Experimental analysis of the thermal entrainment factor of air curtains in vertical open display cabinets for different ambient air conditions

Detalhes bibliográficos
Autor(a) principal: Gaspar, Pedro Dinis
Data de Publicação: 2011
Outros Autores: Gonçalves, Luís Carlos Carrilho, Pitarma, R. A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.6/7265
Resumo: The vertical open refrigerated display cabinets suffer alterations of their thermal performance and energy efficiency due to variations of ambient air conditions. The air curtain provides an aerothermodynamics insulation effect that can be evaluated by the thermal entrainment factor calculation as an engineering approximation or by the calculus of all sensible and latent thermal loads. This study presents the variation of heat transfer rate and thermal entrainment factor obtained through experimental tests carried out for different ambient air conditions, varying air temperature, relative humidity, velocity and its direction relatively to the display cabinet frontal opening. The thermal entrainment factor are analysed and compared with the total sensible and latent heats results for the experimental tests. From an engineering point of view, it is concluded that thermal entrainment factor cannot be used indiscriminately, although its use is suitable to design better cabinet under the same climate class condition.
id RCAP_6d2fe5e4f30bc468e1e506bdeaf45892
oai_identifier_str oai:ubibliorum.ubi.pt:10400.6/7265
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Experimental analysis of the thermal entrainment factor of air curtains in vertical open display cabinets for different ambient air conditionsThermal entrainment factorRefrigerated display cabinetExperimental dataThe vertical open refrigerated display cabinets suffer alterations of their thermal performance and energy efficiency due to variations of ambient air conditions. The air curtain provides an aerothermodynamics insulation effect that can be evaluated by the thermal entrainment factor calculation as an engineering approximation or by the calculus of all sensible and latent thermal loads. This study presents the variation of heat transfer rate and thermal entrainment factor obtained through experimental tests carried out for different ambient air conditions, varying air temperature, relative humidity, velocity and its direction relatively to the display cabinet frontal opening. The thermal entrainment factor are analysed and compared with the total sensible and latent heats results for the experimental tests. From an engineering point of view, it is concluded that thermal entrainment factor cannot be used indiscriminately, although its use is suitable to design better cabinet under the same climate class condition.ElsevieruBibliorumGaspar, Pedro DinisGonçalves, Luís Carlos CarrilhoPitarma, R. A.2019-10-17T15:24:07Z20112011-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/7265eng1359-431110.1016/j.applthermaleng.2010.11.020metadata only accessinfo: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:RCAAP2023-12-15T09:46:30Zoai:ubibliorum.ubi.pt:10400.6/7265Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:47:49.281510Repositório 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 Experimental analysis of the thermal entrainment factor of air curtains in vertical open display cabinets for different ambient air conditions
title Experimental analysis of the thermal entrainment factor of air curtains in vertical open display cabinets for different ambient air conditions
spellingShingle Experimental analysis of the thermal entrainment factor of air curtains in vertical open display cabinets for different ambient air conditions
Gaspar, Pedro Dinis
Thermal entrainment factor
Refrigerated display cabinet
Experimental data
title_short Experimental analysis of the thermal entrainment factor of air curtains in vertical open display cabinets for different ambient air conditions
title_full Experimental analysis of the thermal entrainment factor of air curtains in vertical open display cabinets for different ambient air conditions
title_fullStr Experimental analysis of the thermal entrainment factor of air curtains in vertical open display cabinets for different ambient air conditions
title_full_unstemmed Experimental analysis of the thermal entrainment factor of air curtains in vertical open display cabinets for different ambient air conditions
title_sort Experimental analysis of the thermal entrainment factor of air curtains in vertical open display cabinets for different ambient air conditions
author Gaspar, Pedro Dinis
author_facet Gaspar, Pedro Dinis
Gonçalves, Luís Carlos Carrilho
Pitarma, R. A.
author_role author
author2 Gonçalves, Luís Carlos Carrilho
Pitarma, R. A.
author2_role author
author
dc.contributor.none.fl_str_mv uBibliorum
dc.contributor.author.fl_str_mv Gaspar, Pedro Dinis
Gonçalves, Luís Carlos Carrilho
Pitarma, R. A.
dc.subject.por.fl_str_mv Thermal entrainment factor
Refrigerated display cabinet
Experimental data
topic Thermal entrainment factor
Refrigerated display cabinet
Experimental data
description The vertical open refrigerated display cabinets suffer alterations of their thermal performance and energy efficiency due to variations of ambient air conditions. The air curtain provides an aerothermodynamics insulation effect that can be evaluated by the thermal entrainment factor calculation as an engineering approximation or by the calculus of all sensible and latent thermal loads. This study presents the variation of heat transfer rate and thermal entrainment factor obtained through experimental tests carried out for different ambient air conditions, varying air temperature, relative humidity, velocity and its direction relatively to the display cabinet frontal opening. The thermal entrainment factor are analysed and compared with the total sensible and latent heats results for the experimental tests. From an engineering point of view, it is concluded that thermal entrainment factor cannot be used indiscriminately, although its use is suitable to design better cabinet under the same climate class condition.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-01-01T00:00:00Z
2019-10-17T15:24:07Z
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/10400.6/7265
url http://hdl.handle.net/10400.6/7265
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1359-4311
10.1016/j.applthermaleng.2010.11.020
dc.rights.driver.fl_str_mv metadata only access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv metadata only access
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
repository.mail.fl_str_mv
_version_ 1799136373395947520

Registros relacionados