Experimental study of the fins arrangement pattern of refrigerated display cabinet evaporator towards thermal performance improvement
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/10400.6/7285 |
Resumo: | This paper reports the results of experimental tests performed according to ISO 23953 in an open multideck display cabinet with dual air curtain to evaluate the impact of the evaporator fins arrangement pattern on the overall thermal performance. Experimental laboratory tests were performed on climate class no. 3 (25 °C and 60%) with three different evaporator configurations. The thermal exchange area was the same among the three models to keep the aluminum fins and cooper tubes cost constant. The study investigates the increase on the operation time before defrost and the minimization of the latent thermal load due water condensation and freezing between the evaporator fins. Compared to the uniform fin pitch, it was possible to reduce 18% the frost mass and, thus, increasing the refrigeration time between defrosts and decreasing 14% the total heat load. However, an increase on the air (+0.6 °C) and product temperatures (+1.9 °C) due to an inefficient heat exchange, leads to new analysis and assessments related to the residence time between the fins and the airflow in order to keep the temperatures low at the refrigerated space and thus ensuring food safety. |
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Experimental study of the fins arrangement pattern of refrigerated display cabinet evaporator towards thermal performance improvementFins arrangement patternOpen refrigerated display cabinetThermal performanceFrost formationHeat loadsThis paper reports the results of experimental tests performed according to ISO 23953 in an open multideck display cabinet with dual air curtain to evaluate the impact of the evaporator fins arrangement pattern on the overall thermal performance. Experimental laboratory tests were performed on climate class no. 3 (25 °C and 60%) with three different evaporator configurations. The thermal exchange area was the same among the three models to keep the aluminum fins and cooper tubes cost constant. The study investigates the increase on the operation time before defrost and the minimization of the latent thermal load due water condensation and freezing between the evaporator fins. Compared to the uniform fin pitch, it was possible to reduce 18% the frost mass and, thus, increasing the refrigeration time between defrosts and decreasing 14% the total heat load. However, an increase on the air (+0.6 °C) and product temperatures (+1.9 °C) due to an inefficient heat exchange, leads to new analysis and assessments related to the residence time between the fins and the airflow in order to keep the temperatures low at the refrigerated space and thus ensuring food safety.ElsevieruBibliorumHeidinger, Gustavo GaldiNascimento, Samuel Mariano doGaspar, Pedro DinisSilva, Pedro Dinho da2019-10-18T10:53:30Z20182018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/7285eng10.1016/j.applthermaleng.2018.04.038metadata 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:RCAAP2023-12-15T09:46:31Zoai:ubibliorum.ubi.pt:10400.6/7285Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:47:50.180226Repositório 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 study of the fins arrangement pattern of refrigerated display cabinet evaporator towards thermal performance improvement |
title |
Experimental study of the fins arrangement pattern of refrigerated display cabinet evaporator towards thermal performance improvement |
spellingShingle |
Experimental study of the fins arrangement pattern of refrigerated display cabinet evaporator towards thermal performance improvement Heidinger, Gustavo Galdi Fins arrangement pattern Open refrigerated display cabinet Thermal performance Frost formation Heat loads |
title_short |
Experimental study of the fins arrangement pattern of refrigerated display cabinet evaporator towards thermal performance improvement |
title_full |
Experimental study of the fins arrangement pattern of refrigerated display cabinet evaporator towards thermal performance improvement |
title_fullStr |
Experimental study of the fins arrangement pattern of refrigerated display cabinet evaporator towards thermal performance improvement |
title_full_unstemmed |
Experimental study of the fins arrangement pattern of refrigerated display cabinet evaporator towards thermal performance improvement |
title_sort |
Experimental study of the fins arrangement pattern of refrigerated display cabinet evaporator towards thermal performance improvement |
author |
Heidinger, Gustavo Galdi |
author_facet |
Heidinger, Gustavo Galdi Nascimento, Samuel Mariano do Gaspar, Pedro Dinis Silva, Pedro Dinho da |
author_role |
author |
author2 |
Nascimento, Samuel Mariano do Gaspar, Pedro Dinis Silva, Pedro Dinho da |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
uBibliorum |
dc.contributor.author.fl_str_mv |
Heidinger, Gustavo Galdi Nascimento, Samuel Mariano do Gaspar, Pedro Dinis Silva, Pedro Dinho da |
dc.subject.por.fl_str_mv |
Fins arrangement pattern Open refrigerated display cabinet Thermal performance Frost formation Heat loads |
topic |
Fins arrangement pattern Open refrigerated display cabinet Thermal performance Frost formation Heat loads |
description |
This paper reports the results of experimental tests performed according to ISO 23953 in an open multideck display cabinet with dual air curtain to evaluate the impact of the evaporator fins arrangement pattern on the overall thermal performance. Experimental laboratory tests were performed on climate class no. 3 (25 °C and 60%) with three different evaporator configurations. The thermal exchange area was the same among the three models to keep the aluminum fins and cooper tubes cost constant. The study investigates the increase on the operation time before defrost and the minimization of the latent thermal load due water condensation and freezing between the evaporator fins. Compared to the uniform fin pitch, it was possible to reduce 18% the frost mass and, thus, increasing the refrigeration time between defrosts and decreasing 14% the total heat load. However, an increase on the air (+0.6 °C) and product temperatures (+1.9 °C) due to an inefficient heat exchange, leads to new analysis and assessments related to the residence time between the fins and the airflow in order to keep the temperatures low at the refrigerated space and thus ensuring food safety. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018 2018-01-01T00:00:00Z 2019-10-18T10:53:30Z |
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/10400.6/7285 |
url |
http://hdl.handle.net/10400.6/7285 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1016/j.applthermaleng.2018.04.038 |
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 |
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1799136373423210496 |