Abstract: A reagent (26) combines exothermically with a cold refrigerating fluid exiting a refrigerating evaporator during a refrigeration cycle, then releases the refrigerating fluid endothermically once it has been heated to a sufficiently high temperature by means of a heating element (17) during a regeneration cycle during which the released refrigerating fluid condenses in a pressurized tank. The reagent is confined inside stainless steel walls (29, 31, 34) which prevent it from swelling. These walls include perforated tubes (34) lining channels (32) in which the mass exchanges take place during the combining and separating reactions. The heating element (17) is fitted in a central cavity (46). An air flow (54), which is interrupted during regeneration, evacuates the heat of the combining reaction by means of fins (56). The invention prevents the block of reagent from distorting and becoming progressively inoperative over repeated cycles.

Abstract: Method and box for conditioning products which must be stored under determined temperature conditions, generally different from the conditions of the environment. The method consists in placing within an open, thermally insulated enclosure (1), some removable reserve elements (26 to 30), placing the products within the volume delimited by the reserve elements (26 to 30) inside the enclosure (1), removing the reserve elements (26 to 30), replacing them by heat or cold accumulating elements brought to the required predetermined temperature and having shapes and dimensions similar to those of the reserve elements (26 to 30), and closing the enclosure (1). Application to the conditioning of products sensitive to temperature, especially such as vaccines, serums, etc.