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Dissertations / Theses on the topic 'Exergy cost'

Author: Grafiati

Published: 1 April 2023

Last updated: 25 July 2025

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1

KHEDR, SOBHY YEHIA MOHAMMED. "Exergy and Exergy Cost Analysis of production systems incorporating renewable energy sources." Doctoral thesis, Università degli Studi di Trieste, 2022. http://hdl.handle.net/11368/3030491.

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Exergy is a thermodynamic quantity capable of measuring the conversion of material and energy flows into comparable terms based on the capacity of such flows to generate mechanical work as a useful effect and identifying and quantifying the thermodynamic inefficiencies of a generic process by means of the exergy destruction term. Because of its properties, an exergy is a convenient tool for the calculation of the global resource consumption of both natural and engineering processes. Therefore, there are different exergy-based approaches. Every exergy-based approach has its advantages and its

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2

Wang, Mengyu. "Model-based Optimisation of Mixed Refrigerant LNG Processes." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/17387.

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Natural gas liquefaction processes are energy and cost intensive. This thesis pursues the optimisation of propane precooled mixed refrigerant (C3MR) processes considering variations in upstream gas well conditions, in order to maximise gas well life. Four objective functions were selected for the design optimisation of the C3MR and dual mixed refrigerant (DMR) processes: 1) total shaft work (W), 2) total capital investment, 3) total annualised cost, and 4) total capital cost of both compressors and main cryogenic heat exchanger (MCHE). Optimisation results show that objective function 4 is mor

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3

Cruz, Flávio Eduardo da. "Produção de hidrogênio em refinarias de petróleo: avaliação exergética e custo de produção." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3150/tde-17082010-123008/.

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O hidrogênio molecular (H2) é um gás muito útil nas indústrias químicas e petroquímicas por conta de sua facilidade de reação com outros elementos químicos. Nas refinarias é o principal insumo no processo de remoção do enxofre de diversos combustíveis como a gasolina e óleo diesel, tendo sua demanda aumentada por conta de novas legislações ambientalmente mais restritivas. O hidrogênio é normalmente encontrado na natureza associado a outros elementos químicos, como a água ou os hidrocarbonetos, sendo necessária a aplicação de processos específicos para sua obtenção. Considerada a rota mais econ

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4

Deshpande, Jaydeep Sanjeev. "Investigations on Solar Powered Direct Contact Membrane Distillation." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/71370.

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Desalination is one of the proposed methods to meet the ever increasing water demands. It can be subdivided into two broad categories, thermal based desalination and electricity based desalination. Multi-effect Distillation (MED), Multi-Stage Flashing (MSF), Membrane Distillation (MD) fall under former and Reverse Osmosis (RO), Electro-Dialysis (ED) fall under later. MD offers an attractive solution for seawater as well as brackish water distillation. It shows highly pure yields, theoretically 100% pure. The overall construction of a MD unit is way simpler than any other desalination systems.

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Boyko, Vladimir, and Jürgen Weber. "Combinations of energy saving measures in pneumatics." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71216.

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Within a production machine, various electromechanical and pneumatic structures can be used for drive tasks. As these drive technologies can often replace each other, the energy efficiency, performance and TCO of pneumatic drives must be permanently enhanced to remain competitive. There is a large number of known measures for the reducing their energy consumption, e.g. minimizing of filling volumes, energy saving circuits etc. However, these measures are mainly considered separately and the possible overall energy saving effect resulting from their combination is rarely taken into account. The

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6

Maraví, Camargo Jesús Edgar. "Análisis termoeconómico de la unidad de compresión de gas natural (UCGN) de una estación de carga de gas natural comprimido (GNC), mediante el método Exergy, Cost, Energy, Mass (EXCEM) para determinar la relación existente entre la eficiencia exérgetica de la UCGN y el costo de producción de GNC." Master's thesis, Pontificia Universidad Católica del Perú, 2018. http://tesis.pucp.edu.pe/repositorio/handle/123456789/13023.

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El elevado costo de los combustibles líquidos en la actualidad y la alta contaminación producto de su combustión, hace necesario buscar nuevas alternativas energéticas. En consecuencia, el gas natural se presenta como la mejor alternativa para reducir costos energéticos con bajo impacto ambiental. Estos fundamentos son los que conllevan a la búsqueda de alternativas de solución al suministro energético diferenciado tal como el Gas Natural Comprimido (GNC). En el presente documento se realiza el estudio Másico, Energético, Exergético y de Costos (EXCEM por sus siglas en Ingles) de una Uni

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7

Das, Barun Kumar. "Optimisation of stand-alone hybrid energy systems for power and thermal loads." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2018. https://ro.ecu.edu.au/theses/2150.

