METHOD OF PRODUCTION OF COLD Russian patent published in 1997 - IPC

FIELD: refrigerating engineering. SUBSTANCE: method consists in preparation of solution through contact of solvent and substance to be dissolved which possesses positive heat of solution in solvent, throttling and evaporation of solution and separation of substance being dissolved accompanied by absorption of heat from object being cooled, compression of vapor-gas mixture thus obtained, condensing solvent and mixing it with substance being dissolved to obtain solution at which separation of substance being dissolved is carried out simultaneously with evaporation of solvent and formation of solution occurs simultaneously with condensation of solvent; used as solvent is substance which changes from liquid state to vapor and vice versa, substances in any state of aggregation possessing positive thermal effect of solution in solvent being used as substances to be dissolved. For realization of this method, use may he made of gaseous substance which does not change its state of aggregation within range of pressures and temperatures at which method is realized; well-known solvents may be used for the purpose. EFFECT: enhanced efficiency. 5 cl