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首页> 外文期刊>Microgravity science and technology >Fabrication of Sodium/lnconel 718 Heat Pipes for Combustor Cooling
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Fabrication of Sodium/lnconel 718 Heat Pipes for Combustor Cooling

机译：用于燃烧器冷却的钠/铬镍铁合金718热管的制造

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Cooling channel involved heat pipes, which synergistically combined the high conductivity of heat pipe and thermal efficiency of regenerative cooling, were considered for combustor cooling. In this study, cooling channels were fabricated in sodium/Inconel 718 heat pipes in China Academy of Aerospace Aerodynamics (CAAA). And their startup properties and thermal response were investigated systematically. It was found that the frozen startup limit of fabricated heat pipes were 2.60 and 2.76, satisfying the criterion for frozen startup. During startup tests, the sodium/Inconel 718 heat pipes startup successfully, displaying uniform temperatures of about 900 K and 830 K, respectively. Moreover, sodium/Inconel 718 heat pipes decreased operating temperatures and alleviated thermal stresses in combustor sidewalls. Under simulated Ma6 aerothermal environment, the operating temperature of sodium/Inconel 718 heat pipe was 1007 K, being 224 K lower than that of regenerative cooling model. Therefore, it was concluded that heat pipes could increase the thermal margin of regenerative cooling system, being suitable for applications in combustor cooling.
机译：涉及热管的冷却通道，考虑将热管的高导热性和再生冷却的热效率协同结合，用于燃烧室冷却。在这项研究中，冷却通道是在中国航空航天动力学研究院（CAAA）的Na / Inconel 718热管中制造的。并对它们的启动性能和热响应进行了系统的研究。结果表明，装配式热管的冻结启动极限分别为2.60和2.76，满足冻结启动标准。在启动测试期间，钠/ Inconel 718热管成功启动，分别显示约900 K和830 K的均匀温度。此外，钠/因科镍合金718热管降低了工作温度，并减轻了燃烧器侧壁中的热应力。在模拟的Ma6空气热环境下，Na / Inconel 718热管的工作温度为1007 K，比蓄冷模型低224K。因此，可以得出结论，热管可以增加蓄冷系统的热裕度，适用于燃烧室冷却。

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