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- W2290791911 abstract "Gas turbine-based combined cycles have gained broad market acceptance due to their favorable economics, high efficiency and excellent environmental performance. Combined-cycle performance improvements have tracked the rapid advance of gas turbine technology. The introduction of the steam-cooled STAG 107H and 109H combined-cycle systems with their 60% net plant efficiency capability is the latest step in this trend. High-efficiency steam bottoming cycles have also advanced, with the current state-of-the-art being the three-pressure reheat cycle. The Kalina Cycle utilizing a mixture of ammonia and water as the working fluid promises to further continue these combined cycle-performance improvements with dramatic changes in the bottoming cycle. These improvements are due to non-isothermal heat acquisition and heat rejection, as well as internal heat recuperation, which reduce losses of thermodynamic availability, or exergy, in the cycle. This paper discusses the application of the Kalina Cycle to gas turbine-based combined cycles, including system design and performance characteristics. It compares Kalina Cycle performance and economics with that of a state-of-the-art steam bottoming cycle, showing the potential economic advantages of this innovative cycle in combined-cycle applications. Several variants of the Kalina Cycle system and the Distillation Condensation Subsystem (DCSS), which replaces the condenser as the heat rejection and recuperationmore » system of the Kalina Cycle, have been studied. Results show that the Kalina Cycle can enhance the gas turbine bottoming cycle power output by over 15% when compared with a three-pressure reheat Rankine bottoming cycle. This yields an efficiency improvement of 2-3 percentage points, a significant advance in the state-of-the-art. Based on these substantial performance gains, GE is pursuing the commercialization of the Kalina Cycle for combined-cycle applications under a worldwide exclusive license from Exergy, Inc.« less" @default.
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- W2290791911 date "1995-12-31" @default.
- W2290791911 modified "2023-09-24" @default.
- W2290791911 title "Kalina cycle application to gas turbine combined cycles" @default.
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