Abstract
Gymnasium are typically large-span buildings with abundant solar energy resources due to their extensive roof surface. However, relevant research on this topic has not been thoroughly conducted to investigate the effect of the geometric shape of gymnasium buildings on their solar potential. In this paper, an investigation of the geometric shape effect on the solar potential of gymnasium buildings is presented. A three-dimensional radiation transfer model coupled with historical meteorological data was established to estimate the real-time solar potential of the roof of a gymnasium building. The rooftop solar potential of three typical building foundation shapes and different types of roof shapes that have evolved was systematically analyzed. An annual solar potential cloud map of each gymnasium building is generated. The monthly and annual average solar radiation intensities of the different types of roof shapes are investigated. Compared to the optimal tilt angle, the maximum decrease in the average radiation intensity reached −20.42%, while the minimum decline was −8.64% for all types of building shapes. The solar energy potential fluctuated by up to 11% across the various roof shapes, which indicate that shape selection is of vital importance for integrated photovoltaic gymnasium buildings. The results presented in this work are essential for clarifying the effects of the geometric shape of gymnasium buildings on the solar potential of their roofs, which provide an important reference for building design.
Highlights
The term large-span buildings usually refers to buildings with a span of more than 30 m, which is common for theatres, stadiums, gymnasiums, exhibition halls, city halls, airports and other large public civil buildings
We focus on the effects of the geometric shapes of gymnasium buildings on their solar potential
The results presented in this work are essential to clarify the effects of the geometric shapes of gymnasium buildings on the solar potential of their roof, which provides an important reference for building design
Summary
The term large-span buildings usually refers to buildings with a span of more than 30 m, which is common for theatres, stadiums, gymnasiums, exhibition halls, city halls, airports and other large public civil buildings. The operation of large-span buildings inevitably requires consumption of a great amount of energy [1]. With the increasing demand for green building ratings, the utilization of rooftop solar energy appears to be a promising energy conservation option for these buildings [2]. In the 1990s, the green building concept was proposed at the United Nations Conference on Environment and Development [3]. After more than 30 years of developments, the implementation of green buildings has gradually become a global consensus [4]. As construction energy savings are an imperative trend in architectural evolution, there is increasing interest in designing solar energy integrated buildings worldwide
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