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首页> 外文会议>ASME turbo expo >GAS TURBINE POWER AUGMENTATION - PARAMETRIC STUDY RELATING TO FOG DROPLET SIZE AND ITS INFLUENCE ON EVAPORATIVE EFFICIENCY
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GAS TURBINE POWER AUGMENTATION - PARAMETRIC STUDY RELATING TO FOG DROPLET SIZE AND ITS INFLUENCE ON EVAPORATIVE EFFICIENCY

机译：燃气轮机功率增强 - 参数研究与雾滴尺寸有关及其对蒸发效率的影响

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摘要

Several gas turbine power augmentation techniques are available to counter the detrimental drop in power and thermal efficiency that occur at high ambient temperatures. Inlet fogging and wet compression are two common and relatively simple techniques. This paper addresses the influence and importance of droplet size on evaporative cooling performance and efficiency. Common spray nozzles used for inlet fogging and wet compression are the impaction pin, swirl jet, air assisted, and swirl flash nozzles. The atomization process from these nozzles and their performance depends on the droplet size, size distribution, and spray plume shape. Droplets size varies with nozzle types, configurations, operating conditions, and nozzle manifold location in the gas turbine inlet duct as they are affected by airflow velocity, residence time coalescence effects, evaporation efficiency, and water carryover. The proper selection of nozzle type and location and nozzle distribution are of importance to avoid large droplets and under/over saturated areas which would affect compressor mechanical and aerodynamic efficiency. Analytical and numerical studies are compared to experimental results available from installed systems, and treated in the literature. This paper provides a comprehensive treatment of parameters affecting droplet size and will be of value to gas turbine fog system designers and users.
机译：有几种燃气轮机功率增强技术可用于对高环境温度下发生的功率和热效率进行抵消。入口雾化和湿式压缩是两个常见和相对简单的技术。本文解决了液滴尺寸对蒸发冷却性能和效率的影响和重要性。用于入口雾化和湿式压缩的常见喷嘴是撞击销，旋流，空气辅助和旋流闪存喷嘴。这些喷嘴的雾化过程及其性能取决于液滴尺寸，尺寸分布和喷雾羽毛形状。液滴尺寸随喷嘴类型，配置，操作条件和喷嘴歧管位置而变化，因为它们受气流速度，停留时间聚焦效果，蒸发效率和水携带的影响。正确选择喷嘴类型和位置和喷嘴分布是重视避免大型液滴和饱和区域，这会影响压缩机机械和空气动力学效率。将分析和数值研究与已安装系统获得的实验结果进行比较，并在文献中处理。本文提供了影响液滴尺寸的参数的综合处理，并将对燃气轮机雾系统设计人员和用户具有价值。

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