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ISSN : 1738-4125(Print)
ISSN : 2287-7509(Online)
Journal of Odor and Indoor Environment Vol.8 No.4 pp.309-320
DOI :

상관분석에 의한 지하역사의 오염발생 특성

장경진,신철용1),이준용1),한화택2)*
국민대학교 열환경실험실, 1)국민대학교 대학원, 2)국민대학교 기계시스템공학부

Characteristics of Contaminant Sources in Subway Station by Correlation Analysis

Hwataik Han2), Kyung-Jin Jang,Cheolyong Shin1),Junyong Lee1)
2)Department of Mechanical Engineering, Kookmin University, Seoul 136-702, Korea
Thermal Environment Engineering Laboratory, Kookmin University, Seoul 136-702, Korea
1)Graduate School of Mechanical Engineering, Kookmin University, Seoul 136-702, Korea

Abstract

Most of the subway stations are located underground and the indoor air quality can be very poor. IAQtele-monitoring systems (TMS) have been installed at some of subway stations in Seoul to monitor indoorcontaminants, such as carbon dioxide, particulate matters and nitrogen oxides. In this paper, we use CO2,PM10, NO2 concentration data collected by TMS in one of the underground stations in Line 4. The correlationsare analyzed between the concentrations measured at different locations, such as tunnel, waitingroom, and platform to identify the source characteristics.The results indicate there are very weak correlations between CO2-NO2 and PM10-NO2 but strong correlationbetween CO2-PM10, because both of PM10 and CO2 are related to the number of passengers. Thecomparison of PM10 concentrations before and after the installation of platform screen door (PSD) indicatesthat considerable amount of particulate matters are entrained from tunnel into platform area. ThePSD exhibits positive effects on indoor air quality especially on particulate concentrations. In case of NO2,there is a strong correlation between indoor and outdoor concentrations. The results presented in this papercan be used to control indoor air quality in subway stations more effectively.

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