Characteristics of Internal Thermal Conduction into High-Density Solid Biomass, Closing Asymptotically to Apparent Specific Gravity 1.4

Abstract

Various conversion technologies of biomass have been created since the development of utilization technology of biomass was worked on in 2000. However, the innovation conversion technologies created by the development still have problems of high water content and low density, which are negative points on usage of biomass. From the viewpoint of density of biomass, we crushed molecular space of biomass without carbonization and semi-carbonization. In this study, we measured internal thermal conduction of high-density solid biomass, closing asymptotically to true specific gravity 1.4 of biomass and investigated the characteristics of internal thermal conduction. It is shown that the value of dT/dr which shows spatial thermal gradient constantly increases with time course and not by depending on conditions. Also, it is shown that the dT/dr takes the ultimate value 380K/m and gradually decreases after taking the ultimate value.