Study on the Degree and Mechanism of Solar Shading Impacts from Rooftop Structures in the Solar Collector Layout Area

  • Luting Xu
  • Enshen Long
  • Xuefei Xiao
  • Ziyun WangEmail author
Conference paper
Part of the Environmental Science and Engineering book series (ESE)


The authors defined four physical quantities’ shading rates, namely the time integral of insolation area, the direct solar radiation, the diffuse solar radiation, and the incident solar radiation. Taking a practical project’s roof in western Sichuan as an object, this paper studied shading rates from roof structures on the solar collector layout area in the heating season and quantified shading impacts from different time dimensions. The results show that shading rates are maximum in the coldest month, December, and that is smaller in the early and late of the heating season. In December, shading rates of the time integral of insolation area and the incident solar radiation are 53% and 30%, respectively, which indicate that shading effects of roof structures cannot be ignored in the heating system design. The research results are of great reference value for the installation optimization of collectors and the reasonable matching of the heating system.


Rooftop structures Shading rate The time integral of insolation area Direct solar radiation Diffuse solar radiation Incident solar radiation 


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© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Institute for Disaster Management and Reconstruction, Sichuan UniversityChengduChina
  2. 2.College of Architecture and EnvironmentSichuan UniversityChengduChina
  3. 3.Key Laboratory of Deep Earth Science and EngineeringSichuan University, Ministry of EducationChengduChina

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