I-CUB: 'Indoor Climate-Users-Buildings': Relationship between measured and perceived indoor air quality in dwellings
Paper in proceeding, 2021

Assessment of indoor environmental quality has recently moved to a combined methodology of both measurements and questionnaire surveys. In this study, we have used data from the national survey of the Swedish housing stock, BETSI, conducted in 2007/2008, during the heating season. The study included, among others, measurement of selected indoor air pollutants and an extensive questionnaire survey on the occupants' perception of their dwellings. Measured concentrations of the air pollutants NO2, TVOCs and formaldehyde were aggregated into one Indoor Air Pollution Index (IAPI) on a continuous scale between 0 (excellent Indoor Air Quality; IAQ) and 10 (poor IAQ). The perceived IAQ was assessed by the occupants on a 5-point category scale from very good to very poor. On the entire scale of IAPIs, 92% of the respondents in single-family houses perceived the IAQ as very good or good and 8% as acceptable, while in the apartments, the ratings 'very good' and 'good' accounted for 58%, acceptable for 33% and 9 % for 'poor' and 'very poor', respectively. In both building types, the tendency of IAPIs was shifted to lower values (good IAQ). Analysis of IAPI-medians showed no statistically significant differences between and among the air quality perception ratings.

Author

Sarka Langer

Chalmers, Architecture and Civil Engineering, Building Services Engineering

IVL Swedish Environmental Research Institute

Theofanis Psomas

Chalmers, Architecture and Civil Engineering, Building Services Engineering

Despoina Teli

Chalmers, Architecture and Civil Engineering, Building Services Engineering

Journal of Physics: Conference Series

17426588 (ISSN) 17426596 (eISSN)

Vol. 2069 1 012245

8th International Building Physics Conference, IBPC 2021
Copenhagen, Virtual, Denmark,

Subject Categories

Environmental Analysis and Construction Information Technology

Building Technologies

DOI

10.1088/1742-6596/2069/1/012245

More information

Latest update

1/3/2022 7