上海市降雨特性统计与雨水存储池容积计算

介绍了雨水利用系统存储池容积的设计方法.通过统计分析上海市近20年的降雨资料,获得了独立降雨事件的降雨量、降雨历时和降雨间隔的平均值以及各降雨特性参数的概率密度函数,在此基础上运用概率统计方法进行了雨水存储池集蓄效率的分析计算.通过对概率密度函数的积分,获得了不同容积下存储池的集蓄效率及相应的年均集蓄水量.结合雨水利用系统的投资、运行费用与预期水价,可确定相关存储池的合理容积.应用该方法评价了上海世博园区屋面雨水集蓄工程存储池的合理容积.该方法对雨水集蓄利用工程的设计具有普遍意义.

Statistics on Rainfall Properties and Capacity Calculation of Rainwater Storage Tank in Shanghai

The design method for storage capacity of rainwater utilization system Through the statistical analysis on the rainfall information in recent 20 years in Shanghai was introduced. , the mean value of rainfall volume, duration, and interval of individual rainfall event, and the probability density functions of the three parameters were obtained. On this basis, the probability and statistics methods were used to analyze the rainwater collection effectiveness in storage tank. By means of integral of probability density functions, the water collection effectiveness and yearly average water storage in storage tank with different capacity were obtained. Based on the investment, operating cost of rainwater utilization system and the expected water price, the reasonable capacity of storage tank could be determined. This method could be used to evaluate the reasonable capacity of storage tank for the roof rainwater utilization project of Expo Park in Shanghai. This method is of general significance for design of the rainwater harvesting and utilization project.