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Conception et optimisation de la source de neutrons froids dans le réacteur chinois de recherche avancée (CARR).

Design and optimization of the cold neutron source in China Advanced Research Reactor (CARR).

Auteurs : YU F., LI Y., PU L.

Résumé

A helium refrigeration cycle was designed to provide 17.5 K refrigeration for cold neutron source (CNS) in CARR. In order to optimize the cycle performance, different cycle processes with LN2 precooling or with expander pre-cooling are analyzed and calculated. Based on thermodynamic and exergy analysis of different cycle modes, thermodynamic parameters, exergy loss, exergy efficiency and cooling capacity of the systems are obtained and analyzed, respectively. It is shown that the system performance and exergy efficiencies of the cycles with LN2 precooling and with parallel connected expander have better results. Besides, some effect factors on the exergy efficiency of cycle and the exergy loss of components, such as compression ratio of compressor, isentropic efficiency of expander, cold energy loss, temperature difference in heat exchangers, are discussed. The exergy efficiency of system can be improved by 3.6% through adding a thermal insulation shield in the cold box.

Documents disponibles

Format PDF

Pages : ICR07-A1-232

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  • Prix public

    20 €

  • Prix membre*

    Gratuit

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Détails

  • Titre original : Design and optimization of the cold neutron source in China Advanced Research Reactor (CARR).
  • Identifiant de la fiche : 2007-2447
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

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