新型平板式CPL系统的设计与实验

设计并研制了一种新型平板式CPL系统.在所设计的新型平板式CPL系统中,蒸发器和冷凝器均采用带有毛细芯的平板式结构.蒸发器的设计借鉴了LHP蒸发器的设计,在回流液体人口侧设计了由纵横十字槽道构成的液体补偿腔,以提高系统的稳定性以及高热流密度工作特性;冷凝器采用新型的三通道平板式结构,以改善系统的启动特性和稳定性.在系统的构成方面,贮液器通过两条通道和系统回路进行流体交换;贮液器和冷凝器相连;贮液器和回流液体管道相连.针对所设计的新型平板式CPL系统建立了试验系统,进行了启动和变工况等运行特性试验.实验证明:该系统在高、低热负荷下都具有可靠、简便的启动特性,稳定的变工况运行性能.

Design and experimental studies on a new type of flat-plane CPL

A new type of CPL system is constructed and tested in the present investigation by improving configurations both for system and components.In the present CPL,both evaporator and condenser are designed as a type of flat plate with porous wick.A plate type of evaporator with a cross channel for liquid supply was made to reduce the probability of dry-out point caused by strong evaporation in the case of high heat flux,and therefore to enhance the stability of the system.In addition,the condenser was designed with three ports for vapor-pipe inlet,liquid-pipe outlet and adjusting pipe connected to reservoir.The startup performance of the system benefits greatly from this threeport design,as liquid in the system can be easily pressed into reservoir due to resistance reduction.In the present system configuration,the fluid exchange between the reservoir and the loop is through two ways: from reservoir to condenser,and from reservoir to liquid pipe line.This is very different from the traditional CPL,and can greatly improve the startup performance and the adjustment capability of the system.Startup experiments under different heat load and working conditions were conducted.Excellent startup performance,being stable and easy,has been shown for the plate type CPL system,which validates the new configuration.