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Stand-alone hybrid energy systems are an attractive option for remote communities without a connection to a main power grid. However, the intermittent nature of solar and other renewable sources adversely affects the reliability with which these systems respond to load demands. Hybridisation, achieved by combining renewables with combustion-based supplementary prime movers, improves the ability to meet electric load requirements. In addition, the waste heat generated from backup Internal Combustion Engines or Micro Gas Turbines can be used to satisfy local heating and cooling loads. As a resul

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8

Combier, Robert. "Risk-informed scenario-based technology and manufacturing evaluation of aircraft systems." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49046.

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In the last half century, the aerospace industry has seen a dramatic paradigm shift from a focus on performance-at-any-cost to product economics and value. The steady increase in product requirements, complexity and global competition has driven aircraft manufacturers to seek broad portfolios of advanced technologies. The development costs and cycle times of these technologies vary widely, and the resulting design environment is one where decisions must be made under substantial uncertainty. Modeling and simulation have recently become the standard practice for addressing these issues; detaile

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9

Matos, Victor Ara?jo Ferreira. "Efeito de uma sess?o de exerc?cio intervalado de alta intensidade e exerc?cio cont?nuo de moderada intensidade sobre marcadores de apetite em homens com obesidade." PROGRAMA DE P?S-GRADUA??O EM EDUCA??O F?SICA, 2017. https://repositorio.ufrn.br/jspui/handle/123456789/24610.

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Pinheiro, Pedro Ivo de Souza. "Efeitos dos exerc?cios aer?bio cont?nuo e intervalado na variabilidade da frequ?ncia card?aca em adultos jovens saud?veis. Ensaio cl?nico aleat?rio." Universidade Federal do Rio Grande do Norte, 2015. http://repositorio.ufrn.br/handle/123456789/20817.

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Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-06-23T21:52:18Z No. of bitstreams: 1 PedroIvoDeSouzaPinheiro_DISSERT.pdf: 1470768 bytes, checksum: 95e0a6d8271caf71927f8658f369b623 (MD5)<br>Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-06-28T21:55:12Z (GMT) No. of bitstreams: 1 PedroIvoDeSouzaPinheiro_DISSERT.pdf: 1470768 bytes, checksum: 95e0a6d8271caf71927f8658f369b623 (MD5)<br>Made available in DSpace on 2016-06-28T21:55:12Z (GMT). No. of bitstreams: 1 PedroIvoDeSouzaPinheiro_DISSERT.pdf: 1470768 bytes, checksum: 95e0a6d8

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Souza, Daniel Costa de. "Efeito de uma sess?o de exerc?cio intervalado de alta intensidade e exerc?cio cont?nuo de moderada intensidade no perfil imunol?gico e inflamat?rio de homens com obesidade." PROGRAMA DE P?S-GRADUA??O EM EDUCA??O F?SICA, 2017. https://repositorio.ufrn.br/jspui/handle/123456789/24756.

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Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-02-15T12:44:59Z No. of bitstreams: 1 DanielCostaDeSouza_DISSERT.pdf: 1625998 bytes, checksum: 824c5486dd368ffb01c3d3a1163f37f1 (MD5)<br>Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-02-19T21:26:44Z (GMT) No. of bitstreams: 1 DanielCostaDeSouza_DISSERT.pdf: 1625998 bytes, checksum: 824c5486dd368ffb01c3d3a1163f37f1 (MD5)<br>Made available in DSpace on 2018-02-19T21:26:44Z (GMT). No. of bitstreams: 1 DanielCostaDeSouza_DISSERT.pdf: 1625998 bytes, checksum: 824c5486dd368ffb01c3d3a

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Vahland, Sören. "Analysis of Parabolic Trough Solar Energy Integration into Different Geothermal Power Generation Concepts." Thesis, KTH, Kraft- och värmeteknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-129093.

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The change in climate as a consequence of anthropogenic activities is a subject ofmajor concerns. In order to reduce the amount of greenhouse gas emissions inthe atmosphere, the utilization of renewable, fossil-free power generationapplications becomes inevitable. Geothermal and solar energy play a major rolein covering the increased demand for renewable energy sources of today’s andfuture’s society. A special focus hereby lies on the Concentrating Solar Powertechnologies and different geothermal concepts. The costs for producingelectricity through Concentrating Solar Power and therefore Parab

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13

Melo, Gertrudes Nunes de. "Estimula??o transcraniana por corrente cont?nua e a flutua??o de for?a em idosas durante exerc?cio isom?trico." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/14615.

