Seven of the homes were found to have a significant increase of CO during combustion periods as compared with background levels; one home routinely had levels of 30-50 ppm for prolonged exposures. These results may indicate that consumers using unvented kerosene heaters are being unknowingly ...
The water heaters of the prior art have typically relied upon the natural draft of the hot flue gases, rising through the flue pipe(s) of a water heater and being vented into a chimney. Because these gases were warmer than the surrounding air, they tended to naturally rise. However, with...
Gas heatersNitrogen dioxideCarbon monoxideMonitorsVentilationThe report describes a preliminary research plan for an indoor air quality monitoring study of homes with unvented gas space heaters (UVGSHs). The objectives of the field monitoring study are to determine the concentration ranges of carbon ...
Gas heatersBetween October 1984 and December 1987, a series of experiments with unvented gas space heaters (UVGSHs) was conducted in an unoccupied research house. Each experiment involved operation of a single UVGSH according to protocols specifying type and location of UVGSH, length of operation...
Unvented heaters were used in the approximately 20 % of gas homes. Average NO 2 concentration in the living room for homes with gas with vented and unvented heaters was 22 ppb and 72 ppb, respectively. In the fall, the mean NO 2 concentrations in the living room for homes supplied by ...
Yan PB; Hemphill CP; Billick IH;.Estimation of nitrogen dioxide concentrations in homes equipped with unvented gas space heaters.Environment International.1989.551-556Estimation of nitrogen dioxide concentrations in homes equipped with unvented gas space heaters. Yan PB,Hemphill CP,Billick IH,et al....
A group of 121 children below the age of 13 (59 with unvented kerosene space heaters in the home; 62 without) were enrolled in the study and nitrogen dioxide levels were measured in 93% of the subjects' homes for one two-week period. When socioeconomic status and history of respiratory ...
Space heatersGas heatersNitrogen dioxideCarbon monoxideMonitorsVentilationQuestionnairesThe report describes the protocol used for an indoor air quality monitoring study of homes with unvented gas space heaters (UVGSHs). The objectives of the field monitoring study are to determine the concentration ranges...
Space heatersGas heatersNitrogen dioxideConcentration(Composition)Carbon monoxideMonitorsVentilationAir qualityDuring the period from January to March 1985, 157 residences in four Texas cities were monitored for pollutant concentrations and use of unvented gas space heaters (UVGSHs) and gas ranges. ...
EPA. 1990c. Characterizations of population and usage of unvented kerosene space heaters. Contract no. 68-02-4284. Washington, DC: U.S. Environmental Protection Agency. EPA report no. EPA/600/7- 90/004.Barnes, J., P. Holland and P. Mihlmester (1990) Characteriza- tion of population ...