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Energy efficient operation of variable speed submersible pumps : simulation of a ground water well field
Citation Link: https://doi.org/10.15480/882.1749
Publikationstyp
Journal Article
Date Issued
2018-09-15
Sprache
English
TORE-DOI
Journal
Volume
10
Issue
9
Start Page
Art.-Nr. 1255
Citation
Water 10 (9): 1255 (2018)
Publisher DOI
Scopus ID
Publisher
Multidisciplinary Digital Publishing Institute
Due to their lower energy consumption, permanent magnet synchronous motor (PMSM) submersible pumps have been introduced in ground water well field operation. Besides direct savings of energy, the introduction of PMSM pumps together with the required variable frequency converters offers new operational scenarios to meet the seasonally varying water demand. In this work, potential energy savings of variable speed submersible pumps were investigated. A ground water well field consisting of 13 wells and their transport pipes was modeled in the hydraulic modeling software EPANET 2.0. Using MS visual basic for applications, EPANET was coupled with MS Excel and a genetic algorithm to identify the most energy efficient combination of pump speeds. For the simulated well field, the total specific energy demand required for pumping was significantly lower in partial load operation as compared to nominal pump speed operation. For low and moderate flow scenarios, energy savings in the range of 20% compared to nominal speed operation can be achieved. These findings were confirmed by a monitoring campaign in the well field. Combining hydraulic simulation and optimization using genetic algorithms, the best efficiency scenario for operation of ground water well fields can be found.
Subjects
EPANET
ground water
well field
genetic algorithm
submersible pumps
variable speed
permanent magnet synchronous motors
DDC Class
620: Ingenieurwissenschaften
More Funding Information
German Federal Ministry for Economic Affairs and Energy (BMWi,
grant number 03ET1190B) and the German Technical and Scientific Association for Gas and Water (DVGW)
grant number 03ET1190B) and the German Technical and Scientific Association for Gas and Water (DVGW)
Publication version
publishedVersion
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