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Basic Study on Heat Rejection System Using High Heat Flux Micro Channel Evaporator

机译：高热通量微通道蒸发器排热系统的基础研究

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Thermal management system which can reject very high amount of heat by small thermal devices will be required for future space systems. Our purpose is to develop miniaturized heat rejection system that can reject more than 100 W/cm2. In the evaporator, thin liquid film vaporization which can dissipate very high heat flux, was utilized. The liquid film is stabilized in micro-channels by capillary forces. The micro-channels are fabricated by chemical etching on silicon and copper plate. Also miniaturized condenser which utilized droplet condensation was tested. Droplets were produced on a cooled plate covered by non-wetting coating. After we built a heat rejection system constructed by above mentioned evaporator and condenser, influence of heat flux, coolant flow rate, and inlet temperature on the temperature of the heater element were investigated. Water is used as working fluid. Heat flux of 100 W/cm~2 could be achieved for water inlet temperature in flow rate of 3.0 mL/min. The temperature of the heater element is kept constant at about 120℃.
机译：未来的太空系统将需要一种热管理系统，该系统可以通过小型热装置排出大量热量。我们的目的是开发可以排泄超过100 W / cm2的小型排热系统。在蒸发器中，利用了可以耗散非常高的热通量的薄膜液化。液体膜通过毛细管力稳定在微通道中。通过在硅和铜板上化学蚀刻来制造微通道。还测试了利用液滴冷凝的小型冷凝器。在由非润湿涂层覆盖的冷却板上产生液滴。在我们建立了由上述蒸发器和冷凝器构成的排热系统之后，研究了热通量，冷却剂流量和入口温度对加热元件温度的影响。水被用作工作流体。进水温度为3.0 mL / min时，热通量可达到100 W / cm〜2。加热元件的温度保持恒定在约120℃。

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