期刊
ENERGY AND BUILDINGS
卷 45, 期 -, 页码 132-140出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.enbuild.2011.10.062
关键词
Window film; Glazing system; Electrical consumption; Commercial buildings; Building cooling load
资金
- Shanghai Auto Museum
The objective of this study was to understand the energy savings from applying solar window films in a commercial building with large, curtain wall areas in Shanghai, China. eQUEST was used to simulate the annual building performance with and without the solar window film. The simulation model was calibrated against the measured monthly and daily electrical consumption. The simulation results indicated that two factors significantly influence the effect of the window film. These factors include the position of the installed window film and the configuration of the original glazing system. The effect of the window film on the performance of the curtain wall glazing system varies greatly, depending on the type of film and how it is applied. The film can decrease the shading coefficient and solar heat gain coefficient by 44% and 22% if applied on the outside and inside of the existing windows, respectively. For a double pane, low-E glazing system, the building cooling load through the windows on design day is reduced by 27.5% and 2.2% for outside and inside window films, separately. Adding the window film inside of the curtain wall was not effective because the increased window conductive heat transfer offsets the decreased cooling load from solar radiation. (C) 2011 Elsevier B.V. All rights reserved.
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