Modifications of SME Biomass Boiler for High Efficiency Multi-Fuel Input

© 2018 Asian Institute of Technology. This research focuses on modifications of a conventional biomass burner for a vertical fire-tube boiler to accept multiple fuel with increased efficiency. The selected boiler for this work has thermal power output of 90 kWth using firewood as primary fuel. The m...

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Main Authors: Krittipat Piawanich, Pruk Aggarangsi, James Moran
Format: Conference Proceeding
Published: 2019
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Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85062828937&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/65577
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-655772019-08-05T04:36:13Z Modifications of SME Biomass Boiler for High Efficiency Multi-Fuel Input Krittipat Piawanich Pruk Aggarangsi James Moran Energy © 2018 Asian Institute of Technology. This research focuses on modifications of a conventional biomass burner for a vertical fire-tube boiler to accept multiple fuel with increased efficiency. The selected boiler for this work has thermal power output of 90 kWth using firewood as primary fuel. The main objective is to design and develop multi-fuel feeding system to accept other available biomass applicable to existing burner with minimal modifications of the main structure. After the burner was refitted with the feeding system, the optimum surplus combustion air was studied for three types of solid fuels; corn cob, wood chips and biomass pellets. A breakpoint analysis was conducted for each biomass fuel. It was found that before burner modification, the highest values of thermal efficiency of fire wood burner were 40.52%. After the change of burner feeding in accordance with air input improvements, the thermal efficiency of the burner for corn cob, wood chip and pellets were 54.18 %, 50.46 % and 69.41 % respectively. The semiautomatic fuel feed can be readily utilized for all three fuel types and feed rate could be reduced by 58.1.1%, 58.2% and 70.63% by weight respectively compared with firewood. It is also found that biomass pellets are the most suitable alternative fuel for roasting of parchment coffee with the lowest processing cost in comparison with other biomasses. 2019-08-05T04:36:13Z 2019-08-05T04:36:13Z 2019-02-05 Conference Proceeding 2166059X 21660581 2-s2.0-85062828937 10.23919/ICUE-GESD.2018.8635727 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85062828937&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/65577
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Energy
spellingShingle Energy
Krittipat Piawanich
Pruk Aggarangsi
James Moran
Modifications of SME Biomass Boiler for High Efficiency Multi-Fuel Input
description © 2018 Asian Institute of Technology. This research focuses on modifications of a conventional biomass burner for a vertical fire-tube boiler to accept multiple fuel with increased efficiency. The selected boiler for this work has thermal power output of 90 kWth using firewood as primary fuel. The main objective is to design and develop multi-fuel feeding system to accept other available biomass applicable to existing burner with minimal modifications of the main structure. After the burner was refitted with the feeding system, the optimum surplus combustion air was studied for three types of solid fuels; corn cob, wood chips and biomass pellets. A breakpoint analysis was conducted for each biomass fuel. It was found that before burner modification, the highest values of thermal efficiency of fire wood burner were 40.52%. After the change of burner feeding in accordance with air input improvements, the thermal efficiency of the burner for corn cob, wood chip and pellets were 54.18 %, 50.46 % and 69.41 % respectively. The semiautomatic fuel feed can be readily utilized for all three fuel types and feed rate could be reduced by 58.1.1%, 58.2% and 70.63% by weight respectively compared with firewood. It is also found that biomass pellets are the most suitable alternative fuel for roasting of parchment coffee with the lowest processing cost in comparison with other biomasses.
format Conference Proceeding
author Krittipat Piawanich
Pruk Aggarangsi
James Moran
author_facet Krittipat Piawanich
Pruk Aggarangsi
James Moran
author_sort Krittipat Piawanich
title Modifications of SME Biomass Boiler for High Efficiency Multi-Fuel Input
title_short Modifications of SME Biomass Boiler for High Efficiency Multi-Fuel Input
title_full Modifications of SME Biomass Boiler for High Efficiency Multi-Fuel Input
title_fullStr Modifications of SME Biomass Boiler for High Efficiency Multi-Fuel Input
title_full_unstemmed Modifications of SME Biomass Boiler for High Efficiency Multi-Fuel Input
title_sort modifications of sme biomass boiler for high efficiency multi-fuel input
publishDate 2019
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85062828937&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/65577
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