Abstract
Research Article| February 24 2015 Sensitivity analysis for water supply input parameters of the CLARA simplified planning tool using three complementary methods Atekelt Abebe Ketema; Atekelt Abebe Ketema 1Institute of Sanitary Engineering and Water Pollution Control, University of Natural Resources and Life Sciences, Vienna (BOKU), Muthgasse 18, A-1190 Vienna, Austria Search for other works by this author on: This Site PubMed Google Scholar Guenter Langergraber Guenter Langergraber 1Institute of Sanitary Engineering and Water Pollution Control, University of Natural Resources and Life Sciences, Vienna (BOKU), Muthgasse 18, A-1190 Vienna, Austria E-mail: guenter.langergraber@boku.ac.at Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2015) 64 (4): 391–403. https://doi.org/10.2166/aqua.2015.126 Article history Received: September 11 2014 Accepted: January 22 2015 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Atekelt Abebe Ketema, Guenter Langergraber; Sensitivity analysis for water supply input parameters of the CLARA simplified planning tool using three complementary methods. Journal of Water Supply: Research and Technology-Aqua 1 June 2015; 64 (4): 391–403. doi: https://doi.org/10.2166/aqua.2015.126 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Three sensitivity analysis methods based on derivative, screening and regression are applied to the CLARA simplified planning tool (CLARA-SPT) estimating life cycle cost (LCC) of water supply systems. Derivative-based and standard regression coefficient methods are used to address parameter prioritization and Morris screen method for parameter fixing. The study investigated sensitivity of 26 parameters through three feasible water supply alternatives. The results revealed the importance of all global parameters: period of consideration, net interest rate and expected annual growth rate, for the LCC of all alternatives. The analysis identified ten technological parameters as non-influential, which can be fixed to a certain value. In contrast, two internally fixed parameters (i.e., chlorine dosage and alum dosage) are determined to be important; hence, these parameters need to be available for planners for reasonable cost estimation. Except for period of consideration, all parameters have low standard deviation (σ) value that indicates linear correlation of alternatives' LCC with input parameters and/or insignificant interaction among parameters. This study is valuable for further development of the CLARA-SPT in order to simplify it and to provide guidance for the tool user on the importance of specific input parameters. CLARA simplified planning tool, important parameter, life cycle cost, non-influential parameter, water supply alternatives © IWA Publishing 2015 Supplementary data SUPPORTING MATERIAL- pdf file You do not currently have access to this content.
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