Refrigeration cycle operatable by low thermal potential energy sources

摘要

The invention provides an absorption-refrigeration system including: generator means in which the vapor of a volatile refrigerant, dissolved in an absorbent, is driven off the absorbent by heat exchange with a source of thermal energy; condenser means in which the refrigerant vapor is turned into liquid refrigerant; evaporator means in which the liquid refrigerant is turned into refrigerant vapor by heat exchange with the substance to be refrigerated, and absorber means in which the refrigerant vapor is redissolved in the absorbent to be recycled, characterized in that the refrigerant is selected from the group of fluoro-and fluoro-chloro-hydrocarbons, that the absorbent is an organic polar solvent possessing a strong chemical affinity with respect to the refrigerant, and that at least one of the heat exchanges involves direct contact between the partners to the heat exchange, which partners are mutually non-reactive and non-miscible.