Issue 3, 2019

Assisting global rainwater harvesting practitioners: a decision support tool for tank sizing method selection under uncertainty

Abstract

Rainwater harvesting (RWH) tank sizing can be an onerous task due to the range of available methods. This paper presents a simple, yet robust, end-user and design criteria-focused decision support tool, based on a comparison of 12 well established methods across four types (simplified, mass balance continuous simulation, cost-function and statistical). Each method was applied to two example households located in Bucaramanga, Colombia and considered uncertainty through integrated representation of demand variability, climate change, overflow and financial scenarios. Quantitative and qualitative criteria were used to assess the performance of each method. Based on the summation of these criteria, a diversified approach constituting mass balance simulation, cost-function and probabilistic methods was most suited to RWH tank sizing for houses in Bucaramanga. Global RWH practitioners now have a decision support tool to assist in selecting the best tank sizing approach for their context.

Graphical abstract: Assisting global rainwater harvesting practitioners: a decision support tool for tank sizing method selection under uncertainty

Supplementary files

Article information

Article type
Paper
Submitted
11 Oct 2018
Accepted
21 Dec 2018
First published
11 Jan 2019

Environ. Sci.: Water Res. Technol., 2019,5, 506-520

Assisting global rainwater harvesting practitioners: a decision support tool for tank sizing method selection under uncertainty

D. Vargas, I. Dominguez, S. Ward and E. R. Oviedo-Ocaña, Environ. Sci.: Water Res. Technol., 2019, 5, 506 DOI: 10.1039/C8EW00707A

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