Heat-transfer concentrate, method of manufacturing it and...

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 5/00 (2006.01) C09K 5/06 (2006.01) C09K 5/08 (2006.01)

Patent

CA 2210095

The invention concerns a heat-transfer concentrate characterized by a storage- stable dispersion of a heat-transfer medium and gallium adsorbed on at least one finely particulate and/or porous solid. The invention also concerns a method of manufacturing the concentrate, a heat-transfer mixture consisting of a concentrate as proposed by the invention and another heat-transfer medium, and the use of the heat-transfer mixture to store and convey heat in reactors with heat exchangers, as well as its use in heat pumps and as a thermochemical energy-storage medium. The invention further concerns a latent-heat accumulator comprising a container (1), a primary heating circuit (2) and a secondaty heating circuit (3) designed to extract the latent heat stored in a heat-storage medium (4), the accumulator being characterized in that the heat- storage medium (4) consists of a heat-transfer mixture, as proposed by the invention, comprising a heat-transfer concentrate as proposed by the invention plus another heat-transfer medium.

L'invention concerne un concentré caloporteur caractérisé par une dispersion stable au stockage d'un agent caloporteur et de gallium adsorbé sur au moins un solide à fines particules et/ou poreux. L'invention concerne également un procédé permettant de produire ce concentré, un mélange caloporteur constitué d'un concentré selon l'invention et d'un autre agent caloporteur, l'utilisation de ce mélange caloporteur pour accumuler et transporter la chaleur dans des réacteurs pourvus d'échangeurs de chaleur, ainsi que l'utilisation dudit mélange dans des pompes à chaleur et en temps qu'agent d'accumulation d'énergie thermochimique. L'invention concerne en outre un accumulateur de chaleur latente comprenant un récipient (1), un circuit de chauffage primaire (2) et un circuit de chauffage secondaire (3) servant à l'extraction de la chaleur latente stockée dans un agent d'accumulation de chaleur (4), l'accumulateur présenté se caractérisant en ce que l'agent d'accumulation de chaleur (4) est constitué d'un mélange caloporteur selon l'invention, c'est-à-dire constitué du concentré caloporteur présenté et d'un autre agent caloporteur.

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