TY - JOUR
T1 - The effects of filters for an intelligent air pollutant control system considering natural ventilation and the occupants
AU - Kim, Jimin
AU - Kong, Minjin
AU - Hong, Taehoon
AU - Jeong, Kwangbok
AU - Lee, Minhyun
N1 - Funding Information:
This work was supported by a grant ( 18CTAP-C117226-03 ) from Technology Advancement Research Program (TARP) funded by Ministry of Land, Infrastructure and Transport of Korean government.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2019/3/20
Y1 - 2019/3/20
N2 - Experimental analysis was conducted on the indoor air pollutant concentration using natural ventilation and filters. The study targeted two office rooms each of which was occupied by four people, and with the same outdoor environments. A non-woven fabric filter (room A) and an electrostatic filter (room B) were installed on the window frame, and the indoor air pollutant concentration and indoor climate factors were monitored based on the number of occupants and the occupants’ activities. The results are as follows: (i) when the number of occupants in each room increased from 0.03–0.06 to 1.53–1.63, room A showed a 60% average PM10 concentration increase while room B showed an opposite result (10% average PM10 concentration decrease), meaning the electrostatic filter's lower resistance to flow contributed to better ventilation and also decreased the influence of the occupants on the indoor air pollutant concentration. A low correlation (0.323–0.350) between the CO2 concentration and the occupants in room B also proved these results; (ii) while the average PM10 concentration in room A was 9 μg/m3 higher than that in room B, the average PM2.5 concentration in room A was higher by only 0.2 μg/m3, which showing that much of the generated or resuspended indoor particulate matter was PM10; and (iii) due to the more frequent heat transfer from outdoors to indoors, room B consumed 23% more heating energy. The results of this study are expected to be used as bases for the establishment of an appropriate management strategy that considers the indoor air pollutant concentration caused by the number of occupants and occupants’ activities by combining natural ventilation and filters.
AB - Experimental analysis was conducted on the indoor air pollutant concentration using natural ventilation and filters. The study targeted two office rooms each of which was occupied by four people, and with the same outdoor environments. A non-woven fabric filter (room A) and an electrostatic filter (room B) were installed on the window frame, and the indoor air pollutant concentration and indoor climate factors were monitored based on the number of occupants and the occupants’ activities. The results are as follows: (i) when the number of occupants in each room increased from 0.03–0.06 to 1.53–1.63, room A showed a 60% average PM10 concentration increase while room B showed an opposite result (10% average PM10 concentration decrease), meaning the electrostatic filter's lower resistance to flow contributed to better ventilation and also decreased the influence of the occupants on the indoor air pollutant concentration. A low correlation (0.323–0.350) between the CO2 concentration and the occupants in room B also proved these results; (ii) while the average PM10 concentration in room A was 9 μg/m3 higher than that in room B, the average PM2.5 concentration in room A was higher by only 0.2 μg/m3, which showing that much of the generated or resuspended indoor particulate matter was PM10; and (iii) due to the more frequent heat transfer from outdoors to indoors, room B consumed 23% more heating energy. The results of this study are expected to be used as bases for the establishment of an appropriate management strategy that considers the indoor air pollutant concentration caused by the number of occupants and occupants’ activities by combining natural ventilation and filters.
KW - Filter
KW - Indoor environmental quality
KW - Number and activities of occupants
KW - PM
KW - Window ventilation
UR - http://www.scopus.com/inward/record.url?scp=85058015321&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2018.12.054
DO - 10.1016/j.scitotenv.2018.12.054
M3 - Journal article
C2 - 30550905
AN - SCOPUS:85058015321
SN - 0048-9697
VL - 657
SP - 410
EP - 419
JO - Science of the Total Environment
JF - Science of the Total Environment
ER -