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Investigation of Indoor Air Quality in Residential Buildings by Measuring CO2 Concentration and a Questionnaire Survey

Authors :
Shunichi Hattori
Toshiya Iwamatsu
Teruhisa Miura
Fujio Tsutsumi
Nobuyuki Tanaka
Source :
Sensors, Vol 22, Iss 19, p 7331 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

Indoor air quality (IAQ) in houses is often deteriorated by chemical substances emitted from heating, building materials, or other household goods. Since it is difficult for occupants to recognize air pollution, they rarely understand the actual conditions of the IAQ. An investigation into the actual condition of IAQ in houses was therefore conducted in this study. Carbon dioxide (CO2) concentrations in 24 occupied houses was measured, and the results from our analysis showed that the use of combustion heaters increased the concentration of CO2 and led to indoor air pollution. Results indicate that as outdoor temperature decreased, the frequency of ventilation decreased simultaneously, and CO2 concentration increased. Results of the questionnaire survey revealed that the actual IAQ in each house did not match the level of awareness its occupants had regarding ventilation. Along with this difficulty in perceiving air pollution, the lack of knowledge about ventilation systems and the effects of combustion heating may be additional barriers to IAQ awareness.

Details

Language :
English
ISSN :
14248220
Volume :
22
Issue :
19
Database :
Directory of Open Access Journals
Journal :
Sensors
Publication Type :
Academic Journal
Accession number :
edsdoj.181093b5501a4d07929b07272814d7c6
Document Type :
article
Full Text :
https://doi.org/10.3390/s22197331