NORBERT SENF
ABSTRACT
Woodsmoke emissions are an increasing health concern in populated areas with certain geographical features. Site-built open fireplaces now face severe restrictions in a number ofjurisdictions. The author and colleague 1. Frisch have conducted emissions and performance tests on several masonry appliances over a period of three years. A new result is that a masonry fireplace retrofitted with an airtight door was able to operate with particulate emissions that were considerably lower than previous published results, and an order of magnitude lower than reported results for open fireplaces. A second type of fireplace known as a masonry heater, characterized by a high bum rate and and the ability to store energy in a masonry thermal mass, was able to operate with emissions that were an order of magnitude lower than current requirements for woodstoves certified to the new Canadian Standards Association (CSA) emissions limits.
F-38
