Estimation of energy properties of torrefied Japanese cedar with colorimetric values

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 e...

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Autores principales:	Toru SAWAI, Ichiro KATAYAMA, Tamio IDA, Hiroki IMAMURA, Takeshi KAJIMOTO
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	woody biomass torrefaction solid biofuel higher heating value energy yield colorimetric values Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/f404be530c1b464ba50ab53e669badbc
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spelling	oai:doaj.org-article:f404be530c1b464ba50ab53e669badbc2021-11-26T07:00:24ZEstimation of energy properties of torrefied Japanese cedar with colorimetric values2187-974510.1299/mej.16-00320https://doaj.org/article/f404be530c1b464ba50ab53e669badbc2016-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/4/1/4_16-00320/_pdf/-char/enhttps://doaj.org/toc/2187-9745Noticing 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.Toru SAWAIIchiro KATAYAMATamio IDAHiroki IMAMURATakeshi KAJIMOTOThe Japan Society of Mechanical Engineersarticlewoody biomasstorrefactionsolid biofuelhigher heating valueenergy yieldcolorimetric valuesMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 4, Iss 1, Pp 16-00320-16-00320 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	woody biomass torrefaction solid biofuel higher heating value energy yield colorimetric values Mechanical engineering and machinery TJ1-1570
spellingShingle	woody biomass torrefaction solid biofuel higher heating value energy yield colorimetric values Mechanical engineering and machinery TJ1-1570 Toru SAWAI Ichiro KATAYAMA Tamio IDA Hiroki IMAMURA Takeshi KAJIMOTO Estimation of energy properties of torrefied Japanese cedar with colorimetric values
description	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.
format	article
author	Toru SAWAI Ichiro KATAYAMA Tamio IDA Hiroki IMAMURA Takeshi KAJIMOTO
author_facet	Toru SAWAI Ichiro KATAYAMA Tamio IDA Hiroki IMAMURA Takeshi KAJIMOTO
author_sort	Toru SAWAI
title	Estimation of energy properties of torrefied Japanese cedar with colorimetric values
title_short	Estimation of energy properties of torrefied Japanese cedar with colorimetric values
title_full	Estimation of energy properties of torrefied Japanese cedar with colorimetric values
title_fullStr	Estimation of energy properties of torrefied Japanese cedar with colorimetric values
title_full_unstemmed	Estimation of energy properties of torrefied Japanese cedar with colorimetric values
title_sort	estimation of energy properties of torrefied japanese cedar with colorimetric values
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/f404be530c1b464ba50ab53e669badbc
work_keys_str_mv	AT torusawai estimationofenergypropertiesoftorrefiedjapanesecedarwithcolorimetricvalues AT ichirokatayama estimationofenergypropertiesoftorrefiedjapanesecedarwithcolorimetricvalues AT tamioida estimationofenergypropertiesoftorrefiedjapanesecedarwithcolorimetricvalues AT hirokiimamura estimationofenergypropertiesoftorrefiedjapanesecedarwithcolorimetricvalues AT takeshikajimoto estimationofenergypropertiesoftorrefiedjapanesecedarwithcolorimetricvalues
_version_	1718409754735280128

Estimation of energy properties of torrefied Japanese cedar with colorimetric values

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