Feasibility of the application of a two-phase thermosyphon for passive cooling of internal environments
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | PARC (Campinas) |
Texto Completo: | https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8672200 |
Resumo: | Research shows that the world faces global warming, which is expected to be irreversible by the end of this century. With the temperature elevation, the need to cool internal ambient in buildings increases, and new energy-saving technologies must be employed. Thus, investigating and proposing new passive cooling methods is needed. The present study aims to evaluate the feasibility of applying two-phase thermosyphons to cool indoor environments. For this, a test cell integrated with a copper coil, which simulated the evaporator section of a thermosyphon, was experimentally studied. A temperature-controlled thermal bath kept the coil temperature at a prescribed and uniform temperature along its length. Overall, the device was able to extract heat passively. The device managed to reduce the temperature of the indoor air significantly. Much of the heat was extracted in the first hour of the test and, in some cases, in the initial first and halt hours. However, less heat was removed when the temperature difference between the coil and the cell was equal to or less than 7°C. A similarity in the internal air temperature distributions in all tests was observed, with a higher temperature level at the upper quadrants of the cell. The speed of stabilization of the temperatures of the internal faces coincided when the temperature of the copper coil increased. |
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Feasibility of the application of a two-phase thermosyphon for passive cooling of internal environmentsViabilidade da aplicação de termossifão bifásico para resfriamento passivo de ambientes internosTest cellTwo-phase thermosiphonPassive coolingBioclimatic strategyCélula testeTermossifão bifásicoResfriamento PassivoEstratégia bioclimáticaResearch shows that the world faces global warming, which is expected to be irreversible by the end of this century. With the temperature elevation, the need to cool internal ambient in buildings increases, and new energy-saving technologies must be employed. Thus, investigating and proposing new passive cooling methods is needed. The present study aims to evaluate the feasibility of applying two-phase thermosyphons to cool indoor environments. For this, a test cell integrated with a copper coil, which simulated the evaporator section of a thermosyphon, was experimentally studied. A temperature-controlled thermal bath kept the coil temperature at a prescribed and uniform temperature along its length. Overall, the device was able to extract heat passively. The device managed to reduce the temperature of the indoor air significantly. Much of the heat was extracted in the first hour of the test and, in some cases, in the initial first and halt hours. However, less heat was removed when the temperature difference between the coil and the cell was equal to or less than 7°C. A similarity in the internal air temperature distributions in all tests was observed, with a higher temperature level at the upper quadrants of the cell. The speed of stabilization of the temperatures of the internal faces coincided when the temperature of the copper coil increased.Pesquisas evidenciam que está em curso um aquecimento global irreversível até o fim deste século. Tal elevação de temperaturas do planeta aumenta ainda mais a necessidade de resfriamento de ambientes internos em edifícios, onde deve se empregar tecnologias mais efetivas em termos de consumo de energia. Neste contexto, métodos de arrefecimentos passivos devem ser investigados. O presente trabalho tem como objetivo avaliar a viabilidade da aplicação de termossifões bifásicos como estratégia para resfriamento de ambientes internos. Para isso, por meio de um estudo experimental, foi utilizada uma célula-teste, integrada com uma serpentina de cobre que simulou a seção evaporadora de um termossifão. A temperatura da serpentina foi mantida prescrita e uniforme ao longo de seu comprimento por um banho de temperatura controlada. No geral, pôde-se observar que o dispositivo se mostrou capaz de extrair calor de forma passiva do ambiente, reduzindo significativamente a temperatura do ar interno. Grande parte do calor foi extraído na primeira hora e, em alguns casos, na primeira hora e meia de testes. Contudo, a transferência do calor interno foi deficiente em situações em que a diferença de temperaturas entre a serpentina e a célula foi igual ou inferior a 7°C. A distribuição da temperatura do ar interno mostrou ser similar para todos os ensaios realizados, sendo mais alta nos quadrantes superiores da célula. Além disso, velocidade de estabilização das temperaturas das superfícies internas reduziu quando a temperatura da serpentina de cobre aumentou.Universidade Estadual de Campinas2023-09-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionTextoinfo:eu-repo/semantics/otherapplication/pdfhttps://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/867220010.20396/parc.v14i00.8672200PARC Pesquisa em Arquitetura e Construção; Vol. 14 (2023): Continuous publication; e023021PARC Pesquisa em Arquitetura e Construção; Vol. 14 (2023): Publicação contínua; e023021PARC Pesquisa em Arquitetura e Construção; v. 14 (2023): Publicação contínua; e0230211980-6809reponame:PARC (Campinas)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPporhttps://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8672200/32451Brazil: ContemporaryBrasil; Contemporâneo Copyright (c) 2023 PARC Pesquisa em Arquitetura e Construçãohttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessAlmeida, Fernando da SilvaBrandalise, Mariane PintoFuso, Luciano SerconekCisterna, Luis Hernán RodríguezMantelli, Marcia Barbosa HenriquesMizgier, Martin Ordenes2023-12-29T21:22:05Zoai:ojs.periodicos.sbu.unicamp.br:article/8672200Revistahttp://periodicos.sbu.unicamp.br/ojs/index.php/parcPUBhttps://periodicos.sbu.unicamp.br/ojs/index.php/parc/oai||parc@fec.unicamp.br1980-68091980-6809opendoar:2023-12-29T21:22:05PARC (Campinas) - Universidade Estadual de Campinas (UNICAMP)false |