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Made available in DSpace on 2014-12-17T14:44:17Z (GMT). No. of bitstreams: 1 GertrudesNM_DISSERT.pdf: 3164686 bytes, checksum: e4de9859908d8c6840498816188878f8 (MD5) Previous issue date: 2013-02-28<br>The fluctuacion force has been increasingly used in studies with elderly as a good predictor of performance and functionality of the motor. However, most analyzes the fluctuation of force in one session. Thus, identifying the minimum amount of sessions needed for familiarization with the fluctuation strength in isometric exercise become relevant. Furthermore, to investigate the effects of apply

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14

Marinheiro, Richardson Correia. "A influ?ncia da estimula??o transcr?niana por corrente cont?nua nos par?metros de dano muscular induzido pelo exerc?cio." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/14617.

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Made available in DSpace on 2014-12-17T14:44:17Z (GMT). No. of bitstreams: 1 RichardsonCM_DISSERT.pdf: 3220294 bytes, checksum: 4681ed76872df1d1bcbb161a02eed855 (MD5) Previous issue date: 2013-07-22<br>A estimula??o transcraniana por corrente cont?nua (ETCC) ? uma t?cnica n?o invasiva que apresenta caracter?sticas anti-fadigante e analg?sica. Com o objetivo de testar seus efeitos sobre a diminui??o da for?a e do aparecimento da dor muscular de in?cio tardio (DMIT), apresentados ap?s um evento de dano muscular induzido pelo exerc?cio (DMIE), foi utilizado um estudo cl?nico de car?ter experime

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15

Farias, Catharinne Ang?lica Carvalho de. "Custos e benef?cios de um programa de exerc?cio aer?bios na doen?a pulmonar obstrutiva cr?nica: ensaio clin?co aleat?rio controlado." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/16730.

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Made available in DSpace on 2014-12-17T15:16:17Z (GMT). No. of bitstreams: 1 CatharinneACF_DISSERT.pdf: 1480127 bytes, checksum: c5db0b97f06f1894f01c49765400729e (MD5) Previous issue date: 2012-07-06<br>Pulmonary Rehabilitation, especially due to aerobic exercise, positive impact in reducing morbidity/mortality of patients with COPD, however the economic impact with costs of implementing simple programs of aerobic exercise are scarce. This is a blind randomized clinical trials, which aimed to evaluate the costs and benefits of a simple program of aerobic exercise in individuals with COPD,

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16

Felismino, Amanda Soares. "Reabilita??o card?aca na insufici?ncia card?aca cr?nica: efeitos de 12 semanas de treinamento intervalado x cont?nuo na fun??o cardiopulmonar e qualidade de vida." Universidade Federal do Rio Grande do Norte, 2015. http://repositorio.ufrn.br/handle/123456789/21232.

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Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-16T22:30:55Z No. of bitstreams: 1 AmandaSoaresFelismino_DISSERT.pdf: 1932768 bytes, checksum: e56122cb8f4fe9966c79dd1cada11d94 (MD5)<br>Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-08-23T22:09:58Z (GMT) No. of bitstreams: 1 AmandaSoaresFelismino_DISSERT.pdf: 1932768 bytes, checksum: e56122cb8f4fe9966c79dd1cada11d94 (MD5)<br>Made available in DSpace on 2016-08-23T22:09:58Z (GMT). No. of bitstreams: 1 AmandaSoaresFelismino_DISSERT.pdf: 1932768 bytes, checksum: e56122cb8f4fe9

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Tavares, Adilson de Lima. "O impacto dos custos n?o-gerenci?veis na determina??o das tarifas de energia el?trica: um estudo nas companhias distribuidoras do nordeste que tiveram revis?o tarif?ria nos exerc?cios de 2003 e 2004." Universidade Federal do Rio Grande do Norte, 2006. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18178.

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Made available in DSpace on 2014-12-17T15:53:14Z (GMT). No. of bitstreams: 1 AdilsonLT.pdf: 357423 bytes, checksum: 891f79b8b20c98062f6b6425fdf20178 (MD5) Previous issue date: 2006-06-09<br>This work presents results derived from a study related to impact on non-controllable costs in the determination of energy taxes. This is done analyzing tax review practiced by concessionaries responsible for the distribution of electrical energy located in the Northeastern Region of Brazil, between 2003 and 2004. This Region was chosen as a study area due to the researcher s expectation in congregating

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18

Gaudreau, Kyrke. "Exergy analysis and resource accounting." Thesis, 2009. http://hdl.handle.net/10012/4507.

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The objective of this thesis is to establish the utility and limitations of using exergy (a thermodynamic measure of energy quality, or ability to perform work) as a resource consumption metric, and to investigate what role exergy may play in resource consumption decision-making. To do so, this thesis assessed three exergy-based resource consumption methodologies: the Exergy Replacement Cost; Eco-exergy; and Emergy. Furthermore, fundamental properties of exergy were revisited, including the exergy reference state, and the derivations of both concentration and non-flow exergy. The results

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19

Ng, Cheng Hin Jason. "Life Cycle Optimization of a Residential Solar Combisystem for Minimum Cost, Energy Use and Exergy Destroyed." Thesis, 2013. http://spectrum.library.concordia.ca/975117/1/Ng%2DCheng%2DHin_MASc_S2013.pdf.

