Heat and Water Vapour Transfer Trough the Envelope of a Cold chamber

Bibliographic Details
Main Author: Clito Afonso
Publication Date: 2016
Format: Article
Language: eng
Source: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Download full: https://hdl.handle.net/10216/107723
Summary: The diffusion of water vapour in the atmospheric air through the elements of the envelope of a cold storage room, causedby the pressure gradient between the external and internal environment is inevitable in most situations. In fact, if the conditions in theinterior of an envelope element are such as to enable the vapour freezing of the migrant water, the increase in volume from theformation of ice will causes the deformation of this element with very serious consequences, which can go up to its partial or totaldestruction. In this scenario, readily note the importance of vapour barriers associated with a properly designed insulation, tend to notonly reduce the amount of water diffused, but also prevent the achievement of the conditions for freeze inside the engaging elements.The purpose of this work is to formulate the procedure for design of vapour barriers connected with the design of optimized thermalinsulation, and then apply it to a cold chamber located in Portugal. Vapour barriers and the procedure for its design are bothmandatory. The required thickness of the vapour barrier is relatively small, and the most appropriate insolation (maintaining theoptimal thickness) is the black cork agglomerate.
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spelling Heat and Water Vapour Transfer Trough the Envelope of a Cold chamberThe diffusion of water vapour in the atmospheric air through the elements of the envelope of a cold storage room, causedby the pressure gradient between the external and internal environment is inevitable in most situations. In fact, if the conditions in theinterior of an envelope element are such as to enable the vapour freezing of the migrant water, the increase in volume from theformation of ice will causes the deformation of this element with very serious consequences, which can go up to its partial or totaldestruction. In this scenario, readily note the importance of vapour barriers associated with a properly designed insulation, tend to notonly reduce the amount of water diffused, but also prevent the achievement of the conditions for freeze inside the engaging elements.The purpose of this work is to formulate the procedure for design of vapour barriers connected with the design of optimized thermalinsulation, and then apply it to a cold chamber located in Portugal. Vapour barriers and the procedure for its design are bothmandatory. The required thickness of the vapour barrier is relatively small, and the most appropriate insolation (maintaining theoptimal thickness) is the black cork agglomerate.20162016-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10216/107723eng1934-893210.17265/2162-5298/2016.07.004Clito Afonsoinfo: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:RCAAP2023-11-29T14:03:45Zoai:repositorio-aberto.up.pt:10216/107723Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:53:47.470236Repositório 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 Heat and Water Vapour Transfer Trough the Envelope of a Cold chamber
title Heat and Water Vapour Transfer Trough the Envelope of a Cold chamber
spellingShingle Heat and Water Vapour Transfer Trough the Envelope of a Cold chamber
Clito Afonso
title_short Heat and Water Vapour Transfer Trough the Envelope of a Cold chamber
title_full Heat and Water Vapour Transfer Trough the Envelope of a Cold chamber
title_fullStr Heat and Water Vapour Transfer Trough the Envelope of a Cold chamber
title_full_unstemmed Heat and Water Vapour Transfer Trough the Envelope of a Cold chamber
title_sort Heat and Water Vapour Transfer Trough the Envelope of a Cold chamber
author Clito Afonso
author_facet Clito Afonso
author_role author
dc.contributor.author.fl_str_mv Clito Afonso
description The diffusion of water vapour in the atmospheric air through the elements of the envelope of a cold storage room, causedby the pressure gradient between the external and internal environment is inevitable in most situations. In fact, if the conditions in theinterior of an envelope element are such as to enable the vapour freezing of the migrant water, the increase in volume from theformation of ice will causes the deformation of this element with very serious consequences, which can go up to its partial or totaldestruction. In this scenario, readily note the importance of vapour barriers associated with a properly designed insulation, tend to notonly reduce the amount of water diffused, but also prevent the achievement of the conditions for freeze inside the engaging elements.The purpose of this work is to formulate the procedure for design of vapour barriers connected with the design of optimized thermalinsulation, and then apply it to a cold chamber located in Portugal. Vapour barriers and the procedure for its design are bothmandatory. The required thickness of the vapour barrier is relatively small, and the most appropriate insolation (maintaining theoptimal thickness) is the black cork agglomerate.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-01-01T00:00:00Z
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dc.identifier.uri.fl_str_mv https://hdl.handle.net/10216/107723
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dc.language.iso.fl_str_mv eng
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dc.relation.none.fl_str_mv 1934-8932
10.17265/2162-5298/2016.07.004
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