METHOD/SYSTEM FOR ACCUMULATING HEAT OR COLD IN AN ACCUMULATING COMPOSITE MATERIAL, SUCH AN ACCUMULATING COMPOSITE MATERIAL AND A METHOD FOR PRODUCING SUCH AN ACCUMULATING COMPOSITE MATERIAL

摘要

The invention concerns a method/system for accumulating heat or cold in an accumulating composite material, a suitable accumulating composite material and a method for producing a suitable accumulating composite material. The composite material comprises a matrix of pressed, expanded graphite and phase change material (PCM) as a heat accumulating medium. The phase transition of the PCM can occur between the following states: solid-solid, liquid-liquid or solid-liquid. The graphite matrix can be loaded with the PCM by vacuum impregnation or by immersing the graphite matrix in the liquid PCM.