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Investigation of Air Change Rate in a Single Room Using Multiple Carbon Dioxide Breathing Models in China: Verification by Field Measurement
- Source :
- Buildings, Vol 13, Iss 2, p 459 (2023)
- Publication Year :
- 2023
- Publisher :
- MDPI AG, 2023.
-
Abstract
- It is difficult to accurately measure the air exchange rate (AER) in residential and office buildings during occupation via on-site field measurement. The tracer gas method was widely applied to estimate the AER in these buildings, and human metabolic carbon dioxide (CO2) was often used as a tracer gas in different models. This study introduced three models (the ASHRAE model, the ASHRAE China-specific modified model, and the BMR model), which were proposed to estimate the AER based on exhaled CO2. We verified these models by comparing the exhaled CO2-based AER with AER from field measurements using sulfur hexafluoride (SF6) as a tracer gas. We also analyzed the potential factors that could affect the uniformity of the indoor tracer gas distribution. Our results indicate that the ASHRAE China-specific modified model has the best performance with an average deviation of −6.67% and a maximum deviation of −14.6% with multiple measurement points, a stable personnel activity, and proper Parameter settings in a single room in China.
Details
- Language :
- English
- ISSN :
- 20755309
- Volume :
- 13
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Buildings
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.1fd42e5c00854282a6a90ac78b9e340e
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/buildings13020459