19%以上。In order to investigate the heat exchange principle between the ceramic balls heat carrier and biomass powder, heat exchange experiments were conducted with ceramic balls of 90℃ at 1.0, 1.2 and 1.4kg/min and biomass powder of ambient temperature in a vertical down tube heat transfer reactor. The percentages of heat conduction and heat convection of the total endothermic flux of the biomass powder were determined at different ceramic balls mass flow by heat balance analytic method. The results indicate that the heat conduction was the dominant heat transfer mechanism which reached 61%~87% during the heat exchange between the solid heat carrier and biomass powder. The heat conduction ratio decreased distinctly and the heat convection increased over 19% when the ceramic balls mass flow increased from 1.0kg/min to 1.4kg/min.
参考文献
相似文献
引证文献
引用本文
李志合,易维明,刘焕卫.陶瓷球固体热载体与粉状生物质的热平衡分析[J].农业机械学报,2009,40(7):103-106. Analysis of Ceramic Ball Heat Carrier and Biomass Powder[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(7):103-106.