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Energy optimisation of existing SWRO (seawater reverse osmosis) plants with ERT (energy recovery turbines): Technical and thermoeconomic assessment

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  • Peñate, Baltasar
  • García-Rodríguez, Lourdes

Abstract

Reduction of SEC (specific energy consumption) is the field with the most specific technical research focus and effort in SWRO (seawater reverse osmosis) plants. For existing installations with energy recovery systems consisting in Pelton turbines, the most significant challenge is how to reduce energy costs. The highest efficient isobaric ERD (energy recovery devices) are used in order to produce major savings in energy consumption in the desalination process and/or to increase the freshwater capacity of the installations, by taking full advantage of the plant equipment. This paper gives a brief overview of the technology used to recover the energy from brine stream in large desalination plants, with a description of the modifications required if the recovery system with Pelton turbines is to be replaced by systems based on isobaric-chamber devices. All possibilities analysed are deeply justified technically and thermoeconomically within an exhaustive assessment.

Suggested Citation

  • Peñate, Baltasar & García-Rodríguez, Lourdes, 2011. "Energy optimisation of existing SWRO (seawater reverse osmosis) plants with ERT (energy recovery turbines): Technical and thermoeconomic assessment," Energy, Elsevier, vol. 36(1), pages 613-626.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:1:p:613-626
    DOI: 10.1016/j.energy.2010.09.056
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    References listed on IDEAS

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    1. Meerganz von Medeazza, Gregor & Moreau, Vincent, 2007. "Modelling of water–energy systems. The case of desalination," Energy, Elsevier, vol. 32(6), pages 1024-1031.
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    Cited by:

    1. Stevanovic, Vladimir D. & Gajic, Aleksandar & Savic, Ljubodrag & Kuzmanovic, Vladan & Arnautovic, Dusan & Dasic, Tina & Maslovaric, Blazenka & Prica, Sanja & Milovanovic, Bojan, 2011. "Hydro energy potential of cooling water at the thermal power plant," Applied Energy, Elsevier, vol. 88(11), pages 4005-4013.
    2. Jamil, Muhammad Ahmad & Zubair, Syed M., 2017. "Design and analysis of a forward feed multi-effect mechanical vapor compression desalination system: An exergo-economic approach," Energy, Elsevier, vol. 140(P1), pages 1107-1120.

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