| Download | - View final version: Air change rates and carbon dioxide concentrations in a high-rise office building (PDF, 1.3 MiB)
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| Author | Search for: Reardon, J. T.1; Search for: Shaw, C. Y.1; Search for: Vaculik, F. |
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| Affiliation | - National Research Council of Canada. NRC Institute for Research in Construction
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| Format | Text, Article |
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| Subject | ventilation; carbon dioxide; measurement; tracer gas; air distribution; co2-based demand control; Indoor air |
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| Abstract | The feasibility of controlling ventilation rates using occupant-generated carbon dioxide (C02) as the control index has been examined in a large high-rise office building with a constant-volume heating, ventilating, and air-conditioning (HVAC) system. Daily C02 concentration profiles throughout the building and air change rates, using sulfurhexafluoride (SF6) as a tracer gas, were measured for several outdoor air supply rates. Of particular interest was how well the C02 concentrations measured in the centralventilation system's return air plenum represented the average C02 concentration behavior in the building as a whole. C02 concentration profiles were also measured onindividual floorspaces in the building to determine the range of variability in the concentration behavior in occupied zones. The influence of fresh air supply rates on the speed of mixing of the tracer gas (surrogate contaminant) was also examined. The practicability of using C02 as an active tracer gas to measure air change rates was also investigated. The results are discussed in the paper. |
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| Publication date | 1994 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Identifier | IRC-P-3234 |
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| NRC number | NRCC 35987
NRC-IRC-4090 |
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| NPARC number | 20358442 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | f6f2cf7d-0a57-4a85-946f-cd6cfe3a28c9 |
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| Record created | 2012-07-20 |
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| Record modified | 2020-06-06 |
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