Fine particle dispersion compositions and uses thereof
First Claim
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1. A dispersion composition, said composition comprising fine particles of metal or metal oxide dispersed in a synthetic oil medium and optionally, at least one dispersant.
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Abstract
The present invention relates to dispersion compositions comprising synthetic oils or other heat transfer fluids and fine particles. The compositions also comprise at least one dispersant. The dispersion compositions have improved thermal conductivity properties, which may translate to improved energy efficiency performance in a variety of heat transfer applications. Such applications include vapor compression air conditioning and refrigeration systems of all types, secondary heat transfer fluids, and other heating or cooling fluid applications.
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30 Claims
- 1. A dispersion composition, said composition comprising fine particles of metal or metal oxide dispersed in a synthetic oil medium and optionally, at least one dispersant.
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13. A synthetic oil composition comprising fine particles of metal or metal oxide, and at least one dispersant, and having enhanced thermal conductivity based on the presence of the fine particles.
- 14. A method for preparing a dispersion composition comprised of fine particles of metal or metal oxide, synthetic oil and at least one dispersant, said method comprising combining said at least one dispersant with said synthetic oil, combining said fine particles of metal or metal oxide with the dispersant and synthetic oil combination to form a slurry, and providing the resultant slurry to a milling device to produce said dispersion composition.
- 26. A method of using a refrigeration oil having fine particle dispersion, said method comprising providing said refrigeration oil to a mechanical system to transfer heat from a heat source to a heat sink.
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30. A method of using a heat transfer fluid dispersion composition comprising fine particles of metal or metal oxide dispersed in a heat transfer fluid selected from water, aliphatic alcohols, aliphatic glycols, silicones, hydrocarbons, fluorine-containing refrigerants, or non-fluorine containing refrigerants and at least one dispersant, said method comprising providing said heat transfer fluid dispersion composition to a mechanical system to transfer heat from a heat source to a heat sink.
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