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http://dx.doi.org/10.3795/KSME-B.2013.37.10.901

Investigation of Water Evaporation from Biomass with Different Torrefaction Environments  

Go, Gun Yung (Dept. of Aerospace Engineering, Chonbuk Nat'l Univ.)
Kim, Man Young (Dept. of Aerospace Engineering, Chonbuk Nat'l Univ.)
Lee, Chang Yeop (Energy System R&D Group, KITECH)
Kim, Sae Won (Energy System R&D Group, KITECH)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.37, no.10, 2013 , pp. 901-909 More about this Journal
Abstract
Owing to the Increasing use of fossil fuels, worldwide concerns over environmental pollution are increasing. As a solution, ligneous biomass has emerged as a promising alternative fuel in recent times. Therefore, in this study, a moisture evaporation model that largely influences the energy density and efficiency of ligneous biomass is studied using a numerical approach. Furthermore, the thermal characteristics are analyzed in terms of torrefaction temperature and moisture fractions in the wood, and the type of wood species. The results show that the temperature and moisture fractions of wood decrease with an increase in the torrefaction temperature. In particular, when the torrefaction temperature is lower than 423K, there were little changes in the moisture fraction in the wood. Furthermore, it was found that charcoal is produced more slowly as the moisture fraction in the wood increases.
Keywords
Torrefaction; Biomass; Moisture Fraction; Pyrolysis; Species Reaction Rate;
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