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강새별(Sae Byul Kang),김혁주(Hyouck Ju Kim),김종진(Jong Jin Kim),박화춘(Hwa Choon Park),최규성(Kyu Sung Choi),심봉석(Bongseock Sim),오홍영(Hong-Young Oh) 대한설비공학회 2011 대한설비공학회 학술발표대회논문집 Vol.2011 No.7
Recently domestic wood pellet boilers are installed in rural and forestry houses. The fuel price per lower heating value of wood pellet is about 20 % lower than that of heating oil on July 2010. In spite of lower price of wood pellet, a few user of wood pellet boiler complain expensive fuel cost. One of this reason is inaccurate or improper air-fuel ratio setting of wood pellet boiler. O2 concentration of flue gas of domestic wood pellet boiler is about 9.7 % and there are few domestic wood pellet boiler which can control air-fuel ratio automatically. We tested a domestic wood pellet boiler in changing boiler thermal output. The nominal boiler thermal output is 25 ㎾ (21 500 ㎉/h). We measured thermal efficiency at 100 % boiler thermal load and partial loads. We tested an ignition characteristics of domestic wood pellet boilers.