Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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An Experiment of NOx Reduction according to the Area change of TiO2 Coating in Ventilation Ducts

환기덕트에서 광촉매코팅 면적변화에 따른 NOx 농도저감 실험

  • 정용기 (중앙대학교 건축공학과) ;
  • 송용우 (중앙대학교 건축공학과) ;
  • 김성은 (중앙대학교 건축공학과) ;
  • 유재윤 (중앙대학교 건축공학과) ;
  • 박진철 (중앙대학교 건축공학과)
  • Received : 2021.06.14
  • Accepted : 2021.07.21
  • Published : 2021.08.30
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Abstract

The purpose of this study was to study how to reduce the primary pollutants of NOx in a manner to keep a comfortable air quality. By installing a photocatalytic reactor in a duct device, the reduction of NOx according to the reaction area change using the photocatalytic reaction was confirmed through an experiment. The experiment was conducted according to the ISO 22197-1 test method, and the coating area was changed to 100%, 75%, 50%, and 25%. As a result of the test according to the coating area change of the TiO2 photocatalyst, it was confirmed that as the coating area decreased, the NOx concentration increased after the reaction was completed, and the NOx reduction amount decreased. In addition, as the coating area decreased, the NOx reduction rate decreased, and the gradient of the reduction graph also decreased. After the reaction of the coating area 25%, the time to 72% reduction, which is the amount of NOx reduction, was compared. As the coating area decreases was confirmed that increases the reaching time to 72% reduction.

Keywords

Acknowledgement

이 연구는 본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음 (과제번호 21SCIP-B146254-04)

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