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Drinking Water Engineering and Science An interactive open-access journal

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https://doi.org/10.5194/dwesd-5-533-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
06 Nov 2012
Review status
This discussion paper has been under review for the journal Drinking Water Engineering and Science (DWES). A final paper in DWES is not foreseen.
Method of evaluation of efficiency improvement potential for water supply systems with focus on variable speed centrifugal pumps
D. Pilscikovs and E. Dzelzitis Institute of Heat, Gas and Water Technology, Riga Technical University, Riga, Latvia
Abstract. The goal of this research is the derivation of the method for evaluation of efficiency improvement potential for public water supply systems with a focus on centrifugal network pumps. The efficiency of proportional pressure control usage has been analyzed for variable speed pumps. It has been done if proportional pressure control is used in comparison with constant pressure control mode. For this reason, energy calculation analyses have been realized for variable speed centrifugal pumps, and the theoretical tool of estimation of the efficiency improvement potential for public water supply systems has been derived. The conclusions are as follows: (1) it has been found that 1110 MWh of annually consumed electrical energy can be saved up, if the control mode of variable speed network pumps will be changed from constant pressure to proportional pressure control mode with the deviation of 20% from head value of duty point at zero flow; (2) about 13 MWh of annually consumed electrical energy can be saved up, if the proportional pressure control mode with the deviation of 15% will be changed to the deviation of 20%; (3) totally about 1123 MWh or 1.12 GWh (14% of the annually consumed electrical energy by variable speed network pumps) can be saved up in small public water supply systems in Latvia.

Citation: Pilscikovs, D. and Dzelzitis, E.: Method of evaluation of efficiency improvement potential for water supply systems with focus on variable speed centrifugal pumps, Drink. Water Eng. Sci. Discuss., 5, 533-553, https://doi.org/10.5194/dwesd-5-533-2012, 2012.
D. Pilscikovs and E. Dzelzitis
Interactive discussionStatus: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version      Supplement - Supplement
 
RC C281: 'review', Anonymous Referee #1, 07 Dec 2012 Printer-friendly Version 
SC C283: 'Answer on the comment 5, C281-C282, 2012', Deniss Pilscikovs, 07 Dec 2012 Printer-friendly Version 
 
EC C291: 'editor comment', Mirjam Blokker, 18 Dec 2012 Printer-friendly Version 
AC C306: 'Answer on the comment 5, C291–C291, 2012', Deniss Pilscikovs, 24 Dec 2012 Printer-friendly Version 
D. Pilscikovs and E. Dzelzitis
D. Pilscikovs and E. Dzelzitis

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