建立函数图像估算雨水回用系统的雨水回用量

Establishment of Function Graph for Calculating Available Rainwater of Rainwater Recycling System

通过引入集雨系数a、雨水储水系数b,提出了一种估算雨水回用系统雨水回用量的方法。以杭州市的降雨过程为例,对用水过程简化模拟并进行逐日水量平衡计算,建立起反映系数a、b与雨水回用量占用水量的比例R之间关系的函数图像,利用此函数图像可估算杭州及具有相似降雨过程的其他地区雨水回用系统的雨水回用量,并为雨水回用系统基本设计参数的确定和运行效率的评估提供了方法。

A method for calculation of the available rainwater of rainwater recycling system was presented by introducing the rainwater-collection coefficient a and rainwater-storage coefficient b. With data of rainfall in Hangzhou as the example, the function graph for describing the relationship of a and b to the parameter R, percentage of available rainwater in water consumption was established by emulating and simplifying water consumption course and calculating daily water balance. This function graph can be used to calculate available rainwater of rainwater recycling systems in Hangzhou or in regions with similar rainfall condition. It also can be used to guide the design and evaluation of rainwater recycling systems.