Energy Savings Potential of Semitransparent Photovoltaic Skylights under Different Climate Conditions in China

Li Zhu, Peng Wang, Yujiao Huo, Wei Tian, Yong Sun and Baoquan Yin
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Li Zhu: School of Architecture, Tianjin University, Tianjin 300072, China
Peng Wang: School of Architecture, Tianjin University, Tianjin 300072, China
Yujiao Huo: School of Architecture, Tianjin University, Tianjin 300072, China
Wei Tian: School of Mechanical Engineering, Tianjin University of Science & Technology, Tianjin 300222, China
Yong Sun: School of Architecture, Tianjin University, Tianjin 300072, China
Baoquan Yin: School of Architecture, Tianjin University, Tianjin 300072, China

Energies, 2022, vol. 15, issue 7, 1-17

Abstract: Due to the limited available envelope area, height-constrained buildings integrated with photovoltaics require that more attention be given to the effective use of roofs. Thus, it is crucial to study the energy savings potential of previously neglected semitransparent photovoltaic (STPV) skylights. In this paper, the net energy consumption (NEC) of a room with STPV skylights and energy superiority compared to a reference window were investigated. The energy savings potential was then calculated for five representative cases located in different climate zones and daylight zones, according to the mandatory codes to be implemented in April 2022. Through a global sensitivity analysis, the extent to which each component of the NEC affects the energy savings potential was evaluated. The results indicate that STPV skylights exhibit promising energy savings potential in China. In temperate zones with excellent daylight conditions, an energy savings potential of 0.21 to 2.55 can be achieved, while the maximum energy savings rate (ESR) for the other four cases ranges from 0.52 to 1.1. The effect of electricity power generation (EPG) on the energy savings potential is most pronounced, except for that of STPV skylights on sloped roofs in hot summer and cold winter zones with poor daylight.

Keywords: semitransparent photovoltaic (STPV); buildings integrated with photovoltaic; energy savings potential; global sensitivity analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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