热管制造的新工艺及性能测试的试验研究

New Technology of Heat Pipe Manufacture and Performance Testing of Experimental Research

基于切向连续挤压技术背景下的真空热管制造方法,对一定型"Ω"形轴向微槽道热管的制造、性能测试进行试验研究,并分析热管在竖直工况不同冷却条件下的轴向温度分布,热阻和当量热导率,蒸发/凝结换热系数,工作温度在不同冷源温度下随热负荷的变化。试验表明,此种热管制造方法可行,与常规热管制造方法相比,省去了单根管壳抽真空的过程,这极大地促进了热管生产效率。并测得R11热管在低温和常温下具有良好的等温性能及传热性能。

Based on the tangential continuous extrusion technique of vacuum tube manufacturing methods, an experimental investigation for a heat pipe with axial “OMEGA”-shaped micro grooves is conducted to study the manufacture process and experimental research on the performance test. And analyzes the working condition of heat pipe in a vertical axial temperature distribution under different cooling conditions, the thermal resistance and the equivalent thermal conductivity coefficient, evaporation/condensation heat transfer coefficient, working temperature under different temperature cold source versus heat load. Experimental results show that this kind of heat pipe manufacturing method is feasible, compared with conventional methods, get rid of the single tube shell process of pumping air into vacuum state, which greatly promoted the efficiency of the heat pipe. The Freon-11 heat pipe has good performance of isothermal and heat transfer performance in low temperature and room temperature.