Journal ArticleDOI
Recent developments in exergy analysis and exergoeconomics
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In this paper, an exergy analysis of a component of an energy conversion system can be split into avoidable/unavoidable exergy destruction and endogenous/exogenous exergy removal.Abstract:
In advanced exergy analysis, the exergy destruction within a component of an energy conversion system can be split into avoidable/unavoidable exergy destruction and endogenous/exogenous exergy destruction. A combination of these two concepts provides accurate information with respect to improving the overall system efficiency. Extended to exergoeconomics, the approach provides the costs associated with the avoidable endogenous and the avoidable exogenous exergy destruction and compares these costs with the respective investment costs. An exergoenvironmental analysis reveals the extent to which each component of a system is responsible for the overall environmental impact and identifies the real sources of the impact.read more
Citations
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Journal ArticleDOI
Conventional and advanced exergy analysis of an ejector refrigeration system
TL;DR: In this article, a comprehensive investigation of an ejector refrigeration system using conventional and advanced exergy analysis is presented, where the authors split the exergy destruction within each system component into endogenous/exogenous and avoidable/unavoidable parts.
Journal ArticleDOI
Comprehensive exergy-based evaluation and parametric study of a coal-fired ultra-supercritical power plant
Yongping Yang,Ligang Wang,Ligang Wang,Changqing Dong,Gang Xu,Tatiana Morosuk,George Tsatsaronis +6 more
TL;DR: In this article, both conventional and advanced exergetic analyses were conducted to a large-scale ultra-supercritical coal-fired power plant to identify and quantify the sites with the largest exergy destruction and losses, and to find the fuel-savings potential by improving each component in isolation.
Conventional and advanced exergyanalysis of an ejector refrigeration system
TL;DR: In this paper, an analysis of the performance of the ERS using dry and isentropic fluids has been carried out, and the results show that the dry fluids have generally better performance than the wet fluids.
Proceedings ArticleDOI
A General Exergy-Based Method for Combining a Cost Analysis With an Environmental Impact Analysis: Part I — Theoretical Development
TL;DR: In this paper, the authors deal with integrated conventional and advanced exergetic, exergoeconomic and exergonality analyses of a gas-turbine-based cogeneration system.
Journal ArticleDOI
Exergoeconomic analysis of carbon dioxide transcritical refrigeration machines
TL;DR: In this paper, a simple transcritical CO2 refrigeration machine is evaluated from the perspectives of energetic, exergetic, economic and exergoeconomic analyses, and the options for the structure and parametric improvements are discussed.
References
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Book
Thermal design and optimization
TL;DR: In this article, the authors present an overview of thermal system design using thermodynamics, modeling, and design analysis, including exergy analysis, energy analysis, and economic analysis.
Journal ArticleDOI
SPECO: A systematic and general methodology for calculating efficiencies and costs in thermal systems
TL;DR: In this article, a systematic and general methodology for defining and calculating exergetic efficiencies and exergy related costs in thermal systems is proposed, based on the Specific Exergy Costing (SPECO) approach, in which fuel and product of a component are defined by taking a systematic record of all exergy additions to and removals from all the exergy streams of the system, and the costs are calculated by applying basic principles from business administration.
Journal ArticleDOI
On avoidable and unavoidable exergy destructions and investment costs in thermal systems
TL;DR: In this paper, the authors discuss how to estimate the avoidable and unavoidable exergy destruction and investment costs associated with compressors, turbines, heat exchangers and combustion chambers in a cogeneration system.