摘要
本文提出了一种较准确测量管外壁面温度的热电偶埋设方法,实验研究了交叉椭圆管的管内换热性能。结果表明,该方法可较好的将管外换热热阻分离开来,实现异形管内换热性能的测试。
A new embedding method of thermocouple is presented to more accurately measure the surface temperature. The experimental results of convection heat transfer in a new abnormal tube-alternating-axis-elliptial-tube show that the outer convective resistance can be separated from the total thermal resistance by this method. Compared to the circular tube, the convection heat transfer in the alternating-axis-elliptical-tube is 30% enhanced.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2003年第5期831-833,共3页
Journal of Engineering Thermophysics
基金
国家重点基础研究与发展规划资助项目(G2000026301)
关键词
异形管
强化换热
测试
abnormal tubes
heat transfer enhancement
measurement
