Modeling and continuous monitoring of indoor air pollutants for identification of sources and sinks
- Chalmers Univ. of Technology, Goeteborg (Sweden). Dept. of Building Services Engineering
By comparing a calculated exhaust air concentration to a measured exhaust air concentration in a ventilated building, it is possible to determine whether the pollutant studied originates from the outdoor air or originates from a source indoors. This method was applied to measurements carried out in apartments, office buildings, and a school in order to cover different ventilation systems. Various gaseous pollutants were studied successfully in these buildings. The measurements of carbon monoxide (CO) show that the method is applicable also in situations when the air is not well mixed. The measurements of total volatile organic compounds (TVOCs) indicate that the sources are found both indoors and outdoors as regards the buildings in question. The investigations of nitrogen monoxide (NO), nitrogen dioxide (NO{sub 2}), and ozone (O{sub 3}) show that these pollutants originate from the outdoor air, where large variations in concentration could be seen. Sinks were observed indoors for NO, NO{sub 2}, and O{sub 3}.
- OSTI ID:
- 684508
- Journal Information:
- Environment International, Journal Name: Environment International Journal Issue: 5 Vol. 25; ISSN 0160-4120; ISSN ENVIDV
- Country of Publication:
- United States
- Language:
- English
Similar Records
Outdoor sources of indoor air pollution
Monitoring indoor pollutants in two small office buildings to support a modeling study