In this study, the results of an investigation of the performance of a gas-steam combined cycle system (GSCCS) under exergetic and exergo-economical criteria are reported. The effective power (Pef), destroyed exergy (X), efficiency of exergy (ε), unit electric generation cost (Celec) and exergy-dependent economic worth of electrical energy (Cex,elec), which is novelly determined in this study, have been analyzed. The impacts of speed (N), pressure ratio of the gas cycle (λ), equivalence ratio (ϕ), the flow rate of the air mass ( m ˙ a {\dot{m}_{a}} ), the flow rate of the fuel mass ( m ˙ f {\dot{m}_{f}} ), inlet temperature of the air into the compressor ( T 1 {\mathrm{T}_{1}} ), steam temperature ( T 6 {\mathrm{T}_{6}} ) and pressure (P6) of the heat exchanger, outlet pressure (P7) of the high pressure steam turbine and condenser pressure (P9) on Pef, ε, Celec and Cex,elec have been parametrically evaluated. It was revealed that the stream and component characteristics of the system have significant influences on the performance characteristics of the GSCCS.

中文翻译：

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燃气-蒸汽联合循环系统的火用和火用经济分析

在这项研究中，报告了在火用和火用经济标准下对燃气-蒸汽联合循环系统 (GSCCS) 性能的调查结果。有效功率（P英夫)、被破坏的火用 (X)、火用效率 (ε)、单位发电成本 (C电) 和与火用有关的电能经济价值 (C例如，电子)，这是本研究中新确定的，已被分析。速度的影响（ñ), 气体循环压力比 (λ), 当量比 (φ), 气团流量 ( 米 ˙ 一个 {\dot{m}_{a}} ), 燃料质量的流量 ( 米 ˙ F {\dot{m}_{f}} ), 进入压缩机的空气入口温度 ( 吨 1 {\mathrm{T}_{1}} ), 蒸汽温度 ( 吨 6 {\mathrm{T}_{6}} ) 和压力 (P6) 的热交换器，出口压力 (P7) 的高压汽轮机和凝汽器压力 (P9) 在 P 上英夫, ε, C电和 C例如，电子进行了参数化评估。结果表明，系统的流量和组件特性对 GSCCS 的性能特性有显着影响。