Process for producing cold and/or heat by using a non-azeotropic mixture of fluids in a cycle with ejector

Claim 1

A process for producing cold and/or heat by using a working fluid (F), characterized by the steps of : (a) subjecting a working fluid (F), in gaseous state, to condensation under a pressure (CP) by transferring the condensation heat of fluid (F) to an external fluid, said fluid (F) comprising a non-azeotropic mixture of 5-95 %, in molar proportion, of a first constituent and 95-5 %, in molar proportion, of a second constituent miscible in liquid phase with the first consituent the constituents of said mixture being chemically different and capable of evaporating but not to crystallizing under the operating conditions of the process, (b) subjecting the resultant condensate to a pressure decrease and supplying heat thereto under said decreased pressure (EP) so as to partly evaporate it and separating the vaporized fraction (F1) from the liquid phase remaining fraction (F2), (c) increasing the pressure of fraction (F2) up to a pressure (BP) higher than the pressure (CP) of step (a) and supplying heat to said fraction (F2), so as to obtain it (F2) in vapor phase, and (d) subjecting the vapor phase fraction (F2) obtained in step (c) to expansion through ejection means and driving along with said expanded fraction the vapor phase fraction (F1) obtained from step (b), so as to admix said two fractions and to reconstitute the fluid (F) in gaseous state at the pressure (CP) of step (a).