Air pollution burning different kinds of wood in small power boilers

Abstract

Experimental investigations have been performed, during which different kinds of wood have been burnt (fire-wood, wood granules, wood briquettes, sawdust) with the aim to determine the quantities of gases emitted in the air. For the investigation a water boiler burnt by solid fuel with a nominal capacity of 20 kW was applied. For testing gas analyser Testo-350 was used to measure the quantity of gas dispersed into the air (in carbon monoxide – CO and nitrogen oxides – NOx smoke, the quantity of oxygen – O2, the smoke temperature of concentrations in the measurement spot). The quantities of harmful gaseous materials have been measured burning different kinds of wood. The smallest quantities of gaseous materials have been obtained in the process of burning wood granules. The possibility to regulate the combustion process diminishes the gas emision.