| Title |
Development of Supply Ventilation Strategy to Reduce PM2.5 in School Classrooms |
| Authors |
최하늘(Choi, Haneul) ; 이주원(Lee, Joowon) ; 가서사(Jia, Ruisi) ; 김동현(Kim, Donghyun) ; 나후승(Na, Hooseung) ; 김태연(Kim, Taeyeon) |
| DOI |
https://doi.org/10.5659/JAIK.2020.36.9.119 |
| Keywords |
School; Particulate Matter; Infiltration; Ventilation system; Pressurization; Supply ventilation; CONTAM |
| 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. |