An optimal design methodology for large-scale gas liquefaction

Yongliang Li, Xiang Wang and Yulong Ding

Applied Energy, 2012, vol. 99, issue C, 484-490

Abstract: This paper presents an optimization methodology for thermodynamic design of large scale gas liquefaction systems. Such a methodology enables configuration selection and parametric optimization to be implemented simultaneously. Exergy efficiency and genetic algorithm have been chosen as an evaluation index and an evaluation criterion, respectively. The methodology has been applied to the design of expander cycle based liquefaction processes. Liquefaction processes of hydrogen, methane and nitrogen are selected as case studies and the simulation results show that relatively high exergy efficiencies (52% for hydrogen and 58% for methane and nitrogen) are achievable based on very general consumptions.

Keywords: Gas liquefaction system; Process modelling; Thermodynamic optimization; Pinch technology (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (12)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:99:y:2012:i:c:p:484-490

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DOI: 10.1016/j.apenergy.2012.04.040

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