Research on Rooftop Rainwater Power Generation System in Guilin Urban Areas

在桂林“双碳”目标背景下，提出了“光水互补”的能源供应模式，探讨了城市高楼雨水发电的可行性。根据桂林地区的气候以及降雨量特点，分析了桂林城区雨水资源利用潜力。以桂林市典型小区建筑物为例设计了一套高楼雨水发电系统。根据建筑物特点完成了雨水过滤收集装置与雨水发电储电装置的设计及选型。探讨了系统的技术可行性、经济性和环境效益，为桂林市实现绿色低碳发展提供了实践参考，也为其他类似地区探索可再生能源综合利用提供新的思路和方法。Against the backdrop of Guilin’s dual-carbon goals, a “solar-hydro complementary” energy supply model is proposed to explore the feasibility of rainwater power generation in urban high-rise buildings. Based on the climate and rainfall characteristics of the Guilin area, the potential for rainwater resource utilization in the urban area of Guilin was analyzed. A high-rise rainwater power generation system was designed taking a typical residential building in Guilin City as an example. Rainwater filtration and collection devices, as well as rainwater power generation and storage devices, were designed and selected according to the characteristics of the building. The technical feasibility, economic viability, and environmental benefits of the system were discussed, providing a practical reference for Guilin City to achieve green and low-carbon development, and also offering new ideas and methods for other similar areas to explore the comprehensive use of renewable energy.