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RISExergy Analysis of Combined Cycles: Part 1—Air-Cooled Brayton-Cycle Gas Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Quantitative analytical tools based on the second law of thermodynamics provide insight into the complex optimization tradeoffs encountered in the design of a combined cycle. These tools are ...
GASCAN—An Interactive Code for Thermal Analysis of Gas Turbine Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A general, dimensionless formulation of the thermodynamic, heat transfer, and fluid-dynamic processes in a cooled gas turbine is used to construct a compact, flexible, interactive system-analysis ...
A Modified, High-Efficiency, Recuperated Gas Turbine Cycle
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The thermal efficiency of an intercooled/recuperated cycle may be increased by: (a) evaporatively aftercooling the compressor discharge; and (b) injecting and evaporating an additional amount of ...
On Thermodynamics of Gas-Turbine Cycles: Part 1—Second Law Analysis of Combined Cycles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The energy-balance approach to cycle analysis has inherent limitations. These arise from the fact that the first law of thermodynamics contains no distinction between heat and work and no ...
Two-Phase Transpiration Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Two-phase transpiration is shown to possess considerable potential for gas turbine cooling. In this concept, water fed into a porous component boils within the wall. The resulting steam issues ...
On Thermodynamics of Gas-Turbine Cycles: Part 2—A Model for Expansion in Cooled Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: While raising turbine inlet temperature improves the efficiency of the gas-turbine cycle, the increasing turbine-cooling losses become a limiting factor. Detailed prediction of those losses is a ...
On Thermodynamics of Gas-Turbine Cycles: Part 3—Thermodynamic Potential and Limitations of Cooled Reheat-Gas-Turbine Combined Cycles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Reheat gas turbines have fundamental thermodynamic advantages in combined cycles. However, a larger proportion of the turbine expansion path is exposed to elevated temperatures, leading to increased ...
Exergy Analysis of Combined Cycles: Part 2—Analysis and Optimization of Two-Pressure Steam Bottoming Cycles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Results of a study for selecting the optimum parameters of a dual-pressure bottoming cycle as a function of the gas turbine exhaust temperature are presented. Realistic constraints reflecting ...
Thermodynamics of an Isothermal Gas Turbine Combined Cycle
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The isothermal (or multiple-reheat) gas turbine performs the combustion/work extraction process at a sustained, elevated temperature. This has distinct thermodynamic advantages in combined cycles ...
On the Design of High-Temperature Gas Turbine Blade Water-Cooling Channels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Centrifugal and Coriolis accelerations have a strong impact on the fluid dynamics and heat transfer in the various schemes of water cooling being actively considered for rotating blades in very ...