Entwicklung schadstoffarmer Kleinfeuerungsanlagen fuer die Brennstoffe Holz und Braunkohle Abschlussbericht

Wood fired domestic heating systems only cover a small part of the energy required for effective room heating and heating of the household water. Largely responsible for the high level of unburnt hydrocarbons are ovens badly designed for the fuel 'wood' as well as the often difficult usage of the stoves and the wide range of possibilities for the user to influence the process of combustion. In this work is given a vivid description of the process of wood burning, developed on the chemical structure of the fuel and the basic knowledge of pollutant formation. Based on this, the most important influences on this process of technical combustion (i.e. heating power, dimensions of the wood pieces) and their effects on the pollutants emissions are discussed. These statements are completed with Emissionexperiments on 'warm air' fire-places, done by ourselves. The basic correlations of the pollutant-formation during the combustion, the concentration profiles in the reaction-zone and the relations between emission and operating parameters of the stoves are explained in depth. Based on these works, a 'warm air' fireplace interior and a tile stove interior (special wood stove, totaly build of stones) are developed. Both developments and their emissions based on their performances and the quantity of wood used are discussed. (orig.)SIGLEAvailable from TIB Hannover: F93B513+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman