The Experts below are selected from a list of 132 Experts worldwide ranked by ideXlab platform
Arif Hepbasli - One of the best experts on this subject based on the ideXlab platform.
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determination of optimum pipe diameter along with energetic and exergetic evaluation of geothermal district heating systems modeling and application
Energy and Buildings, 2008Co-Authors: Yildiz Kalinci, Arif Hepbasli, Ismail H TavmanAbstract:Abstract This study deals with determination of optimum pipe diameters based on economic analysis and the performance analysis of geothermal district heating systems along with pipelines using energy and Exergy analysis methods. In this regard, the Dikili geothermal district heating system (DGDHS) in Izmir, Turkey is taken as an application place, to which the methods presented here are applied with some assumptions. The system mainly consists of three cycles, namely (i) the transportation network, (ii) the Danistay region, and (iii) the Bariskent region. The thermal capacities of these regions are 21,025 and 7975 kW, respectively, while the supply (Flow) and return temperature values of those are 80 and 50 °C, respectively. Based upon the assessment of the transportation network using the optimum diameter analysis method, minimum cost is calculated to be US$ 561856.906 year −1 for a nominal diameter of DN 300. The Exergy destructions in the overall DGDHS are quantified and illustrated using Exergy Flow Diagram. Furthermore, both energy and Exergy Flow Diagrams are exhibited for comparison purposes. It is observed through analysis that the Exergy destructions in the system particularly take place due to the Exergy of the thermal water (geothermal fluid) reinjected, the heat exchanger losses, and all pumps losses, accounting for 38.77%, 10.34%, 0.76% of the total Exergy input to the DGDHS. Exergy losses are also found to be 201.12817 kW and 1.94% of the total Exergy input to the DGDHS for the distribution network. For the system performance analysis and improvement, both energy and Exergy efficiencies of the overall DGDHS are investigated, while they are determined to be 40.21% and 50.12%, respectively.
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determination of optimum pipe diameter along with energetic and exergetic evaluation of geothermal district heating systems modeling and application
Energy and Buildings, 2008Co-Authors: Yildiz Kalinci, Arif Hepbasli, Ismail H TavmanAbstract:Abstract This study deals with determination of optimum pipe diameters based on economic analysis and the performance analysis of geothermal district heating systems along with pipelines using energy and Exergy analysis methods. In this regard, the Dikili geothermal district heating system (DGDHS) in Izmir, Turkey is taken as an application place, to which the methods presented here are applied with some assumptions. The system mainly consists of three cycles, namely (i) the transportation network, (ii) the Danistay region, and (iii) the Bariskent region. The thermal capacities of these regions are 21,025 and 7975 kW, respectively, while the supply (Flow) and return temperature values of those are 80 and 50 °C, respectively. Based upon the assessment of the transportation network using the optimum diameter analysis method, minimum cost is calculated to be US$ 561856.906 year −1 for a nominal diameter of DN 300. The Exergy destructions in the overall DGDHS are quantified and illustrated using Exergy Flow Diagram. Furthermore, both energy and Exergy Flow Diagrams are exhibited for comparison purposes. It is observed through analysis that the Exergy destructions in the system particularly take place due to the Exergy of the thermal water (geothermal fluid) reinjected, the heat exchanger losses, and all pumps losses, accounting for 38.77%, 10.34%, 0.76% of the total Exergy input to the DGDHS. Exergy losses are also found to be 201.12817 kW and 1.94% of the total Exergy input to the DGDHS for the distribution network. For the system performance analysis and improvement, both energy and Exergy efficiencies of the overall DGDHS are investigated, while they are determined to be 40.21% and 50.12%, respectively.
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effect of reference state on the performance of energy and Exergy evaluation of geothermal district heating systems balcova example
Building and Environment, 2006Co-Authors: Leyla Ozgener, Arif Hepbasli, Ibrahim DincerAbstract:In this paper, we undertake a parametric study to investigate how varying reference temperature from 0 to 25 °C will affect the energy and Exergy efficiencies of the Balcova geothermal district heating system (BGDHS) and develop two significant correlations (with a correlation coefficient of 0.99) that can be used for predicting the efficiencies. The Exergy losses in the overall BGDHS are quantified and illustrated using Exergy Flow Diagram particularly for a reference temperature of 11.4 °C for comparison purposes. This reference temperature is taken as an average value of the ambient temperatures measured during the past 5 years for the day of 2nd January to reflect the actual situation. The results show that the Exergy losses within the system occur mainly due to the losses in pumps, heat exchangers, reinjection sections of the geothermal water back into reservoir and pipeline, and account for 1.75%, 8.84%, 14.20%, and 28.69%, respectively. In addition, we study energy and Exergy efficiencies to determine the possibilities to improve the system, and energy and Exergy efficiencies of the system are found to be 42.36% and 46.55%, respectively, for 2nd January 2004.
