Development of an analytical solution for optimum design of RWH systems—A case study in Guangzhou

IF 1.7 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Water and Environment Journal Pub Date : 2024-03-08 DOI:10.1111/wej.12920

Chen Shiguang, Sun Hongwei, Chen Xuebin

引用次数: 0

Abstract

The implementation of rainwater harvesting (RWH) has emerged as a key strategy to cope with the water crisis in urban areas. However, the required design parameters of the RWH system in different buildings vary widely because of the differences in architectural characteristics. In this paper, the relationships between the building characteristics parameters and the optimal tank (Tc) capacity are investigated by simulating the RWH system for more than 120 buildings at different locations in Guangzhou. Explicit expressions relating the optimal storage volume of RWH systems to building characteristics are derived based on nonlinear regression analysis. A set of bivariate exponential equations for estimating the optimal tank size under different building conditions was obtained. The model has a MER of less than 10% for buildings with a C/D ratio between 17.5 and 85. In Guangzhou, the unit cost of an RWH system can be reduced to CNY 2.62/m2 with optimally designed tanks.

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开发 RWH 系统优化设计的分析解决方案--广州案例研究

实施雨水收集（RWH）已成为应对城市地区水资源危机的一项重要战略。然而，由于建筑特点的不同，不同建筑的雨水收集系统所需的设计参数也大相径庭。本文通过模拟广州不同地点 120 多座建筑的 RWH 系统，研究了建筑特征参数与最佳水箱（Tc）容量之间的关系。在非线性回归分析的基础上，推导出了最佳蓄水量与建筑物特征之间的关系表达式。得出了一组双变量指数方程，用于估算不同建筑条件下的最佳水箱尺寸。对于 C/D 比值在 17.5 至 85 之间的建筑物，该模型的误差率小于 10%。在广州，通过优化设计的水箱，RWH 系统的单位成本可降至 2.62 元/平方米。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water and Environment Journal 环境科学-湖沼学

CiteScore

4.80

自引率

0.00%

发文量

审稿时长

18-36 weeks

期刊介绍： Water and Environment Journal is an internationally recognised peer reviewed Journal for the dissemination of innovations and solutions focussed on enhancing water management best practice. Water and Environment Journal is available to over 12,000 institutions with a further 7,000 copies physically distributed to the Chartered Institution of Water and Environmental Management (CIWEM) membership, comprised of environment sector professionals based across the value chain (utilities, consultancy, technology suppliers, regulators, government and NGOs). As such, the journal provides a conduit between academics and practitioners. We therefore particularly encourage contributions focussed at the interface between academia and industry, which deliver industrially impactful applied research underpinned by scientific evidence. We are keen to attract papers on a broad range of subjects including: -Water and wastewater treatment for agricultural, municipal and industrial applications -Sludge treatment including processing, storage and management -Water recycling -Urban and stormwater management -Integrated water management strategies -Water infrastructure and distribution -Climate change mitigation including management of impacts on agriculture, urban areas and infrastructure