Thermodynamic evaluation of solar-geothermal hybrid power plants in northern Chile

A thermodynamic model was developed using Engineering Equation Solver (EES) to evaluate the performance of single and double-flash geothermal power plants assisted by a parabolic trough solar concentrating collector field, considering four different geothermal reservoir conditions. The benefits of d...

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Autores: Cardemil, Jose Miguel, Cortes, Felipe, Díaz, Andrés, Escobar-Moragas, Rodrigo Alfonso
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:Chile
Idioma:inglés
OAI Identifier:oai:repositorio.anid.cl:10533/218888
Acceso en línea:https://hdl.handle.net/10533/218888
Access Level:acceso abierto
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dc.title.es_CL.fl_str_mv Thermodynamic evaluation of solar-geothermal hybrid power plants in northern Chile
dc.title.journal.es_CL.fl_str_mv Energy Conversion and Management
title Thermodynamic evaluation of solar-geothermal hybrid power plants in northern Chile
spellingShingle Thermodynamic evaluation of solar-geothermal hybrid power plants in northern Chile
Cardemil, Jose Miguel
title_short Thermodynamic evaluation of solar-geothermal hybrid power plants in northern Chile
title_full Thermodynamic evaluation of solar-geothermal hybrid power plants in northern Chile
title_fullStr Thermodynamic evaluation of solar-geothermal hybrid power plants in northern Chile
title_full_unstemmed Thermodynamic evaluation of solar-geothermal hybrid power plants in northern Chile
title_sort Thermodynamic evaluation of solar-geothermal hybrid power plants in northern Chile
dc.creator.none.fl_str_mv Cardemil, Jose Miguel
Cortes, Felipe
Díaz, Andrés
Escobar-Moragas, Rodrigo Alfonso
author Cardemil, Jose Miguel
author_facet Cardemil, Jose Miguel
Cortes, Felipe
Díaz, Andrés
Escobar-Moragas, Rodrigo Alfonso
author_role author
author2 Cortes, Felipe
Díaz, Andrés
Escobar-Moragas, Rodrigo Alfonso
author2_role author
author
author
description A thermodynamic model was developed using Engineering Equation Solver (EES) to evaluate the performance of single and double-flash geothermal power plants assisted by a parabolic trough solar concentrating collector field, considering four different geothermal reservoir conditions. The benefits of delivering solar thermal energy for either the superheating or evaporating processes were analyzed in order to achieve the maximum 2nd law efficiency for the hybrid schemes and reduce the geothermal resource consumption for a constant power production. The results of the hybrid single-flash demonstrate that the superheating process generates additional 0.23 kWe/kWth, while supplying solar heat to evaporate the geothermal brine only delivers 0.16 kWe/kWth. The double-flash hybrid plant simulation results allow obtaining 0.29 kWe/kWth and 0.17 kW/kWth by integrating solar energy at the superheater and evaporator, respectively. In this context, the hybrid single-flash power plant is able to produce at least 20% additional power output, depending on the characteristics of the geothermal resource. Moreover, all of the cases analyzed herein increased the exergy efficiency of the process by at least 3%. The developed model also allowed assessing the reduction on the consumption of the geothermal fluid from the reservoir when the plant power output stays constant, up to 16% for the hybrid single-flash, and 19% for the hybrid double-flash. Based on the results obtained in this study, the solar-geothermal hybrid scheme increases the power generation compared with geothermal-only power plants, being an attractive solution for improved management of the geothermal reservoir depletion rates. The study shows evidence of existing optimum configurations for the hybrid systems. A relative performance map was developed in order to determine the best operation approaches according to the reservoir conditions and solar field size. (C) 2016 Elsevier Ltd. All rights reserved. Keywords. Author Keywords:Solar energy; Geothermal energy; Hybrid scheme; Thermodynamic analysis
publishDate 2016
dc.date.issued.es_CL.fl_str_mv 2016
dc.date.accessioned.none.fl_str_mv 2018-07-23T16:33:43Z
