Performance assessment of rainwater harvesting systems: Influence of operating algorithm, length and temporal scale of rainfall time series
Performance assessment of rainwater harvesting systems: Influence of operating algorithm, length and temporal scale of rainfall time series
复制标题
雨水收集系统的性能评估：操作算法、降雨时间序列的长度和时间尺度的影响
DOI：
10.1016/j.jclepro.2020.120044
复制
发表时间：
2020-04
影响因子：
11.1
通讯作者：
Jun Wang
中科院分区：
文献类型：
--
作者：
Shouhong Zhang;Xueer Jing;Tongjia Yue;Jun Wang
雨水收集（RH）为缓解城市水资源短缺提供了一个重要的替代方案，同时也提供了雨水控制的好处。在这项研究中，开发了一个水文模型，并应用于系统地研究了操作算法的影响（例如，“溢前产量”，YBS和“溢后产量”，YAS），降雨时间序列的长度和时间尺度对RH节水和雨水控制性能的评估，用于西雅图，美国的案例研究应用。三个性能指标（节水效率，可靠性和雨水收集效率）进行了分析，考虑四个水需求的情况。结果表明，YBS算法高估了这三个指标，而YAS算法则倾向于低估它们。对于较大储罐的RH系统，采用较小的模拟时间步长可以减小操作算法选择的影响。使用每日时间序列获得的指数接近于使用每小时时间序列产生的指数，而使用每月时间序列产生的结果则不准确。随着模拟时间序列长度的增加，使用短期模拟周期获得的指标值与参考49年周期之间的差异减小。代表性的降雨量时间序列长度为13，15，17，15年的厕所冲洗，洗衣，草坪灌溉，和混合物的需求，分别确定和验证是足够的，以产生等效的指标值，使用30年的时间序列。这些结果为RH系统连续模拟和性能评估中操作算法、降雨时间序列长度和时间尺度的合理选择提供了参考。
Rainwater harvesting (RH) provides an important alternative for alleviating urban water scarcity while also providing stormwater control benefits. In this study, a hydrologic model was developed and applied to systematically investigated the influence of operating algorithms (e.g., “yield before spillage”, YBS and “yield after spillage”, YAS), length and temporal scale of rainfall time series on the assessment of water saving and stormwater control performance of RH for a case study application in Seattle, USA. Three performance indices (water saving efficiency, reliability, and stormwater capture efficiency) were analyzed considering four water demand scenarios. The results show that the YBS algorithm results in overestimation of the three indices while the YAS tends to underestimate them. The influence of operating algorithm selection can be diminished by using smaller simulation time steps for RH systems with larger tanks. The indices obtained using daily time series are close to those generated with the hourly ones, while the use of monthly time series generates inaccurate results. As the time series length of simulation increases, the difference between the indicator values obtained using short-term simulation periods and the reference 49-year period reduces. Representative rainfall time series length of 13, 15, 17, and 15 years for toilet flushing, laundry, lawn irrigation, and mixture of the demands, respectively, is determined and verified to be sufficient to generate equivalent indicator values to those obtained using a 30-year long time series. These results provided reference for proper selection of operating algorithms, length and temporal scale of rainfall time series for continuous modeling and performance assessment of RH systems.
登录
查看更多内容
气候变化对城市雨水收集系统的影响
影响因子：
9.8
作者：
Zhang Shouhong;Zhang Jianjun;Yue Tongjia;Jing Xueer
通讯作者：
Jing Xueer
影响因子：
11.1
作者：
J. C. Y. Leong;Poovarasi Balan;M. Chong;P. E. Poh
通讯作者：
J. C. Y. Leong;Poovarasi Balan;M. Chong;P. E. Poh
影响因子：
11.1
作者：
Sample, David J.;Liu, Jia
通讯作者：
Liu, Jia
影响因子：
6.4
作者：
Rui Guo;Yiping Guo
通讯作者：
Rui Guo;Yiping Guo
影响因子：
6.4
作者：
A. Palla;I. Gnecco;L. Lanza
通讯作者：
A. Palla;I. Gnecco;L. Lanza