Composite materials for thermal energy storage
First Claim
1. A composite material for thermal energy storage comprising a solid state phase change material selected from the group consisting of pentaerythritol, pentaglycerine, neopentyl glycol, tetramethylol propane, monoaminopentaerythritol, diaminopentaerythritol, tris(hydroxymethyl)acetic acid, and mixtures thereof;
- said solid state phase change material contacting materials selected from the group consisting of metals, carbon siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, porous rock, and mixtures thereof.
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Accused Products
Abstract
The present invention discloses composite material for thermal energy storage based upon polyhydric alcohols, such as pentaerythritol, trimethylol ethane (also known as pentaglycerine), neopentyl glycol and related compounds including trimethylol propane, monoaminopentaerythritol, diamino-pentaerythritol and tris(hydroxymethyl)acetic acid, separately or in combinations, which provide reversible heat storage through crystalline phase transformations. These phase change materials do not become liquid during use and are in contact with at least one material selected from the group consisting of metals, carbon siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, porous rock, and mixtures thereof. Particulate additions, such as aluminum or graphite powders, as well as metal and carbon fibers can also be incorporated therein. Particulate and/or fibrous additions can be introduced into molten phase change materials which can then be cast into various shapes. After the phase change materials have solidified, the additions will remain dispersed throughout the matrix of the cast solid. The polyol is in contact with at least one material selected from the group consisting of metals, carbon siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, and mixtures thereof.
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Citations
28 Claims
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1. A composite material for thermal energy storage comprising a solid state phase change material selected from the group consisting of pentaerythritol, pentaglycerine, neopentyl glycol, tetramethylol propane, monoaminopentaerythritol, diaminopentaerythritol, tris(hydroxymethyl)acetic acid, and mixtures thereof;
- said solid state phase change material contacting materials selected from the group consisting of metals, carbon siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, porous rock, and mixtures thereof.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for impregnating a solid-state phase change material into porous and/or fibrous previously solidified solid substances comprising:
contacting a water solution of the phase change material with the solid-state phase change material to effect impregnating the solid material with the phase change material and removing the water in a manner to rigidly bind residue phase change material to the solid material. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A method for impregnating stone-like construction materials formed from a coalition of previously solidified solid precursor particles into a solid mass comprising:
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contacting a sufficient amount of solid-state phase change material with water to form a solution; utilizing a previously solidified porous aggregate solid material that is compatible with the particles forming the construction material; contacting the solution of the solid-state phase change material with the porous aggregate in a manner to effect impregnating the aggregate material with the solid-state phase change material and rigidly binding the residue solid-state phase change material to the aggregate material; contacting the porous aggregate material impregnated with the phase change material with the precursor particles of the construction material to form a combined mass; and coalescing the combined mass into a solid mass to form the stone-like construction material. - View Dependent Claims (26, 27)
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28. A method of impregnating stone-like construction materials formed from a coalition of precursor particles into a solid mass comprising:
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contacting a sufficient amount of solid-state phase change material with water to form a solution, contacting the solution of phase change material with a porous aggregate material that is compatible with the particles forming the construction materials; contacting the porous aggregate-phase change material with the precursor particles of the construction material to form a combined mass; and coalescing the combined mass into a solid mass to form a stone-like construction material, and wherein said phase change material is selected from the group consisting of pentaerythritol, penthglycerine, neopentyl glycol, tetramethylol propane, monoaminopentaerythritol, diaminopentaerythritol, tris(hydroxymethyl)acetic acid, and mixtures thereof.
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Specification