Power generation lighting device based on gravity potential energy of rainwater pipeline

4th International Conference on Energy Equipment Science and Engineering

Cao, Licai^1 ; Wang, Zhihao^1 ; Xiong, Xinhong^1

Department of Mechanical Engineering and Automation, Wuhan University of Technology, Wuhan, Hubei

430070, China^1

关键词: Collection device;    Generate electricity;    Gravitational potential;    Gravity potential;    Green energy savings;    Mechanical energies;    Power generating devices;    Power generation devices;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/242/2/022042/pdf
DOI  :  10.1088/1755-1315/242/2/022042

来源: IOP

【 摘 要 】

China's society is developing rapidly with many tall buildings rising in the city. When it rains, the huge gravitational potential contained in the water on their roof is often wasted, especially in the south where rainfall is abundant. Therefore, designing a device that relies on the water potential energy to generate electricity is conducive to make full use of the abundant mechanical energy. It is a novel green energy-saving method with a great prospect.In response to this situation, this project designed power generation device based on gravity potential energy of rainwater pipeline. The device consists of two parts: a collecting device and a power generating device. The rainwater collecting device is placed in the outlet pipe of the highest floor, which is accumulated for the power generating device. The power generation device is installed at the lowest floor outlet pipe, which is used to generate electricity by using the rain energy collected by the high-level collection device. Therefore, the power generating device has two working states: when the amount of water is large, the device maintains on, and the generator works continuously; when the amount of water is small, power generating works only after the water volume collected reaches a threshold value, so the device is in an intermittent working state.Based on the survey data and size of the device, we estimated the economics of the device. If the floor height is 30 m with 10 water pipes in each building, each pipe is equipped with one device, which can replace a street lamp. A street lamp consumes 0.3 degrees of electricity per hour. Assume that the lighting time is 10 hours, and then if this equipment is installed in a building, 10, 950 kWh of electricity can be saved in one year, which shows the high economic and practical benefits of the device.