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Modified operation of a small scale energy recovery device for seawater reverse osmosis

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journal contribution
posted on 26.02.2010, 16:16 by Alfredo S. Bermudez-Contreras, Murray Thomson
The Clark pump reciprocating pressure intensifier is a well established mechanism for highly efficient brine stream energy recovery in small scale seawater reverse osmosis (SWRO) desalination systems. This paper describes operation of a modified Clark pump in which the roles of the two pairs of chambers are reversed and the general arrangement of the complete RO system is substantially altered. In particular, the low-pressure motorised pump that feeds into the standard Clark pump is replaced by a high-pressure motorised pump that sits in parallel with it. A conceptual comparison of the original and modified arrangements is presented, followed by a discussion of the practical modifications made to a standard Clark pump in order to test the concept. The initial tests were successful and results indicating specific energies in the range 3.5 to 4.5 kWh/m3 are presented.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Research Unit

  • Centre for Renewable Energy Systems Technology (CREST)

Citation

BERMUDEZ-CONTRERAS, A.S. and THOMSON, M., 2010. Modified operation of a small scale energy recovery device for seawater reverse osmosis. Desalination and Water Treatment, 13, pp. 195-202

Publisher

Desalination Publications

Version

AM (Accepted Manuscript)

Publication date

2010

Notes

This article was published in the journal, Desalination and Water Treatment[© Bermudez-Contreras and Thomson].

ISSN

1944-3994;1944-3986

Language

en

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