{"title":"燃气-蒸汽联合循环系统的火用与火用经济性分析","authors":"G. Gonca, Bulent Guzel","doi":"10.1515/jnet-2022-0042","DOIUrl":null,"url":null,"abstract":"Abstract 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.","PeriodicalId":16428,"journal":{"name":"Journal of Non-Equilibrium Thermodynamics","volume":"47 1","pages":"415 - 431"},"PeriodicalIF":4.3000,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":"{\"title\":\"Exergetic and Exergo-Economical Analyses of a Gas-Steam Combined Cycle System\",\"authors\":\"G. Gonca, Bulent Guzel\",\"doi\":\"10.1515/jnet-2022-0042\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract 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.\",\"PeriodicalId\":16428,\"journal\":{\"name\":\"Journal of Non-Equilibrium Thermodynamics\",\"volume\":\"47 1\",\"pages\":\"415 - 431\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2022-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Non-Equilibrium Thermodynamics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1515/jnet-2022-0042\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MECHANICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Non-Equilibrium Thermodynamics","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1515/jnet-2022-0042","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MECHANICS","Score":null,"Total":0}
Exergetic and Exergo-Economical Analyses of a Gas-Steam Combined Cycle System
Abstract 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.
期刊介绍：
The Journal of Non-Equilibrium Thermodynamics serves as an international publication organ for new ideas, insights and results on non-equilibrium phenomena in science, engineering and related natural systems. The central aim of the journal is to provide a bridge between science and engineering and to promote scientific exchange on a) newly observed non-equilibrium phenomena, b) analytic or numeric modeling for their interpretation, c) vanguard methods to describe non-equilibrium phenomena.
Contributions should – among others – present novel approaches to analyzing, modeling and optimizing processes of engineering relevance such as transport processes of mass, momentum and energy, separation of fluid phases, reproduction of living cells, or energy conversion. The journal is particularly interested in contributions which add to the basic understanding of non-equilibrium phenomena in science and engineering, with systems of interest ranging from the macro- to the nano-level.
The Journal of Non-Equilibrium Thermodynamics has recently expanded its scope to place new emphasis on theoretical and experimental investigations of non-equilibrium phenomena in thermophysical, chemical, biochemical and abstract model systems of engineering relevance. We are therefore pleased to invite submissions which present newly observed non-equilibrium phenomena, analytic or fuzzy models for their interpretation, or new methods for their description.
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