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Simplified theory of the Archimedian screws

Simplified theory of the Archimedian screws
Simplified theory of the Archimedian screws
The Archimedean screw pump is one of the oldest hydraulic machines. Today, it is employed in pumping as well as - operating in reverse - in an energy conversion role. Despite its age, no consistent theory links the screw’s geometry with its mechanical efficiency. Based on geometrical parameters and an idealised energy conversion process for one turn of the helix, a theoretical model is developed and compared with experimental results. Theoretical maximum efficiencies were found to be a function of the screw’s geometry and matched reported experimental results well. The statement that the efficiency of a screw is a function of losses only could not be confirmed.
0022-1686
666-669
Muller, Gerald
f1a988fc-3bde-429e-83e2-041e9792bfd9
Senior, James
b970c2e1-8cab-4643-beb9-675a5d66c2ea
Muller, Gerald
f1a988fc-3bde-429e-83e2-041e9792bfd9
Senior, James
b970c2e1-8cab-4643-beb9-675a5d66c2ea

Muller, Gerald and Senior, James (2009) Simplified theory of the Archimedian screws. Journal of Hydraulic Research, 47 (5), 666-669. (doi:10.3826/jhr.2009.3475).

Record type: Article

Abstract

The Archimedean screw pump is one of the oldest hydraulic machines. Today, it is employed in pumping as well as - operating in reverse - in an energy conversion role. Despite its age, no consistent theory links the screw’s geometry with its mechanical efficiency. Based on geometrical parameters and an idealised energy conversion process for one turn of the helix, a theoretical model is developed and compared with experimental results. Theoretical maximum efficiencies were found to be a function of the screw’s geometry and matched reported experimental results well. The statement that the efficiency of a screw is a function of losses only could not be confirmed.

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Published date: 2 November 2009
Related URLs:
Organisations: Civil Engineering & the Environment

Identifiers

Local EPrints ID: 75731
URI: http://eprints.soton.ac.uk/id/eprint/75731
DOI: doi:10.3826/jhr.2009.3475
ISSN: 0022-1686
PURE UUID: 005a6e4a-cd1f-4de8-9b0f-84faefc5fccb

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Date deposited: 12 Mar 2010
Last modified: 13 Mar 2024 23:01

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Contributors

Author: Gerald Muller
Author: James Senior

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