dc.title.none.fl_str_mv |
Feasibility of the application of a two-phase thermosyphon for passive cooling of internal environments Viabilidade da aplicação de termossifão bifásico para resfriamento passivo de ambientes internos |
title |
Feasibility of the application of a two-phase thermosyphon for passive cooling of internal environments |
spellingShingle |
Feasibility of the application of a two-phase thermosyphon for passive cooling of internal environments Almeida, Fernando da Silva Test cell Two-phase thermosiphon Passive cooling Bioclimatic strategy Célula teste Termossifão bifásico Resfriamento Passivo Estratégia bioclimática |
title_short |
Feasibility of the application of a two-phase thermosyphon for passive cooling of internal environments |
title_full |
Feasibility of the application of a two-phase thermosyphon for passive cooling of internal environments |
title_fullStr |
Feasibility of the application of a two-phase thermosyphon for passive cooling of internal environments |
title_full_unstemmed |
Feasibility of the application of a two-phase thermosyphon for passive cooling of internal environments |
title_sort |
Feasibility of the application of a two-phase thermosyphon for passive cooling of internal environments |
author |
Almeida, Fernando da Silva |
author_facet |
Almeida, Fernando da Silva Brandalise, Mariane Pinto Fuso, Luciano Serconek Cisterna, Luis Hernán Rodríguez Mantelli, Marcia Barbosa Henriques Mizgier, Martin Ordenes |
author_role |
author |
author2 |
Brandalise, Mariane Pinto Fuso, Luciano Serconek Cisterna, Luis Hernán Rodríguez Mantelli, Marcia Barbosa Henriques Mizgier, Martin Ordenes |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Almeida, Fernando da Silva Brandalise, Mariane Pinto Fuso, Luciano Serconek Cisterna, Luis Hernán Rodríguez Mantelli, Marcia Barbosa Henriques Mizgier, Martin Ordenes |
dc.subject.por.fl_str_mv |
Test cell Two-phase thermosiphon Passive cooling Bioclimatic strategy Célula teste Termossifão bifásico Resfriamento Passivo Estratégia bioclimática |
topic |
Test cell Two-phase thermosiphon Passive cooling Bioclimatic strategy Célula teste Termossifão bifásico Resfriamento Passivo Estratégia bioclimática |
description |
Research shows that the world faces global warming, which is expected to be irreversible by the end of this century. With the temperature elevation, the need to cool internal ambient in buildings increases, and new energy-saving technologies must be employed. Thus, investigating and proposing new passive cooling methods is needed. The present study aims to evaluate the feasibility of applying two-phase thermosyphons to cool indoor environments. For this, a test cell integrated with a copper coil, which simulated the evaporator section of a thermosyphon, was experimentally studied. A temperature-controlled thermal bath kept the coil temperature at a prescribed and uniform temperature along its length. Overall, the device was able to extract heat passively. The device managed to reduce the temperature of the indoor air significantly. Much of the heat was extracted in the first hour of the test and, in some cases, in the initial first and halt hours. However, less heat was removed when the temperature difference between the coil and the cell was equal to or less than 7°C. A similarity in the internal air temperature distributions in all tests was observed, with a higher temperature level at the upper quadrants of the cell. The speed of stabilization of the temperatures of the internal faces coincided when the temperature of the copper coil increased. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-09-05 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Texto info:eu-repo/semantics/other |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8672200 10.20396/parc.v14i00.8672200 |
url |
https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8672200 |
identifier_str_mv |
10.20396/parc.v14i00.8672200 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8672200/32451 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2023 PARC Pesquisa em Arquitetura e Construção https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2023 PARC Pesquisa em Arquitetura e Construção https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
Brazil: Contemporary Brasil; Contemporâneo |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Campinas |
publisher.none.fl_str_mv |
Universidade Estadual de Campinas |
dc.source.none.fl_str_mv |
PARC Pesquisa em Arquitetura e Construção; Vol. 14 (2023): Continuous publication; e023021 PARC Pesquisa em Arquitetura e Construção; Vol. 14 (2023): Publicação contínua; e023021 PARC Pesquisa em Arquitetura e Construção; v. 14 (2023): Publicação contínua; e023021 1980-6809 reponame:PARC (Campinas) instname:Universidade Estadual de Campinas (UNICAMP) instacron:UNICAMP |
instname_str |
Universidade Estadual de Campinas (UNICAMP) |
instacron_str |
UNICAMP |
institution |
UNICAMP |
reponame_str |
PARC (Campinas) |
collection |
PARC (Campinas) |
repository.name.fl_str_mv |
PARC (Campinas) - Universidade Estadual de Campinas (UNICAMP) |
repository.mail.fl_str_mv |
||parc@fec.unicamp.br |
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1809283615782076416 |