Relating to cooling containers of beverages

A beverage pack comprising a container, beverage held in the container, and beverage cooling means provided in, or in association with, the container and comprising a phase-change medium adapted in use to change phase and extract heat from the beverage, and means selected from the group consisting of adsorption means and absorption means provided in use to adsorb or absorb the phase-change medium, the one of the adsorption means and absorption means being one or more of:

• activated carbon, ammonium nitrate, and a polymer.

A cooling unit adapted for placement into a chamber defined by a container to cool beverage in the chamber of the container, the unit comprising a phase change medium adapted to change phase and extract heat from the beverage and means selected from the group consisting of adsorption means and absorption means.

A method of cooling a beverage disposed in a chamber defined by a container including a beverage cooling means disposed in the chamber and having a phase change medium and means selected from the group consisting of adsorption means and absorption means, the method comprising extracting heat from the beverage by use of a phase change of the phase change medium.

A beverage pack comprising a container defining a chamber, the beverage held in the chamber of the container, and beverage cooling means provided in the chamber of the container and comprising means selected from the group consisting of adsorption means and absorption means and an aqueous phase-change medium adapted in use to change phase and extract heat from the beverage.

A beverage pack comprising a container the beverage held in the container, and beverage cooling means provided in, or in association with, the container and comprising an aqueous phase-change medium adapted in use to change phase and extract heat from the beverage, and means selected from the group consisting of adsorption means and absorption means configured to one of adsorb and absorb the phase-change medium, the one of the adsorption means and the absorption means being provided in a detachable cartridge.

A beverage pack comprising a container defining a chamber, the beverage held in the chamber of the container, and beverage cooling means provided in the chamber of the container and comprising an aqueous phase-change medium adapted in use to change phase and extract heat from the beverage and means selected from the group consisting of adsorption means and absorption means, a sub-atmospheric pressure provided in the cooling means and said phase-change medium are so selected that, when at such pressure, said phase-change medium boils at a temperature not exceeding 20.degree. C.

A beverage pack comprising:

• a container, the beverage held in the container;
• and
• beverage cooling means provided in, or in association with, the container and comprising, a phase-change medium adapted in use to change phase and extract heat from the beverage, and means selected from the group consisting of adsorption means and absorption means provided in use to one of adsorb and absorb the phase-change medium, the one of the adsorption means and the absorption means provided in a detachable cartridge.