Heat pipe turbine vane cooling
Heat pipe turbine vane cooling
复制标题
热管涡轮叶片冷却
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
A. Faghri
中科院分区：
文献类型：
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作者：
L. Langston;A. Faghri
在这个开始的程序中，使用热管原理来冷却燃气涡轮机叶片的适用性被解决。这一创新概念涉及将叶片内部装配成热管，并将叶片延伸到相邻的散热器中，从而将叶片入射热传递通过热管传递到散热器。由于热管工作流体的内部相变，这种设计提供了极高的传热速率和沿叶片沿着均匀的温度。此外，该技术还可以消除叶片前缘和后缘的热点，并通过防止热疲劳裂纹来增加叶片寿命。还存在不需要来自压缩机的引气的可能性，并且因此消除了由压缩机排出空气的转向导致的发动机性能损失。采用热管技术代替传统的气冷叶片可以显著提高燃气涡轮机的性能。本计画第一年将对一热管叶片进行详细的数值分析，并设计实验模型。
The applicability of using heat pipe principles to cool gas turbine vanes is addressed in this beginning program. This innovative concept involves fitting out the vane interior as a heat pipe and extending the vane into an adjacent heat sink, thus transferring the vane incident heat transfer through the heat pipe to heat sink. This design provides an extremely high heat transfer rate and a uniform temperature along the vane due to the internal change of phase of the heat pipe working fluid. Furthermore, this technology can also eliminate hot spots at the vane leading and trailing edges and increase the vane life by preventing thermal fatigue cracking. There is also the possibility of requiring no bleed air from the compressor, and therefore eliminating engine performance losses resulting from the diversion of compressor discharge air. Significant improvement in gas turbine performance can be achieved by using heat pipe technology in place of conventional air cooled vanes. A detailed numerical analysis of a heat pipe vane will be made and an experimental model will be designed in the first year of this new program.