Urban stormwater harvesting - sensitivity of a storage behaviour model
Urban stormwater harvesting - sensitivity of a storage behaviour model
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DOI：
10.1016/j.envsoft.2007.09.006
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发表时间：
2008-06-01
影响因子：
4.9
通讯作者：
Fletcher, T. D.
中科院分区：
文献类型：
--
作者：
Mitchell, V. G.;McCarthy, D. T.;Fletcher, T. D.
收集城市雨水以满足非饮用水需求正在成为一种可行的选择，作为增加日益紧张的城市供水系统的一种手段。本文研究了城市雨水收集系统的容量-产量-可靠性关系对所用行为建模方法的变化的敏感性，重点是单个水库系统的存储和需求组件。其目的是增进我们对评估这种体积可靠性/存储容量关系的适当计算方法的理解。根据两种不同的气候和两种不同的水需求模式，制定了四种参考情景。进行了敏感性分析，其中考虑了以下计算、存储和需求参数：产量-溢出顺序、模拟时间步长、降雨记录长度、初始存储容量、开放/封闭存储表面、死存储容量、需水量的日和周模式以及季节需水量的年际变化。结果发现，几个参数对所测试情景的体积可靠性的估计没有显著影响，而最显著的三个参数是：降雨记录的长度、季节需求的年际变化和储存面类型。提出了关于使用的最小降雨记录长度的建议，以及在开业商店的情况下纳入季节性需求的年际变化和净蒸发损失的建议。(C)2007爱思唯尔有限公司。保留所有权利。
The harvesting of urban stormwater to supply non-potable water demands is emerging as a viable option, amongst others, as a means to augment increasingly stressed urban water supply systems. This paper investigates the sensitivity of an urban stormwater harvesting system's capacity-yield-reliability relationship to variations in the behaviour modelling method used, focusing on the storage and demand components of a single reservoir system. The aim is to enhance our understanding of the appropriate computational method for assessing such volumetric reliability/storage capacity relationships. Four reference scenarios were developed, based on two different climates and two different water demand patterns. A sensitivity analysis was conducted, which considered the following computational, storage and demand parameters: yield-spillage order, modelling time-step, length of rainfall record, initial storage volume, open/closed storage surface, dead storage volume, diurnal and weekly pattern of water demand, and inter-annual variability of seasonal water demand. It was found that several parameters had an insignificant impact on the estimation of volumetric reliability for the scenarios tested, whilst the three most significant parameters were: length of rainfall record, inter-annual variability of seasonal demand, and storage surface type. Recommendations about the minimum length of rainfall record used and the inclusion of both the inter-annual variability of seasonal demand and net evaporative losses in the case of an open store are made. (c) 2007 Elsevier Ltd. All rights reserved.