Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks
For a pumped heat energy storage technology with commercial solar salt and a cold fluid such as methanol, the performance in long times of the Brayton like model associated to the losses of the four tanks (two high temperature units and two low temperature units) was studied. A round trip efficiency...
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| Format: | article |
| Sprog: | engelsk |
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2022
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| Online adgang: | https://hdl.handle.net/20.500.12008/35616 https://doi.org/10.1016/j.est.2021.103793 |
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| _version_ | 1868890136866979840 |
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| author | Salomone-González, D. |
| author2 | Curto-Risso, Pedro Favre, Federico |
| author2_role | author author |
| author_browse | Curto-Risso, Pedro Favre, Federico Salomone-González, D. |
| author_facet | Salomone-González, D. Curto-Risso, Pedro Favre, Federico |
| author_role | author |
| collection | COLIBRI |
| dc.contributor.none.fl_str_mv | Salomone-González D., Universidad de la República (Uruguay). Facultad de Ingeniería. Curto-Risso Pedro, Universidad de la República (Uruguay). Facultad de Ingeniería Favre Federico, Universidad de la República (Uruguay). Facultad de Ingeniería. |
| dc.creator.none.fl_str_mv | Salomone-González, D. Curto-Risso, Pedro Favre, Federico |
| dc.date.none.fl_str_mv | 2022 2023-02-02T21:56:35Z 2023-02-02T21:56:35Z |
| dc.format.none.fl_str_mv | 16 p. application/pdf |
| dc.identifier.none.fl_str_mv | Salomone-González, D., Curto-Risso, P. y Favre, F. "Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks". Journal of Energy Storage Vol. 46. [en línea] 2022 Feb. 2022, 103793. 16 p. DOI: https://doi.org/10.1016/j.est.2021.103793. https://hdl.handle.net/20.500.12008/35616 https://doi.org/10.1016/j.est.2021.103793 |
| dc.language.none.fl_str_mv | en eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.relation.none.fl_str_mv | Journal of Energy Storage Vol. 46, Feb. 2022, 103793. |
| dc.rights.none.fl_str_mv | info:eu-repo/semantics/openAccess Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0) |
| dc.source.none.fl_str_mv | reponame:COLIBRI instname:Universidad de la República instacron:Universidad de la República |
| dc.subject.none.fl_str_mv | Energy storage Molten salts Coupled Brayton model Round trip efficiency Heat leak model |
| dc.title.none.fl_str_mv | Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks |
| dc.type.none.fl_str_mv | Artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| description | For a pumped heat energy storage technology with commercial solar salt and a cold fluid such as methanol, the performance in long times of the Brayton like model associated to the losses of the four tanks (two high temperature units and two low temperature units) was studied. A round trip efficiency evaluation model linked with the heat leak coefficient was proposed for the sensible storage tanks, considering the losses for each face exposed to the environment. The different energy leaks and temperatures in the tanks were calculated for hourly climatic fluctuations during a reference year for a reference city. A zero-dimensional model was developed where radiation (direct and diffuse), convection and conduction effects were considered. The obtained results showed that for long periods, time and insulation thickness have a significant influence on the performance of the technology for long periods. For Brayton pumped heat energy storage technology with solar salts the round trip efficiency, which can be reduced daily by 0.4% even for a considerable insulation thickness of around 10% of the tank diameter. Winter–summer climatic conditions do not show a significant difference for tanks at higher temperatures, but as the temperature decreases, the effect becomes more visible but not decisive for the performance of the technology. The relatively high crystallization point of solar salt represents a significant solidification risk that limits the operation of the PHES technology during waiting periods for a surplus power to charge the system. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | anni_92d7a39b71cfa75307c99319fb032cda |
| identifier_str_mv | Salomone-González, D., Curto-Risso, P. y Favre, F. "Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks". Journal of Energy Storage Vol. 46. [en línea] 2022 Feb. 2022, 103793. 16 p. DOI: https://doi.org/10.1016/j.est.2021.103793. |
| instacron_str | Universidad de la República |
| institution | Universidad de la República |
| instname_str | Universidad de la República |
| language | eng |
| language_invalid_str_mv | en |
| network_acronym_str | anni |
| network_name_str | oai-lr-anni |
| oai_identifier_str | oai:colibri.udelar.edu.uy:20.500.12008/35616 |
| publishDate | 2022 |
| publishDateSort | 2022 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | COLIBRI |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0) |
| spelling | Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanksSalomone-González, D.Curto-Risso, PedroFavre, FedericoEnergy storageMolten saltsCoupled Brayton modelRound trip efficiencyHeat leak modelFor a pumped heat energy storage technology with commercial solar salt and a cold fluid such as methanol, the performance in long times of the Brayton like model associated to the losses of the four tanks (two high temperature units and two low temperature units) was studied. A round trip efficiency evaluation model linked with the heat leak coefficient was proposed for the sensible storage tanks, considering the losses for each face exposed to the environment. The different energy leaks and temperatures in the tanks were calculated for hourly climatic fluctuations during a reference year for a reference city. A zero-dimensional model was developed where radiation (direct and diffuse), convection and conduction effects were considered. The obtained results showed that for long periods, time and insulation thickness have a significant influence on the performance of the technology for long periods. For Brayton pumped heat energy storage technology with solar salts the round trip efficiency, which can be reduced daily by 0.4% even for a considerable insulation thickness of around 10% of the tank diameter. Winter–summer climatic conditions do not show a significant difference for tanks at higher temperatures, but as the temperature decreases, the effect becomes more visible but not decisive for the performance of the technology. The relatively high crystallization point of solar salt represents a significant solidification risk that limits the operation of the PHES technology during waiting periods for a surplus power to charge the system.Agencia Nacional de Investigación e Innovación (ANII); Fondo Sectorial de Energía, Uruguay; proyecto FSE-1-2018-1-153077.ElsevierSalomone-González D., Universidad de la República (Uruguay). Facultad de Ingeniería.Curto-Risso Pedro, Universidad de la República (Uruguay). Facultad de IngenieríaFavre Federico, Universidad de la República (Uruguay). Facultad de Ingeniería.2023-02-02T21:56:35Z2023-02-02T21:56:35Z2022Artículoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion16 p.application/pdfSalomone-González, D., Curto-Risso, P. y Favre, F. "Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks". Journal of Energy Storage Vol. 46. [en línea] 2022 Feb. 2022, 103793. 16 p. DOI: https://doi.org/10.1016/j.est.2021.103793.https://hdl.handle.net/20.500.12008/35616https://doi.org/10.1016/j.est.2021.103793reponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaenengJournal of Energy Storage Vol. 46, Feb. 2022, 103793.Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad de la República.(Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessLicencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)oai:colibri.udelar.edu.uy:20.500.12008/356162026-04-14T10:41:05Z |
| spellingShingle | Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks Salomone-González, D. Energy storage Molten salts Coupled Brayton model Round trip efficiency Heat leak model |
| status_str | publishedVersion |
| title | Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks |
| title_full | Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks |
| title_fullStr | Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks |
| title_full_unstemmed | Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks |
| title_short | Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks |
| title_sort | Modeling of heat leak effect in round trip efficiency for Brayton pumped heat energy storage with liquid media, by cooling and heating of the reservoirs tanks |
| topic | Energy storage Molten salts Coupled Brayton model Round trip efficiency Heat leak model |
| url | https://hdl.handle.net/20.500.12008/35616 https://doi.org/10.1016/j.est.2021.103793 |