Sammendrag
As a part of the IEA Bioenergy, Task X - Conversion, Combustion activ ity, an international round robin test of a wood stove supplied with a catalytic afterburner (JØTUL 3TDCI-2) has been performed to investi gate and compare the emission level of CO, particles/tar, hydrocarbon s and NOx. The participating countries were Austria, Canada, Denmark, Finland, the Netherlands, Norway, Sweden, U.K. and U.S.A. The wood s tove was tested according to national standards and test procedures. In addition, a comparison of the calculation procedures used to conve rt measured transient volumetric emission levels into average emissio n levels in g/kg dry fuel was performed, based on both arithmetic and weighted averaging. The results uncovered significant differences in ways of doing environmental evaluation. Particle emission measuremen ts were found to be the best method to evaluate the environmental acc eptability of the tested stove, since the particle emission level was least dependent of the national standards, test procedures and calcu lation procedures used. Finally, transient particle emission measurem ents are presented, which reveal a close relationship between particl e and hydrocarbon emissions.