On the thermodynamics of dual purpose power desalting plants Part II. Using gas turbines

M. A. Darwish, A. Elhadek, A. Dayoub

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1 Citation (Scopus)


Recent advances in gas turbine cycles and combined gas/steam combined cycles are presented. First and second law analysis of gas turbine cycles is presented and shows that substantial available energy (up to 30% of fuel availability) is carried out by gas turbine exhaust gases. This available energy can be utilized for further heat to work conversion or for direct process heating. Heat recovered from gas turbine exhaust gases in heat recovery steam generator (HRSG) can generate relatively high pressure steam to be supplied to Rankine steam power cycle to form gas/steam power cycle of high efficiency (40-45%). Steam can be generated at low pressure in the HRSG for direct supply to the brine heater of a multistage flash MSF desalting system. Possible combination of simple gas turbine cycle or combined gas/steam cycle with reverse osmosis or MSF sea water desalting systems are presented and evaluated. The evaluation indicates that most of these combination are more superior than combination with steam power plants from energy view points.

Original languageEnglish
Pages (from-to)169-182
Number of pages14
Issue numberC
Publication statusPublished - 1 Dec 1987
Externally publishedYes


ASJC Scopus subject areas

  • Materials Science(all)
  • Water Science and Technology
  • Mechanical Engineering
  • Chemistry(all)
  • Chemical Engineering(all)

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