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Enhancing thermal efficiency of wood pellet boilers by improving inlet air characteristics

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  • Eo, Jae Won
  • Kim, Min Jun
  • Jeong, In Seon
  • Cho, LaHoon
  • Kim, Seok Jun
  • Park, Sunyong
  • Kim, Dae Hyun

Abstract

The characteristics of air supplied to a wood pellet boiler during operation affects combustion efficiency and therefore, the thermal efficiency of the wood pellet boiler. Inlet air flow and quality can be improved to enhance thermal efficiency. To improve the inlet air flow, a ‘nozzle-type burner pin’ and ‘vortex generator’ were applied to the primary and the secondary air inlets, respectively. The former supplies inlet air directly into accumulated pellets, improving combustion conditions. The latter introduces vortexed air, improving mixing between pellet volatiles and inlet air thereby increasing the heat transfer rate from the combustion gas to the heating water. A system was designed to dehumidify and reheat inlet air by reaction with a lithium bromide solution to improve combustion conditions. Finally, three experimental groups and an integrated experimental group applying all the improvements were designed. The thermal efficiency of the experimental groups was compared and analyzed with the conventional wood pellet boiler through experiments. In each group, the thermal efficiency was improved from a minimum of 2.81% to a maximum of 5.78%, compared to conventional wood pellet boilers. The thermal performance of the wood pellet boiler was enhanced and the improvement and significance of thermal efficiency was validated.

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  • Eo, Jae Won & Kim, Min Jun & Jeong, In Seon & Cho, LaHoon & Kim, Seok Jun & Park, Sunyong & Kim, Dae Hyun, 2021. "Enhancing thermal efficiency of wood pellet boilers by improving inlet air characteristics," Energy, Elsevier, vol. 228(C).
    • Handle: RePEc:eee:energy:v:228:y:2021:i:c:s0360544221007246
    DOI: 10.1016/j.energy.2021.120475
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    1. Sandberg, Jan & Karlsson, Christer & Fdhila, Rebei Bel, 2011. "A 7Â year long measurement period investigating the correlation of corrosion, deposit and fuel in a biomass fired circulated fluidized bed boiler," Applied Energy, Elsevier, vol. 88(1), pages 99-110, January.
    2. Persson, Tomas & Wiertzema, Holger & Win, Kaung Myat & Bales, Chris, 2019. "Modelling of dynamics and stratification effects in pellet boilers," Renewable Energy, Elsevier, vol. 134(C), pages 769-782.
    3. Ahn, Joon & Jang, Jun Hwan, 2018. "Combustion characteristics of a 16 step grate-firing wood pellet boiler," Renewable Energy, Elsevier, vol. 129(PB), pages 678-685.
    4. Lee, Sang Yeol & Oh, Kwang Cheol & Lee, Chung Geon & Cho, La Hoon & Park, Sun Yong & Jeong, In Seon & Kim, Dae Hyun, 2018. "Improvement of thermal efficiency of wood pellet boilers through the refractory insulation in a combustion chamber and fire tube and baffle modification," Energy, Elsevier, vol. 161(C), pages 1115-1121.
    5. Euh, Seung Hee & Kafle, Sagar & Choi, Yun Sung & Oh, Jae-Heun & Kim, Dae Hyun, 2016. "A study on the effect of tar fouled on thermal efficiency of a wood pellet boiler: A performance analysis and simulation using Computation Fluid Dynamics," Energy, Elsevier, vol. 103(C), pages 305-312.
    6. Wang, Kui & Zhang, Yuanyuan & Sekelj, Gasper & Hopke, Philip K., 2019. "Economic analysis of a field monitored residential wood pellet boiler heating system in New York State," Renewable Energy, Elsevier, vol. 133(C), pages 500-511.
    7. Font Palma, Carolina, 2013. "Modelling of tar formation and evolution for biomass gasification: A review," Applied Energy, Elsevier, vol. 111(C), pages 129-141.
    8. Caposciutti, Gianluca & Barontini, Federica & Antonelli, Marco & Tognotti, Leonardo & Desideri, Umberto, 2018. "Experimental investigation on the air excess and air displacement influence on early stage and complete combustion gaseous emissions of a small scale fixed bed biomass boiler," Applied Energy, Elsevier, vol. 216(C), pages 576-587.
    9. Kafle, Sagar & Euh, Seung Hee & Cho, Lahoon & Nam, Yun Seong & Oh, Kwang Cheol & Choi, Yun Sung & Oh, Jae-Heun & Kim, Dae Hyun, 2017. "Tar fouling reduction in wood pellet boiler using additives and study the effects of additives on the characteristics of pellets," Energy, Elsevier, vol. 129(C), pages 79-85.
    10. Rabaçal, M. & Fernandes, U. & Costa, M., 2013. "Combustion and emission characteristics of a domestic boiler fired with pellets of pine, industrial wood wastes and peach stones," Renewable Energy, Elsevier, vol. 51(C), pages 220-226.
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