Volume 27 Issue 6
Jun.  2012
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Article Navigation >  Journal of Aerospace Power  > 2012  >  27(6): 1332-1339
FENG Shi-yu, LU Ji, LIU Wei-hua, JIANG Jun-chang, LIU Su-yan. Separation performance of hollow fiber membrane for on-board inerting gas generating system[J]. Journal of Aerospace Power, 2012, 27(6): 1332-1339.
Citation: FENG Shi-yu, LU Ji, LIU Wei-hua, JIANG Jun-chang, LIU Su-yan. Separation performance of hollow fiber membrane for on-board inerting gas generating system[J]. Journal of Aerospace Power, 2012, 27(6): 1332-1339.
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Separation performance of hollow fiber membrane for on-board inerting gas generating system

  • 1.

    College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

  • 2.

    The First Aircraft Institute, Aviation Industry Corporation of China,Xi'an 710089,China

  • Received Date: 2011-06-23
  • Publish Date: 2012-06-28
    Abstract
  • The mathematical model of the hollow fiber membrane of on-board inert gas generation system (OBIGGS) is set up in term of the differential method,and solved by the Runge-Kutta method.The comparison between calculating results and experimental data published in literature reveals that the deviation is within 10%.Furthermore,this theoretical model is employed to analyze the influence of the specific feed flux of membrane area,pressure ratio of membrane fiber,the separation factor and the permeability coefficient to the volume fraction of oxygen in production gas and the production efficiency of nitrogen.The study shows that though the increase of the specific feed flux of membrane area could positively promote the production efficiency of nitrogen,the volume fraction of oxygen reduces sharply.Hence,an appropriate process of OBIGGS should be designed to overcome the disadvantage mentioned above.The increase of the pressure ratio and the permeability coefficient of oxygen will decrease the production efficiency of nitrogen and the volume fraction of oxygen,but the influence of the permeability coefficient is slight.Therefore,the increase of the permeability coefficient of oxygen is beneficial to the separation performance.Based on the experimental data and the model,the change of the separation ideal level related to the temperature and pressure is analyzed,the result shows that the pressure ratio will make greater effect on the separation ideal level.When the pressure ratio increases,the actual separation process will deviate from the theoretical one gradually.

     

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