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Energy Efficient Building
with the glazing system without SCWF, the installation of film PR70EXT (𝜏𝑣=70%; 𝑔=0.48) has the highest energy performance, enabling to achieve the highest reduction (38%) of the annual electricity consumption (Figure 3Figure 3), annual electric peak demand load and annual CO2 emissions. When considering the different exterior façade orientations of the building, the highest energy performance was obtained with the film PR70EXT installed on a West oriented window.
Figure 1 – Office’s glazing systems identified on the exterior façade (Southeast) of the building.
Figure 2 – 3D Simulation model of the case study’s offices, using SketchUp.
4. Acknowledgment
Figure 3 – Annual electricity consumption for considered glazing systems.
The authors would like to thank the office rooms‘ occupants and Impersol company for the collaboration in the present study. The second author wishes to acknowledge the support of FCT (Foundation for Science and Technology) PhD Grant FCT PD/BD/127848/2016.
5. References
Lourenço, D. L. (October 2016). Experimental Study on the Thermal and Optical Performance of Glazing Systems with Solar Control Window Films, MSc Thesis, Department of Civil Engineering, Architecture and Georesources, Instituto Superior Técnico, Universidade de Lisboa.
Yin, R., Xu, P., & Shen, P. (February 2012). Case study: Energy savings from solar window film in two commercial buildings in Shanghai. Energy and Buildings, 45, S. 132-140. doi:doi.org/10.1016/j.enbuild.2011.10.062
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