再生燃料电池微重力气液分离器性能仿真分析

针对空间再生燃料电池储能系统的应用需求,开发了可在微重力条件下工作的气液分离装置。在水流量239 L/h,气体流量120 s L/h条件下,采用CFX欧拉两相流模型计算了不同转速对分离器性能的影响。计算结果表明,气体分离率随转速升高而下降,功率消耗呈先下降后上升的趋势,转速约2 980 r/min时功耗最小,计算结果和地面试验数据的吻合较好。

Simulation study on performance of micro-gravity gas/liquid separator of RFCS

A gas/liquid separator of regenerative fuel cell system (RFCS) was developed for micro-gravity application.A two phase Euler-Euler fluid computational model with CFX was taken to evaluate the influence of rotational speed at the liquid water flow rate of 239 L/h and nitrogen gas of 120 sL/h.As the rotational speed increases,the gas separating efficiency decreases and the power consumption has the minimum value at 2 980 r/min.The results go well with the test data taken under gravity condition.