Patent ID: 7621149

Claim:
An installation for refrigeration comprising an endothermic component comprised of a device (EC) and an exothermic component comprising a reactor ( 1 ) and a reactor ( 2 ), wherein: the reactors ( 1 ) and ( 2 ) are in thermal contact so that the reactor ( 1 ) constitutes a first active thermal mass for the reactor ( 2 ) and the reactor ( 2 ) constitutes a second active thermal mass for the reactor ( 1 ); the reactors ( 1 ) and ( 2 ) are selectively communicating with the device (EC); the reactor ( 1 ) and the reactor ( 2 ) are provided with a heater and a heat extractor; at the start of a cycle the reactor ( 1 ) comprises a sorbent S 1 and the reactor ( 2 ) comprises a sorbent S 2 , the sorbent S 1 participating in a first reversible sorption involving a gas G and the sorbent S 2 participating in a second reversible sorption involving the gas G, a first equilibrium temperature of the first reversible sorption in the reactor ( 1 ) being higher than a second equilibrium temperature of the second reversible sorption in the reactor ( 2 ) at a given pressure; and the device (EC) is an evaporator, the evaporator being comprised of a cylinder which is closed at its two ends and has a circular cross section, the circular cross section including, in its upper part, a concave circular arc corresponding to the cross section of an ice tray, wherein the evaporator further comprises: i) hollow fins comprising a solid/liquid phase change material; and ii) a tube, connected to a pipe transferring the gas G between the evaporator and the reactor ( 2 ), extending into the cylinder of the evaporator via a bore made in one of the ends of the cylinder, the tube being placed directly beneath a wall of the ice tray, and the gas G in the form of a boiling liquid being placed in the bottom of the evaporator.