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EVALUATION OF EMISSIONS FROM MASONRY HEATERS AND MASONRY FIREPLACES IN HOMES
Citation:
Barnett, S., R. McCrillis, AND R. Crooks. EVALUATION OF EMISSIONS FROM MASONRY HEATERS AND MASONRY FIREPLACES IN HOMES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-93/059 (NTIS PB93173078), 1992.
Description:
The paper reports results of the first in-home evaluation of emissions from masonry fireplaces and heaters. Five conventional masonry fireplaces and two advanced-technology Rosin masonry fireplaces were monitored for particulate matter (PM) and carbon monoxide (CO), using the automated woodstove emissions sampler (AWES) sampling system for l-week periods in the Portland, Oregon, area. Two potentially clean-burning masonry heaters, a Grundofen and a Contraflow, were also evaluated. Emissions from the conventional fireplaces averaged 24.9 g/kg PM and 107 g/kg CO, higher than earlier (mostly laboratory) results and over twice as high as EPA's AP-42 value. Emissions appear to be sensitive to fuel moisture. The Rosin fireplaces averaged 10. 4 g/kg PM and 52. 5 g/kg CO for a reduction of 58% for PM and 51% for CO. Emissions from the underfire-air Contraflow heater were 5. 6 g/kg PM and 41.0 g/kg CO. Emissions of 1.4 g/kg PM and 83 g/kg CO from the overfire-air Grundofen heater demonstrate the clean-burning potential of this type of technology. The concept of average daily gram-per-hour emissions is proposed as a more equitable substitute for grams per hour when used for intermittent short-burning devices such as fireplaces and masonry heaters.
