| Contents Notes |
"The U.S. Environmental Protection Agency has decided to develop a New Source Performance Standard (NSPS) for wood burning stoves. During the development process several issues must be resolved. One of the more critical issues is the selection of an emission sampling method and stove operating procedure. This report addresses the comparison of three candidate sampling methods: the EPA Modified Method 5 (MM5), the Oregon Method 7 (OM7). and the ASTM proposed Method PI 80. It also addresses the effect emission format (g/hr, g/kg wood burned, microgram/J heat output) has on the intermethod correlations. Five stoves (i.e., two catalytic, one noncatalytic generic, one noncatalytic high efficiency, and one catalytic fireplace insert) were tested. The stoves were nominally operated according to the State of Oregon's certification procedure. Simultaneous tests were conducted using MM5 and OM7 in the stove flue and MMS, OM7. and ASTM in the (ASTM) dilution tunnel. Quality assurance tests using duplicate sampling trains were also conducted. Proportional sampling, using SO2 as a tracer gas, was conducted in the flue, and isokinetic sampling was conducted in the dilution tunnel. Results showed good correlations between the total train emissions obtained with each method. The strength of the correlations varied with the emission format; the grams per hour format showed the strongest correlation. POM emissions showed a general (but weak) correlation with total emissions when the grams per hour format was used; there were no correlations when the emissions were expressed in either of the other two formats." |
