Volume 35 Issue 8
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PENG Xiaotian, FENG Shiyu, ZHOU Libiao. Effect of temperature on water production performance of oxygen-consuming inerting system,[J]. Journal of Aerospace Power, 2020, 35(8): 1622-1627. doi: 10.13224/j.cnki.jasp.2020.08.007
Citation: PENG Xiaotian, FENG Shiyu, ZHOU Libiao. Effect of temperature on water production performance of oxygen-consuming inerting system,[J]. Journal of Aerospace Power, 2020, 35(8): 1622-1627. doi: 10.13224/j.cnki.jasp.2020.08.007
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Effect of temperature on water production performance of oxygen-consuming inerting system,

doi: 10.13224/j.cnki.jasp.2020.08.007

  • Key Laboratory of Aircraft Environmental Control and Life Support Industry,and Information Technology,College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

  • Received Date: 2020-01-02
  • Publish Date: 2020-08-28
    Abstract
  • Based on the gas molar flow rate at fuel tank outlet, the molar flow relationship between the gas components flowing through the catalytic reactor and the cooler was deduced, and a mathematical model of the oxygen-consuming inerting system was established. The effect of ambient temperature on “water” performance in the system was studied. Results showed: as the inerting developed, the proportion of water vapor on fuel tank ullage gradually increased, while the amount of cooling air, the relative humidity at the reactor outlet and the amount of removed water decreased. The impact of liquid water precipitation on cooling air amount was huge and cannot be ignored. In addition, the generation and precipitation of water in the system were related to the ambient temperature. The lower ambient temperature indicated the slower rise of water vapor volume on fuel tank ullage, but more cooling air required by the system and the greater amount of precipitating liquid water. For example, when the ambient temperature was 0 ℃, the amount of cooling gas required in the cooler was about 111 times and 126 times of that at 20 ℃ and 40 ℃, respectively.Therefore, when designing an oxygen-consuming inerting system, the effect of temperature changes on the generation and precipitation of water should be fully considered.

     

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