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首页> 外文期刊>Journal of Engineering for Gas Turbines and Power >Sensitivity Analysis on the Effect of D32 and Dv90 on the Evaporation Efficiency of Gas Turbine Inlet Fogging for Power Augmentation
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Sensitivity Analysis on the Effect of D32 and Dv90 on the Evaporation Efficiency of Gas Turbine Inlet Fogging for Power Augmentation

机译：D32和Dv90对增强功率的燃气轮机进气雾化蒸发效率影响的敏感性分析

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摘要

Gas turbine output is strongly dependent on the ambient air temperature. This decrease usually occurs in the hot afternoon during the peak demand for power. One way to counter this drop in output is to cool the inlet air using one of the available cooling technologies such as the inlet fog cooling of gas turbine engines for power augmentation. This technology is well established with over 1000 fogging systems installed all around the world on gas turbines of various makes and sizes ranging from 5 MW to 250 MW. Two types of statistical droplet diameters are used to characterize the droplet sizes from nozzles used in the fogging systems, namely D32 (Sauter mean diameter) (SMD) and Dv90 (diameter for which 90% of the water volume in the spray is less than or equal to). This paper will show the importance of each diameter on the performance of fogging systems. For this purpose, a heat and mass transfer theoretical model is developed to analyze the dynamics of evaporation of fog droplets. The model will quantify the evaporative efficiency of fog droplets for different D32 and Dv90 values derived from experimentally measured droplet size distributions at two typical ambient psychrometric conditions: hot and dry, and cold and humid.
机译：燃气轮机的输出在很大程度上取决于周围的空气温度。这种下降通常发生在电力需求高峰期间的炎热下午。解决这种输出下降的一种方法是使用一种可用的冷却技术来冷却进气，例如，用于增强功率的燃气涡轮发动机的进气雾冷却。这项技术已经很好地建立起来，在全球安装了1000多个雾化系统，这些雾化系统的制造商和规模从5兆瓦到250兆瓦不等。两种统计液滴直径用于表征雾化系统中使用的喷嘴的液滴尺寸，即D32（苏特平均直径）（SMD）和Dv90（直径，其中喷雾中90％的水量小于或等于90％）。等于）。本文将展示每个直径对雾化系统性能的重要性。为此，建立了传热传质理论模型来分析雾滴的蒸发动力学。该模型将量化雾滴在不同的D32和Dv90值下的蒸发效率，这些D32和Dv90值是通过在两个典型的环境湿度法条件下（热和干燥，冷和潮湿）通过实验测得的雾滴尺寸分布得出的。

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