| Citation: | ZHANG Y P，BIAN Q，YANG R Z，et al. Evaluation method of H2O penetration depth of drying reactor based on temperature gradient[J]. Journal of Beijing University of Aeronautics and Astronautics，2024，50（10）：3123-3130 （in Chinese） doi: 10.13700/j.bh.1001-5965.2022.0764
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There is no direct evaluation method for the H2O penetration depth of the drying reactor in the CO2 removal system in the space station. Therefore, an indirect evaluation method based on the temperature gradient characteristics of the temperature sensor inside the drying reactor was proposed. Since silica gel has the physical characteristic of releasing heat while adsorbing H2O and absorbing heat while desorbing H2O, the variation characteristics of the temperature sensor data curve in the adsorption and desorption cycles under different boundary conditions were analyzed by considering the depth position of the temperature sensor in the drying reactor. The index set and evaluation method reflecting the H2O penetration depth of the drying reactor were proposed, and the proposed method is verified in the closed chamber test of the system, the verification results show the rationality of the index set and the effectiveness of the evaluation method.
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