Air Saving Scheme Design for CO2 Removal System in Space Station
Targeting the problem that periodic vacuum desorption of CO2 removal system in space station will lose a lot of gas,the air saving technology for the system was studied.Based on the study of the adsorption and desorption characteristics of the molecular sieve materials,the key factors af-fecting the gas loss of the system were found.Combined with the system operation process and the operation cycle,considering the pump working characteristics,life requirements and CO2 removal performance of the system,the system air saving scheme meeting the technical criteria requirements was proposed.The gas loss of the system was verified by the experiment for the method of actual measurement and sampling of lost gas.The test data and the on orbit operation data of the space sta-tion showed that the designed air saving scheme could control the gas loss of the system to less than 45 g/d which could meet the design technical criteria requirements.
space stationCO2 removal systemgas lossair saving scheme
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