Abstract: The present invention relates to a device for heat exchange between a refrigerant in the course of vaporization and a fluid to be cooled in the course of freezing. According to the invention, the device comprises a conduit for the fluid to be cooled, a shell making, around the conduit, a chamber for the passage of the refrigerant, and a mechanical means for separating, from the wall of the conduit, any solid phase of the fluid to be cooled, consisting of a rotor provided with radial and flexible filaments. The invention applies in particular to the production of homogeneous mixtures of water and ice.

Abstract: Method for storing a coolant fluid comprising two phases of one and the same substance in melting equilibrium, according to which an enclosure for storing said fluid is used in which the coolant fluid stored settles into a lower liquid layer and an upper solid layer, the coolant fluid to be stored is introduced into the enclosure at the level of the lower layer, and the coolant fluid to be removed from storage is extracted from the enclosure at the level of the upper layer, wherein, in combination, on the one hand, a gaseous headspace is set up between the upper layer and the upper wall of the enclosure and, on the other hand, the coolant fluid to be removed from storage is extracted, from a withdrawal zone located at the level of the interface between the upper layer and the gaseous headspace, through a vertical flow by generating a vortex.

Abstract: The present invention relates to a method and device for cold transfer. According to the invention, in an intermediate loop (2) a cold-bearing fluid being in diphasic form, that is, a homogeneous mixture of water and ice, for example. This fluid is heat exchanged, on the one hand with a primary source of cold, and on the other hand with the various secondary sources of heat represented by each enclosure (1) to be cooled. the invention is adaptable to the thermal control of a vinification process.