三床机载制氧系统性能仿真及影响因素分析

Simulation on performance and effects of parameters analysis on three-bed OBOGS

建立了三床机载分子筛制氧系统的数学模型,对系统性能进行仿真.仿真结果与实验值进行了对比,两者吻合较好,验证了模型和求解的正确性.在此基础上,对不同飞行高度和工作条件下系统的性能进行仿真预测,研究了产品气流量、吸附压力、冲洗定径孔大小和循环时间对系统工作性能的影响,为三床机载分子筛制氧系统的设计和优化提供了依据.

A set of mathematical models was built and utilized to simulate the performance of three-bed on-board oxygen generation system （OBOGS）. Then the results of simulation were compared with the data from experiments and the good agreements were obtained to validate the models and simulation process. Based on the validated simulation, the performance of the OBOGS at different flight altitudes and in different opera- tion conditions were predicted by simulation, and effects of some design and operation parameters such as product flow rate, feed pressure, purge orifice size and cycle time were investigated. It provides a guidance of design and optimization for three-bed OBOGS.