Calculation Method of Building Solar Heating Efficiency Based on Shape Elements

In order to construct the performance-based design method used by architects in the initial stage of design, the design strategy of building thermal performance with the calculation method of solar heating efficiency was explored. Taking the building height-to-width ratio, height-to-length ratio, and south-facing window-to-wall ratio as the building shape elements, the building solar heating potential function based on the building shape elements was obtained through orthogonal experiments, dynamic energy consumption simulation, and mathematical statistical analysis. After graphing the function, it was found that increasing the aspect ratio and the south-facing window-to-wall ratio could increase the solar heating potential of buildings. For the convenience of designers, a BIM-based building solar heating potential analysis software was developed and applied to actual projects. This research explored the performance-based analysis method at the preliminary stage of building design, provided designers with a collaborative analysis method for design strategy flexibility and energy consumption intensity change law, and improved the construction of a green performance-based design system for buildings.