并联平板重力热管传热性能实验研究  

Experimental Research on Heat Transfer Performance of Parallel Flat Gravity Heat Pipe

作　　者：沈超[1] 李欢 张东伟[2] 刘玉娟 王竹萱 刘芷莹 张幸涛[1] SHEN Chao;LI Huan;ZHANG Dong-Wei;LIU Yu-Juan;WANG Zhu-Xuan;LIU Zhi-Ying;ZHANG Xing-Tao(School of Civil Engineering,Zhengzhou University,Zhengzhou,Henan 450001,China;School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou,Henan 450001,China)

机构地区：[1]郑州大学土木工程学院,郑州450001 [2]郑州大学机械与动力工程学院,郑州450001

出　　处：《工程热物理学报》2022年第3期780-787,共8页Journal of Engineering Thermophysics

基　　金：河南省科技攻关项目(No.192102310244);国家自然科学基金(No.51706208);河南省高等学校供热空调重点学科开放实验室开放研究课题(No.2017HAC107)。

摘　　要：为了研究安装角度、工质及管径对并联平板重力热管传热性能和启动特性的影响,本文搭建了性能测试实验台并进行了对比实验研究。实验结果表明:在90°~60°倾角范围内,倾角对热管传热性能的影响不明显,随倾角的继续减小,热管运行热阻增大,传热极限减小;在低加热功率下充注丙酮的热管具有更好的传热性能,而在高加热功率时充注乙醇的热管传热性能更好;在加热功率较高时,加大热管管径,能使其运行更稳定,且具有更高的传热极限。In order to study the influences of inclination angle, working fluid and inner diameter on the heat transfer performance and start-up characteristics of Parallel Flat Gravity Heat Pipe(PFGHP), a performance test rig was built and contrast experimental studies were carried out. The experimental results show that the inclination angle has little effect on heat transfer performance of the heat pipe when the inclination angle ranges in 60°~90°. With the decrease of inclination angle, the thermal resistance of the PFGHP increases and the heat transfer limit declines. The heat pipe charged with acetone has better heat transfer performance at low heating power. While at high heating power, the heat pipe filled with ethanol performs higher heat transfer efficiency.Furthermore, the heat pipe with large diameter could make it run more stable and have higher heat transfer limit at high heating power.

关 键 词：重力热管 传热性能 倾斜角度 并联热管 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]