Abstract: The invention relates to a thermochemical device and to a method for producing refrigeration at very low temperature. The device produces refrigeration at a temperature Tf<?20° C., from an available heat source at a temperature Th of 60-80° C. and a heat sink at the ambient temperature To of 10° C.-25° C. It comprises two coupled dipoles, operating in phase opposition. The thermochemical phenomena in one of the dipoles are such that this dipole may produce refrigeration at Tf with a heat sink at the ambient temperature To. The thermochemical phenomena in the other dipole are such that this dipole may be regenerated from the heat source Th and a heat sink at the temperature To.

Abstract: The present invention relates to a device and a method for air conditioning a building using an intermittent heat source whereof the maximum temperature is 70° C. and a heat sink at a temperature of 15° C. The device comprises 3 or 4 thermochemical dipoles each comprising an evaporator-condenser unit and a reactor connected by means for circulating G between them and means for interrupting the flow of G. The reactors are the seat of reversible processes between G and a liquid or a solid, and the evaporators-condensers are the seat of a liquid-gas phase change of G; the reactors are equipped with means for exchanging heat between them and means for controlling the heat exchange; the thermochemical processes in the dipoles may be identical or different; the device comprises a heat source at a variable temperature Tc, the maximum temperature being 70° C., and a heat sink at a temperature To of 15° C.

Abstract: The invention relates to refrigeration using a thermochemical system based on the coupling of two reversible physico-chemical phenomena between a gas and a solid or liquid sorbent, one at low temperature (the LT phenomenon) and the other at a higher temperature (the HT phenomenon). The LT phenomenon is a liquid/gas phase change of the fluid G or an absorption of the fluid G by a liquid sorbent. The HT phenomenon is a reversible sorption of the fluid G by a liquid or solid sorbent. The endothermic phase of the LT phenomenon takes place in a reactor thermally isolated from the ambient environment. The exothermic phase of the LT phenomenon takes place in a condenser in communication with the reactor in which the HT phenomenon takes place, the condensed fluid G then being transferred to the reactor in which the endothermic phase of the LT phenomenon takes place.

Abstract: The invention relates to refrigeration at TU by a reversible sorption system. The installation comprises a reactor (1) in which a reversible sorption between a gas G and a sorbent S takes place, a device (2) in which a reversible phenomenon involving the gas G takes place, means for bringing (2) into communication with (1), and means for isolating them, the equilibrium curve for the reversible phenomenon in (2) lying within a lower temperature range than that of the equilibrium curve for the reversible sorption in (1) in the Clausius-Clapeyron plot. The device (2) contains, apart from the gas G, a liquid/solid phase change material M having a solidification temperature TS below the frigeration working temperature TU. Use for freezing various products or for producing chilled water or ice.

Abstract: The invention relates to refrigeration at TU by a reversible sorption system. The method is implemented in an installation comprising an endothermic component (EC) and an exothermic component consisting of the reactors (1) and (2). The reactors (1) and (2) are in thermal contact, each of them constituting an active thermal mass for the other, and they are provided with heating means (6) and heat extraction means (5). (1), (2) and (EC) are provided with means for bringing them into selective communication, and reversible phenomena involving a gas G take place therein, the equilibrium curve for the phenomenon in (1) lying within a higher temperature range than that of the equilibrium curve for the phenomenon in (2), which is itself higher than that of the curve for the phenomenon in (EC) in the Clausius-Clapeyron plot.

Abstract: The invention relates to a thermochemical device and to a method for producing refrigeration at very low temperature. The device produces refrigeration at a temperature Tf<?20° C., from an available heat source at a temperature Th of 60-80° C. and a heat sink at the ambient temperature To of 10° C.-25° C. It comprises two coupled dipoles, operating in phase. One of the dipoles may be regenerated from a heat source at the temperature Th and a heat sink at To, and produce refrigeration at the temperature Tf with a heat sink at a temperature below the ambient temperature To. The other dipole may be regenerated from a heat source at the temperature Th and a heat sink at the temperature To.

Abstract: The invention relates to a thermochemical device and to a method for producing refrigeration at very low temperature. The device produces refrigeration at a temperature Tf<?20° C., from an available heat source at a temperature Th of 60-80° C. and a heat sink at the ambient temperature To of 10° C.-25° C. It comprises two coupled dipoles, operating in phase opposition. The thermochemical phenomena in one of the dipoles are such that this dipole may produce refrigeration at Tf with a heat sink at the ambient temperature To. The thermochemical phenomena in the other dipole are such that this dipole may be regenerated from the heat source Th and a heat sink-at the temperature To.

Abstract: The invention relates to refrigeration using a thermochemical system based on the coupling of two reversible physico-chemical phenomena between a gas and a solid or liquid sorbent, one at low temperature (the LT phenomenon) and the other at a higher temperature (the HT phenomenon). The LT phenomenon is a liquid/gas phase change of the fluid G or an absorption of the fluid G by a liquid sorbent. The HT phenomenon is a reversible sorption of the fluid G by a liquid or solid sorbent. The endothermic phase of the LT phenomenon takes place in a reactor thermally isolated from the ambient environment. The exothermic phase of the LT phenomenon takes place in a condenser in communication with the reactor in which the HT phenomenon takes place, the condensed fluid G then being transferred to the reactor in which the endothermic phase of the LT phenomenon takes place.