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Energy and Exergy analysis of kizildere geothermal power plant, Turkey
Energy Sources Part A: Recovery Utilization and Environmental Effects, 2006Co-Authors: Harun Kemal Ozturk, Oner Atalay, Ahmet Yilanci, Arif HepbasliAbstract:Exergy analysis is important for all energy resource utilization since it is part of energy analysis. In recent years, Exergy analysis has been widely used in the design and performance evaluation of thermal systems. In this study, an Exergy assessment and modeling of geothermal power plants is presented. A comprehensive case study is conducted in the Kizildere Geothermal Power Plant (KGPP) in Denizli, Turkey. Using the plant data, an evaluation of the KGPP performance, energy and Exergy efficiencies, and Exergy destructions in each component of the plant as well as in the whole plant are quantified and illustrated using an Exergy Flow Diagram. In addition, a parametric study on the effect of varying reference state properties on the Exergy efficiencies of the KGPP is conducted to find the optimum performance and operating conditions. Copyright © Taylor & Francis Group, LLC.
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Energy and Exergy analysis of geothermal district heating systems: an application
Building and Environment, 2005Co-Authors: Leyla Ozgener, Arif Hepbasli, Ibrahim DincerAbstract:In this study we present an energy and Exergy assessment and modeling of geothermal district heating systems for their system analysis, performance evaluation and optimization. A comprehensive case study is conducted in Balcova geothermal district heating system (BGDHS) in Izmir, Turkey and actual thermal data are collected and employed for analysis. Using actual system data, an assessment of the district heating system performance, energy and Exergy efficiencies, and Exergy destructions in the system is conducted in this regard. The Exergy destructions in the overall BGDHS are quantified and illustrated using Exergy Flow Diagram. Furthermore, both energy and Exergy Flow Diagrams are exhibited for comparison purposes. It is observed through analysis that the Exergy destructions in the system particularly take place as the Exergy of the fluid lost in the pumps, the heat exchanger losses, the Exergy of the thermal water (geothermal fluid) reinjected and the natural direct discharge (hot water distribution losses) of the system, accounting for 1.64%, 8.57%, 14.84% and 28.96%, respectively, of the total Exergy input to the BGDHS. For system performance analysis and improvement, both energy and Exergy efficiencies of the overall BGDHS are investigated and are determined to be 41.9% and 46%, respectively.
Ismail H Tavman - One of the best experts on this subject based on the ideXlab platform.
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determination of optimum pipe diameter along with energetic and exergetic evaluation of geothermal district heating systems modeling and application
Energy and Buildings, 2008Co-Authors: Yildiz Kalinci, Arif Hepbasli, Ismail H TavmanAbstract:Abstract This study deals with determination of optimum pipe diameters based on economic analysis and the performance analysis of geothermal district heating systems along with pipelines using energy and Exergy analysis methods. In this regard, the Dikili geothermal district heating system (DGDHS) in Izmir, Turkey is taken as an application place, to which the methods presented here are applied with some assumptions. The system mainly consists of three cycles, namely (i) the transportation network, (ii) the Danistay region, and (iii) the Bariskent region. The thermal capacities of these regions are 21,025 and 7975 kW, respectively, while the supply (Flow) and return temperature values of those are 80 and 50 °C, respectively. Based upon the assessment of the transportation network using the optimum diameter analysis method, minimum cost is calculated to be US$ 561856.906 year −1 for a nominal diameter of DN 300. The Exergy destructions in the overall DGDHS are quantified and illustrated using Exergy Flow Diagram. Furthermore, both energy and Exergy Flow Diagrams are exhibited for comparison purposes. It is observed through analysis that the Exergy destructions in the system particularly take place due to the Exergy of the thermal water (geothermal fluid) reinjected, the heat exchanger losses, and all pumps losses, accounting for 38.77%, 10.34%, 0.76% of the total Exergy input to the DGDHS. Exergy losses are also found to be 201.12817 kW and 1.94% of the total Exergy input to the DGDHS for the distribution network. For the system performance analysis and improvement, both energy and Exergy efficiencies of the overall DGDHS are investigated, while they are determined to be 40.21% and 50.12%, respectively.
