重力辅助平板型环路热管实验研究

研制了一套以不锈钢丝网为毛细芯的平板式蒸发器、风冷式冷凝器,以甲醇为工作工质的环路热管,并着重研究了其在不同热负荷条件下启动特性以及变工况条件下运行特征。实验结果表明,平板式LHP可以在1～10W/cm2热流密度范围内顺利启动,并有良好的适应变热负荷能力,在改变工况的时候系统一般能在3min内重新达到新平衡状态。系统在18～48W热负荷条件下出现波幅和周期不等的温度波动现象。实验系统的热阻在0.29～3.2℃/W之间,热阻与热负荷、系统倾角以及工质充灌量有关,并重点研究了倾角以及充灌量对系统启动及其变工况运行的影响。

Experimental Study of a Gravity-assisted Plate Type of Loop Heat Pipe

Developed was a set of plate type evaporator and air cooled condenser with stainless steel wires serving as capillary cores, and loop heat pipes with methanol serving as the working medium. The emphasis was put on the study of their startup characteristics under different heat load conditions and their operating characteristics under off-design operating conditions. The test results show that the plate type of loop heat pipes can successfully start up at a heat flux density ranging from 1 W/cm2 to 10 W/cm2 ...