摘要
采用大气环境模拟舱和地面实验平台来模拟机载膜制氮装置的工作环境,选择2种固定的出口质量流量,通过模拟不同的飞行高度及调整进气压力和膜工作温度,对机载膜制氮系统的分离性能进行了全面实验.实验结果显示,进气压力对分离性能的影响最大,而飞行高度和膜工作温度对分离性能的影响较小,此外,不同的出口流量也对分离性能有一定的影响.进气压力和温度增加均会使产品气的氧浓度降低,分离效率下降,且产品气的出口流量越大,进气温度对两者的影响也越大.当进气温度较高时,飞行高度对分离效率的影响与产品气的出口流量有关:当出口流量较小时,飞行高度越高,分离效率就越低,而当出口流量较大时,变化趋势则相反.
An atmosphere environment simulation room and a ground-based experiment platform were adopted to simulate the working environment of onboard hollow fiber membrane separation device.Fixing the outlet mass flux,comprehensive experiments by simulating different heights and adjusting inlet gas pressure or working temperature of the membrane were conducted.The result shows that the inlet gas pressure strongly impacts separation performance,while the flight height and membrane working temperature have less influence,and different outlet flux also has some influence.Increasing the inlet gas pressure or the membrane working temperature reduces the oxygen concentration of the product and debase the separation efficiency,and both of the impacts caused by membrane temperature increase with the augment of the outlet flux.When the membrane temperature gets higher,the impact of flight height on separation efficiency is also influenced by the outlet flux： the separation efficiency rises with the flight height at lower outlet flux,but descends with the growth of flight height at higher outlet flux.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2011年第3期107-111,共5页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(50906066)
关键词
机载制氮系统
分离效率
氧浓度
中空纤维膜
地面实验
onboard inert gas generating system
separation efficiency
oxygen concentration
hollow fiber membrane
ground-based experiment
