Estimation of energy properties of torrefied Japanese cedar with colorimetric values
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- SAWAI Toru
- Department of Mechanical Engineering, Kindai University
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- KATAYAMA Ichiro
- Department of Biomechanical and Human Factors Engineering, Kindai University
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- IDA Tamio
- Research Institute of Biocoke, Kindai University
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- IMAMURA Hiroki
- Graduate School of Biology-Oriented Science and Technology, Kindai University
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- KAJIMOTO Takeshi
- Industrial Technology Center of Wakayama Prefecture
抄録
<p>Noticing the color variation of torrefied woody biomass with pyrolysis process, a non-invasive method to estimate energy properties such as elemental contents, higher heating value and energy yield is investigated. When the torrefied biofuel is produced and utilized, the quality control concerning energy properties is indispensable. The energy properties of torrefied woody biomass are correlated with its mass yield, and the relationship between mass yields and colorimetric values defined by CIELAB is experimentally examined. The results obtained for torrefied Japanese cedar are as follows. (1) The energy properties of torrefied Japanese cedar are expressed by simple relations of mass yield. The optimum torrefaction condition to produce torrefied biofuel can be evaluated by the mass yield. (2) To estimate the mass yield of torrefied Japanese cedar, the experimental correlations with colorimetric values are proposed. In the case of the sap-wood and heart-wood samples for brightness, L* above 45, the mass yield is correlated with L*, and in the case of the sap-wood, heart-wood and bark samples for L* below 45, the mass yield is correlated with color coordinate, a*. From the comparison between predicted mass yields and experimental data, it is found that the proposed experimental correlations can estimate the mass yield within an accuracy of ±10%. Therefore, the energy properties of torrefied Japanese cedar is easy to be checked by using the present non-invasive estimation method with colorimetric values.</p>
収録刊行物
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- Mechanical Engineering Journal
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Mechanical Engineering Journal 4 (1), 16-00320-16-00320, 2017
一般社団法人 日本機械学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001205515018112
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- NII論文ID
- 130005395597
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- ISSN
- 21879745
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可