PCM thermal insulation in buildings

dc.contributor.authorIsmail, K. A R
dc.contributor.authorCastro, J. N C [UNESP]
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFaculdade de Engenharia Térmica e Fluidos
dc.date.accessioned2014-05-27T11:18:16Z
dc.date.available2014-05-27T11:18:16Z
dc.date.issued1997-11-01
dc.description.abstractThis paper presents the results of a numerical and experimental study of phase change material (PCM) filled walls and roofs under real operational conditions to achieve passive thermal comfort. The numerical part of the study was based on a one-dimensional model for the phase change problem controlled by pure conduction. Real radiation data was used to determine the external face temperature. The numerical treatment was based upon using finite difference approximations and the ADI scheme. The results obtained were compared with field measurements. The experimental set-up consisted of a small room with movable roof and side wall. The roof was constructed in the traditional way but with the phase change material enclosed. Thermocouples were distributed across the cross section of the roof. Another roof, identical but without the PCM, was also used during comparative tests. The movable wall was also constructed as is done traditionally but with the PCM enclosed. Again, thermocouples were distributed across the wall thickness to enable measurement of the local temperatures. Another wall, identical but without the PCM, was also used during comparative tests. The PCM used in the numerical and experimental tests was composed of a mixture of two commercial grades of glycol in order to obtain the required fusion temperature range. Comparison between the simulation results and the experiments indicated good agreement. Field tests also indicated that the PCM used was adequate and that the concept was effective in maintaining the indoor temperature very close to the established comfort limits. Further economical analysis indicated that the concept could effectively help in reducing the electric energy consumption and improving the energy demand pattern. © 1997 by John Wiley & Sons, Ltd.en
dc.description.affiliationDepartamento de Engenharia Térmica e Fluidos Faculdade de Engenharia Mecânica - UNICAMP, Caixa Postal 6122, CEP 13083-970, Campinas (SP)
dc.description.affiliationDepartamento de Energia Faculdade de Engenharia - UNESP, Guaratinguetá (SP)
dc.description.affiliationDepartamento de Engenharia Térmica e Fluidos Faculdade de Engenharia Térmica e Fluidos, Caixa Postal 6122, CEP 13083-970, Campinas (SP)
dc.description.affiliationUnespDepartamento de Energia Faculdade de Engenharia - UNESP, Guaratinguetá (SP)
dc.format.extent1281-1296
dc.identifierhttp://www.editlib.org/p/45129/
dc.identifier.citationInternational Journal of Energy Research, v. 21, n. 14, p. 1281-1296, 1997.
dc.identifier.issn0363-907X
dc.identifier.lattes7321030858845514
dc.identifier.scopus2-s2.0-0010435566
dc.identifier.urihttp://hdl.handle.net/11449/65221
dc.language.isoeng
dc.relation.ispartofInternational Journal of Energy Research
dc.relation.ispartofjcr3.009
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectPassive comfort
dc.subjectPCM wall
dc.subjectThermal barrier
dc.subjectThermal roof
dc.titlePCM thermal insulation in buildingsen
dc.typeArtigo
unesp.author.lattes7321030858845514
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Guaratinguetápt
unesp.departmentEnergia - FEGpt

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