Optimum Tilt Angles of Modules on Louvered PV Façade in Changsha, China

Abstract:

This paper aims to evaluate the optimum tilt angle of PV modules on louvered PV façade in Changsha - a city located at middle and low latitude, and representative cloudy climate conditions in Central China. Within these climate conditions, this research discusses the influences of external and internal factors on photoelectric conversion efficiency and shading effect of louvered PV façade. The research result shows that the external and internal design factors of louvered PV façade take opposite effects on the louver tilt angle. Under the influence of external factors, the preferred value interval will be β_opt≈Φ and β_opt<Φ, whereas under the influence of the internal design factors, the preferred value interval is Φ and above. Taking all factors into consideration, the optimal tilt angle of the PV louver in Changsha is selected as 30°.

• Periodical: Advanced Materials Research (Volumes 671-674)
• Pages: 2135-2140
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.671-674.2135
• Online since: March 2013
• Authors: Shao Yao He, Shao Yao Tang, Wen Liu
• Keywords: Building-Integrated Photovoltaics, Glass Curtain Wall, Louvered Façade, Photovoltaic Facade, Solar Energy, Tilt Angle

References

[1] H. Gunerhan, A. Hepbasli. Determination of the optimum tilt angle of solar collectors for building applications. Building and Environment. 42 (2007) 779-783.

DOI: 10.1016/j.buildenv.2005.09.012

[2] H. Nakamura, T. Yamada, T. Sugiura, K. Sakuta, and K. Kurokawa. Data analysis on solar irradiance and performance characteristics of solar modules with a test facility of various tilted angles and directions. Solar Energy Materials & Solar Cells. 67 (2001).

DOI: 10.1016/s0927-0248(00)00331-7

[3] F. Jafarkazemi, S.A. Saadabadi and H. Pasdarshahri. The optimum tilt angle for flat-plate solar collectors in Iran. Journal of Renewable and Sustainable Energy. 4(1) (2012) 103-118.

DOI: 10.1063/1.3688024

[4] R.S. Tang, U. Tong. Optimum tilt angle for solar collectors used in China. Applied Energy. 79 (2004) 239-248.

DOI: 10.1016/j.apenergy.2004.01.003

[5] S.Y. He, Y.J. Chu S.S. Li, Y.J. Cai. Technology research and application practice on solar photovoltaic curtain wall―take Changsha"zhongjian mansion"as exmple. Architectural Journal. 2 (2009) 102-103.

[6] J.N. Avaritsiotis. The efficient exploitation of photovoltaic electricity. Solar Cells. 14(3) (1985) 261-279.

DOI: 10.1016/0379-6787(85)90062-6

[7] ISO 15469/CIE S003: Spatial distribution of daylight-CIE standard overcast sky and clear sky, (1996).

DOI: 10.3403/01451866u

[8] ISO 15469/CIE S011/E-2003: Spatial distribution of daylight-CIE standard general sky, (2004).

DOI: 10.25039/ds011.2003