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Exergoeconomic evaluation of a CSP plant in combination with a desalination unit

Author

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  • Wellmann, Johannes
  • Meyer-Kahlen, Bernhild
  • Morosuk, Tatiana

Abstract

Due to increasing energy prices and the anticipated increase of freshwater demand in the Middle East and North Africa (MENA) region, it is essential that water is desalinated at a low cost. The estimation of the product costs of a co-generating system (electricity and water) can be calculated using a methodology of exergoeconomics. A co-generation concentrating solar power tower with an integrated low temperature desalination model plant is analyzed using methods of exergy and exergoeconomics. The plant is located on the Red Sea coast in Egypt and has been simulated using meteorological data measured by a local weather station. The economic and exergy analysis gives the input for the exergoeconomic evaluation. There are two operational cases examined: In Case 1, the water output and in Case 2, the electricity output is maximized, respectively. The electricity generation costs are calculated to 0.2051 USD/kWh and 0.2079 USD/kWh. The water generation costs are calculated from 0.8464 USD/m3 to 0.3991 USD/m3 for the two cases. The interpretation of the results are performed using the sensitivity analysis which shows that the number of full load hours during the year have the biggest influence on product costs. The comparison of the calculated results with a lost-kilowatts cost accounting method shows the shortcomings of the exergetic analysis considering the economic value of fresh water. From the exergoeconomic analysis can be concluded that the use of condensation heat has a positive effect on the overall plant balance. Considering the economic viability, is essential to reduce the investment costs for solar energy related components.

Suggested Citation

  • Wellmann, Johannes & Meyer-Kahlen, Bernhild & Morosuk, Tatiana, 2018. "Exergoeconomic evaluation of a CSP plant in combination with a desalination unit," Renewable Energy, Elsevier, vol. 128(PB), pages 586-602.
    • Handle: RePEc:eee:renene:v:128:y:2018:i:pb:p:586-602
    DOI: 10.1016/j.renene.2017.11.070
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    References listed on IDEAS

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    1. World Bank, 2012. "Renewable Energy Desalination : An Emerging Solution to Close the Water Gap in the Middle East and North Africa," World Bank Publications - Books, The World Bank Group, number 11963, December.
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    Cited by:

    1. Chen, Qian & Alrowais, Raid & Burhan, Muhammad & Ybyraiymkul, Doskhan & Shahzad, Muhammad Wakil & Li, Yong & Ng, Kim Choon, 2020. "A self-sustainable solar desalination system using direct spray technology," Energy, Elsevier, vol. 205(C).
    2. Omar, Amr & Nashed, Amir & Li, Qiyuan & Leslie, Greg & Taylor, Robert A., 2020. "Pathways for integrated concentrated solar power - Desalination: A critical review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 119(C).
    3. Calise, Francesco & d’Accadia, Massimo Dentice & Vicidomini, Maria, 2019. "Optimization and dynamic analysis of a novel polygeneration system producing heat, cool and fresh water," Renewable Energy, Elsevier, vol. 143(C), pages 1331-1347.
    4. David Katz & Arkadiy Shafran, 2019. "Transboundary Exchanges of Renewable Energy and Desalinated Water in the Middle East," Energies, MDPI, vol. 12(8), pages 1-21, April.
    5. Khan, Muhammad Sajid & Huan, Qun & Yan, Mi & Ali, Mustajab & Noor, Obaid Ullah & Abid, Muhammad, 2022. "A novel configuration of solar integrated waste-to-energy incineration plant for multi-generational purpose: An effort for achieving maximum performance," Renewable Energy, Elsevier, vol. 194(C), pages 604-620.

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