Methodology for Determining the Optimal Size for a South-Facing Horizontal Visor Based on Different Design Periods

  • Xiangrong Zhang
  • Yan Liu
  • Liu YangEmail author
  • Chen Zhang
  • Tang Liu
Conference paper
Part of the Environmental Science and Engineering book series (ESE)


Reasonable shading measures can reduce the solar radiation and the cooling load in summer. Due to the outdoor climatic conditions, solar elevation angles and azimuth angles change with time, and the effect of the sun shading design is closely related to the design period. To the authors’ knowledge, little research work reported in the opening literature has been made on quantitative analysis of differences in shading evaluation under different design periods. In this paper, the analysis is conducted in five typical cities in hot summer and cold winter zone of China (Nanjing, Shanghai, Wuhan, Changsha and Guilin). Firstly, different design periods are obtained according to different shading requirements. Then, performing a quantitative analysis on the sun shading effects of the south-facing horizontal visors in different design periods is based on the self-coding. Finally, according to the shading effects, the optimal sizes for south-facing horizontal visors are obtained. These results can provide references for the shading design.


Sun shading Solar radiation Horizontal visor Quantitative analysis 



This work was supported by “the 13th Five-Year” National Science and Technology Major Project of China (No. 2018YFC0704500) and the Key Project of Natural Science Foundation of China (No. 51838011).


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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Xiangrong Zhang
    • 1
    • 2
  • Yan Liu
    • 1
    • 2
  • Liu Yang
    • 1
    • 2
    Email author
  • Chen Zhang
    • 1
    • 2
  • Tang Liu
    • 1
    • 2
  1. 1.State Key Laboratory of Green Building in Western ChinaXi’an University of Architecture and TechnologyXi’anChina
  2. 2.School of ArchitectureXi’an University of Architecture and TechnologyXi’anChina

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