Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Estimation of Ventilation and Generation Rates Using Nitrogen Dioxide Measurements of Indoor and Outdoor in Houses

주택 실내.외 이산화질소 측정을 이용한 환기량 및 발생량 추정

  • Yang, Won-Ho (Department of Occupational Health, Catholic University of Daegu) ;
  • Im, Sung-Guk (Department of Occupational Health, Catholic University of Daegu) ;
  • Son, Bu-Soon (Department of Environment Health Science, Soonchunhyang University)
  • 양원호 (대구가톨릭대학교 산업보건학과) ;
  • 임성국 (대구가톨릭대학교 산업보건학과) ;
  • 손부순 (순천향대학교 환경보건학과)
  • Published : 2008.10.30
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Abstract

Indoor air quality can be affected by indoor sources, ventilation, decay and outdoor levels. Although technologies exist to measure these factors, direct measurements are often difficult. The purpose of this study was to develop an alternative method to characterize indoor environmental factors by multiple indoor and outdoor measurements. Using a mass balance model and regression analysis, penetration factor (ventilation rate divided by the sum of ventilation rate and deposition constant) and source strength factor (source strength divided by the sum of ventilation rate and deposition constant) were calculated using multiple indoor and outdoor measurements. Subsequently, the ventilation rate and $NO_2$ generation rate were estimated. Mean of ventilation rate was 1.41 ACH in houses, assuming a residential N02 deposition constant of 0.94 $hr^{-1}$. Mean generation rate of $NO_2$ was 16.5 ppbv/hr. According to house characterization, inside smoking and family number were higher $NO_2$ generation rates, and apartment was higher than single-family house. In conclusion, indoor environmental factors were effectively characterized by this method using multiple indoor and outdoor measurements.

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References

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