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Open AccessArticle

Numerical Investigation on Heat-Transfer and Hydromechanical Performance inside Contaminant-Insensitive Sublimators under a Vacuum Environment for Spacecraft Applications

by Lijun Gao 1, Yunze Li 1,2,3,*, Huijuan Xu 1, Xin Zhang 1, Man Yuan 3,4 and Xianwen Ning 5
1
Advanced Research Center of Thermal and New Energy Technologies, Xingtai Polytechnic College, Xingtai 054035, China
2
School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
3
Institute of Engineering Thermophysics, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
4
School of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
5
Beijing Key Laboratory of Space Thermal Control Technology, Beijing Institute of Space Systems Engineering, Beijing 100094, China
*
Author to whom correspondence should be addressed.
Energies 2019, 12(23), 4562; https://doi.org/10.3390/en12234562
Received: 11 November 2019 / Revised: 25 November 2019 / Accepted: 28 November 2019 / Published: 29 November 2019
The contaminant-insensitive sublimator (CIS) is a novel water sublimator in development, which uses two porous substrates to separate the sublimation point from the pressure-control point and provide long-life effective cooling for spacecraft. Many essential studies need to be carried out in the field. To overcome the reliability issues such as ice breakthrough caused by large temperature or pressure differences, the CIS development unit model, the mathematical models of heat and mass transfer and the evaluation coefficient have been established. Numerical investigations have been implemented aiming at the impacts of physical properties of porous substrate, physical properties of working fluid, orifice layouts and orifice-structure parameters on the characteristics of flow field and temperature field. The numerical investigation shows some valuable conclusion, such as the temperature uniformity coefficient at the bottom surface of the large pore substrate is 0.997669 and the pressure uniformity coefficient at the same surface is 0.85361267. These numerical results can provide structure and data reference for the CIS design of lunar probe or spacesuit. View Full-Text
Keywords: contaminant-insensitive sublimator; porous substrate; feed-water; working fluid; temperature field; flow field contaminant-insensitive sublimator; porous substrate; feed-water; working fluid; temperature field; flow field
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Gao, L.; Li, Y.; Xu, H.; Zhang, X.; Yuan, M.; Ning, X. Numerical Investigation on Heat-Transfer and Hydromechanical Performance inside Contaminant-Insensitive Sublimators under a Vacuum Environment for Spacecraft Applications. Energies 2019, 12, 4562.

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  • Externally hosted supplementary file 1
    Doi: doi:10.3390/e21060578
    Link: https://www.mdpi.com/1099-4300/21/6/578
    Description: Xu, H.; Wang, J.; Li, Y.; Bi, Y.; Gao, L. A Thermoelectric-Heat-Pump Employed Active Control Strategy for the Dynamic Cooling Ability Distribution of Liquid Cooling System for the Space Station’s Main Power-Cell-Arrays. Entropy 2019, 21(6), 578; https://doi.org/10.3390/e21060578.
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