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首页> 外文会议>Conference on Cryogenic Optical Systems and Instruments X; Aug 6, 2003; San Diego, California, USA >Design Optimization of a Hydrogen Advanced Loop Heat Pipe for Space-Based IR Sensor and Detector Cryocooling
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Design Optimization of a Hydrogen Advanced Loop Heat Pipe for Space-Based IR Sensor and Detector Cryocooling

机译：基于空间的红外传感器和探测器低温冷却氢高级循环热管的设计优化

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摘要

Next generation space infrared sensing instruments and spacecraft will require drastic improvements in cryocooling technology in terms of performance and ease of integration. Projected requirements for cryogenic thermal control systems are: high duty cycle heat loads, low parasitic heat penalty, long transport distances, highly flexible transport lines, and lower cooling temperatures. In the current state of cryocooling transport technology, cryogenic Loop Heat Pipes (CLHPs) are at the forefront of intensive research and development. CLHPs are capable of dispersing heat quickly from an IR heat source and transporting it to remotely located cryocoolers via small and flexible transport lines. Circulation of working fluid in a CLHP is accomplished entirely by capillary action developed in fine pore wicks of the system capillary pumps. Thus they contain no mechanical moving parts to wear out or to introduce unwanted vibrations to the spacecraft. A recently developed CLHP using Hydrogen as the working fluid performed extremely well in the temperature range of 20-30K under the most severe operating conditions. However, it was not optimized for spacecraft applications due to cost and schedule constraints of the initial research phase. Design optimization of the Hydrogen Advanced Loop Heat Pipe is the main objective of the follow-on research. Chief among the system improvements is the weight and volume reduction of the loop components.
机译：下一代太空红外传感仪器和航天器将需要在性能和易于集成方面对冷冻冷却技术进行重大改进。低温热控制系统的预计要求是：高占空比热负荷，低寄生热损失，长运输距离，高度灵活的运输线路以及较低的冷却温度。在低温制冷运输技术的当前状态下，低温回路热管（CLHP）处于密集研究和开发的最前沿。 CLHP能够从红外热源快速散发热量，并通过小型灵活的传输线将其传输到远程的低温冷却器。 CLHP中工作流体的循环完全通过系统毛细管泵细孔芯中产生的毛细管作用来完成。因此，它们不包含机械运动部件，以免磨损或将不必要的振动引入航天器。最近开发的使用氢作为工作流体的CLHP在最严酷的操作条件下，在20-30K的温度范围内表现出色。但是，由于初始研究阶段的成本和进度限制，尚未针对航天器应用进行优化。氢高级回路热管的设计优化是后续研究的主要目标。系统改进中最主要的是减少了环路组件的重量和体积。

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