Design and Performance Evaluation of the KIST Indoor Smog Chamber

실내 스모그 챔버의 설계 및 성능평가

  • 배귀남 (한국과학기술연구원 대기자원연구센터) ;
  • 김민철 (한국과학기술연구원 대기자원연구센터) ;
  • 이승복 (한국과학기술연구원 대기자원연구센터) ;
  • 송기범 (한국과학기술연구원 대기자원연구센터) ;
  • 진현철 (한국과학기술연구원 대기자원연구센터) ;
  • 문길주 (한국과학기술연구원 대기자원연구센터)
  • Published : 2003.08.01

Abstract

A multi-functional indoor smog chamber was designed and evaluated to investigate photochemical or water vapor reaction mechanisms of air pollutants. Various smog chamber experiments could be conducted using ambient air or purified air in this smog chamber. The smog chamber consisted of a housing, a Teflon bag, blacklights, injection ports, sampling ports, and utility facilities. The characteristics of light source, the wall losses of air pollutants, and the quality of purified air were experimentally investigated. The maximum NO$_2$ photolysis rate was 1.10 min$^{-1}$ . In a 2.5-m$^3$ Teflon bag, the wall losses of ambient $O_3$, NO, and NO$_2$ were 1.2~2.4$\times$10$^{-3}$ min$^{-1}$ , 0.7~2.0$\times$10$^{-3}$ min$^{-1}$ , and 0.4~2.0$\times$10$^{-3}$ min$^{-1}$ , respectively. The wall loss of ambient particles ranging 0.05 to 0.2 ${\mu}{\textrm}{m}$ was 1.8~5.4$\times$10$^{-3}$ min$^{-1}$ , which was slightly higher than those of ambient gaseous species. The purified air supply system provided high quality of air with NO$_{x}$ < 1 ppb, and total hydrocarbons < 5 ppb.b.

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