Process for producing an accumulator composite for...

Details Process for producing an accumulator composite for... Process for producing an accumulator composite for...

C - Chemistry, Metallurgy

09

K

C09K 5/06 (2006.01) F28D 20/02 (2006.01)

Patent

CA 2347327

The invention relates to a process for producing an accumulator composite for accumulating heat or cold from a matrix of compressed, expanded graphite and phase change material (PCM) which is introduced into this matrix, by vacuum impregnation of the matrix with the PCM, in which process the matrix, under atmospheric pressure and partially or completely immersed in a molten PCM or a salt solution, is fixed inside an impregnation vessel, and the impregnation vessel is then evacuated until the desired degree of loading of the matrix with the PCM has been achieved. This process provides, in a simple and inexpensive way, accumulator composites with a high degree of PCM loading and a correspondingly high energy density, excellent thermal conductivity and, on account of a residual porosity of 5%, high elasticity and stability.

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