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KMID : 0895420050150030160
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Journal of Korean Society of Occupational and Enviromental Hygiene
2005 Volume.15 No. 3 p.160 ~ p.165
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Evaluation of Indoor Air Quality Improvement by Formaldehyde Emission Rate in School Indoor Environment Using Mass Balance
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Yang Won-Ho
Son Bu-Soon
Kim Dae-Won
Kim Young-Hee
Byeon Jae-Cheol
Jung Soon-Won
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Abstract
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Schools have significant and serious indoor environmental health problem, of which indoor air quality (IAQ) in school building may affect the health of the students and indirectly affect learning performance. Schools are of special concern when regarding indoor exposure to air pollutants, because students are particularly sensitive to pollutants and spend a significant amount of time in that environment. Therefore researches for improvement of indoor air quality have been developed such as installation of air cleaning device, ventilation system, titanium dioxide(X02) coating and so on. However, it is cult to evaluate the magnitude of improvement of indoor air quality in field study because indoor air quality can be affected by source generation, outdoor air level, ventilation, decay by reaction, temperature, humidity, mixing condition and so on. In this study, evaluation of reduction of formaldehyde emission rate in school indoor environments by far-Infixed ray coating material was carried out using mass balance model in indoor environment. we proposed the evaluation method of magnitude of improvement in indoor air quality, considering outdoor level and ventilation. Since simple indoor concentration measuements could not properly evaluate the indoor air quality, outdoor level and ventilation should be considered when evaluate the indoor air quality.
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KEYWORD
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school, indoor air quality, evaluation, formaldehyde(HCHO), ventilation
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