Thermodynamic evaluation of different gas turbine blade cooling techniques
Thermodynamic evaluation of different gas turbine blade cooling techniques
复制标题
不同燃气轮机叶片冷却技术的热力学评估
DOI：
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复制
发表时间：
2008
期刊：
影响因子：
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通讯作者：
O. Singh
中科院分区：
文献类型：
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作者：
S. Kumar;O. Singh
成功和强大的燃气轮机技术的关键在很大程度上取决于新材料的引入和/或使用有效的涡轮叶片冷却手段和方法。本文对涡轮叶片不同冷却方式的冷却效果进行了比较评价。在以压缩空气为冷却介质的研究中，考虑了不同的冷却技术，如内冷却、膜冷却和蒸腾冷却。燃气轮机的性能结果已经用燃气轮机循环的总效率和比功率来表示，这在很大程度上取决于所采用的叶片冷却类型。考虑的自变量是TIT，压缩机压力比和进口冷却剂温度。采用冷却型燃气轮机模型、燃气轮机循环各部件模型和燃气特性模型进行参数化分析。已经开发了一个计算机代码ldquoGTANALYSrdquo来执行所有的计算。
The key to the successful and strong gas turbine technology bases significantly upon the introduction of new materials and/or the usage of efficient means & methods of turbine blades cooling. Present paper deals with the comparative evaluation of the cooling effectiveness for different methods of turbine blade cooling. Different cooling techniques such as internal cooing, film cooling and transpiration cooling have been considered for the study with compressed air as cooling medium. The performance results of the gas turbine have been expressed in terms of overall efficiency and specific power of the gas turbine cycle, which significantly depend on the type of blade cooling employed. The independent variables considered are the TIT, compressor pressure ratio and the inlet coolant temperature. Cooled gas turbine model, modeling of all components of gas turbine cycle and gas properties model have been used for parametric analysis. A computer code ldquoGTANALYSrdquo has been developed to perform all the calculations.