DEVELOPMENT OF A BRIQUETTE STOVE WITH A CANDLE BURNING PRINCIPLE – CHARACTERISTICS AND MEASUREMENT RESULTS

摘要

Because of commercial availability in urban areas the market share of wood briquettes is increasingrnsteadily. In 2009 nearly 350.000 to of wood briquettes were sold on the German market [1]. In Austria the amount ofrnsold briquettes increased by 34 % from 2012 to 2013 [2]. Briquettes are predominantly used in conventional logrnwood stoves. The consequences can be higher emissions and lower efficiency than possible with briquettes. Therncharacteristics of briquettes (geometry, homogeneous fuel composition, etc.) are similar to wood pellets. Theyrntherefore offer (semi)automatic combustion which has a high potential to reduce negative influences on emissionsrnand efficiency caused by user behavior or fuel quality. In the COMET-project FOWS II a small scale combustionrnsystem which is adapted for characteristics and combustion behavior of briquettes was developed. The innovativernsmall scale combustion system allows the combustion of a vertical briquette which burns like a candle from top tornbottom while permanently being hold at the same position in the combustion chamber by a mechanism.