蒸发段和冷凝段长度比对铜—水热管传热性能的影响  

Influence of the Length of Evaporator/Condenser Section on the Heat Transfer Performance of Copper-water Heat Pipe

作　　者：赵建会[1] 王豆 段杰 杨楠 Zhao Jianhui;Wang Dou;Duan Jie;Yang Nan(School of energy, Xi’an university of Science and Technology, Xi’an, 710054)

机构地区：[1]西安科技大学能源学院,西安710054

出　　处：《制冷与空调（四川）》2018年第1期98-102,共5页Refrigeration and Air Conditioning

摘　　要：以铜-水热管为对象,设计了热管冷凝段的自然冷却实验,来探究不同热管蒸发段和冷凝段长度比对其传热性能的影响。实验测量了不同热源温度下,铜-水热管蒸发段/冷凝段分别为1:6、1:3和1:1.5时的冷凝段测点表面温度。通过对实验数据的对比分析,得出以下结论:不同蒸发段和冷凝段长度比下,铜-水热管冷凝段的温度均随蒸发段温度的升高而升高,且在热源温度较低时均具有良好的等温性,当热源为45℃,热管蒸发段与冷凝段为1:6时,冷凝段温度与热源温度的温差最小,仅为2.4℃,热管的等温性最佳。此研究期望对应用于热管供暖系统,特别是低温热水热管地板辐射供暖的热管选型提供基本实验数据和技术支撑。In this paper,the natural cooling experiment of heat tube condensing section was designed with the copper-water heat pipe as the object to explore the influence of the different length proportion between evaporator and condenser on the heat transfer performance.The surface temperature of the condensation section of the copper-water heat pipe was measured while The length proportion between evaporator and condenser were1:6,1:3and1:1.5respectively at different heat source temperatures.the following conclusion drawn by analyzing the experimental data:under the different length proportion between evaporation and condensation,the temperature of the condensation section of the copper-water heat pipe rise all along with the evaporation temperature,all present good isothermal performance at a lower heat source,the isothermal performance is best when the heat source up to45℃and the length proportion is1:6that minimum temperature difference between condensing temperature and heat source temperature is2.4℃.This study is expected to provide basic experimental data and technical support for the heat pipe selection of heat pipe heating system,especially for the heat pipe of low-temperature hot water floor radiant heating system.

关 键 词：铜-水热管 传热 蒸发 冷凝 

分 类 号：TK172[动力工程及工程热物理—热能工程]