Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Development of Supply Ventilation Strategy to Reduce PM2.5 in School Classrooms

학교 교실의 초미세먼지 저감을 위한 급기 환기 전략 개발

  • Received : 2020.06.17
  • Accepted : 2020.08.27
  • Published : 2020.09.30
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Abstract

The purpose of this study is to propose a novel method to pressurize a room using a ventilation system to block outdoor PM2.5 through infiltration. We made various cases according to the building airtightness performance, pressurization ratio, and filter level, and evaluated the performance of the proposed method using simulation. As the simulation method, CONTAM, mass balance equation, simple thermal load equation, and regression equation were used. As a result, first, using the proposed method, the indoor PM2.5 concentration could be reduced to a maximum of 30% even on a day when the outdoor PM2.5 concentration is high. Second, in the case of airtight buildings, it showed excellent performance even with less pressure. Third, improving the filter level of the ventilation system was a good way to further reduce indoor PM2.5. Finally, a moderate level of pressurization strategy was found to be thermally beneficial.

Keywords

Acknowledgement

이 연구는 2020년도 한국연구재단 연구비 지원에 의한 결과의 일부임. 과제번호:2019M3E7A1113090

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