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Exergy analysis of two-pass reverse osmosis (RO) desalination with and without energy recovery turbine (ERT)

Lookup NU author(s): Mohamed Eshoul, Professor Brian Agnew, Fathi Latrash

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Abstract

The paper presents the exergy analysis of an actual two-pass RO desalination system considering the seawater solution as a real mixture and not an ideal mixture. The actual 127 ton/h two-pass RO desalination was modelled using IPSEpro software and validated against operating data. The results showed that using the energy recovery turbine (ERT) reduced the seawater RO (SWRO) desalination total power consumption by 30% and specific power consumption for SWRO per m(3) water from 7.2 kW/m(3) to 5.0 kW/m(3). In addition, the exergy efficiency of the RO desalination improved by 49% and exergy destruction was reduced by 40%. The results also showed that the rejected seawater, when the ERT was not in use, accounted for 42% of the total exergy destruction.


Publication metadata

Author(s): Eshoul N, Agnew B, Al-Weshahi MA, Latrash F

Publication type: Article

Publication status: Published

Journal: International Journal of Exergy

Year: 2016

Volume: 19

Issue: 1

Pages: 1-14

Print publication date: 01/01/2016

Acceptance date: 01/01/1900

ISSN (print): 1742-8297

ISSN (electronic): 1742-8300

Publisher: Inderscience Publishers

URL: http://dx.doi.org/10.1504/IJEX.2016.074264

DOI: 10.1504/IJEX.2016.074264


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