Midway house-tightening project: A study of indoor air quality
Abstract
Effects leakage areas and average concentrations of nitrogen dioxide, formaldehyde, and radon, were measured in 12 houses before and after special house-tightening retrofits. The average reduction in leakage area resulting from these retrofits was 32%. None of the pollutants measured before or after the retrofits reached levels exceeding existing guidelines. The moderate increases in radon and formaldehyde concentrations observed are consistent with what could be expected from the estimation average decrease in air-exchange rates. Because the pre- and post-retrofit measurement involved only single, relatively short-term samples taken two months aparts, uncertainties associated with the variability of source strength and occupant activities affecting ventilation remain and preclude any definitive conclusions.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- May 1981
- Bibcode:
- 1981STIN...8212277O
- Keywords:
-
- Air Quality;
- Formaldehyde;
- Nitrogen Dioxide;
- Radon;
- Shelters;
- Ventilation;
- Gas Flow;
- Retrofitting;
- Standards;
- Thermal Insulation;
- Engineering (General)