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http://dx.doi.org/10.5855/ENERGY.2015.24.2.120

A Study on Combustion Characteristics in terms of the Type of Fuel Supply Device (Feeder) of a Wood Pellet Boiler  

Choi, Yun Sung (Forest Practice Research Center, Korea Forest Research Institute)
Euh, Seung Hee (Forest Practice Research Center, Korea Forest Research Institute)
Oh, Kwang Cheol (Department of Biosystems Engineering, Kangwon National University)
Kim, Dae Hyun (Department of Biosystems Engineering, Kangwon National University)
Oh, Jae Heun (Forest Practice Research Center, Korea Forest Research Institute)
Publication Information
Journal of Energy Engineering / v.24, no.2, 2015 , pp. 120-128 More about this Journal
Abstract
This study reports the combustion characteristics, such as burner temperature and the concentration of exhausted gas ($O_2$, $CO_x$, $NO_x$) due to the different types and pitches of the fuel supply feeder of the wood pellet boiler. The 1st grade wood pellets composed of mainly larch have been used for the experiment. In case of using the spring feeder, mean temperature of burner was approximately $821.76^{\circ}C$, and the mean concentration of oxygen, carbon monoxide, carbon dioxide and nitrogen oxide were approximately 8.88%, 93.35ppm, 12.15% and 139.83 ppm, respectively. The test result with the spring feeder was shown to approach the condition of complete combustion compared to that of a screw feeder and were in good agreement with authentication judgement standard. Furthermore, the combustion efficiency was improved according to the growth of screw pitch. The control of air flow rate from the blower and ventilator is needed to achieve the complete combustion.
Keywords
Wood pellet boiler; Wood pellet; Combustion; Exhaust gas; Feeder;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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