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Liquéfaction d’hélium, d’hydrogène et de méthane avec des cycles de Brayton inversé et de Joule-Thomson, renforcés par compression refroidie en-dessous de la température ambiante et compression hybride ou du froid à ultra-basse température à technologie coabsorbante.

Helium, hydrogen and methane liquefaction with Reverse-Brayton & Joule-Thomson cycles, boosted by sub-sink cooled compression and hybrid compression or coabsorbent technology ultra-low temperature refrigeration.

Numéro : pap. n. 375

Auteurs : STAICOVICI M. D.

Résumé

A new gas liquefaction cycle, noted by SCC-HC/CBS-RB&JT, is presented as an improved version of a first cycle introduced in a former author paper. The cycle is a joint of Reverse Brayton (RB), run by helium, and Joule-Thomson (JT), run by the gas to be liquefied. It benefits of new main features, such as: a) the gas precooling at ?????? = -75? and ???????? = 15? is boosted by sub-sink cooled compression (SCC), applied to both joint cycles; b) the SCC is performed by Hybrid Compression (HC) or Coabsorbent (CBS) technology, run in the ultra-low temperature refrigeration (ULTR) domain; c) the RB&JT joint is improved, to increase efficiency and feasibility. A simple algorithm for assessment of the specific work consumption and effectiveness of HC and CBS -ULTR technologies, run in different operation conditions by ????3 - ??2?? and ????3, is given. Next, the SCC-HC/CBSRB&JT is described and modeled. Depending on ULTR type, the model results of HeL, HL and LNG show ??????????,??????-????/??????-????&???? is by 10-20 times smaller, up to 7,5 % out of the specific hydrogen heating value and by 2-4 times less, respectively, as compared to ?????????? of current technologies in kind.

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Pages : 8

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Détails

  • Titre original : Helium, hydrogen and methane liquefaction with Reverse-Brayton & Joule-Thomson cycles, boosted by sub-sink cooled compression and hybrid compression or coabsorbent technology ultra-low temperature refrigeration.
  • Identifiant de la fiche : 30025943
  • Langues : Anglais
  • Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Date d'édition : 24/08/2019
  • DOI : http://dx.doi.org/10.18462/iir.icr.2019.0375

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