Cooling by sweeping: a new operation method to achieve ferroic refrigeration without fluids or thermally switchable components
Autor(a) principal: | |
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Data de Publicação: | 2019 |
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/10773/36963 |
Resumo: | So far, all ferroic-based refrigerator prototypes have relied either in fluids or thermally switchable components as main heat exchangers, which brings some issues in terms of their applicability, such as the use of pumps for moving the fluid and the availability of thermally switchable components. We show that such heat exchangers are not necessary if field dynamics are explored. By using the example of magnetocaloric refrigeration, we show numerically that the operation of a simple apparatus constituted only by a magnetocaloric material and a magnet sweeping at a given frequency results in refrigeration. With the optimization of the type of motion, resting times after the complete application and removal of the magnetic field and frequency, a temperature span of 0.87 K is reached, which represents ∼ 20% of the maximum adiabatic temperature span of the material used in modeling, gadolinium. |
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Cooling by sweeping: a new operation method to achieve ferroic refrigeration without fluids or thermally switchable componentsSolid state refrigerationFerroic refrigerationMagnetocaloric effectMagnetic fieldSo far, all ferroic-based refrigerator prototypes have relied either in fluids or thermally switchable components as main heat exchangers, which brings some issues in terms of their applicability, such as the use of pumps for moving the fluid and the availability of thermally switchable components. We show that such heat exchangers are not necessary if field dynamics are explored. By using the example of magnetocaloric refrigeration, we show numerically that the operation of a simple apparatus constituted only by a magnetocaloric material and a magnet sweeping at a given frequency results in refrigeration. With the optimization of the type of motion, resting times after the complete application and removal of the magnetic field and frequency, a temperature span of 0.87 K is reached, which represents ∼ 20% of the maximum adiabatic temperature span of the material used in modeling, gadolinium.Elsevier2023-04-13T08:07:31Z2019-05-01T00:00:00Z2019-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/36963eng0140-700710.1016/j.ijrefrig.2019.02.029Silva, D. J.Amaral, J. S.Amaral, V. S.info: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:RCAAP2024-02-22T12:11:19Zoai:ria.ua.pt:10773/36963Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:07:39.483745Repositório 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 |
Cooling by sweeping: a new operation method to achieve ferroic refrigeration without fluids or thermally switchable components |
title |
Cooling by sweeping: a new operation method to achieve ferroic refrigeration without fluids or thermally switchable components |
spellingShingle |
Cooling by sweeping: a new operation method to achieve ferroic refrigeration without fluids or thermally switchable components Silva, D. J. Solid state refrigeration Ferroic refrigeration Magnetocaloric effect Magnetic field |
title_short |
Cooling by sweeping: a new operation method to achieve ferroic refrigeration without fluids or thermally switchable components |
title_full |
Cooling by sweeping: a new operation method to achieve ferroic refrigeration without fluids or thermally switchable components |
title_fullStr |
Cooling by sweeping: a new operation method to achieve ferroic refrigeration without fluids or thermally switchable components |
title_full_unstemmed |
Cooling by sweeping: a new operation method to achieve ferroic refrigeration without fluids or thermally switchable components |
title_sort |
Cooling by sweeping: a new operation method to achieve ferroic refrigeration without fluids or thermally switchable components |
author |
Silva, D. J. |
author_facet |
Silva, D. J. Amaral, J. S. Amaral, V. S. |
author_role |
author |
author2 |
Amaral, J. S. Amaral, V. S. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Silva, D. J. Amaral, J. S. Amaral, V. S. |
dc.subject.por.fl_str_mv |
Solid state refrigeration Ferroic refrigeration Magnetocaloric effect Magnetic field |
topic |
Solid state refrigeration Ferroic refrigeration Magnetocaloric effect Magnetic field |
description |
So far, all ferroic-based refrigerator prototypes have relied either in fluids or thermally switchable components as main heat exchangers, which brings some issues in terms of their applicability, such as the use of pumps for moving the fluid and the availability of thermally switchable components. We show that such heat exchangers are not necessary if field dynamics are explored. By using the example of magnetocaloric refrigeration, we show numerically that the operation of a simple apparatus constituted only by a magnetocaloric material and a magnet sweeping at a given frequency results in refrigeration. With the optimization of the type of motion, resting times after the complete application and removal of the magnetic field and frequency, a temperature span of 0.87 K is reached, which represents ∼ 20% of the maximum adiabatic temperature span of the material used in modeling, gadolinium. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-05-01T00:00:00Z 2019-05 2023-04-13T08:07:31Z |
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/10773/36963 |
url |
http://hdl.handle.net/10773/36963 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0140-7007 10.1016/j.ijrefrig.2019.02.029 |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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 |
instname_str |
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 |
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1799137731145629696 |