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This thesis presents the optimization of a model of a solar combisystem installed in an energy efficient house in the climate of Montreal, Quebec. The work presented in the thesis includes: 1) A methodology for the optimization of a solar collector system based on four different objective functions; 2) The development of a computer-based platform for combisystem optimization; 3) Recommendations for the optimal configurations of a solar combisystem to minimize life cycle cost, life cycle energy use and life cycle exergy destroyed; and 4) The analysis of the performance of the hybrid stochastic,

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20

Orhan, Mehmet Fatih. "Energy, exergy and cost analyses of nuclear-based hydrogen production via thermochemical water decomposition using a copper-chlorine (Cu-CI) cycle." Thesis, 2008. http://hdl.handle.net/10155/8.

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In this thesis the Copper-Chlorine (Cu-CI) thermochemical cycle and its components as well as operational and environmental conditions are defined, and a comprehensive thermodynamic analysis of a Cu-CI thermochemical cycle, including the relevant chemical reactions, is performed. Also the performance of each component/process is evaluated through energy and exergy efficiencies. Various parametric studies on energetic and exergetic aspects with variable reaction and reference-environment temperatures are carried out. A detailed analysis of the general methodology of cost estimation for the p

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21

Ludwig, Mario. "Analysis of hydrogen-based energy storage pathways." 2018. https://tud.qucosa.de/id/qucosa%3A72945.

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Hydrogen is considered to become a main energy vector in sustainable energy systems to store large amounts of intermittent wind and solar power. In this work, exergy efficiency and cost analyses are conducted to compare pathways of hydrogen generation (PEM, alkaline or solid oxide electrolysis), storage (compression, liquefaction or methanation), transportation (trailer or pipeline) and utilization (PEMFC, SOFC or combined cycle gas turbine). All processes are simulated with respect to their full and part-load efficiencies and resulting costs. Furthermore, load profiles are estimated to simula

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22

Chen, Roung Shoun, and 陳榮舜. "The Study of Total Operational Cost with Different Fuel Prices in the Cogeneration System and the Exergy Analysis of Air-Conditioner without Condensed Water." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/83024353324262864051.

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碩士<br>大同大學<br>機械工程研究所<br>89<br>PART ONE :The Study of Total Operational Cost with Different Fuel Prices in the Cogeneration System The thesis deals with cogeneration system of extraction-type steam turbine generator. Under taking into account of operational cost and enthalpy for fuel, it is an interesting place that how the cost is obtained as minimum by mixing coal and oil while cogeneration system is running. Based on the real design and industrial application, the attempt of the investment is to find the I/O curve for boiler and steam turbine from output data

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Abuadala, Abdussalam Goma. "Investigation of sustainable hydrogen production from steam biomass gasification." Diss., 2010. http://hdl.handle.net/10155/130.

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Hydrogen is a by-product of the gasification process and it is environmentally friendly with respect to pollution and emission issues when it is derived from a CO2-neutral resource such as biomass. It is an energy carrier fuel and has flexibility to convert efficiently to other energy forms to be used in different energy applications like fuel cells. The proposed research presents literature on previous gasification studies regarding hydrogen production from biomass and updates the obtained results. The main objectives of the thesis are: a) to study hydrogen production via steam biomass (sawdu

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24

LEONCINI, LORENZO. "Analisi degli scenari energetici europei e sviluppo di un criterio di valutazione exergetica del sistema edificio." Doctoral thesis, 2014. http://hdl.handle.net/2158/869321.

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ITALIANO - La valutazione energetica di un edificio ha lo scopo di quantificare le risorse energetiche impegnate dall’edificio per alimentare i fabbisogni delle utenze, in rapporto a criteri di natura energetica/ambientale/economica. I criteri di valutazione attualmente impiegati sono: energia primaria, emissioni di CO2, costi, energia finale. L’uso di energia a livello di edificio è messo in relazione rispettivamente con le risorse energetiche primarie impegnate, con le emissioni di gas a effetto serra e con gli oneri gestionali. In una visione centrata sulla combinazione tra catena energetic

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Shamoushaki, Moein. "From economic to exergo-economic modeling of geothermal power plant." Doctoral thesis, 2022. http://hdl.handle.net/2158/1259368.

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Economic assessment of power plants is one of the most critical steps before starting the project. Nowadays, investors and governments are looking for energy systems with lower investment costs leading to a shorter payback period. In the present research, economic and exergo-economic analysis of geothermal power plants has been conducted. This study has been divided into four different sections, (I) geothermal well drilling cost model generation, (II) power plant's equipment cost model generation, (III) entire geothermal power plants' economic model generation, and (IV) exergo-economic analysi

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