Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Building Services Engineering | en_US |
dc.contributor.advisor | Yang, Hongxing (BSE) | - |
dc.creator | Sun, Mingqing | - |
dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/8227 | - |
dc.language | English | en_US |
dc.publisher | Hong Kong Polytechnic University | - |
dc.rights | All rights reserved | en_US |
dc.title | Numerical analysis of heat transfer and airflow in double skin facades integrated with amorphous silicon PV cells | en_US |
dcterms.abstract | In 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.extent | viii, 46 pages : color illustrations | en_US |
dcterms.isPartOf | PolyU Electronic Theses | en_US |
dcterms.issued | 2015 | en_US |
dcterms.educationalLevel | All Master | en_US |
dcterms.educationalLevel | M.Eng. | en_US |
dcterms.LCSH | Heat -- Transmission. | en_US |
dcterms.LCSH | Fluid dynamics. | en_US |
dcterms.LCSH | Facades. | en_US |
dcterms.LCSH | Building-integrated photovoltaic systems. | en_US |
dcterms.LCSH | Hong Kong Polytechnic University -- Dissertations | en_US |
dcterms.accessRights | restricted access | en_US |
Files in This Item:
File | Description | Size | Format | |
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b28261355.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 1.17 MB | Adobe PDF | View/Open |
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