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determination of optimum pipe diameter along with energetic and exergetic evaluation of geothermal district heating systems modeling and application
Energy and Buildings, 2008Co-Authors: Yildiz Kalinci, Arif Hepbasli, Ismail H TavmanAbstract:Abstract This study deals with determination of optimum pipe diameters based on economic analysis and the performance analysis of geothermal district heating systems along with pipelines using energy and Exergy analysis methods. In this regard, the Dikili geothermal district heating system (DGDHS) in Izmir, Turkey is taken as an application place, to which the methods presented here are applied with some assumptions. The system mainly consists of three cycles, namely (i) the transportation network, (ii) the Danistay region, and (iii) the Bariskent region. The thermal capacities of these regions are 21,025 and 7975 kW, respectively, while the supply (Flow) and return temperature values of those are 80 and 50 °C, respectively. Based upon the assessment of the transportation network using the optimum diameter analysis method, minimum cost is calculated to be US$ 561856.906 year −1 for a nominal diameter of DN 300. The Exergy destructions in the overall DGDHS are quantified and illustrated using Exergy Flow Diagram. Furthermore, both energy and Exergy Flow Diagrams are exhibited for comparison purposes. It is observed through analysis that the Exergy destructions in the system particularly take place due to the Exergy of the thermal water (geothermal fluid) reinjected, the heat exchanger losses, and all pumps losses, accounting for 38.77%, 10.34%, 0.76% of the total Exergy input to the DGDHS. Exergy losses are also found to be 201.12817 kW and 1.94% of the total Exergy input to the DGDHS for the distribution network. For the system performance analysis and improvement, both energy and Exergy efficiencies of the overall DGDHS are investigated, while they are determined to be 40.21% and 50.12%, respectively.
Enrico Sciubba - One of the best experts on this subject based on the ideXlab platform.
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New Insights from Econometric Data: An Extended Exergy Analysis (EEA) of the Italian System, 2013–2017
Proceedings, 2020Co-Authors: Alfonso Biondi, Enrico SciubbaAbstract:In the recent past, several examples of the application of Exergy Analysis (ExA) to Very Large Complex Systems, including entire countries, have been published, and it can be fairly said that—while the goals of the individual authors were completely consistent—the results, the conclusions and the recommendations diverge. There are several contingent reasons for this, but the underlying problem is that a purely thermodynamic analysis cannot reproduce the complex influence that monetary, social, political and technological factors have on the purely “material” or “energetic” streams. Clearly, ExA represents a substantial improvement with respect to the “Material and Energy Balance Reports” published annually by most industrialized countries, because the Exergy Flow Diagram unequivocally demonstrates how and at what penalty the primary Exergy inFlow (fossil fuels, renewables, ores, harvested food and other primary goods) is transformed into final energy, such as diesel fuel, electricity or other commodities. The issue here is, though, that the so-called Externalities (Capital, Labor and Environmental Effects) are, in spite of some opinion to the contrary, completely left out of the picture. It turns out though that ExA can be extended by including the Exergy equivalents of the externalities. The theory is called Extended Exergy Accounting (EEA) as a reminder of the inclusion of monetary, labor and environmental “Exergy costs” in the global budget. The scope of the study presented in this paper is twofold: First, the introduction of a novel approach based on the exploitation of a very disaggregated dataset, in order to perform the EEA of a whole country; second, the analysis of the results of the application of the method to the Italian society, over a five-year (2013–2017) window of observation, to extract new insights that could be useful to critically assess the trend of the Exergy destruction of Italy vs. that of the GDP.
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Exergy Budget, Sustainability And Economic Indicators For The Italian System From 2007 To 2017-A Critical Analysis.
