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Exergetic and economic analysis of two-pass RO desalination proposed plant for domestic water and irrigation

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  • Eshoul, Nuri M.
  • Agnew, Brian
  • Anderson, Alexander
  • Atab, Mohanad S.

Abstract

Improving reverse osmosis desalination through reducing power consumption and improving exergy efficiency for acceptable operation conditions is the objective of this study. It covers the influence of recovery ratio on different two-pass reverse osmosis desalination configurations at different sea water temperature and salinity, focusing on power consumption, cost, exergy efficiency and exergy destruction for a proposed 24000m3/day two-pass reverse osmosis desalination plant in Libya. The results show that as the recovery ratio increases the exergy destruction decreases and exergy efficiency increases, with a slight decline in the cost of cubic meter with sea water salinity increase. A configuration incorporating pressure exchanger and energy recovery turbine has the highest exergy efficiency and lowest water cost. While the configuration without these has the lowest total capital cost, it has the highest life time cost due to high power consumption.

Suggested Citation

  • Eshoul, Nuri M. & Agnew, Brian & Anderson, Alexander & Atab, Mohanad S., 2017. "Exergetic and economic analysis of two-pass RO desalination proposed plant for domestic water and irrigation," Energy, Elsevier, vol. 122(C), pages 319-328.
    • Handle: RePEc:eee:energy:v:122:y:2017:i:c:p:319-328
    DOI: 10.1016/j.energy.2017.01.095
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    References listed on IDEAS

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    1. Blanco-Marigorta, Ana M. & Masi, Marco & Manfrida, Giampaolo, 2014. "Exergo-environmental analysis of a reverse osmosis desalination plant in Gran Canaria," Energy, Elsevier, vol. 76(C), pages 223-232.
    2. Ezan, Mehmet Akif & Erek, Aytunç & Dincer, Ibrahim, 2011. "Energy and exergy analyses of an ice-on-coil thermal energy storage system," Energy, Elsevier, vol. 36(11), pages 6375-6386.
    3. Nuri M. Eshoul & Brian Agnew & Mohammed A. Al-Weshahi & Mohanad S. Atab, 2015. "Exergy Analysis of a Two-Pass Reverse Osmosis (RO) Desalination Unit with and without an Energy Recovery Turbine (ERT) and Pressure Exchanger (PX)," Energies, MDPI, vol. 8(7), pages 1-16, July.
    4. El-Emam, Rami Salah & Dincer, Ibrahim, 2014. "Thermodynamic and thermoeconomic analyses of seawater reverse osmosis desalination plant with energy recovery," Energy, Elsevier, vol. 64(C), pages 154-163.
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    Cited by:

    1. Sudipa Choudhury & Apu Kumar Saha & Mrinmoy Majumder, 2020. "Optimal location selection for installation of surface water treatment plant by Gini coefficient-based analytical hierarchy process," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 22(5), pages 4073-4099, June.
    2. Rosales-Asensio, Enrique & Borge-Diez, David & Pérez-Hoyos, Ana & Colmenar-Santos, Antonio, 2019. "Reduction of water cost for an existing wind-energy-based desalination scheme: A preliminary configuration," Energy, Elsevier, vol. 167(C), pages 548-560.

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