Latent heat storage material

Details Latent heat storage material Latent heat storage material

C - Chemistry, Metallurgy

09

K

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

Patent

CA 2507476

The invention concerns a latent heat storage material in the form of a composite material consisting of a phase-change material to store latent heat and graphite flakes incorporated within it to improve the thermal conductivity. The graphite flakes are characterised by a high aspect ratio and a high anisotropy of thermal conductivity. The volume content of graphite flakes in the latent heat storage material according to the invention is between 10 and 40 %. The composite material can be obtained by mixing the components or infiltrating a bed containing graphite flakes with a liquid phase-change material. The graphite flakes are preferably aligned during mixing with the phase-change material by shaking or tamping, etc., so that the thermal conductivity in the direction that is favourable for the individual application is maximised.

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