涡节型、酒窝型强化管管内沸腾传热特性实验  

Experimental study of boiling heat transfer in vortex tubes and dimple tubes

作　　者：夏虎[1,2] 周永利 王国强[1] 邬琦琦[1] 唐经文[1] XIA Hu;ZHOU Yongli;WANG Guoqiang;WU Qiqi;TANG Jingwen(Key Laboratory of Low-grade Energy Utilization Technologies and Systems,Ministry of Education,Chongqing University,Chongqing 400044,P.R.China;CCTEG Chongqing Engineering Co.,Ltd.,400016 Chongqing,P.R.China)

机构地区：[1]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400044 [2]中煤科工集团重庆设计研究院有限公司,重庆400016

出　　处：《重庆大学学报（自然科学版）》2019年第9期10-17,共8页Journal of Chongqing University

基　　金：重庆市研究生教育教学改革研究项目资助(yjg173027);重庆大学教学改革研究项目资助(2018Y21,2017Y47);重庆大学第二批新工科研究与实践项目资助(0903005107001/013/005,0903005107001/013/004)~~

摘　　要：以微型Capstone C30燃气轮机排放的烟气余热为热源,研究涡节结构强化管、酒窝结构强化管和光管管内沸腾换热特性。实验结果表明:涡节型结构强化传热管管内沸腾换热系数约为光管的1.6~2.1倍,管外对流传热系数约为光管的1.3~1.5倍,总传热系数约为光管的1.4~1.5倍;酒窝型强化传热管管内沸腾换热系数约为光管的2.1~2.5倍,管外对流传热系数约为光管的1.8~2.0倍,总传热系数约为光管的1.9~2.1倍。分析了涡节型强化传热管和酒窝型强化传热管较光管传热性能好的原因。With micro turbine Capstone C30 flue gas as the heat source,the characteristics of boiling heat transfer inside tubes including vortex tubes, dimple tubes and plain tubes were investigated experimentally.The results reveal that boiling heat transfer coefficient of vortex tubes is about 1.6 to 2.1 times that of the plain tubes,external surface heat transfer coefficient is about 1.3 to 1.5 times that of the plain tube,and the overall heat transfer coefficient is about 1.3 to 1.6 times that of the plain tubes;boiling heat transfer coefficient of dimpled tubes is about 2.1 to 2.5 times that of the plain tubes,external surface heat transfer coefficient is about 1.8 to 2.0 times that of the plain tube,and the overall heat transfer coefficient is about 1.9 to 2.1 times that of the plain tubes.And the reason why the heat transfer performance of vortex tubes and dimple tubes is better than that of the plain tubes is analyzed.

关 键 词：涡节型强化传热管 酒窝型强化传热管 管内沸腾 换热器 

分 类 号：TK124[动力工程及工程热物理—工程热物理]