2022-07-07T15:05:04Z
dc.date.available.none.fl_str_mv 2018-07-23T16:33:43Z
2022-07-07T15:05:04Z
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dc.relation.doi.es_CL.fl_str_mv 10.1016/j.enconman.2016.06.032
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spelling Escobar-Moragas, Rodrigo AlfonsoDíaz, AndrésCortes, FelipeCardemil, Jose Miguel201610.1016/j.enconman.2016.06.032https://hdl.handle.net/10533/218888http://purl.org/coar/access_right/c_abf2Thermodynamic evaluation of solar-geothermal hybrid power plants in northern ChileCardemil, Jose MiguelCortes, FelipeDíaz, AndrésEscobar-Moragas, Rodrigo Alfonso2018-07-23T16:33:43Z2022-07-07T15:05:04Z2018-07-23T16:33:43Z2022-07-07T15:05:04Z2016A thermodynamic model was developed using Engineering Equation Solver (EES) to evaluate the performance of single and double-flash geothermal power plants assisted by a parabolic trough solar concentrating collector field, considering four different geothermal reservoir conditions. The benefits of delivering solar thermal energy for either the superheating or evaporating processes were analyzed in order to achieve the maximum 2nd law efficiency for the hybrid schemes and reduce the geothermal resource consumption for a constant power production. The results of the hybrid single-flash demonstrate that the superheating process generates additional 0.23 kWe/kWth, while supplying solar heat to evaporate the geothermal brine only delivers 0.16 kWe/kWth. The double-flash hybrid plant simulation results allow obtaining 0.29 kWe/kWth and 0.17 kW/kWth by integrating solar energy at the superheater and evaporator, respectively. In this context, the hybrid single-flash power plant is able to produce at least 20% additional power output, depending on the characteristics of the geothermal resource. Moreover, all of the cases analyzed herein increased the exergy efficiency of the process by at least 3%. The developed model also allowed assessing the reduction on the consumption of the geothermal fluid from the reservoir when the plant power output stays constant, up to 16% for the hybrid single-flash, and 19% for the hybrid double-flash. Based on the results obtained in this study, the solar-geothermal hybrid scheme increases the power generation compared with geothermal-only power plants, being an attractive solution for improved management of the geothermal reservoir depletion rates. The study shows evidence of existing optimum configurations for the hybrid systems. A relative performance map was developed in order to determine the best operation approaches according to the reservoir conditions and solar field size. (C) 2016 Elsevier Ltd. All rights reserved. Keywords. Author Keywords:Solar energy; Geothermal energy; Hybrid scheme; Thermodynamic analysis11306211130621virtual::47218-1WOS:000380601300030https://hdl.handle.net/10533/218888enginstname: Conicytreponame: Repositorio Digital RI2.010.1016/j.enconman.2016.06.032info:eu-repo/grantAgreement//1130621info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477https://www.sciencedirect.com/science/article/pii/S0196890416305131info:eu-repo/semantics/openAccessAttribution-NonCommercial-NoDerivs 3.0 Chilehttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/Thermodynamic evaluation of solar-geothermal hybrid power plants in northern ChileEnergy Conversion and ManagementArticuloinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttps://hdl.handle.net/10533/218888http://purl.org/coar/resource_type/c_2df8fbb177b2b52a-dc62-4cbb-a357-1e0ee6ab6d53virtual::47218-177b2b52a-dc62-4cbb-a357-1e0ee6ab6d53virtual::47218-1CC-LICENSElicense_rdfapplication/octet-stream1232https://repositorio.anid.cl/bitstreams/cd69c258-035f-4553-a190-ea14451fe7bd/downloadf97bcfdf58f3e17b5cec231112dab5b1MD51LICENSElicense.txttext/plain1779https://repositorio.anid.cl/bitstreams/94fffd9c-7ce9-4948-8748-1df17ee4135a/download593a6e7305c66c56041a9f9e15a649c1MD5210533/218888oai:repositorio.anid.cl:10533/2188882023-07-24 17:46:30.731http://creativecommons.org/licenses/by-nc-nd/3.0/cl/info:eu-repo/semantics/openAccesshttps://repositorio.anid.clRepositorio ANIDaletelier@anid.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