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首页> 外文会议>ASME turbo expo >HIGH EFFICIENCY GAS TURBINE BASED POWER CYCLES - A STUDY OF THE MOST PROMISING SOLUTIONS: PART 2 - A PARAMETRIC PERFORMANCE EVALUATION
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HIGH EFFICIENCY GAS TURBINE BASED POWER CYCLES - A STUDY OF THE MOST PROMISING SOLUTIONS: PART 2 - A PARAMETRIC PERFORMANCE EVALUATION

机译：基于高效的燃气轮机的电源循环 - 对最有前途的解决方案的研究：第2部分 - 参数绩效评估

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摘要

In general, two approaches have been used in the gas turbine industry to improve Brayton cycle performance. One approach includes increasing Turbine Inlet Temperature (TIT) and cycle pressure ratio (β), but it is quite capital intensive requiring extensive research and development work, advancements in cooling (of turbine blades and hot gas path components) technologies, high temperature materials and NOx reducing methods. The second approach involves modifying the Brayton cycle. However, this approach did not become very popular because of the development of high efficiency gas turbine (GT) based combined cycle systems in spite of their high initial cost. This paper discusses another approach that has gained lot of momentum in recent years in which modified Brayton cycles are used with humidification or water/steam injection, termed "wet Cycles", resulting in lower cost/kW power system, or with fuel cells, obtaining " hybrid Cycles"; the cycle efficiency can be comparable with a corresponding combined cycle system including better part-load operational characteristics. Such systems, that include advanced Steam Injected cycle and its variants (STIG, ISTIG, etc.), Recuperated Water Injection cycle (RWI), humidified air turbine cycle (HAT) and Cascaded Humidified Advanced Turbine (CHAT) cycle, Brayton cycle with high temperature fuel cell, Molten Carbonate Fuel Cell (MSFC) or Solid Oxide Fuel Cells (SOFC) and combinations of these with the modified Brayton cycles, have not yet become commercially available as more development work is required. The main objective of this paper is to provide a detailed parametric thermodynamic cycle analysis of the above mentioned cycles and discussion of their comparative performance including advantages and limitations.
机译：通常，燃气轮机工业中使用了两种方法以提高布雷顿循环性能。一种方法包括提高涡轮机入口温度（山雀）和循环压力比（β），但它是非常资本的，需要进行广泛的研发工作，冷却（涡轮叶片和热气路径部件）技术，高温材料和高温材料NOx还原方法。第二种方法涉及修改布雷顿循环。然而，由于其高效率燃气轮机（GT）的组合循环系统，这种方法并没有变得非常流行，尽管它们的初始成本高。本文讨论了近年来近年来，改进的布雷顿循环与加湿或水/蒸汽喷射一起使用的另一种方法，称为“湿循环”，导致较低的成本/ kW电力系统，或燃料电池，获得“混合循环”;循环效率可以与相应的组合循环系统相当，包括更好的部分负载操作特性。包括先进的蒸汽注射循环及其变体（塞子，istig等），恢复水注射循环（RWI），加湿空气涡轮机循环（帽子）和级联加湿先进涡轮机（聊天）循环，Brayton循环，高温度燃料电池，熔融碳酸盐燃料电池（MSFC）或固体氧化物燃料电池（SOFC）和与改性布拉顿循环的组合，随着需要更多的开发工作，尚未变得可商购。本文的主要目的是提供上述周期的详细参数热力学循环分析，并讨论其比较表现，包括优缺点。

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