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Outdoor Air Contaminants and Indoor Air Quality under Transient Conditions
Author(s) -
Ekberg Lars E.
Publication year - 1994
Publication title -
indoor air
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.387
H-Index - 99
eISSN - 1600-0668
pISSN - 0905-6947
DOI - 10.1111/j.1600-0668.1994.t01-1-00007.x
Subject(s) - air change , environmental science , indoor air quality , ventilation (architecture) , contamination , environmental engineering , indoor air , transient (computer programming) , air quality index , lag , atmospheric sciences , meteorology , ecology , computer network , physics , computer science , biology , operating system , geology
The indoor concentrations of contaminants originating from outdoor sources have been measured and calculated under transient conditions. The results show that contaminants that are supplied to an office building via the ventilation system can reach considerably high concentration levels. The indoor/outdoor concentration ratio and time lag are dependent on the air change rate. In buildings with low air change rates the indoor concentration variations are smoothed out compared to buildings with high air change rates. The results from the theoretical model are compared to the results from both laboratory and field measurements and the model is verified for well mixed conditions in a 20 m 3 test chamber. The model can be used to simulate different control strategies for reduction of indoor contaminant concentrations related to outdoor sources. One such control strategy is based on reduction of the outdoor air change rate during periods with peak outdoor contaminant concentrations.