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This paper describes the results of research and tests of different patterns of distillation processes for water reclamation from urine accomplished by NIICHIMMASH in cooperation with other companies. Several typical patterns of evaporation to air flow from water-retentive porous bodies, from the surface confined by capillary/porous membranes and from free liquid surface in rotary units under atmospheric and reduced pressure are analyzed. Relevant condensation processes are reviewed. Performance data for distillation unit of SS MIR system for water reclamation from urine are outlined. The paper highlights the prospects of distillation hardware development.

A concept of developing a regenerative water management system (RWMS) for first lunar base missions is reviewed. The principal feature of the concept proposed is the maximum possible unification of RWMS for long-duration orbiting station and a lunar base with due regard to possible modification of the hardware for lunar gravity conditions. The paper is based on the expertise in research, development, testing and flight operation of RWMS in Russia. An upgraded RWMS of the International Space Station may be used for first lunar missions.