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Analyse de performance d’un refroidisseur de gaz au CO2 à tubes ailetés avec développement avancé par modélisation CFD et simulation.

Performance analysis of finned-tube CO2 gas cooler with advanced CFD modelling development and simulation.

Numéro : pap. n. 835

Auteurs : ZHANG X., GE Y., SUN J.

Résumé

A three-dimensional Computational Fluid Dynamics (CFD) modelling investigation in a finned-tube CO2 gas cooler has been presented and compared with literatures in terms of airside heat transfer coefficient and refrigerant side temperature profile. For the heat exchanger air flow, the Reynolds number is varied in the range of 94.1-282.3 such that laminar flow and viscous model are selected in the CFD model. Simulation results were analyzed and compared at different operating parameters of both air and refrigerant sides including air inlet velocity, air inlet temperature, refrigerant inlet temperature, pressure and mass flow rate. The numerical results have been validated with the public literature results. The simulation results show that when the air inlet velocity varies from 1 m/s to 3 m/s, airside average heat transfer coefficient increases from 88.58 W/m2k to 138.69 W/m2k. In addition, it is found that the higher velocity leads to lower the approach temperature and thus improving the performance of the gas cooler. The research methods and outcomes can be used for further investigation and optimization in this area.

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Pages : 9

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Détails

  • Titre original : Performance analysis of finned-tube CO2 gas cooler with advanced CFD modelling development and simulation.
  • Identifiant de la fiche : 30026482
  • 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.2019.0835

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