Evaluation of Emissions from Masonry Heaters and Masonry Fireplaces in Homes

摘要

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 1-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 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.