Contribution Estimation of Outdoor Nitrogen Diozide on Indoor Air Quality of House Using Indoor Mass Balance
Despite the wide distribution of sources, indoor nitrogen dioxide (NO2) concentration is an important factor for personal exposure. Exposure to NO2 might produce adverse health effects. 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. In the present paper, 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 with 30 houses. All NO2 concentrations were measured using passive samplers. To estimate the contribution of outdoor air NO2 on indoor air quality of houses, daily indoor and outdoor NO2 concentrations for 30 houses in Deagu, Korea, were measured for 21 consecutive days. Subsequently, mean contribution of outdoor NO2 sources on indoor air quality of houses were 67.4％, suggesting that both indoor and outdoor sources had contributions to indoor NO2 concentrations. This method might indicate that contribution of outdoor air on indoor air quality without ventilation rate and decay rate measurements could be estimated by multiple measurements.
Indoor air quality Contribution Nitrogen diozide Outdoor air
Eunkyung Kwon Jianfei Shuai Hyunsoo Lee Wonho Yang Moonhyun Kim
Department of Occupational Health,Catholic University of Daegu,Korea Department of Environmental Engineering,Daegu University,Korea
国际会议
The 6th International Symposium on Heating,Ventilating and Air Conditioning(第六届国际暖通空调学术会议)
南京
英文
1079-1085
2009-11-06（万方平台首次上网日期，不代表论文的发表时间）