Heat storage arrangement

Abstract

A heat storage arrangement for an intermediate storage of thermal energy. The heat storage arrangement includes at least one heat exchanger element which includes a liquid inlet and a liquid outlet, and at least one heat storage container which includes a heat storage medium. The at least one heat exchanger is stiff and has a liquid non-aqueous heat carrier having a freezing point of below −10° C. flow therein. The at least one heat storage container is flexible and closed, and is arranged to abut on the at least one heat exchanger element so that a heat transfer occurs between the liquid non-aqueous heat carrier and the heat storage medium.

1 . A heat storage arrangement for an intermediate storage of thermal energy, the heat storage arrangement comprising:
 at least one heat exchanger element comprising a liquid inlet and a liquid outlet, the at least one heat exchanger being configured to be stiff and to have a liquid non-aqueous heat carrier which has a freezing point of below −10° C. flow therein; and   at least one heat storage container configured to be flexible and closed, the at least one heat storage container comprising a heat storage medium and being arranged to abut on the at least one heat exchanger element so that a heat transfer occurs between the liquid non-aqueous heat carrier and the heat storage medium.   
     
     
         2 . The heat storage arrangement as recited in  claim 1 , wherein the heat storage medium is water. 
     
     
         3 . The heat storage arrangement as recited in  claim 1 , wherein the at least one heat storage container is a film bag made of a plastic. 
     
     
         4 . The heat storage arrangement as recited in  claim 1 , wherein the at least one heat storage container further comprises a coating of a heat-ray-reflecting layer. 
     
     
         5 . The heat storage arrangement as recited in  claim 1 , further comprising:
 a heat exchanger element carpet comprising a plurality of the at least one heat exchanger element,   wherein,   each of the plurality of the at least one heat exchanger element comprises a respective base surface,   the plurality of the at least one heat exchanger element are arranged via their respective base surfaces in a horizontal plane next to each other, and   each of the plurality of the at least one heat exchanger element is arranged to abut on the at least one heat storage container.   
     
     
         6 . The heat storage arrangement as recited in  claim 5 , wherein each of the plurality of the at least one heat exchanger element are fluidically connected in parallel to each other. 
     
     
         7 . The heat storage arrangement as recited in  claim 5 , further comprising:
 a first heat carrier circuit; and   a second heat carrier circuit,   wherein,   at least two of the plurality of at least one heat exchanger element are arranged so as to be fluidically separate from each other,   a first heat exchanger element is fluidically connectible to the first heat carrier circuit, and   a second heat exchanger element is fluidically connectible to the second heat carrier circuit.   
     
     
         8 . The heat storage arrangement as recited in  claim 1 , wherein,
 at least two of the at least one heat storage container are separately provided as a first heat storage container and a second heat storage container, and   the at least one heat exchanger element is arranged vertically between the first heat storage container and the second heat storage container.   
     
     
         9 . The heat storage arrangement as recited in  claim 8 , wherein the first heat storage element comprises a vertical height which is lower than a vertical height of the second heat storage element. 
     
     
         10 . The heat storage arrangement as recited in  claim 5 , further comprising:
 flexible connection elements,   wherein,   the plurality of the at least one heat exchanger element are connected to each other via the flexible connection elements.   
     
     
         11 . The heat storage arrangement as recited in  claim 5 , wherein the at least one heat exchanger element further comprises reinforcing ribs which are configured to extend vertically to the base surface of a respective at least one heat exchanger element. 
     
     
         12 . The heat storage arrangement as recited in  claim 1 , further comprising:
 a heat insulation trough configured to have the at least one heat exchanger element and the at least one heat storage container arranged therein.   
     
     
         13 . A building heating system comprising the heat storage arrangement as recited in  claim 1 , wherein the heat storage arrangement is connected at least to a heat pump.