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Demand Controlled Ventilation: Use in Calgary and Impact of Sensor Location

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Advisor
Love, James, A.
Author
Lachapelle, Annie-Claude
Accessioned
2012-09-07T00:30:33Z
Available
2012-11-13T08:01:33Z
Issued
2012-09-06
Submitted
2012
Other
Demand Controlled Ventilation
CO2 sensor
DOE2
Indoor Air Quality
Multiple zones
Subject
Energy
Type
Thesis
Metadata
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Abstract
Demand controlled ventilation (DCV) is used to reduce the amount of energy required to condition outdoor air introduced into a building based by monitoring occupancy. This thesis reports the hours DCV is used in an existing building in Calgary. Results showed DCV was used approximately 20% of annual fan operating hours when paired with an air-side economizer and just over 60% when a heat recovery wheel was part of the system. A Simulink model was built to compare the performance of two currently used DCV approaches based on carbon dioxide readings (CO2-DCV). The model showed positioning a sensor in the supply air duct (SACO2-DCV) to serve multiple zones of a re-circulating system maintained lower CO2 levels when occupancy varied between rooms than if the sensor were in the return-air duct (RACO2-DCV). The model showed these lower CO2 levels were due to SACO2-DCV over-ventilating spaces relative to typical requirements.
Corporate
University of Calgary
Faculty
Graduate Studies
Doi
http://dx.doi.org/10.5072/PRISM/25548
Uri
http://hdl.handle.net/11023/181
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