Hydrodynamic and Heat-and-Mass Transfer Processes in Space Station Water Recovery Systems

Paper #:
  • 932075

Published:
  • 1993-07-01
Citation:
Samsonov, N., Bobe, L., Novikov, V., Abramov, G. et al., "Hydrodynamic and Heat-and-Mass Transfer Processes in Space Station Water Recovery Systems," SAE Technical Paper 932075, 1993, https://doi.org/10.4271/932075.
Pages:
12
Abstract:
The paper systematizes typical hydrodynamic and heat-and-mass transfer chemical engineering processes realized in water recovery systems. The impact of micro-gravity on the processes is analyzed and general principles of the process organization in gas/liquid fluids are described. As examples, some typical separation processes in a coccurred flow channel with liquid suction through a porous wall, liquid evaporation into a vapour/gas fluid and vapour condensation from the vapour/gas mixture are considered for water recovery systems. A versatile approach based on an extended analogy between friction, heat transfer and mass transfer and on limited relative laws of a boundary layer at the permeable surface is suggested for an analysis and calculation of the friction resistance of a two-phase flow, heat transfer and mass transfer on evaporation and condensation. Recommendations for an analysis of the influence of free convection are made. The results obtained may be used for new system designs for future space stations.
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