2020Co-Authors: Alfonso Biondi, Enrico SciubbaAbstract:In the recent past, several examples of the application of Exergy Analysis (ExA) to entire Countries have been published, and it can be fairly said that -while the goals of the individual Authors were completely consistent- the results, the conclusions and the recommendations seem to diverge. There are several contingent reasons for this, but the underlying problem is that a purely thermodynamic analysis does not represent the complex influence that monetary, social, political and technological factors have on the purely “material” or “energetic” streams. Clearly, ExA represents a substantial improvement with respect to the “Material and Energy Balance Reports” published annually by most industrialized Countries, because the Exergy Flow Diagram unequivocally demonstrates how and at what penalty the primary Exergy inFlow (fossil fuels, renewables, ores, harvested food and feed)is transformed into final energy, such as diesel fuel, electricity or other commodities. The issue here is that the so-called Externalities (Capital, Labour and Environmental Effects) are, in spite of some opinion to the contrary, completely left out of the picture. It turns out though that ExA can be extended by including the Exergy equivalents of the externalities: the theory is called Extended Exergy Accounting (EEA) as a reminder of the inclusion of monetary, labour and environmental “Exergy costs” in the global budget. Scope of the study presented in this paper is twofold: first, to discuss in a formally structured fashion a general procedure for performing the EEA of a “System Country”; second, to inspect the results to identify possible correlations between the “Exergy efficiency” of a Country -i.e., its ability to exploit the incoming Exergy flux with the minimum amount of losses (material, energy waste and irreversible Exergy destruction)- and some of the most popular indicators used to assess the “degree of sustainability” of a system, bearing in mind a time frame of ten years (2007-2017).As an efficiency indicator we use the Exergy Footprint, a measure of the global primary Exergy consumption of a system, which turns out to be also a very useful indicator of the “degree of unsustainability” of a Country. Our results confirm that the Gross National Product, already criticized for not representing the reality of the economy of a Country, is very weakly -if ever- correlated with the EF in the decade of observation. Other indicators display different degrees of correlation with the EF, and the reasons are critically analyzed.
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Exergy analysis of hypersonic propulsion systems : Performance comparison of two different scramjet configurations at cruise conditions
Energy, 2008Co-Authors: Valentina Amati, Claudio Bruno, Domenico Simone, Enrico SciubbaAbstract:Abstract An Exergy analysis of an advanced hypersonic vehicle, a scramjet, is presented and discussed with a twofold scope. First, to perfect the Exergy approach to the design and optimization of aerospace propulsion systems: the Exergy Flow Diagram can provide aircraft engineers and system designers with additional insight on the avoidable and unavoidable systemic losses, thus allowing for effective design improvements. Second, to explore limits and merits of two different fuelling solutions for a scramjet-powered aircraft. Two configurations are critically compared: one with a direct H 2 injection and one with an on-board kerosene reformer. The present study treats the scramjet-propelled plane as a Large Complex Energy System (“LCES”), and applies system balances (mass, energy, Exergy) to calculate the relevant losses. The Exergy analysis confirms that the introduction of an on-board reformer is advantageous from the point of view of the thrust efficiency (with a gain of 3 percentage points with respect to the H 2 -fuelled engine) and, more importantly, from the point of view of a more correct use of the available resources (the fuel in the tanks). Another advantage of the on-board reforming is that the higher value of the volumetric-specific impulse allows for reducing the fuel tank size. All calculations have been performed with CAMEL ® , a modular simulator for energy conversion processes conceived and developed in the last decade by the Authors’ group at the Mechanical and Aeronautical Engineering Department of the University of Roma 1 “La Sapienza”. Some additional component models have been studied and implemented, and a specific tool dedicated to the analysis of propulsion systems has been created and integrated in the simulation package.
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On the Internalization of Monetary and Environmental Externalities in the Exergetic Analysis of Energy Conversion Systems
Advanced Energy Systems, 2005Co-Authors: Enrico SciubbaAbstract:The article describes and discusses to some detail a method for computing the cost of a commodity in terms of its resource-base equivalent value (as opposed to its monetary cost). The method is called the extended Exergy accounting technique (EEA), and its proper application enables the analyst to perform more complete and meaningful assessments of a complex production system, including of course energy conversion processes. The novelty as well as the decisive advantage of EEA consists in its being entirely and uniformly resource-based: the so-called externalities (labor, capital and environmental remediation costs) are included in the system balance by means of their equivalent exergetic fluxes, which represent the gross amount of primary Exergy required to locally generate the specified amount of capital, the specified number of work-hours, or to reduce the emissions below a certain specified level. EEA owes some of its structural formalism to Sraffa’s “network” representation of the economic production of commodities by means of other commodities, which it extends by accounting for the unavoidable energy dissipation in every productive chain. The method has also borrowed