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Experimental study and modelling of the ventilation power and maximum temperature of low-pressure steam turbine last stages at low load

机译：低压汽轮机低负荷末级通风功率和最高温度的实验研究与建模

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摘要

Experimental investigations on the behavior of a low-pressure turbine operating at low volume flow have been carried out. Detailed analysis of the measurements reveal a series of macroscopic correlations useful for both understanding and modelling the whole low volume flow phenomenon. A novel concept of blade saturation temperature has been introduced, while a non-dimensional group has been identified in order to provide the best correlation with the measured ventilation power. A comparison of existing ventilation power equations has been carried out, showing a clear improvement of the proposed correlation over existing ones. Finally, a simplified approach able to predict both ventilation power and maximum flow temperature is presented.
机译：已经进行了在低体积流量下运行的低压涡轮机性能的实验研究。对测量值的详细分析揭示了一系列宏观相关性，可用于理解和建模整个低体积流量现象。引入了叶片饱和温度的新概念，同时确定了一个无量纲的组，以提供与测得的通风量的最佳相关性。已对现有通风功率方程进行了比较，显示出与现有方程相比，建议的相关性有了明显的改进。最后，提出了一种能够预测通风功率和最高流量温度的简化方法。

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