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针对单环路脉动热管建立实验平台,实验中采用水浴加热及冷却方式作为热管运行测试的热工条件,着重考察了单环路脉动热管在不同的加热工况(不同加热温度及加热水循环流量)及不同倾斜角度下(30°,45°,60°,90°)的运行情况。主要通过传热量及运行热阻来评价热管的传热效果。实验结果表明,蒸发段加热工况在大流量(40 g/s)和较高温度加热条件下会出现局部干烧现象,且随着加热温度的升高干烧现象逐步加剧,进而影响热管的稳定运行和传热效果;蒸发段在较小热水流量(4 g/s)时保持稳定地运行;重力因素严重影响到单环路脉动热管稳定运行,垂直地面底部加热条件下运行效果最好。
Aiming at the experimental platform of single loop pulsating heat pipe, the heating and cooling methods of water bath were used as the thermal conditions of the heat pipe running test. The single loop pulsating heat pipe under different heating conditions (different heating temperature and circulating water flow) And different tilt angle (30 °, 45 °, 60 °, 90 °) of the operation. Mainly through heat transfer and thermal resistance to evaluate heat pipe heat transfer effect. The experimental results show that the partial dry-burning phenomenon occurs in the heating section under the condition of high flow rate (40 g / s) and higher temperature, and the phenomenon of dry-burning increases with the increase of heating temperature, Stable operation and heat transfer effect. The evaporation section keeps stable operation with a small hot water flow rate (4 g / s). The gravity factor seriously affects the stable operation of a single loop pulsating heat pipe and the best operation under the vertical ground floor heating .