TY - JOUR
T1 - Temporal and spatial variations in IAQ and its association with building characteristics and human activities in tropical and subtropical areas
AU - Jung, Chien Cheng
AU - Hsu, Nai Yun
AU - Su, Huey Jen
N1 - Funding Information:
The authors thank the Ministry of Science and Technology for financially supporting this research through a grant ( NSC 101-2221-E-006-158-MY3 ).
Funding Information:
The authors thank the Ministry of Science and Technology for financially supporting this research through a grant (NSC 101-2221-E-006-158-MY3).
Publisher Copyright:
© 2019
PY - 2019/10
Y1 - 2019/10
N2 - A repeated measurement was conducted for the purpose of examining the seasonal and spatial variations in indoor air quality (IAQ) in tropical and subtropical areas as well as comparing the differences between different climate areas. Indoor and outdoor temperature, relative humidity (RH), formaldehyde (HCHO), CO2, bacteria, and fungi were measured in tropical and subtropical areas for four seasons from 2012 to 2015 for eight households. Questionnaires were conducted during each visit for the purpose of determining the factors influencing the IAQ. Considerable seasonal and spatial differences were observed in indoor HCHO and CO2 concentrations. The results of the study indicated that although the trends of indoor and outdoor CO2, HCHO, bacteria, and fungi concentrations and ratios were similar in the different climate areas, the levels were higher in tropical and subtropical areas than in other climate areas. In the tropical and subtropical areas, the levels of indoor and outdoor temperatures and RH were similar, and the values were higher indoors than outdoors in cold or temperate areas. In addition, a regression model indicated that residential building and human activities affect the levels of indoor environmental pollutants in tropical and subtropical areas. In summary, variations in indoor air pollutant level differed in different climate areas. Therefore, it is necessary to study the management of residential characteristics and human activities to improve the IAQ in tropical and subtropical areas.
AB - A repeated measurement was conducted for the purpose of examining the seasonal and spatial variations in indoor air quality (IAQ) in tropical and subtropical areas as well as comparing the differences between different climate areas. Indoor and outdoor temperature, relative humidity (RH), formaldehyde (HCHO), CO2, bacteria, and fungi were measured in tropical and subtropical areas for four seasons from 2012 to 2015 for eight households. Questionnaires were conducted during each visit for the purpose of determining the factors influencing the IAQ. Considerable seasonal and spatial differences were observed in indoor HCHO and CO2 concentrations. The results of the study indicated that although the trends of indoor and outdoor CO2, HCHO, bacteria, and fungi concentrations and ratios were similar in the different climate areas, the levels were higher in tropical and subtropical areas than in other climate areas. In the tropical and subtropical areas, the levels of indoor and outdoor temperatures and RH were similar, and the values were higher indoors than outdoors in cold or temperate areas. In addition, a regression model indicated that residential building and human activities affect the levels of indoor environmental pollutants in tropical and subtropical areas. In summary, variations in indoor air pollutant level differed in different climate areas. Therefore, it is necessary to study the management of residential characteristics and human activities to improve the IAQ in tropical and subtropical areas.
UR - http://www.scopus.com/inward/record.url?scp=85073700632&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85073700632&partnerID=8YFLogxK
U2 - 10.1016/j.buildenv.2019.106249
DO - 10.1016/j.buildenv.2019.106249
M3 - Article
AN - SCOPUS:85073700632
SN - 0360-1323
VL - 163
JO - Building and Environment
JF - Building and Environment
M1 - 106249
ER -