Abstract: A cooling system of a first psychrometric mixture having a condensation unit capable of condensing fluid contained in this mixture by direct contact with liquid comprising this fluid, the liquid being in the condensation unit at a temperature below that of the first mixture, and an evaporation unit capable of evaporating liquid in a second psychrometric mixture having fluid, the liquid being in the evaporation unit at a temperature greater than that of the second mixture, the condensation and evaporation units being coupled by a circulation circuit of the liquid, and a regulator for regulating the liquid flow.

Abstract: The invention provides a method and a system for extracting a substance comprised in a gaseous mixture, the extraction being carried out in a cyclic manner in 2N chambers (AA, BB, CC, DD), each provided with a heat-exchanger (A, B, C, D), N being an integer greater than or equal to 3. Each chamber carries out a cycle comprising the following four steps in succession: a frosting step, a defrosting step, a step of recovering the liquid phase and the residual gas phase, and a temperature-reduction step of reducing the temperature of the heat-exchanger. Further, sequencing the passage from one step to another in each of the chambers is such that the number of chambers carrying out the frosting step and also the total number of chambers carrying out the defrosting, recovery, and temperature-reduction steps are both equal to N.

Abstract: The nozzle (10) is suitable for expanding a saturated flow (D) and comprises a converging portion (2), a throat (3), a tube (4), and a mixer element (5) downstream from said throat (3) and suitable for mixing the vapor and liquid phases of the saturated flow.

Abstract: A cooling system of a first psychrometric mixture having a condensation unit capable of condensing fluid contained in this mixture by direct contact with liquid comprising this fluid, the liquid being in the condensation unit at a temperature below that of the first mixture, and an evaporation unit capable of evaporating liquid in a second psychrometric mixture having fluid, the liquid being in the evaporation unit at a temperature greater than that of the second mixture, the condensation and evaporation units being coupled by a circulation circuit of the liquid, and a regulator for regulating the liquid flow.