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The cell coverage ratio (CCR) and window-to-wall ratio (WWR) of the STPV system have a significant impact on building energy consumption. However, improper Semi-Transparent Photovoltaic (STPV) configurations may exacerbate the energy shortages experienced in Lhasa. This study employed WINDOW7.8 and DesignBuilder7.0 to investigate the impact of CCR and WWR on energy consumption in residential buildings. The results indicate that CCR and WWR exhibit synergistic effects on net energy consumption. When CCR < 0.4, the net energy consumption exhibits a V-shaped curve in response to variations in WWR. When CCR > 0.4, net energy consumption steadily decreases as WWR increases. For WWR between 40% and 70%, photovoltaic glass with a CCR of 0.6 is recommended. This study provides recommendations for selecting and designing photovoltaic glass for residential buildings in Lhasa, supporting the zero-carbon building initiative.

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Study on the Influence of Cell Coverage Ratio and Window-To-Wall Ratio of Semi-Transparent Photovoltaic Glass Systems on the Energy Performance of Residential Buildings in Lhasa

  • 会议论文

  • 发表日期：

    2025年

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  • Luyang Zhong,
  • Jingyuan Xu,
  • Bo Zhang,
  • Lixing Chen,
  • Yingzi Zhang

摘要

The cell coverage ratio (CCR) and window-to-wall ratio (WWR) of the STPV system have a significant impact on building energy consumption. However, improper Semi-Transparent Photovoltaic (STPV) configurations may exacerbate the energy shortages experienced in Lhasa. This study employed WINDOW7.8 and DesignBuilder7.0 to investigate the impact of CCR and WWR on energy consumption in residential buildings. The results indicate that CCR and WWR exhibit synergistic effects on net energy consumption. When CCR < 0.4, the net energy consumption exhibits a V-shaped curve in response to variations in WWR. When CCR > 0.4, net energy consumption steadily decreases as WWR increases. For WWR between 40% and 70%, photovoltaic glass with a CCR of 0.6 is recommended. This study provides recommendations for selecting and designing photovoltaic glass for residential buildings in Lhasa, supporting the zero-carbon building initiative.