Experimental investigation of coal and pellet combustion in a manual loaded stove

Abstract

ABSTRACT Manufacture of burn-efficient automatic feed boilers and stoves is made in Turkey for the use of Pellet fuel for heating purposes. In rural areas where regional or central heating systems are not available and natural gas cannot be used, manually loaded stoves are widely used as individual heating systems. Manually loaded stoves, coal and wood are generally used as fuel and ignition of coal is done with wood pieces. In this study, the use of pellet and coal fuels in a manually loaded stove is experimentally investigated. Stove efficiency and emission values for three different combustion conditions (coal-pellet, coal, pellet) in manually loaded stoves were experimentally compared according to BS EN 13240 (Roomheaters Fired by Solid Fuel-Requirements and Test Methods) standard. Stove efficiency was calculated using the measurements made for each fuel. The efficiency obtained as a result of the experiments were calculated as 45.14%, 44.77%, and 44.11% for coal, pellet + coal and pellet, respectively. Due to the high amount of volatile matter in the pellet fuel and the incomplete combustion of volatile substances, the flue gas temperature and CO concentration become high and the stove efficiency decreases. In spite of this, in pellet burning, the amount of particulate matter under the bed in ash is less than the coal burning, which increases the stove efficiency slightly.