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Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy

Author

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  • Mehri Akbari

    (Faculty of Mechanical Engineering, University of Tabriz, Daneshgah Street, Tabriz 5166616471, Iran)

  • Seyed M. S. Mahmoudi

    (Faculty of Mechanical Engineering, University of Tabriz, Daneshgah Street, Tabriz 5166616471, Iran)

  • Mortaza Yari

    (Faculty of Mechanical Engineering, University of Tabriz, Daneshgah Street, Tabriz 5166616471, Iran
    Faculty of Mechanical Engineering, University of Mohaghegh Ardabili, Ardabil 5619911367, Iran)

  • Marc A. Rosen

    (Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON L1H 7K4, Canada)

Abstract

A new combined cogeneration system for producing electrical power and pure water is proposed and analyzed from the viewpoints of thermodynamics and economics. The system uses geothermal energy as a heat source and consists of a Kalina cycle, a LiBr/H 2 O heat transformer and a water purification system. A parametric study is carried out in order to investigate the effects on system performance of the turbine inlet pressure and the evaporator exit temperature. For the proposed system, the first and second law efficiencies are found to be in the ranges of 16%–18.2% and 61.9%–69.1%, respectively. For a geothermal water stream with a mass flow rate of 89 kg/s and a temperature of 124 °C, the maximum production rate for pure water is found to be 0.367 kg/s.

Suggested Citation

  • Mehri Akbari & Seyed M. S. Mahmoudi & Mortaza Yari & Marc A. Rosen, 2014. "Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy," Sustainability, MDPI, vol. 6(4), pages 1-25, April.
    • Handle: RePEc:gam:jsusta:v:6:y:2014:i:4:p:1796-1820:d:34872
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    References listed on IDEAS

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    1. Lolos, P.A. & Rogdakis, E.D., 2009. "A Kalina power cycle driven by renewable energy sources," Energy, Elsevier, vol. 34(4), pages 457-464.
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    6. Yari, Mortaza, 2010. "Exergetic analysis of various types of geothermal power plants," Renewable Energy, Elsevier, vol. 35(1), pages 112-121.
    Full references (including those not matched with items on IDEAS)

    Citations

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    Cited by:

    1. Mohammadzadeh Bina, Saeid & Jalilinasrabady, Saeid & Fujii, Hikari, 2017. "Energy, economic and environmental (3E) aspects of internal heat exchanger for ORC geothermal power plants," Energy, Elsevier, vol. 140(P1), pages 1096-1106.
    2. Shokati, Naser & Ranjbar, Faramarz & Yari, Mortaza, 2015. "Exergoeconomic analysis and optimization of basic, dual-pressure and dual-fluid ORCs and Kalina geothermal power plants: A comparative study," Renewable Energy, Elsevier, vol. 83(C), pages 527-542.
    3. Michał Kaczmarczyk & Barbara Tomaszewska & Leszek Pająk, 2020. "Geological and Thermodynamic Analysis of Low Enthalpy Geothermal Resources to Electricity Generation Using ORC and Kalina Cycle Technology," Energies, MDPI, vol. 13(6), pages 1-20, March.
    4. Mahmoudi, S.M.S. & Akbari Kordlar, M., 2018. "A new flexible geothermal based cogeneration system producing power and refrigeration," Renewable Energy, Elsevier, vol. 123(C), pages 499-512.
    5. Anvari, Simin & Mahian, Omid & Taghavifar, Hadi & Wongwises, Somchai & Desideri, Umberto, 2020. "4E analysis of a modified multigeneration system designed for power, heating/cooling, and water desalination," Applied Energy, Elsevier, vol. 270(C).
    6. Michał Kaczmarczyk & Barbara Tomaszewska & Agnieszka Operacz, 2020. "Sustainable Utilization of Low Enthalpy Geothermal Resources to Electricity Generation through a Cascade System," Energies, MDPI, vol. 13(10), pages 1-18, May.
    7. Cem Öksel & Ali Koç, 2022. "Modeling of a Combined Kalina and Organic Rankine Cycle System for Waste Heat Recovery from Biogas Engine," Sustainability, MDPI, vol. 14(12), pages 1-26, June.
    8. Vivek Aggarwal & Chandan Swaroop Meena & Ashok Kumar & Tabish Alam & Anuj Kumar & Arijit Ghosh & Aritra Ghosh, 2020. "Potential and Future Prospects of Geothermal Energy in Space Conditioning of Buildings: India and Worldwide Review," Sustainability, MDPI, vol. 12(20), pages 1-19, October.

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