化工进展2017，Vol.36Issue(6)：2010-2016,7.DOI:10.16085/j.issn.1000-6613.2017.06.006
探针法测量微细颗粒固定床有效热导率
A study on the heat probe to measure effective thermal conductivity of micro-particle packed bed
摘要
Abstract
For exploring the complex phenomena of heat and mass transfer in the micro-particle packed bed,the device to measure thermal conductivity was designed and built. The experiments showed that the error is less than 2.97% after calibrated by the probe factor,and reproducibility is good. Effects of particles diameters,porosity,velocity of flow and changes in reaction on the thermal conductivity of micro-particles were investigated experimentally by thermal probe method. The results indicated that the effective thermal conductivity in dry declined with the size of particles and porosity increase. The effective thermal conductivity in low velocity fluid(0.8mL/min,1.6mL/min,3.2mL/min) is converse. The thermal conductivity of the resin particles after the ion exchange with the conditions of dry and low velocity fluid has not changed much. The chemical reaction and interrelated processing has no significant influence on the thermal conductivity of particles by comparing with exchange of the ions of particles. The thermal conductivities of the soil from different areas in different ions further verify the above conclusions. It is a reliable and effective on-line method to measure the effective thermal conductivity of the micro-particle packed bed by thermal probe method.关键词
多孔介质/测量/固定床/探针法/热导率Key words
porous media/measurement/fixed-bed/thermal conductivity probe/thermal conductivity分类
数理科学引用本文复制引用
张心怡,郑艺华,冯守玲..探针法测量微细颗粒固定床有效热导率[J].化工进展,2017,36(6):2010-2016,7.基金项目
山东省自然科学基金(ZR2014EEM004)及山东省重点研发计划(2015GSF117019)项目. （ZR2014EEM004）
