Paper Conference

Proceedings of eSim 2022: 12th Conference of IBPSA-Canada


Identifying the minimum CO₂ sensing infrastructure required to enable demand-controlled ventilation: A preliminary analysis

Brodie W. Hobson 1, H. Burak Gunay 1, Scott Shillinglaw 2
1 Department of Civil and Environmental Engineering, Carleton University, Ottawa, Canada
2 Construction Research Centre, National Research Council Canada, Ottawa, Canada

Abstract: Maintaining CO₂ sensors for demand-controlled ventilation (DCV) requires frequent and costly recalibration. Therefore, identifying the minimum CO₂ sensing infrastructure needed to enable DCV can lower costs while improving indoor air quality (IAQ). This study simulates the floor of a building under ten stochastic occupancy scenarios to help inform how sensor placement should be prioritized. It was found that smaller multi-occupant zones disproportionately experienced high CO₂ concentrations, while core zones and single-occupant offices with lower ventilation to seating capacity ratios also experienced elevated concentrations. This study highlights the benefits of pairing stochastic occupancy scenarios with building simulation to inform sensor deployment.
Keywords: occupancy-centric control, occupancy, ventilation, COVID-19, carbon dioxide