HEAT PIPE COOLING OF TURBOSHAFT ENGINES
HEAT PIPE COOLING OF TURBOSHAFT ENGINES
复制标题
涡轮轴发动机的热管冷却
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Sandra Hoff
中科院分区：
文献类型：
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作者：
William G. Anderson;Thermacore;Inc.;Lancaster;Pa;Sandra Hoff
为了达到IHPTET第二阶段发动机的性能水平，需要减少涡轮发动机的冷却流量。热管是一种导热系数非常高的设备，可以帮助减少所需的冷却空气。进行了一项调查，以确定热管在涡轴发动机中的潜在应用。涡轮发动机部件的热管冷却应用包括动力涡轮第一级叶片、护罩和机壳、高压涡轮叶片和护罩以及T5温度探头。热管冷却的其他潜在应用包括回热循环和中间冷却、轴承冷却、减少红外信号和主动间隙控制。计算的性能收益包括比轴马力的增加和比油耗的降低，如IHPTET阶段11涡轮轴发动机性能模型所确定的那样。例如，使用热管冷却动力涡轮叶片、导风罩和机壳将使比轴马力增加6%，而比油耗降低2.2%。虽然这项研究考察了涡轴发动机，但大多数应用也适用于涡扇发动机。
Reduction in turbine engine cooling flows is required to meet the IHPTET Phase II engine performance levels. Heat pipes, which are devices with very high thermal conductance, can help reduce the required cooling air. A survey was conducted to identify potential applications for heat pipes in turboshaft engines. The applications for heat pipe cooling of turbine engine components included the power turbine first stage vanes, shroud, and case, the HP turbine vanes and shroud, and the T5 temperature probe. Other potential applications for heat pipe cooling include regenerative cycle and intercooling, bearing cooling, IR signature reduction, and active clearance control. Calculated performance benefits included an increase in specific shaft horsepower, and a decrease in specific fuel consumption, as determined with an IHPTET Phase 11 turboshaft engine performance model. For example, using heat pipes to cool the power turbine vanes, shroud, and case would increase the specific shaft horsepower by 6 percent, while decreasing the specific fuel consumption by 2.2 percent. While this study examined turboshaft engines, most of the applications are also applicable to turbofan engines.