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Second-law-based thermodynamic analysis of regenerative-reheat Rankine-cycle power plants

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  • Habib, M.A.
  • Zubair, S.M.

Abstract

We examine the performance of regenerative-reheat power plants in terms of irreversibility analysis. The reduction in the irreversible losses with the addition of backward, cascade-type feedwater heaters and/or a reheat option are compared with a conventional energy-balance approach. The results indicate that most of the irreversible losses occur in the boiler and that these losses are significantly reduced by the incorporation of feedwater heating. The incorporation of feedwater heating results in a reduction of the total irreversibility rate of the cycle by 18%. The corresponding improvement in efficiency is 12%. These two figures are augmented to 24 and 14%, respectively, by the incorporation of reheat in addition to regeneration.

Suggested Citation

  • Habib, M.A. & Zubair, S.M., 1992. "Second-law-based thermodynamic analysis of regenerative-reheat Rankine-cycle power plants," Energy, Elsevier, vol. 17(3), pages 295-301.
    • Handle: RePEc:eee:energy:v:17:y:1992:i:3:p:295-301
    DOI: 10.1016/0360-5442(92)90057-7
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    Cited by:

    1. Dong-Jin Cho & Eul-Bum Lee & Jae-Min Cho & Douglas Alleman, 2019. "Reducing the Superheating of Extraction Stream on Advanced-Ultra Super Critical Power Plants with Regenerative Turbines in South Korea: An Economic Analysis," Energies, MDPI, vol. 12(9), pages 1-22, May.
    2. Gupta, M.K. & Kaushik, S.C. & Ranjan, K.R. & Panwar, N.L. & Reddy, V. Siva & Tyagi, S.K., 2015. "Thermodynamic performance evaluation of solar and other thermal power generation systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 567-582.
    3. Obida Zeitoun & Jamel Orfi & Salah Ud-Din Khan & Hany Al-Ansary, 2023. "Desalinated Water Costs from Steam, Combined, and Nuclear Cogeneration Plants Using Power and Heat Allocation Methods," Energies, MDPI, vol. 16(6), pages 1-28, March.
    4. Li, Ming-Jia & Tao, Wen-Quan, 2017. "Review of methodologies and polices for evaluation of energy efficiency in high energy-consuming industry," Applied Energy, Elsevier, vol. 187(C), pages 203-215.
    5. Gupta, M.K. & Kaushik, S.C., 2010. "Exergy analysis and investigation for various feed water heaters of direct steam generation solar–thermal power plant," Renewable Energy, Elsevier, vol. 35(6), pages 1228-1235.
    6. Kaushik, S.C. & Reddy, V. Siva & Tyagi, S.K., 2011. "Energy and exergy analyses of thermal power plants: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(4), pages 1857-1872, May.
    7. Blanco-Marigorta, Ana M. & Victoria Sanchez-Henríquez, M. & Peña-Quintana, Juan A., 2011. "Exergetic comparison of two different cooling technologies for the power cycle of a thermal power plant," Energy, Elsevier, vol. 36(4), pages 1966-1972.

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