Thermodynamic analysis of hydrocarbon refrigerants-based ethylene BOG re-liquefaction system

Boumedienne M. Beladjine, Ahmed Ouadha, Yacine Addad

    Research output: Contribution to journalArticlepeer-review

    6 Scopus citations


    The present study aims to make a thermodynamic analysis of an ethylene cascade re-liquefaction system that consists of the following two subsystems: a liquefaction cycle using ethylene as the working fluid and a refrigeration cycle operating with a hydrocarbon refrigerant. The hydrocarbon refrigerants considered are propane (R290), butane (R600), isobutane (R600a), and propylene (R1270). A computer program written in FORTRAN is developed to compute parameters for characteristic points of the cycles and the system’s performance, which is determined and analyzed using numerical solutions for the refrigerant condensation temperature, temperature in tank, and temperature difference in the cascade condenser. Results show that R600a gives the best performance, followed by (in order) R600, R290, and R1270. Furthermore, it is found that an increase in tank temperature improves system performance but that an increase in refrigerant condensation temperature causes deterioration. In addition, it is found that running the system at a low temperature difference in the cascade condenser is advantageous.

    Original languageBritish English
    Pages (from-to)321-330
    Number of pages10
    JournalJournal of Marine Science and Application
    Issue number3
    StatePublished - 1 Sep 2016


    • ethylene BOG
    • hydrocarbon refrigerants
    • re-liquefaction
    • thermodynamic analysis


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