System for storing energy

Abstract

A system for storing energy, including a heat accumulator, which includes a storage region and an outer wall surrounding the storage region, said storage region having a heat storage medium, an intermediate region between the storage region and the outer wall being at least partially filled with a gaseous medium and a support material, and the intermediate region being coupled to a pump device such that a pressure of the gaseous medium can be regulated is provided.

1 . A system for storing energy with a heat accumulator, which comprises a storage region, and an outer wall surrounding the storage region, wherein the storage region comprises a heat storage medium, wherein an intermediate region between the storage region and the outer wall is filled at least partially with a gaseous medium and a support material and wherein the intermediate region is coupled with a pumping device, in such a way that a pressure of the gaseous medium can be controlled. 
     
     
         2 . The system according to  claim 1 , wherein the intermediate region is filled at least partially with at least two different support materials. 
     
     
         3 . The system according to  claim 2 , wherein a statically bearing support material and a statically non-bearing support material are disposed in the intermediate region. 
     
     
         4 . The system according to  claim 2 , wherein the support materials are disposed in several layers. 
     
     
         5 . The system according to  claim 1 , also comprising a generator for generating electrical energy, which is coupled with the heat accumulator, so that the generator can be operated with heat from the heat accumulator. 
     
     
         6 . The system according to  claim 1 , further comprising a hot water tank, which is coupled with the heat accumulator in such a way that heat is released from the heat accumulator to the hot water tank in order to heat water in the hot water tank. 
     
     
         7 . The system according to  claim 1 , wherein the heat accumulator is configured to release the heat stored in the heat storage medium essentially over the entire area of the outer wall. 
     
     
         8 . The system according to  claim 1 , wherein a plurality of zones is constituted in the intermediate region, in such a way that a release of the heat stored in the heat storage medium takes place with differing intensity via the outer wall. 
     
     
         9 . The system according to  claim 1 , wherein a heat exchanger device is disposed inside the outer wall, said heat exchanger device being coupled with the storage region in such a way that a heat exchange medium of the heat exchanger device takes up heat from the heat storage medium, and wherein the heat exchanger device comprises a pipe element which penetrates the outer wall and by means of which the mentioned heat exchange medium can be transported into a region outside the outer wall. 
     
     
         10 . The system according to  claim 1 , wherein the storage region comprises a solid heat storage medium. 
     
     
         11 . The system according to  claim 10 , wherein the solid heat storage medium is evacuated. 
     
     
         12 . The system according to  claim 1 , wherein the storage region comprises a heat storage fluid surrounded by an inner wall. 
     
     
         13 . The system according to  claim 1 , wherein the storage region is coupled with a photovoltaic device, by means of which the heat storage medium can be heated. 
     
     
         14 . The system according to  claim 1 , wherein the storage region is coupled with a solar thermal system, by means of which the heat storage medium can be heated. 
     
     
         15 . The system according to  claim 1 , wherein a cooling element is disposed at an outer side of the outer wall.