several definitions, concepts and procedures from Georgescu-Roegen’s classical work on the economic implications of irreversibility on production chains, from Daly’s pioneering work in resource-oriented economics and from Szargut’s “cumulative Exergy content” method. The representation of a general energy conversion process by means of its extended Exergy Flow Diagram is discussed in this article, and it is argued that some of the issues that are difficult to address with a purely monetary approach can be properly resolved by EEA. It is also shown how EEA, being intrinsically “localized” both in time and in space, can account for the non-uniformity of societal conditions without the need of patching the theory with artificial features external to its paradigm. In the conclusions, some indications are given as to the possibility of using the extended Exergy accounting technique to supplement and substantially improve Thermo-Economics on one side and Life-Cycle Assessment or Environmental Footprint Analysis on the other side.Copyright © 2005 by ASME
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from engineering economics to extended Exergy accounting a possible path from monetary to resource based costing
Journal of Industrial Ecology, 2004Co-Authors: Enrico SciubbaAbstract:The article describes the extended Exergy accounting technique (EEA), a novel method for computing the cost of a commodity based on its resource-base equivalent value (as opposed to its monetary cost) that enables the analyst to perform more complete and meaningful assessments of a complex system. The claim made here is that the novelty, as well as the decisive advantage, of EEA consists in its being entirely and uniformly resource based, thanks to the inclusion in the system balance of exergetic fluxes equivalent to labor, capital, and environmental remediation costs. In this respect, EEA owes some of its structural formalism to Sraffa's network representation of the economic production of commodities by means of other commodities, which it extends by accounting for the unavoidable energy dissipation in the productive chain (whose economic implications were first discussed by Georgescu-Roegen), to Daly's pioneering work in resource-oriented economics, and to Szargut's cumulative Exergy consumption method. The representation of a process by means of its extended Exergy Flow Diagram is discussed in this article, and it is argued that some of the issues that are difficult to address with a purely monetary approach can be properly resolved by EEA. The main shortcomings of EEA are its intrinsic locality in time and space: They are demonstrated to be necessary and not casual consequences of its very definition and of the nonuniformity of societal conditions. In the conclusions, some indications are given as to the possibility of using this new technique to complement (and extend) other current tools, such as life-cycle assessment or environmental footprint analysis.
Ibrahim Dincer - One of the best experts on this subject based on the ideXlab platform.
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effect of reference state on the performance of energy and Exergy evaluation of geothermal district heating systems balcova example
Building and Environment, 2006Co-Authors: Leyla Ozgener, Arif Hepbasli, Ibrahim DincerAbstract:In this paper, we undertake a parametric study to investigate how varying reference temperature from 0 to 25 °C will affect the energy and Exergy efficiencies of the Balcova geothermal district heating system (BGDHS) and develop two significant correlations (with a correlation coefficient of 0.99) that can be used for predicting the efficiencies. The Exergy losses in the overall BGDHS are quantified and illustrated using Exergy Flow Diagram particularly for a reference temperature of 11.4 °C for comparison purposes. This reference temperature is taken as an average value of the ambient temperatures measured during the past 5 years for the day of 2nd January to reflect the actual situation. The results show that the Exergy losses within the system occur mainly due to the losses in pumps, heat exchangers, reinjection sections of the geothermal water back into reservoir and pipeline, and account for 1.75%, 8.84%, 14.20%, and 28.69%, respectively. In addition, we study energy and Exergy efficiencies to determine the possibilities to improve the system, and energy and Exergy efficiencies of the system are found to be 42.36% and 46.55%, respectively, for 2nd January 2004.
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Energy and Exergy analysis of geothermal district heating systems: an application
Building and Environment, 2005Co-Authors: Leyla Ozgener, Arif Hepbasli, Ibrahim DincerAbstract:In this study we present an energy and Exergy assessment and modeling of geothermal district heating systems for their system analysis, performance evaluation and optimization. A comprehensive case study is conducted in Balcova geothermal district heating system (BGDHS) in Izmir, Turkey and actual thermal data are collected and employed for analysis. Using actual system data, an assessment of the district heating system performance, energy and Exergy efficiencies, and Exergy destructions in the system is conducted in this regard. The Exergy destructions in the overall BGDHS are quantified and illustrated using Exergy Flow Diagram. Furthermore, both energy and Exergy Flow Diagrams are exhibited for comparison purposes. It is observed through analysis that the Exergy destructions in the system particularly take place as the Exergy of the fluid lost in the pumps, the heat exchanger losses, the Exergy of the thermal water (geothermal fluid) reinjected and the natural direct discharge (hot water distribution losses) of the system, accounting for 1.64%, 8.57%, 14.84% and 28.96%, respectively, of the total Exergy input to the BGDHS. For system performance analysis and improvement, both energy and Exergy efficiencies of the overall BGDHS are investigated and are determined to be 41.9% and 46%, respectively.
