FIELD: space vehicles; weightlessness conditions; heat rejection at various acceleration. SUBSTANCE: cooling liquid is circulating in one circulating loop and medium being evaporated is brought in relative heat-transfer contact and heat is discharged to atmosphere surrounding the space vehicle together with vapor. Heat-transfer contact takes place st least at two zones of working volume separated in space; varying magnitudes of pressure and temperature are set in these zones; cooling liquid and medium being evaporated are passed through these stages in the following sequence: cooling liquid first passes through stage of higher pressure and temperature and then through stages where pressure and/or temperature reduce gradually. EFFECT: enhanced efficiency. 1 cl, 1 dwg
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