Comparative Analysis of the Thermal Efficiency of Wood Pellet Boilers with Nozzle-type Burner Pins on the Grate

D. H. Kim; M. J. Kim; I. S. Jeong; L. H. Cho; C. G. Lee; W. H. Kim; S. H. Euh

doi:10.22698/jales.20180021

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2018 Vol.30, Issue 3 Preview Page Next Page

Research Article

Comparative Analysis of the Thermal Efficiency of Wood Pellet Boilers with Nozzle-type Burner Pins on the Grate 목재펠릿보일러 화격자 상 노즐형 버너핀의 적용에 따른 열효율 비교분석

December 2018. pp. 192-199

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Abstract

The main objective of this study was to improve the wood pellet boiler and overcome inefficient air supply to the grate in the combustion chamber. Nozzle-type burner pins were attached to the grate to increase the contact area between the solid fuel (pellets) in the grate and the supplied air. In order to verify the increase in thermal efficiency due to the nozzle-type burner pins, comparative experiments were conducted using the same two wood pellet boilers. Two hours of experiments were conducted under the same external conditions (amount of oxidizer, load, ambient temperature, and pellet consumption). The results showed that the combustion characteristics of the flue gas from the boiler with burner pins were improved compared to those of the conventional boiler: the carbon dioxide content was increased, and the thermal efficiency was increased by 2.51%. The contact area between the wood pellets in the grate and the air supply was increased by the nozzle-type burner pins; hence, this boiler showed an improved combustion performance compared to that of the conventional burner system.

Keywords

Injection air

Nozzle-type burner pin

Thermal efficiency

Wood pellet boiler

References

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Euh, S. H., Choi, Y. S., Nam, Y. S., Lee, C. G., Lee, S. Y., Oh, K. C., Oh, J. H., Kim, D. H. (2018) Development of a real-time drying control system for a pneumatic conveying dryer for sawdust in pellet production, Energy 161:10-16.

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Information

Publisher :Agriculture and Life Sciences Research Institute, Kangwon National University
Publisher(Ko) :강원대학교 농업생명과학대학 농업생명과학연구원
Journal Title :Journal of Agricultural, Life and Environmental Sciences
Journal Title(Ko) :농업생명환경연구
Volume : 30
No :3
Pages :192-199
Received Date : 2018-12-07
Revised Date : 2018-12-19
Accepted Date : 2018-12-19
DOI :https://doi.org/10.22698/jales.20180021

Journal of Agricultural, Life and Environmental Sciences ISSN:2233-8322(Print) 2508-870X(Online) 농업생명환경연구

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