studies, studies of sensor performance and location, and discussions of the application of the approach. The work is summarized and a number of research needs are identified.

• OSTI ID: 349959
• Report Number(s): CONF-970668--
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CARBON DIOXIDE
COMPUTERIZED SIMULATION
CONTROL THEORY
ENERGY CONSERVATION
VENTILATION SYSTEMS