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Volume 32 Issue 09
Sep.  2006
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Journal of Beijing University of Aeronautics and Astronautics  > 2006  >  32(09): 1007-1010.
Gao Yushan, Chen Ze, Li Mao, et al. Experiment and simulation of impinging coaxial gas-gas injector[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(8): 923-926. (in Chinese)
Citation: He Jun, Zhao Jingquan, Yuan Xiuganet al. Entropy generation minimization analysis for aircraft environmental control system optimal design[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(09): 1007-1010. (in Chinese)
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Entropy generation minimization analysis for aircraft environmental control system optimal design

  • School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 28 Nov 2005
  • Publish Date: 30 Sep 2006
    Abstract
  • A new method bases on the second law of thermodynamics for entropy generation minimization analysis and thermodynamic optimization in the research and design of aircraft environmental control system (ECS). The chosen example is a military aircraft ECS with an air cycle machine (ACM) and a counter-flow heat exchanger. The effect of some design features for ECS entropy generation was discussed, such as the efficiency of heat exchanger and turbine in ACM, the air steam pressure and temperature of bleed from air-fighter engine compressor, and the air temperature of delivery to the cabin and comfort the pilot. Numerical results show that the temperature of the air stream that the ECS delivers to the cabin can be optimized for system operation at minimal entropy generation, when the components geometry parameters are fixed. The method illustrated is applicable to more complex and realistic aircraft environmental control systems.

     

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    • References(1)
  • [1] Moran Michael J. Availability analysis:a guide to efficient energy use[M]. New Jersey:Prentice-Hall, 1982 [2] Bejan Adrian, Siems David L. The need for exergy analysis and thermodynamic optimization in aircraft development [J]. Exergy, 2001, 1(1):14-24 [3] Figliola R S, Tipton Robert. An exergy-based methodology for decision-based design of integrated aircraft thermal systems . AIAA 2000-01-5527, 2000 [4] Vargas Jose V C, Bejan Adrian. Thermodynamic optimization of finned crossflow heat exchangers for aircraft environmental control system [J]. International Journal of Heat and Fluid Flow, 2001, 22(2):657-665 [5] Isabel Perez-Grande, Teresa J Leo. Optimization of a commercial aircraft environmental control system [J]. Applied Thermal Engineering, 2002, 22(4):1885-1904
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