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Water 2019, 11(4), 783; https://doi.org/10.3390/w11040783

Sizing of Domestic Rainwater Harvesting Systems Using Economic Performance Indicators to Support Water Supply Systems

1
Natural and Built Environments Research Centre, University of South Australia, Adelaide 5095, Australia
2
Barbara Hardy Institute, University of South Australia, Adelaide 5095, Australia
3
Institute for Sustainable Industries & Liveable Cities, Victoria University, Melbourne 8001, Australia
*
Authors to whom correspondence should be addressed.
Received: 20 March 2019 / Revised: 10 April 2019 / Accepted: 11 April 2019 / Published: 15 April 2019
(This article belongs to the Special Issue Smart Technologies and Water Supply Planning)
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Abstract

This paper presents a monitoring-based investigation of rainwater collection systems using economic performance indicators in a group of households with nonconventional end-uses for rainwater that are not traditionally associated with rainwater supply. The monitored data for five household rainwater tank systems were analysed in two stages. For the first stage, the data was empirically analysed to develop a method to predict effective roof catchment areas. For the second stage, the effective roof catchment areas, together with roof area connection percentages, were analysed against different types of water demands in individual households. The individual systems were investigated for yield capacities, costs and water security using a modified Roof Runoff Harvesting Systems average annual yield model based on daily water balance procedures. The Life Cycle Costing analysis of the systems using the model was based on the Capital Recovery Method by taking into consideration the capital costs as well as ongoing costs for maintenance, replacement and operation of the systems. The analysis established the optimal sizing requirements for the studied rainwater tanks and their corresponding roof area connectivity. View Full-Text
Keywords: integrated water management; smart monitoring; rainwater harvesting; residential water demand integrated water management; smart monitoring; rainwater harvesting; residential water demand
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Umapathi, S.; Pezzaniti, D.; Beecham, S.; Whaley, D.; Sharma, A. Sizing of Domestic Rainwater Harvesting Systems Using Economic Performance Indicators to Support Water Supply Systems. Water 2019, 11, 783.

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