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摘要: 分析了工位送风在空间站的适用性，确定了评价指标。建立了物理模型和数学模型，分析了不同工位送风量和送风速度对舱内乘员工位区空气质量的影响，得到了CO2浓度、空气龄、空气新鲜度比、局部换气效率和工位区风速分布，同时与无工位送风进行了对比。结果表明，工位送风在较小风量时就可以满足空气质量要求，符合航天器轻量化原则；在相同总风量下加大工位送风量后，工位区的性能指标均有所改善；在工位送风量一定情况下，送风速度提高有助于改善舱内的沉闷感。 关键词: 空间站座舱 工位送风 空气龄 空气新鲜度比 CO2浓度 Performance analysis of task air supply in space station cabins By Liang Zhen★, Shen Henggen, Zhang Jili and Lu Yajun Abstract Analyses the applicability of task air supply to space station cabins and determines the evaluation indexes. Establishes physical and mathematic models, analyses the effect of different ventilation rates and supply velocities on air quality in the crew working area. Obtains the distribution of CO2 concentration, air age, air fresh degree ratio, spot air change efficiency and air speed in the working area, and compares the results with that without?task air supply. The results show that by the task air conditioning system smaller air volume supplied can meet the air quality requirement in line with the principle of lighter mass of the spacecraft, and that the evaluated indexes in the working area are better with large task ventilation rate on condition that total air volume remains the same, and that the larger supplied air speed in the working area has released the stuffy sense on condition that the task air supply volume remains the same. Keywords space station cabin, task air supply, air age, air fresh degree ratio, CO2 concentration