Generalized storage-yield-reliability relationships for analysing shopping centre rainwater harvesting systems.

Simple item page
dc.citation.doidoi:10.3390/w9100771en_ZA
dc.citation.epage20en_ZA
dc.citation.issue10en_ZA
dc.citation.spage1en_ZA
dc.contributor.authorNdiritu, John
dc.contributor.authorMoodley, Yashiren
dc.contributor.authorGuliwe, Mondli
dc.date.accessioned2017-11-27T06:19:01Z
dc.date.available2017-11-27T06:19:01Z
dc.date.issued2017-10-10
dc.description.abstractThe objective of this study was to develop guidelines for analysing rainwater harvesting (RWH) systems of shopping centres in South Africa. A model consisting of three dimensionless relationships relating rainwater supply and demand to storage capacity, yield and reliability was formulated. Data from daily simulation of potential RWHsystems of 19 shopping were used to obtain the relationships. The simulations revealed within-year storage behaviour with considerable variation of annual yield. By applying the Weibull plotting position formula, yield-reliability relationships were derived. The aim to maximize yield and reliability whilst minimizing storage identified Pareto-optimal combinations of the three variables and these combinations were used to develop two dimensionless relationships. An additional relationship based on the dependence of the slope of the yield-reliability plots on yield was formulated to enable analysis of hydrologically non-optimal systems. Verification tests using four RWH systems obtained results that matched those from simulation and the model could therefore be applied for RWH feasibility analysis and preliminary design. This study highlights the need to incorporate inter-annual variability in RWH analysis and shows how reliability can be used to quantify this. This study further demonstrates how reliability can be fully integrated into regression relationships for generalized RWH analysis.en_ZA
dc.description.librarianMvdH2017en_ZA
dc.description.urlhttp://www.mdpi.com/journal/wateren_ZA
dc.identifier.citationNdiritu, J. Moodley, Y. and Mondli, G. 2017. Generalized storage-yield-reliability relationships for analysing shopping centre rainwater harvesting systems. Water (Switzerland) 9(10). Article number: 771. http://www.mdpi.com/2073-4441/9/10/771en_ZA
dc.identifier.issn2073-4441
dc.identifier.urihttp://www.mdpi.com/
dc.identifier.urihttp://hdl.handle.net/10539/23437
dc.journal.titleWater (Switzerland)en_ZA
dc.journal.volume9en_ZA
dc.language.isoenen_ZA
dc.orcid.id0000-0001-9092-3172en_ZA
dc.publisherMDPIen_ZA
dc.rights© 2017 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution License.en_ZA
dc.subjectRainwater harvestingen_ZA
dc.subjectYielden_ZA
dc.subjectReliabilityen_ZA
dc.subjectStorageen_ZA
dc.subjectInter-annual variabilityen_ZA
dc.subjectGeneralizationen_ZA
dc.subjectPareto optimumen_ZA
dc.subjectShopping centresen_ZA
dc.subjectEconomicsen_ZA
dc.titleGeneralized storage-yield-reliability relationships for analysing shopping centre rainwater harvesting systems.en_ZA
dc.typeArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Generalized Storage Yield Reliability.pdf
Size:
10.21 MB
Format:
Adobe Portable Document Format
Description:
Article
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Research Outputs (Civil and Environmental Engineering)
Academic Wits Research Outputs (All submissions)