Water saving potential and economic viability assessment of rainwater harvesting system for four different climatic regions in China

Rainwater is one of the most promising alternative water sources. However, the financial outcomes of the rainwater harvesting (RWH) systems are not always assured as economic performance of RWH systems vary greatly under different climatic conditions.This paper investigates reliability, water saving...

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Autores principales:	Chen Shiguang, Zhang Yu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	benefit–cost ratio climate condition rainwater harvesting system spatial variability tank sizes Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/d7f7a30a748e48d18fd7387efe809abd
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spelling	oai:doaj.org-article:d7f7a30a748e48d18fd7387efe809abd2021-11-06T07:04:52ZWater saving potential and economic viability assessment of rainwater harvesting system for four different climatic regions in China1606-97491607-079810.2166/ws.2020.307https://doaj.org/article/d7f7a30a748e48d18fd7387efe809abd2021-02-01T00:00:00Zhttp://ws.iwaponline.com/content/21/1/386https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Rainwater is one of the most promising alternative water sources. However, the financial outcomes of the rainwater harvesting (RWH) systems are not always assured as economic performance of RWH systems vary greatly under different climatic conditions.This paper investigates reliability, water saving and benefit–cost ratio of an RWH system with different storage tanks and under three distinct climatic conditions (i.e., wet, average and dry year) at four cities in China. It was found that for a standard building (1,600 m2 roof having 560 people), the rainwater supply reliability varies significantly (3.85–20.55%) across four cities. It was found that Guangzhou (South China) always achieves the highest reliability, greatest annual water saving and highest benefit–cost ratio under three distinct climate conditions. By contrast, Beijing (North China) is mostly ranked as having the lowest one. These findings are well in line with the historical annual precipitation in these regions. Also, it was found that across these four regions, it was not possible for a RWH system to achieve a benefit–cost ratio higher than 1.0. These findings indicate that the RWH systems in most regions of China are currently economically unfeasible without government subsidies.Chen ShiguangZhang YuIWA Publishingarticlebenefit–cost ratioclimate conditionrainwater harvesting systemspatial variabilitytank sizesWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 1, Pp 386-400 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	benefit–cost ratio climate condition rainwater harvesting system spatial variability tank sizes Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	benefit–cost ratio climate condition rainwater harvesting system spatial variability tank sizes Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Chen Shiguang Zhang Yu Water saving potential and economic viability assessment of rainwater harvesting system for four different climatic regions in China
description	Rainwater is one of the most promising alternative water sources. However, the financial outcomes of the rainwater harvesting (RWH) systems are not always assured as economic performance of RWH systems vary greatly under different climatic conditions.This paper investigates reliability, water saving and benefit–cost ratio of an RWH system with different storage tanks and under three distinct climatic conditions (i.e., wet, average and dry year) at four cities in China. It was found that for a standard building (1,600 m2 roof having 560 people), the rainwater supply reliability varies significantly (3.85–20.55%) across four cities. It was found that Guangzhou (South China) always achieves the highest reliability, greatest annual water saving and highest benefit–cost ratio under three distinct climate conditions. By contrast, Beijing (North China) is mostly ranked as having the lowest one. These findings are well in line with the historical annual precipitation in these regions. Also, it was found that across these four regions, it was not possible for a RWH system to achieve a benefit–cost ratio higher than 1.0. These findings indicate that the RWH systems in most regions of China are currently economically unfeasible without government subsidies.
format	article
author	Chen Shiguang Zhang Yu
author_facet	Chen Shiguang Zhang Yu
author_sort	Chen Shiguang
title	Water saving potential and economic viability assessment of rainwater harvesting system for four different climatic regions in China
title_short	Water saving potential and economic viability assessment of rainwater harvesting system for four different climatic regions in China
title_full	Water saving potential and economic viability assessment of rainwater harvesting system for four different climatic regions in China
title_fullStr	Water saving potential and economic viability assessment of rainwater harvesting system for four different climatic regions in China
title_full_unstemmed	Water saving potential and economic viability assessment of rainwater harvesting system for four different climatic regions in China
title_sort	water saving potential and economic viability assessment of rainwater harvesting system for four different climatic regions in china
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/d7f7a30a748e48d18fd7387efe809abd
work_keys_str_mv	AT chenshiguang watersavingpotentialandeconomicviabilityassessmentofrainwaterharvestingsystemforfourdifferentclimaticregionsinchina AT zhangyu watersavingpotentialandeconomicviabilityassessmentofrainwaterharvestingsystemforfourdifferentclimaticregionsinchina
_version_	1718443886390542336

Water saving potential and economic viability assessment of rainwater harvesting system for four different climatic regions in China

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