Latent heat storage material and process for manufacture of the latent heat storage material
First Claim
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1. A latent heat storage material comprising:
- a first phase change material;
at least one second phase change material different from the first phase change material; and
an expanded graphite material comprising particles prepared by cutting a planar foil-like web obtained by compression of expanded graphite particles into fragments having an average diameter of between about 5 microns (μ
m) and about 20 millimeters (mm),wherein the first phase change material and the at least one second phase change material are immiscible materials that do not form a single phase after mixing.
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Abstract
The invention relates to a latent heat storage material comprising a first phase change material, at least one second phase change material different from the first phase change material, and an expanded graphite material wherein the first phase change material and the at least one second phase change material are intermixed and the latent heat storage material exhibits a phase transition over a range of temperatures. The invention also relates to a process for the preparation of a latent heat storage material comprising combining a mixture of an expanded graphite material and a first phase change material with at least one different second phase change material.
25 Citations
22 Claims
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1. A latent heat storage material comprising:
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a first phase change material; at least one second phase change material different from the first phase change material; and an expanded graphite material comprising particles prepared by cutting a planar foil-like web obtained by compression of expanded graphite particles into fragments having an average diameter of between about 5 microns (μ
m) and about 20 millimeters (mm),wherein the first phase change material and the at least one second phase change material are immiscible materials that do not form a single phase after mixing. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A process for the preparation of a latent heat storage material comprising:
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combining a mixture of an expanded graphite material and a first phase change material with at least one different second phase change material wherein the first phase change material and at least one second phase change material are immiscible materials that do not form a single phase after mixing, wherein the expanded graphite material comprises particles prepared by cutting a planar foil-like web obtained by compression of expanded graphite particles into fragments having an average diameter of between about 5 microns (μ
m) and about 20 millimeters (mm). - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A latent heat storage material comprising:
a porous body of expanded graphite having a density of from about 5 grams per liter to about 500 grams per liter infiltrated with a first phase change material and at least one second phase change material, wherein the first phase change material and the at least one second phase change material are immiscible materials that do not form a single phase after mixing. - View Dependent Claims (21, 22)
Specification