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thermo mechanical Exergy analysis of balcova geothermal district heating system in izmir turkey
Journal of Energy Resources Technology-transactions of The Asme, 2004Co-Authors: Leyla Ozgener, Arif Hepbasli, Ibrahim DincerAbstract:This paper deals with a thermo-mechanical Exergy analysis of Balcova Geothermal District Heating System (BGDHS) in Izmir, Turkey using actual system data and an assessment of the district heating system performance, energy and Exergy efficiencies, and Exergy destructions. The Exergy destructions in the overall BGDHS are quantified and illustrated using an Exergy Flow Diagram. Also, both energy and Exergy Flow Diagrams are compared. The Exergy destructions in the system particularly occurs in terms of the Exergy of the fluid lost in the pumps, the heat exchanger losses, the Exergy of the thermal water (geothermal fluid) reinjected and the natural direct discharge of the system, accounting for 3.06%, 7.24%, 22.66% and 24.1%, respectively of the total Exergy input to the BGDHS. Both energy and Exergy efficiencies of the overall BGDHS are investigated for system performance analysis and improvement and are determined to be 37.60% and 42.94%, respectively.
Yildiz Kalinci - One of the best experts on this subject based on the ideXlab platform.
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determination of optimum pipe diameter along with energetic and exergetic evaluation of geothermal district heating systems modeling and application
Energy and Buildings, 2008Co-Authors: Yildiz Kalinci, Arif Hepbasli, Ismail H TavmanAbstract:Abstract This study deals with determination of optimum pipe diameters based on economic analysis and the performance analysis of geothermal district heating systems along with pipelines using energy and Exergy analysis methods. In this regard, the Dikili geothermal district heating system (DGDHS) in Izmir, Turkey is taken as an application place, to which the methods presented here are applied with some assumptions. The system mainly consists of three cycles, namely (i) the transportation network, (ii) the Danistay region, and (iii) the Bariskent region. The thermal capacities of these regions are 21,025 and 7975 kW, respectively, while the supply (Flow) and return temperature values of those are 80 and 50 °C, respectively. Based upon the assessment of the transportation network using the optimum diameter analysis method, minimum cost is calculated to be US$ 561856.906 year −1 for a nominal diameter of DN 300. The Exergy destructions in the overall DGDHS are quantified and illustrated using Exergy Flow Diagram. Furthermore, both energy and Exergy Flow Diagrams are exhibited for comparison purposes. It is observed through analysis that the Exergy destructions in the system particularly take place due to the Exergy of the thermal water (geothermal fluid) reinjected, the heat exchanger losses, and all pumps losses, accounting for 38.77%, 10.34%, 0.76% of the total Exergy input to the DGDHS. Exergy losses are also found to be 201.12817 kW and 1.94% of the total Exergy input to the DGDHS for the distribution network. For the system performance analysis and improvement, both energy and Exergy efficiencies of the overall DGDHS are investigated, while they are determined to be 40.21% and 50.12%, respectively.
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determination of optimum pipe diameter along with energetic and exergetic evaluation of geothermal district heating systems modeling and application
Energy and Buildings, 2008Co-Authors: Yildiz Kalinci, Arif Hepbasli, Ismail H TavmanAbstract:Abstract This study deals with determination of optimum pipe diameters based on economic analysis and the performance analysis of geothermal district heating systems along with pipelines using energy and Exergy analysis methods. In this regard, the Dikili geothermal district heating system (DGDHS) in Izmir, Turkey is taken as an application place, to which the methods presented here are applied with some assumptions. The system mainly consists of three cycles, namely (i) the transportation network, (ii) the Danistay region, and (iii) the Bariskent region. The thermal capacities of these regions are 21,025 and 7975 kW, respectively, while the supply (Flow) and return temperature values of those are 80 and 50 °C, respectively. Based upon the assessment of the transportation network using the optimum diameter analysis method, minimum cost is calculated to be US$ 561856.906 year −1 for a nominal diameter of DN 300. The Exergy destructions in the overall DGDHS are quantified and illustrated using Exergy Flow Diagram. Furthermore, both energy and Exergy Flow Diagrams are exhibited for comparison purposes. It is observed through analysis that the Exergy destructions in the system particularly take place due to the Exergy of the thermal water (geothermal fluid) reinjected, the heat exchanger losses, and all pumps losses, accounting for 38.77%, 10.34%, 0.76% of the total Exergy input to the DGDHS. Exergy losses are also found to be 201.12817 kW and 1.94% of the total Exergy input to the DGDHS for the distribution network. For the system performance analysis and improvement, both energy and Exergy efficiencies of the overall DGDHS are investigated, while they are determined to be 40.21% and 50.12%, respectively.