Influence of heat pipe operating temperature on exhaust heat thermoelectric generation
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/26582 |
Resumo: | Increasingly stringent targets on energy efficiency and emissions, as well as growing vehicle electrification are making attractive the electric recovery of the energy normally wasted through the tailpipe of Internal Combustion Engines. Recent developments in thermoelectrics (TE) may soon make them a viable solution for such applications. This team has been exploring the potential of using TE modules in combination with variable conductance heat pipes for transferring the exhaust heat to the generator with very low thermal resistance and at a constant, prescribed temperature. This passive temperature control eliminates the need for by-pass systems in the event of temperature overshoots. The operating temperature of a generator should be as high as possible in order to maximize the Seebeck effect. However, currently available modules are temperature limited. Moreover, the higher the HP temperature the less the usable thermal power at the exhaust will be (heat can only be transferred to from a hotter to a colder body). The present work assesses both theoretically and experimentally the influence of the HP temperature in the electric output of a thermoelectric generator. A small diesel engine and a generator were tested and it was found that a high HP operating temperature is only limitative for performance in the cases where low exhaust temperature and low engine power are present. In those cases it is possible to estimate an optimal HP temperature in order to maximize power output. The combined use of Seebeck modules and heat pipes was found to be highly advantageous in various ways. |
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Influence of heat pipe operating temperature on exhaust heat thermoelectric generationWaste heat recoveryThermoelectricsHeat pipesExhaust heat recoveryScience & TechnologyIncreasingly stringent targets on energy efficiency and emissions, as well as growing vehicle electrification are making attractive the electric recovery of the energy normally wasted through the tailpipe of Internal Combustion Engines. Recent developments in thermoelectrics (TE) may soon make them a viable solution for such applications. This team has been exploring the potential of using TE modules in combination with variable conductance heat pipes for transferring the exhaust heat to the generator with very low thermal resistance and at a constant, prescribed temperature. This passive temperature control eliminates the need for by-pass systems in the event of temperature overshoots. The operating temperature of a generator should be as high as possible in order to maximize the Seebeck effect. However, currently available modules are temperature limited. Moreover, the higher the HP temperature the less the usable thermal power at the exhaust will be (heat can only be transferred to from a hotter to a colder body). The present work assesses both theoretically and experimentally the influence of the HP temperature in the electric output of a thermoelectric generator. A small diesel engine and a generator were tested and it was found that a high HP operating temperature is only limitative for performance in the cases where low exhaust temperature and low engine power are present. In those cases it is possible to estimate an optimal HP temperature in order to maximize power output. The combined use of Seebeck modules and heat pipes was found to be highly advantageous in various ways.Fundação para a Ciência e a Tecnologia (FCT), FEDER e POFC CompeteMIT Portugal EDAM, Project MOBI-MPPSAE InternationalUniversidade do MinhoBrito, F. P.Martins, JorgeGonçalves, L. M.Antunes, NunoSousa, Diogo2013-072013-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/26582engF. P. Brito, Jorge Martins, L.M. Goncalves, Nuno Antunes, Diogo Sousa Influence of Heat Pipe Operating Temperature on Exhaust Heat Thermoelectric Generation SAE International Journal of Passenger Cars - Mechanical Systems 6(2):2013 652-6641946-399510.4271/2013-01-0559http://saepcmech.saejournals.org/content/6/2/652.shortinfo: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:RCAAP2023-07-21T12:30:41Zoai:repositorium.sdum.uminho.pt:1822/26582Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:25:55.532941Repositório 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 |
Influence of heat pipe operating temperature on exhaust heat thermoelectric generation |
title |
Influence of heat pipe operating temperature on exhaust heat thermoelectric generation |
spellingShingle |
Influence of heat pipe operating temperature on exhaust heat thermoelectric generation Brito, F. P. Waste heat recovery Thermoelectrics Heat pipes Exhaust heat recovery Science & Technology |
title_short |
Influence of heat pipe operating temperature on exhaust heat thermoelectric generation |
title_full |
Influence of heat pipe operating temperature on exhaust heat thermoelectric generation |
title_fullStr |
Influence of heat pipe operating temperature on exhaust heat thermoelectric generation |
title_full_unstemmed |
Influence of heat pipe operating temperature on exhaust heat thermoelectric generation |
title_sort |
Influence of heat pipe operating temperature on exhaust heat thermoelectric generation |
author |
Brito, F. P. |
author_facet |
Brito, F. P. Martins, Jorge Gonçalves, L. M. Antunes, Nuno Sousa, Diogo |
author_role |
author |
author2 |
Martins, Jorge Gonçalves, L. M. Antunes, Nuno Sousa, Diogo |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Brito, F. P. Martins, Jorge Gonçalves, L. M. Antunes, Nuno Sousa, Diogo |
dc.subject.por.fl_str_mv |
Waste heat recovery Thermoelectrics Heat pipes Exhaust heat recovery Science & Technology |
topic |
Waste heat recovery Thermoelectrics Heat pipes Exhaust heat recovery Science & Technology |
description |
Increasingly stringent targets on energy efficiency and emissions, as well as growing vehicle electrification are making attractive the electric recovery of the energy normally wasted through the tailpipe of Internal Combustion Engines. Recent developments in thermoelectrics (TE) may soon make them a viable solution for such applications. This team has been exploring the potential of using TE modules in combination with variable conductance heat pipes for transferring the exhaust heat to the generator with very low thermal resistance and at a constant, prescribed temperature. This passive temperature control eliminates the need for by-pass systems in the event of temperature overshoots. The operating temperature of a generator should be as high as possible in order to maximize the Seebeck effect. However, currently available modules are temperature limited. Moreover, the higher the HP temperature the less the usable thermal power at the exhaust will be (heat can only be transferred to from a hotter to a colder body). The present work assesses both theoretically and experimentally the influence of the HP temperature in the electric output of a thermoelectric generator. A small diesel engine and a generator were tested and it was found that a high HP operating temperature is only limitative for performance in the cases where low exhaust temperature and low engine power are present. In those cases it is possible to estimate an optimal HP temperature in order to maximize power output. The combined use of Seebeck modules and heat pipes was found to be highly advantageous in various ways. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-07 2013-07-01T00:00:00Z |
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 |
http://hdl.handle.net/1822/26582 |
url |
http://hdl.handle.net/1822/26582 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
F. P. Brito, Jorge Martins, L.M. Goncalves, Nuno Antunes, Diogo Sousa Influence of Heat Pipe Operating Temperature on Exhaust Heat Thermoelectric Generation SAE International Journal of Passenger Cars - Mechanical Systems 6(2):2013 652-664 1946-3995 10.4271/2013-01-0559 http://saepcmech.saejournals.org/content/6/2/652.short |
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 |
SAE International |
publisher.none.fl_str_mv |
SAE International |
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 |
instacron_str |
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 |
repository.mail.fl_str_mv |
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1799132745375416320 |