Performance enhancement and multi-objective optimization of a double-flash binary geothermal power plant

Initiating cost-effective and technological frameworks to exploit geothermal energy is a fundamental incentive for scientists and engineers; in this regard, flash-binary geothermal power plants are plausible for high-temperature geothermal resources. Stemming from an in-depth literature review, it i...

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Autores principales:	Towhid Parikhani, Mostafa Delpisheh, Maghsoud Abdollahi Haghghi, Shahriyar Ghazanfari Holagh, Hassan Athari
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Double-flash binary geothermal Ejector-expander Modification Economic Optimization Renewable energy sources TJ807-830 Agriculture (General) S1-972
Acceso en línea:	https://doaj.org/article/44e55485fdc5497bacf98720f5997bcf
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id	oai:doaj.org-article:44e55485fdc5497bacf98720f5997bcf
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spelling	oai:doaj.org-article:44e55485fdc5497bacf98720f5997bcf2021-12-02T05:04:52ZPerformance enhancement and multi-objective optimization of a double-flash binary geothermal power plant2772-427110.1016/j.nexus.2021.100012https://doaj.org/article/44e55485fdc5497bacf98720f5997bcf2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2772427121000127https://doaj.org/toc/2772-4271Initiating cost-effective and technological frameworks to exploit geothermal energy is a fundamental incentive for scientists and engineers; in this regard, flash-binary geothermal power plants are plausible for high-temperature geothermal resources. Stemming from an in-depth literature review, it is conspicuous that the thermal and exergy losses of the expansion process are significant. To shed light on this matter, an ejector-expander is integrated into the conventional expansion valve of a double-flash binary geothermal power plant to enhance the plant performance. The feasibility of the contrived notion is scrutinized from energy, exergy, thermal, and cost balance standpoints and results converged in the increase in turbine output power, energy efficiency, and exergy efficiency of approximately 7.66%, 7.64%, and 7.69%, respectively. Among all components, the condenser constituted a 45.06% share of the overall exergy destruction, whilst the turbine had an exergy destruction ratio of 22.07%. An intensive parametric study is implemented that outlined that the turbine output power, energy efficiency, and exergy efficiency of the ejector-expander power system have a maximum in a specified pressure value of the first and second separator. Another merit was a marked decrease in the unit cost of power when ejector-expander is employed.Towhid ParikhaniMostafa DelpishehMaghsoud Abdollahi HaghghiShahriyar Ghazanfari HolaghHassan AthariElsevierarticleDouble-flash binary geothermalEjector-expanderModificationEconomicOptimizationRenewable energy sourcesTJ807-830Agriculture (General)S1-972ENEnergy Nexus, Vol 2, Iss , Pp 100012- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Double-flash binary geothermal Ejector-expander Modification Economic Optimization Renewable energy sources TJ807-830 Agriculture (General) S1-972
spellingShingle	Double-flash binary geothermal Ejector-expander Modification Economic Optimization Renewable energy sources TJ807-830 Agriculture (General) S1-972 Towhid Parikhani Mostafa Delpisheh Maghsoud Abdollahi Haghghi Shahriyar Ghazanfari Holagh Hassan Athari Performance enhancement and multi-objective optimization of a double-flash binary geothermal power plant
description	Initiating cost-effective and technological frameworks to exploit geothermal energy is a fundamental incentive for scientists and engineers; in this regard, flash-binary geothermal power plants are plausible for high-temperature geothermal resources. Stemming from an in-depth literature review, it is conspicuous that the thermal and exergy losses of the expansion process are significant. To shed light on this matter, an ejector-expander is integrated into the conventional expansion valve of a double-flash binary geothermal power plant to enhance the plant performance. The feasibility of the contrived notion is scrutinized from energy, exergy, thermal, and cost balance standpoints and results converged in the increase in turbine output power, energy efficiency, and exergy efficiency of approximately 7.66%, 7.64%, and 7.69%, respectively. Among all components, the condenser constituted a 45.06% share of the overall exergy destruction, whilst the turbine had an exergy destruction ratio of 22.07%. An intensive parametric study is implemented that outlined that the turbine output power, energy efficiency, and exergy efficiency of the ejector-expander power system have a maximum in a specified pressure value of the first and second separator. Another merit was a marked decrease in the unit cost of power when ejector-expander is employed.
format	article
author	Towhid Parikhani Mostafa Delpisheh Maghsoud Abdollahi Haghghi Shahriyar Ghazanfari Holagh Hassan Athari
author_facet	Towhid Parikhani Mostafa Delpisheh Maghsoud Abdollahi Haghghi Shahriyar Ghazanfari Holagh Hassan Athari
author_sort	Towhid Parikhani
title	Performance enhancement and multi-objective optimization of a double-flash binary geothermal power plant
title_short	Performance enhancement and multi-objective optimization of a double-flash binary geothermal power plant
title_full	Performance enhancement and multi-objective optimization of a double-flash binary geothermal power plant
title_fullStr	Performance enhancement and multi-objective optimization of a double-flash binary geothermal power plant
title_full_unstemmed	Performance enhancement and multi-objective optimization of a double-flash binary geothermal power plant
title_sort	performance enhancement and multi-objective optimization of a double-flash binary geothermal power plant
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/44e55485fdc5497bacf98720f5997bcf
work_keys_str_mv	AT towhidparikhani performanceenhancementandmultiobjectiveoptimizationofadoubleflashbinarygeothermalpowerplant AT mostafadelpisheh performanceenhancementandmultiobjectiveoptimizationofadoubleflashbinarygeothermalpowerplant AT maghsoudabdollahihaghghi performanceenhancementandmultiobjectiveoptimizationofadoubleflashbinarygeothermalpowerplant AT shahriyarghazanfariholagh performanceenhancementandmultiobjectiveoptimizationofadoubleflashbinarygeothermalpowerplant AT hassanathari performanceenhancementandmultiobjectiveoptimizationofadoubleflashbinarygeothermalpowerplant
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Performance enhancement and multi-objective optimization of a double-flash binary geothermal power plant

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