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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received July 29, 2023
Accepted October 19, 2023
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Effects of Excess Air and Energy Fraction on Heat Transfer for Co-fi ring of Eucalyptus Bark and Peanut Shell Blended Fuel in a Twin-Cyclonic Swirling Fluidized-Bed Combustor

Laboratory of Advanced Combustion Technology and Energy Systems, Department of Mechanical Engineering, Faculty of Engineering and Industrial Technology , Silpakorn University 1Gulf TS2 Company Limited , 545 Moo1 Eastern Seaboard Industrial Estate (Rayong) Tasit 2Offi ce of the Permanent Secretary , Ministry of Energy , Kanchanaburi City Hall
Korean Journal of Chemical Engineering, May 2024, 41(5), 1343-1353(11), https://doi.org/10.1007/s11814-024-00095-4

Abstract

Biomass plays an important role in mitigating greenhouse gas (GHG) emissions. However, the major problem in using biomass

is that inconsistent amounts are available throughout the year. The use of mixed fuels is one way to solve this problem.

Based on the lumped system analysis method, this experimental study investigated the eff ects of excess air ( EA ) and energy

fraction on the heat transfer coeffi cients of co-fi ring eucalyptus bark and peanut shell in a twin-cyclonic swirling fl uidizedbed

combustor. The blended fuel was fi red at a fi xed heat rate for various energy fractions of secondary fuel ( EF 2 ) and EA .

The radial and axial heat transfer coeffi cients were observed: the average heat transfer coeffi cient of each operating condition

showed signifi cant eff ects for EA , while the eff ect for EF 2 was not obvious. The heat transfer coeffi cient could be improved

by up to 11% in the bed region and by as much as 22% in the freeboard area when EA was increased from 40–80%.

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