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Utilization of the cryogenic exergy of liquid natural gas (LNG) for the production of electricity

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  • Szargut, Jan
  • Szczygiel, Ireneusz

Abstract

Liquid natural gas (LNG) delivered by means of sea-ships is compressed and then evaporated before its introduction to the system of pipelines. The possibilities of the utilization of cryogenic exergy of LNG for electricity production without any additional combustion of any its portion, have been analyzed. Three variants of the plant have been investigated. A cascade system with two working fluids has been analyzed in two first of them. The economic optimization proved that the optimum temperature difference in the LNG evaporation is higher than initially assumed. Therefore, a third variant of the plant has been analyzed, with ethane as a single working fluid. Only the third variant has been analyzed in detail.

Suggested Citation

  • Szargut, Jan & Szczygiel, Ireneusz, 2009. "Utilization of the cryogenic exergy of liquid natural gas (LNG) for the production of electricity," Energy, Elsevier, vol. 34(7), pages 827-837.
    • Handle: RePEc:eee:energy:v:34:y:2009:i:7:p:827-837
    DOI: 10.1016/j.energy.2009.02.015
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    References listed on IDEAS

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    1. Deng, Shimin & Jin, Hongguang & Cai, Ruixian & Lin, Rumou, 2004. "Novel cogeneration power system with liquefied natural gas (LNG) cryogenic exergy utilization," Energy, Elsevier, vol. 29(4), pages 497-512.
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