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In order to improve a heat storage device comprising a storage container which has an inner chamber for accommodating alkali and alkaline earth compounds, in particular alkali and alkaline earth halides, and their eutectics as storage medium such that mechanical stresses no longer occur and the beha

In order to improve a heat storage device comprising a storage container which has an inner chamber for accommodating alkali and alkaline earth compounds, in particular alkali and alkaline earth halides, and their eutectics as storage medium such that mechanical stresses no longer occur and the behavior of the heat storage device is such that its capability for receiving and discharging energy may be calculated as far as possible, it is suggested that a substantially open-pored structure consisting of a material wettable by the storage medium be arranged in the inner chamber and that the structure be soaked with the storage medium.

대표청구항 ▼

Heat storage device comprising: a storage container of gas tight material having an inner chamber for accommodating anhydrous alkali and alkaline earth halides, and their eutectics as a storage medium in both a solid phase and a liquid phase, said storage medium being subject to substantial volume v

Heat storage device comprising: a storage container of gas tight material having an inner chamber for accommodating anhydrous alkali and alkaline earth halides, and their eutectics as a storage medium in both a solid phase and a liquid phase, said storage medium being subject to substantial volume variations of up to about 30% during transitions between its solid and liquid states, and a substantially open-pored structure consisting of a material wettable by the storage medium arranged in the inner chamber and having an average pore size of greater than approximately 0.1 mm, wherein said structure is soaked with the storage medium and accommodates the substantial volume variations of said storage medium to prevent damage to said storage container.