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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.