Record Display for the EPA National Library Catalog


Main Title Impact of Heating and Air Conditioning System Operation and Leakage on Ventilation and Intercompartment Transport: Studies in Unoccupied and Occupied Tennessee Valley Homes.
Author Matthews, T. G. ; Wilson, D. L. ; Thompson, C. V. ; Monar, K. P. ; Dudney., C. S. ;
CORP Author Oak Ridge National Lab., TN. Health and Safety Research Div.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher c1990
Year Published 1990
Report Number EPA-IAG-40-1536-84; EPA/600/J-90/057;
Stock Number PB90-245325
Additional Subjects Ventilation ; Heating ; Air conditioning ; Residential buildings ; Leakage ; Air flow ; Air circulation ; Pollution control ; Fluid infiltration ; Mixing ; Reprints ; HVAC systems ; Indoor air pollution
Library Call Number Additional Info Location Last
NTIS  PB90-245325 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 7p
The paper gives results of a study (in both occupied and unoccupied houses in the Tennessee Valley) of the impact of heating and air-conditioning (HAC) system operation and leakage on ventilation and intercompartment transport. Forced-air HAC systems caused an average and maximum increase in air infiltration rates of 1.8- and 4.3-fold, respectively, during brief whole-house studies of tracer gas decay in 39 occupied houses. An average increase in air infiltration rate of 0.33+/-0.37/h corresponded to an incremental air leak of 240 cu m/h, based on approximate house volume. More detailed tracer gas decay studies were performed in basements, kitchens, and bedrooms of six houses with low infiltration rates. The HAC mixed the indoor air efficiently between measurement sites. HAC operation also caused 1.1- to 3.6-fold increases in air infiltration rates, corresponding to absolute increases of 0.02 to 0.1/h. In an unoccupied research house, 3-fold increases in average air infiltration rate with HAC operation were reduced to 2-fold by sealing the external HAC unit and crawlspace ductwork system.