Patent ID: 8327660

Claim:
A device for producing refrigeration comprising two dipoles, a refrigeration-producing dipole D 2 and a second dipole D 1 , wherein: dipole D 2 produces refrigeration at T f and is regenerated from the heat source at T h with the heat sink at the ambient temperature T o ; dipole D 1 is regenerated from the heat source T h and the heat sink at the temperature T o ; dipole D 1 comprises an evaporator and condenser EC 1 , which is an enclosure in which an evaporation or a condensation occurs, and a reactor R 1 connected via a line enabling the controlled flow of gas, and dipole D 2 comprises an evaporator and condenser EC 2 , which is an enclosure in which an evaporation or a condensation occurs, and a reactor R 2 connected by a line enabling the controlled flow of gas; the evaporator and condenser EC 1 contains a gas G 1 and the reactor R 1 contains a sorbent S 1 which forms a reversible physico-chemical process with the gas G 1 , and the evaporator and condenser EC 2 contains a gas G 2 and the reactor R 2 contains a sorbent S 2 which forms a reversible physico-chemical process with the gas G 2 ; wherein the sorbent S 1 and the sorbent S 2 are different; the gases and the sorbents used provide that at a given pressure, equilibrium temperatures of thermochemical processes in the reactors R 1 and R 2 and the evaporators and condensers EC 1 and EC 2 are such that T(EC 1 )≦T(EC 2 )<T(R 1 )<T(R 2 ); and the two dipoles D 1 and D 2 are coupled together only during the regeneration phase of the device, said coupling being performed either by a thermal transfer from EC 2 of dipole D 2 to EC 1 of dipole D 1 when the reactive gases G 1 and G 2 contained in the two dipoles are different, or by a mass transfer between the two reactors R 1 and R 2 when the reactive gases contained in the two dipoles are identical, wherein said device produces refrigeration at a temperature T f below −20° C., from a heat source at a temperature T h of around 60-80° C. and from a heat sink at the ambient temperature T o of around 10° C. to 25° C.