Computer simulations of silicide-tetrahedrite thermoelectric generators
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/81157 |
Resumo: | With global warming and rising energy demands, it is important now than ever to transit to renewable energy systems. Thermoelectric (TE) devices can present a feasible alternative to generate clean energy from waste heat. However, to become attractive for large-scale applications, such devices must be cheap, efficient, and based on ecofriendly materials. In this study, the potential of novel silicide-tetrahedrite modules for energy generation was examined. Computer simulations based on the finite element method (FEM) and implicit finite difference method (IFDM) were performed. The developed computational models were validated against data measured on a customized system working with commercial TE devices. The models were capable of predicting the TEGs’ behavior with low deviations (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>≤</mo></mrow></semantics></math></inline-formula>10%). IFDM was used to study the power produced by the silicide-tetrahedrite TEGs for different <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>Δ</mo><mi>T</mi></mrow></semantics></math></inline-formula> between the sinks, whereas FEM was used to study the temperature distributions across the testing system in detail. To complement these results, the influence of the electrical and thermal contact resistances was evaluated. High thermal resistances were found to affect the devices <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>Δ</mo><mi>T</mi></mrow></semantics></math></inline-formula> up to ~15%, whereas high electrical contact resistances reduced the power output of the silicide-tetrahedrite TEGs by more than ~85%. |
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Computer simulations of silicide-tetrahedrite thermoelectric generatorsThermoelectric devicesSilicide-tetrahedrite modulesComputer simulationsFinite element methodImplicit differential methodTetrahedritesMagnesium silicidesScience & TechnologyWith global warming and rising energy demands, it is important now than ever to transit to renewable energy systems. Thermoelectric (TE) devices can present a feasible alternative to generate clean energy from waste heat. However, to become attractive for large-scale applications, such devices must be cheap, efficient, and based on ecofriendly materials. In this study, the potential of novel silicide-tetrahedrite modules for energy generation was examined. Computer simulations based on the finite element method (FEM) and implicit finite difference method (IFDM) were performed. The developed computational models were validated against data measured on a customized system working with commercial TE devices. The models were capable of predicting the TEGs’ behavior with low deviations (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>≤</mo></mrow></semantics></math></inline-formula>10%). IFDM was used to study the power produced by the silicide-tetrahedrite TEGs for different <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>Δ</mo><mi>T</mi></mrow></semantics></math></inline-formula> between the sinks, whereas FEM was used to study the temperature distributions across the testing system in detail. To complement these results, the influence of the electrical and thermal contact resistances was evaluated. High thermal resistances were found to affect the devices <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>Δ</mo><mi>T</mi></mrow></semantics></math></inline-formula> up to ~15%, whereas high electrical contact resistances reduced the power output of the silicide-tetrahedrite TEGs by more than ~85%.This research was supported by Fundação para a Ciência e a Tecnologia (FCT), Portugal, through the contracts UID/Multi/04349/2020 and UI/BD/150713/2020. The authors would like to acknowledge the support of the Spanish Ministry of Science, Innovation and Universities, and European Regional Development Fund, for funding under the PDI2021-126926OB-C22 research project.Multidisciplinary Digital Publishing Institute (MDPI)Universidade do MinhoCoelho, RodrigoCasi, ÁlvaroAraiz, MiguelAstrain, DavidLopes, Elsa BrancoBrito, Francisco Pinto SantosGonçalves, António P.2022-11-052022-11-05T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/81157engCoelho, R.; Casi, Á.; Araiz, M.; Astrain, D.; Branco Lopes, E.; Brito, F.P.; Gonçalves, A.P. Computer Simulations of Silicide-Tetrahedrite Thermoelectric Generators. Micromachines 2022, 13, 1915. https://doi.org/10.3390/mi131119152072-666X10.3390/mi131119151915https://www.mdpi.com/2072-666X/13/11/1915info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:15:47Zoai:repositorium.sdum.uminho.pt:1822/81157Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:08:15.914181Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Computer simulations of silicide-tetrahedrite thermoelectric generators |
title |
Computer simulations of silicide-tetrahedrite thermoelectric generators |
spellingShingle |
Computer simulations of silicide-tetrahedrite thermoelectric generators Coelho, Rodrigo Thermoelectric devices Silicide-tetrahedrite modules Computer simulations Finite element method Implicit differential method Tetrahedrites Magnesium silicides Science & Technology |
title_short |
Computer simulations of silicide-tetrahedrite thermoelectric generators |
title_full |
Computer simulations of silicide-tetrahedrite thermoelectric generators |
title_fullStr |
Computer simulations of silicide-tetrahedrite thermoelectric generators |
title_full_unstemmed |
Computer simulations of silicide-tetrahedrite thermoelectric generators |
title_sort |
Computer simulations of silicide-tetrahedrite thermoelectric generators |
author |
Coelho, Rodrigo |
author_facet |
Coelho, Rodrigo Casi, Álvaro Araiz, Miguel Astrain, David Lopes, Elsa Branco Brito, Francisco Pinto Santos Gonçalves, António P. |
author_role |
author |
author2 |
Casi, Álvaro Araiz, Miguel Astrain, David Lopes, Elsa Branco Brito, Francisco Pinto Santos Gonçalves, António P. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Coelho, Rodrigo Casi, Álvaro Araiz, Miguel Astrain, David Lopes, Elsa Branco Brito, Francisco Pinto Santos Gonçalves, António P. |
dc.subject.por.fl_str_mv |
Thermoelectric devices Silicide-tetrahedrite modules Computer simulations Finite element method Implicit differential method Tetrahedrites Magnesium silicides Science & Technology |
topic |
Thermoelectric devices Silicide-tetrahedrite modules Computer simulations Finite element method Implicit differential method Tetrahedrites Magnesium silicides Science & Technology |
description |
With global warming and rising energy demands, it is important now than ever to transit to renewable energy systems. Thermoelectric (TE) devices can present a feasible alternative to generate clean energy from waste heat. However, to become attractive for large-scale applications, such devices must be cheap, efficient, and based on ecofriendly materials. In this study, the potential of novel silicide-tetrahedrite modules for energy generation was examined. Computer simulations based on the finite element method (FEM) and implicit finite difference method (IFDM) were performed. The developed computational models were validated against data measured on a customized system working with commercial TE devices. The models were capable of predicting the TEGs’ behavior with low deviations (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>≤</mo></mrow></semantics></math></inline-formula>10%). IFDM was used to study the power produced by the silicide-tetrahedrite TEGs for different <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>Δ</mo><mi>T</mi></mrow></semantics></math></inline-formula> between the sinks, whereas FEM was used to study the temperature distributions across the testing system in detail. To complement these results, the influence of the electrical and thermal contact resistances was evaluated. High thermal resistances were found to affect the devices <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>Δ</mo><mi>T</mi></mrow></semantics></math></inline-formula> up to ~15%, whereas high electrical contact resistances reduced the power output of the silicide-tetrahedrite TEGs by more than ~85%. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-11-05 2022-11-05T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/1822/81157 |
url |
https://hdl.handle.net/1822/81157 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Coelho, R.; Casi, Á.; Araiz, M.; Astrain, D.; Branco Lopes, E.; Brito, F.P.; Gonçalves, A.P. Computer Simulations of Silicide-Tetrahedrite Thermoelectric Generators. Micromachines 2022, 13, 1915. https://doi.org/10.3390/mi13111915 2072-666X 10.3390/mi13111915 1915 https://www.mdpi.com/2072-666X/13/11/1915 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute (MDPI) |
publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute (MDPI) |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799132504482906112 |