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dc.contributorDepartment of Building Services Engineeringen_US
dc.contributor.advisorYang, Hongxing (BSE)-
dc.creatorSun, Mingqing-
dc.identifier.urihttps://theses.lib.polyu.edu.hk/handle/200/8227-
dc.languageEnglishen_US
dc.publisherHong Kong Polytechnic University-
dc.rightsAll rights reserveden_US
dc.titleNumerical analysis of heat transfer and airflow in double skin facades integrated with amorphous silicon PV cellsen_US
dcterms.abstractIn recent years, building energy consumption in space air-conditioning have increased, and the solar heat and loss via glass curtain walls are responsible for a large portion of this load. Apparently the improvements in developing new types of glass curtain wall is needed. During the past years, advanced semi-transparent PV glazing systems have been developed and applied in buildings in HongKong. Semi-transparent building windows integrated with photovoltaics (BIPV), different from conventional PV technology, can not only generate electricity, such see-through amorphous silicon (a-Si) PV facades can also enhance daylight utilization and function as building envelops. Double skin facade technology is reported in this paper. With appropriate optimization measures adopted, such double-glazing facades (DFS) can reduce the heat losses in winter and heat gains in summer respectively via the building envelopes.This dissertation presents a numerical analysis of heat transfer and air flow dynamics based on the preliminary experimental results. Different two-dimension models were performed in Computational Fluid Dynamics platform to investigate the complex phenomenon in velocity and temperature fields with mixed radiation and natural convection heat transfer considered. Standard k-ε turbulence model was employed to solve the problem.Experimental results indicate that the air velocity field is a consequence of non-uniform distribution of the temperature field. The air flow in the cavity affect the thermal behavior and energy performance of the PV-DSF system. The later analysis of the simulation results illustrates that the variation of the air cavity width and inlet opening size considerably affected the total performance of the PV-DSF system. The comparison of the numerical models clarified that the optimum design configuration with cavity width L=0.1m and inlet opening height H0=0.2m achieved outstanding performance in terms of thermal and energy behavior.en_US
dcterms.extentviii, 46 pages : color illustrationsen_US
dcterms.isPartOfPolyU Electronic Thesesen_US
dcterms.issued2015en_US
dcterms.educationalLevelAll Masteren_US
dcterms.educationalLevelM.Eng.en_US
dcterms.LCSHHeat -- Transmission.en_US
dcterms.LCSHFluid dynamics.en_US
dcterms.LCSHFacades.en_US
dcterms.LCSHBuilding-integrated photovoltaic systems.en_US
dcterms.LCSHHong Kong Polytechnic University -- Dissertationsen_US
dcterms.accessRightsrestricted accessen_US

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Please use this identifier to cite or link to this item: https://theses.lib.polyu.edu.hk/handle/200/8227