COMPOSITE MATERIAL FOR STORING HEAT ENERGY AT HIGH TEMPERATURES

The invention relates to a composite material for storing heat energy at high temperatures (225 to 488°C), formed by a porous carbon structure at least partially filled with LiOH/KOH, in which a large amount of heat energy can be stored or released very quickly. The carbon structure is characterized...

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Bibliographische Detailangaben
Hauptverfasser:	ALEIX JOVE LLOVERA, ELENA PALOMO DEL BARRIO, VANESSA HO-KON-TIAT, YANNICK ANGUY, CRISTINA PRIETO RIOS, FREDERIC NOEL, DAVID MOURAND, SABRI BEN KHEMIS, JEAN LUC DAUVERGE
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DYES LIME, MAGNESIA MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	The invention relates to a composite material for storing heat energy at high temperatures (225 to 488°C), formed by a porous carbon structure at least partially filled with LiOH/KOH, in which a large amount of heat energy can be stored or released very quickly. The carbon structure is characterized by high volumetric thermal conductivity, low density, highly interconnected porosity and relatively high modulus of elasticity. The significant properties of the LiOH/KOH mixtures are: large amount of energy involved in full crystallization/fusion, fairly low relative volume expansion upon melting, and fairly low subcooling. The main advantages of the resulting composites are: very high energy density, relatively low volume expansion, highly enhanced heat transfer, thermoadaptability, stability and insignificant hysteresis.