A technical evaluation of performance characteristics for pump as turbine application

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dc.contributor.authorMdee, Ombeni J.
dc.contributor.authorKimambo, Cuthbert Z. M.
dc.contributor.authorNielsen, Torbjorn K.
dc.contributor.authorKihedu, Joseph
dc.date.accessioned2020-11-25T07:57:32Z
dc.date.available2020-11-25T07:57:32Z
dc.date.issued2019
dc.descriptionAbstract. Full text book chapter available at https://doi.org/10.1007/978-3-030-18488-9_23en_US
dc.description.abstractIt is very important to gain a better understanding of pump series of different specific speeds when running in reverse mode. The pump is running in reverse mode to serve as turbine for mechanical rotational energy generation in the hydropower and processing plants. This review chapter employs a technical analysis as a tool to evaluate pump when running in reverse mode by assessing the technological development gathered from the literature. The operational parameters discussed include head, flow rate, power, efficiency, and specific speed. The number of modified pump components includes the blade angle, impeller size and tips, edges of shroud and hub plates, volute casing attached with guide vanes, and modified inlet casing rings and eye enlargement. The internal characteristics also occurred in the form of swirl flow between blades and discharge part, time dependent on flow circulation, radial and axial thrust, blade angle variation, pressure pulsation, cavitation effects, and energy losses between blades, volute casing, and discharge part. Furthermore, the conversion methods discussed were related to pump efficiency, specific speed and constant values to predict the head and flow rate. The conversion methods are mostly used to select the off-the-shelf pumps to run as turbine. Therefore, this paper provides the technological development of running the pump in reverse mode that would give insights for further studies in the four knowledge areas that include operational parameter characteristic, pump component modification, internal flow characteristics at the full- and part-load conditions, and also the development of conversion methods related to pump geometry, fluid properties, performance and system curves to improve the off-the-shelf pump selection.en_US
dc.identifier.citationMdee, O. J., Kimambo, C. Z., Nielsen, T. K. & Kihedu, J. (2020). A technical evaluation of performance characteristics for pump as turbine application. In Renewable Energy and Sustainable Buildings (pp. 303-311). Springer, Cham.en_US
dc.identifier.otherDOI: 10.1007/978-3-030-18488-9_23
dc.identifier.urihttp://hdl.handle.net/20.500.12661/2607
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.subjectPump seriesen_US
dc.subjectPumpen_US
dc.subjectTurbineen_US
dc.subjectConversion methodsen_US
dc.subjectPump componentsen_US
dc.subjectPump efficiencyen_US
dc.subjectPump component modificationen_US
dc.subjectPump geometryen_US
dc.subjectTurbine applicationen_US
dc.subjectPump Characteristicsen_US
dc.titleA technical evaluation of performance characteristics for pump as turbine applicationen_US
dc.typeBook chapteren_US
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