摘要
深冷环路热管(CLHP)在正常工作之前,整个回路内工质处于超临界状态。通过对毛细芯在液体工质中良好的浸润,保证主蒸发器顺利启动。研究了从储气室位置、副蒸发器功率以及充装压力等影响超临界启动的因素对CLHP超临界启动过程的影响。结果表明:储气室的两种接入位置均能实现超临界启动过程;漏热量一定时,为了使主蒸发器达到启动条件,副蒸发器存在一个最小启动功率,且副蒸发器功率越大主蒸发器降温越迅速;对于回路结构一定的CLHP,当副蒸发器功率一定时,其存在一个最佳充装压力,在该充装条件下能使得启动过程最为迅速。
Before cryogenic loop heat pipe operates, the working fluid is in supercritical condition. In order to ensure the successful startup of the primary evaporator, the liquid working fluid must prime the cap- illary wick. The influences of hot reservoir location, secondary evaporator power and filling pressure were investigated on the supercritical startup. The experimental results show that the CLHP can accomplish the supercritical startup with two different reservoir locations. When the heat leak was given, there is a minimal secondary evaporator power for the primary evaporator to he primed. The higher the power on the secondary evaporator, the quicker the start-up process was added. For a specific configuration of the CLHP, there is an optimal filling pressure for the startup process to be quickest with a given power on the secondary evaporator.
出处
《低温工程》
CAS
CSCD
北大核心
2010年第3期18-21,60,共5页
Cryogenics
关键词
环路热管
深冷
超临界启动
实验
loop heat pipe cryogenic supercritical startup experiment
