Nonuniform Woven Solar Shading Screens: Shading, Mechanical, and Daylighting Performance

Yao Lu, Hankun Lin, Siwei Liu and Yiqiang Xiao
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Yao Lu: Faculty of Architecture, South China University of Technology, Guangzhou 510640, China
Hankun Lin: Faculty of Architecture, South China University of Technology, Guangzhou 510640, China
Siwei Liu: Faculty of Architecture, South China University of Technology, Guangzhou 510640, China
Yiqiang Xiao: Faculty of Architecture, South China University of Technology, Guangzhou 510640, China

Sustainability, 2019, vol. 11, issue 20, 1-19

Abstract: This study investigated the potential of using a nonuniform woven panel with nonuniform strips—thick sticks and thin battens—as an external solar shading screen that addressed daylighting, shading, and mechanical performance factors. The sustainable material, namely, bamboo, was used as the demonstration material for the screen. An on-site experiment and ANSYS simulation were carried out to investigate the basic solar optical performance and structural strength of the proposed screen, respectively. Then, a series of daylighting simulations were conducted to optimize the configuration of the screen. The results showed that the nonuniform woven solar shading screen reduced up to 80.3% of the solar radiation gain in a room during summer months while ensuring a relatively even distribution of useful daylight during the year. Moreover, the screen effectively reduced the negative impact of glare to a level below “imperceptible” and enabled a relatively clear view through the window and shading. Regarding the structural strength, the screen with a size smaller than or equal to 1 × 1 m withstood a wind load of 12 m/s. Furthermore, this study proposed two optimal configurations: a screen woven of square sticks and battens with a distance of 10 mm between them, and a screen woven of round sticks and battens with a distance of 8 mm between them. This study illustrated the superiority of the nonuniform woven solar shading screens, which supports a wider application of solar shading screens made of other materials with similar structures and reflectance values.

Keywords: nonuniform woven panel; solar shading screen; bamboo; solar optical properties; structural strength; daylighting performance (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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