High Temperature Water Heat Pipes for Kilopower System
High Temperature Water Heat Pipes for Kilopower System
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DOI：
10.2514/6.2017-4698
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发表时间：
2017-07
期刊：
影响因子：
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通讯作者：
D. Beard;W. Anderson;C. Tarau
中科院分区：
文献类型：
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作者：
D. Beard;W. Anderson;C. Tarau
美国宇航局格伦研究中心正在研究小型裂变动力系统，以解决放射性同位素动力系统（RPS）和裂变表面动力系统（FPS）之间的差距，用于未来的航天器应用以及月球和火星表面任务。Kilopower系统在1至10千瓦范围内运行，使用碱金属热管向斯特林转换器供热以产生电力，使用钛水热管将废热排出并输送到散热器，在散热器中将废热排出到太空。热管的设计必须考虑到Kilopower系统在地球上的测试，在太空中的操作，发射期间的生存，以及相反的方向（蒸发器在冷凝器上方）。Advanced Cooling Technologies，Inc. (ACT)设计和制造混合屏槽钛水热管，因为单独的槽芯不足以适应各种工作环境。本文报道了钛水热管和散热器的制造和测试结果以及未来的发展努力。一个屏蔽的环形蒸发器接口的冷端的斯特林蒸发器的设计，制造，并焊接到槽热管先前开发。然后测试混合热管的热传输能力。热管散热器是通过使用S-Bond将实心铝面板连接到钛热管来制造的。热管散热器在真空下进行了粘合完整性的循环测试，并在环境条件下进行了散热器有效性的性能测试。
NASA Glenn Research Center is examining small fission power systems that address the gap between Radioisotope Power Systems (RPS) and Fission Surface Power Systems (FPS) for future spacecraft applications and Lunar and Martian surface missions. The Kilopower system, operating in the 1 to 10 kWe range, uses alkali metal heat pipes to supply heat to Stirling convertors to produce electricity and titanium water heat pipes to remove the waste heat and transport it to the radiators where it is rejected to space. The design of the heat pipes must allow for testing of the Kilopower system on earth, operation in space, survival during launch, and adverse orientations (evaporator above condenser). Advanced Cooling Technologies, Inc. (ACT) is designing and fabricating hybrid screen-groove titanium water heat pipes as solely grooved wicks are insufficient for the varied operating environments. This paper reports on the fabrication and test results for the titanium water heat pipes and radiators and future development efforts. A screened annular evaporator which interfaces to the cold end of the Stirling convertor was designed, fabricated, and welded to the grooved heat pipe previously developed. The hybrid heat pipe was then tested for heat transport capability. Heat pipe radiators were fabricated by joining solid aluminum facesheets to titanium heat pipes using S-Bond. The heat pipe radiators were cycle tested under vacuum for bond integrity and performance tested in ambient conditions for radiator effectiveness.