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Journal ArticleDOI

Exergoeconomic analysis of a combined heat and power (CHP) system

TL;DR: In this paper, an exergoeconomic analysis of a combined heat and power (CHP) system along its main components installed in Eskisehir City of Turkey is presented.
Abstract: This study deals with exergoeconomic analysis of a combined heat and power (CHP) system along its main components installed in Eskisehir City of Turkey. Quantitative exergy cost balance for each component and the whole CHP system is considered, while exergy cost generation within the system is determined. The exergetic efficiency of the CHP system is obtained to be 38.33% with 51 475.90 kW electrical power and the maximum exergy consumption between the components of the CHP system is found to be 51 878.82 kW in the combustion chamber. On the other hand, the exergoeconomic analysis results indicate that the unit exergy cost of electrical power produced by the CHP system accounts for 18.51 US$ GW−1. This study demonstrates that exergoeconomic analysis can provide extra information than exergy analysis, and the results from exergoeconomic analysis provide cost-based information, suggesting potential locations for the CHP system improvement. Copyright © 2007 John Wiley & Sons, Ltd.
Citations
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Journal ArticleDOI
01 Oct 2011-Energy
TL;DR: In this article, a comprehensive exergy, exergoeconomic and environmental impact analysis and optimization is reported of several combined cycle power plants (CCPPs), and a multi-objective optimization is performed to determine the best design parameters, accounting for exergetic, economic and environmental factors.

441 citations

Journal ArticleDOI
TL;DR: The combined cooling, heating and power (CCHP) system has been increasingly attracting attention in academia and industries in recent years, thanks to its distinctive advantages of high system and economic efficiency and less greenhouse gas (GHG) emissions as discussed by the authors.
Abstract: The combined cooling, heating and power (CCHP) system – a typical representative of the decentralized energy system – has been increasingly attracting attention in academia and industries in recent years, thanks to its distinctive advantages of high system and economic efficiency, and less greenhouse gas (GHG) emissions In this paper, the state of the art of CCHP research is surveyed First, the development and working scheme of the CCHP system will be presented Some analyses of the advantages of this system and a brief introduction of the related components are then given in the first part In the second part of this paper, we elaborately introduce the prime mover and thermally activated facilities Recent research progress on the management, control, system optimization and sizing will be summarized in the third part The development of the CCHP system in representative countries and the development barriers will be discussed in the last part

288 citations

Journal ArticleDOI
TL;DR: In this paper, the performance of combined cooling, heating, and power (CCHP) and CHP systems operating following the electric load (FEL) and operating following thermal load (FTL), based on primary energy consumption (PEC), operation cost, and carbon dioxide emissions (CDE), was analyzed.
Abstract: Heating and cooling energy requirements for buildings are usually supplied by separated systems such as furnaces or boilers for heating, and vapor compression systems for cooling. For these types of buildings, the use of combined cooling, heating, and power (CCHP) systems or combined heating and power (CHP) systems are an alternative for energy savings. Different researchers have claimed that the use of CCHP and CHP systems reduces the energy consumption related to transmission and distribution of energy. However, most of these analyses are based on reduction of operating cost without measuring the actual energy use and emissions reduction. The objective of this study is to analyze the performance of CCHP and CHP systems operating following the electric load (FEL) and operating following the thermal load (FTL), based on primary energy consumption (PEC), operation cost, and carbon dioxide emissions (CDE) for different climate conditions. Results show that CCHP and CHP systems operated FTL reduce the PEC for all the evaluated cities. On the other hand, CHP systems operated FEL always increases the PEC. The only operation mode that reduces PEC and CDE while reducing the cost is CHP-FTL. Copyright © 2009 John Wiley & Sons, Ltd.

232 citations

Journal ArticleDOI
TL;DR: In this article, a combined cycle power plant (CCPP) with a supplementary firing system is first thermodynamically analyzed through energy and exergy, and the optimal design of operating parameters of the plant is then performed by defining an objective function and applying a generic algorithm (GA) type optimization method.

204 citations

Journal ArticleDOI
01 Dec 2010-Energy
TL;DR: In this paper, a combined heat and power plant for cogeneration purposes that produces 50MW of electricity and 33.3 kg/s of saturated steam at 13 bar is optimized using genetic algorithm.

204 citations

References
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Book
28 Nov 1995
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.
Abstract: Introduction to Thermal System Design Thermodynamics, Modeling, and Design Analysis Exergy Analysis Heat Transfer, Modeling, and Design Analysis Applications with Heat and Fluid Flow Applications with Thermodynamics and Heat and Fluid Flow Economic Analysis Thermoeconomic Analysis and Evaluation Thermoeconomic Optimization Appendices Index

3,050 citations


"Exergoeconomic analysis of a combin..." refers background in this paper

  • ...Cost balance of a system may be written as follows [18]: X...

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Journal ArticleDOI
TL;DR: In this paper, the principles of thermodynamics via exergy can be used to evaluate energy systems and technologies as well as environmental impact, and current and future perspectives regarding thermodynamics and sustainable development are considered.
Abstract: Achieving sustainable solutions to today’s energy and environmental problems requires long-term planning and actions. Energy issues are particularly prevalent at present and renewable energy resources appear to provide one component of an effective sustainable solution. An understanding of the thermodynamic aspects of sustainable development can help in taking sustainable actions regarding energy. Discussed in this article are possible future energy-utilization patterns and related environmental impacts, potential solutions to current environmental problems, renewable energy technologies and their relations to sustainable development, and how the principles of thermodynamics via exergy can be beneficially used to evaluate energy systems and technologies as well as environmental impact. Throughout the article, current and future perspectives regarding thermodynamics and sustainable development are considered. The results will likely be useful to scientists and engineers as well as decision and policy makers.

288 citations


"Exergoeconomic analysis of a combin..." refers background in this paper

  • ...insight and is more useful in efficiency improvement efforts than energy analysis [2]....

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Journal ArticleDOI
TL;DR: In this article, an efficiency analysis of a cogeneration-based district energy system is presented, accounting for both energy and exergy considerations, for the city of Edmonton, Canada, by the utility Edmonton Power.

261 citations


"Exergoeconomic analysis of a combin..." refers background in this paper

  • ...As a result of this application, the efficiency of energy production can be increased from current levels that vary from 35 to 55% in the conventional power plants to over 90% in the CHP systems [1]....

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Journal ArticleDOI
TL;DR: In this article, the authors investigated the relation between capital costs and thermodynamic losses for devices in modern coal-fired, oil-fired and nuclear electrical generating stations, and showed that a systematic correlation appears to exist between capital cost and exergy loss (total or internal), but not between energy loss or external exergy losses.

244 citations


"Exergoeconomic analysis of a combin..." refers methods in this paper

  • ...For investigating the effect of exergy consumption of kth component of the CHP system to capital cost, Rosen and Dincer [17] suggested a new parameter called ‘the ratio of exergy consumption rate to capital investment cost’ given as follows:...

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Journal ArticleDOI
TL;DR: In this article, the authors present a method for the minimum EPC of cogeneration plants based on the Second Law of Thermodynamics, which is applied as a rational technique to produce electric power and saturated steam.

175 citations


"Exergoeconomic analysis of a combin..." refers background in this paper

  • ...These costs are applicable in feasibility studies, in investment decisions, on comparing alternative techniques and operating conditions, in a cost-effective section of equipment during an installation, an exchange or expansion of an energy system [4]....

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