[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5855/ENERGY.2014.23.3.211

The Formation Characteristics of Tar, Ash and Clinker due to Combustion of Wood Pellet and Performance Analysis of Wood Pellet Boiler in terms of the Moisture Contents Change of the Wood Pellet

Euh, Seung Hee (Department of Biosystems Engineering, Kangwon National University)
Oh, Kwang Cheol (Department of Biosystems Engineering, Kangwon National University)
Oh, Jae Heun (Forest Practice Research Center, Korea Forest Research Institute)
Kim, Dae Hyun (Department of Biosystems Engineering, Kangwon National University)

Publication Information

Journal of Energy Engineering / v.23, no.3, 2014 , pp. 211-220 More about this Journal

Abstract

This study reports the formation characteristics of tar, ash and clinker due to a wood pellet grade and the performance analysis of wood pellet boiler in terms of the moisture contents change of the wood pellet. Tar was accumulated on the heating surface according to combustion of wood pellet, the ash was yielded on the floor of combustion chamber in a wood pellet boiler and the clinker was solidified at the burner due to combustion of the 3rd grade wood pellet. Especially, the moisture contents is important factor to define the grade. Wood of logging residues has a non-uniform moisture contents after the field process, yields of tar, ash and clinker are increased in case of combustion due to the high ash contents. For these reasons, emission of harmful compounds in the exhaust gas, decrease of boiler efficiency and the system operating errors are observed. In the performance analysis of wood pellet boiler in terms of the moisture contents change of the 1st grade wood pellet, the boiler efficiency was reduced by 27.08% with 6.6% moisture contents increase. The optimum moisture contents of wood pellet is needed to improve the boiler performance and efficiency.

Keywords

Wood pellet; Wood pellet boiler; Moisture contents; Efficiency; Tar;

Citations & Related Records

Reference

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