含固体颗粒流体旋流场强化传热综合性能实验  

Experimental research on comprehensive performance of heat transfer enhancement of swirling flow field with solid particles

作　　者：彭德其[1] 罗海松 俞天兰[2] 陈兰伟[1] 吴淑英[1] 韩玉叶 PENG De-qi LUO Hai-song YU Tian-lan CHEN Lan-wei WU Shu-ying HAN Yu-ye(Key Laboratory of welding robot and application technology of Hunan Province, School of Mechanical Engineering, Xiangtan University, Xiangtan 411105 ,Hunan Province, China Hunan University of Technology, Zhuzhou 412008 ,Hunan Province , China)

机构地区：[1]湘潭大学机械工程学院焊接机器人及应用技术湖南省重点实验室,湖南湘潭411105 [2]湖南工业大学,湖南株洲412008

出　　处：《化学工程》2017年第7期38-42,48,共6页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(51206071);湖南省自然科学基金项目(11JJ9003)

摘　　要：为了进一步提高不含固体颗粒流体旋流场强化传热,开展含固体颗粒流体旋流场强化传热综合性能实验,研究颗粒浓度、粒径、Re数等因素对3种扭曲管的综合强化传热性能的影响。结果表明:液固流体换热性能随着颗粒浓度、粒径、Re数的增大而提高。与单相流体比较,当粒径2 mm、颗粒浓度分布1%时,相同Re数下3种扭曲管的Nu数平均提高12.91%,13.12%和15.23%,管内流体压降平均提高60.22%,67.23%和73.16%。通过综合性能评价因子分析,当粒径为2—5 mm、颗粒浓度分布为5%,扭曲管导程为200 mm、椭圆度为1.49时具有较好的综合性能。In order to further enhance heat transfer of swirling flow field of single phase, the heat transfer experiment is conducted of liquid swirling flow field with solid particles, which researches the effect of particle concentration, particle size, Re number on comprehensive heat transfer performance in three different twisted tubes. The results show that the heat transfer performance of double phase swirling flow field increases with the rise of particle concentration, particle size and Re number. Compared with the single-phase flow field, Nu number is increased by 60.22%, 67.23% and 73. 16% respectively in the three twisted tubes under the conditions of particle size 2 mm, particle concentration 1% and the same Re number. Through comprehensive performance evaluation factor analysis, the comprehensive heat transfer performance is good under the conditions of particle size 2-5 mm, particle concentration 5%, twisted tube lead 200 ram, and ellipse degree 1.49.

关 键 词：旋流场 传热 颗粒 扭曲管 压降 综合性能评价因子 

分 类 号：TQ021.3[化学工程]