Organic heat transfer system, method and fluid
AssigneeThe Lubrizol Corporation
InventorsChristopher Frederick McFadden, Andrew J. Richenderfer, William D. Abraham, Alexander Sammut, Amy L. Short
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Abstract
The disclosed technology relates to a heat transfer fluid and a heat transfer system and heat transfer method employing the heat transfer fluid. In particular, the technology relates to a heat transfer fluid with low electrical conductivity, low flammability, and low freeze point that provides excellent peak temperature reduction in a heat transfer system, such as that for cooling a power system of an electric vehicle or a computer server.
Claims12
1-33. (canceled)
A method of cooling electrical componentry comprising immersing the electrical componentry in a bath comprising a heat transfer fluid comprising hydrocarbon oil, overbased metal containing detergent, and dispersant, and operating the electrical componentry.
The method of claim 1, wherein the metal containing detergent comprises a calcium sulfonate detergent.
The method of claim 1, wherein the metal containing detergent is present from 10 to 5000 ppm of the heat transfer fluid.
The method of claim 1, wherein the dispersant comprises hydrocarbyl substituted succinimide dispersant, Mannich dispersant, hydrocarbyl substituted succinamide dispersant, hydrocarbyl substituted succinic acid ester, amide, esteramide, and mixtures thereof.
The method of claim 1, wherein the dispersant is present from 20 to 10,000 ppm of the heat transfer fluid.
The method of claim 1, wherein the ratio of dispersant to metal containing detergent from 4:1 to 1:2 on a weight basis.
The method of claim 1, further comprising ashless antioxidant.
The method of claim 1, wherein the ashless antioxidant is aminic antioxidant.
The method of claim 1, wherein the ashless antioxidant is phenolic antioxidant.
The method of claim 1, wherein the phenolic antioxidant comprises ditertbutyl phenol.
The method of claim 1, wherein the phenolic antioxidant is present from 0.01 to 5 percent by weight of the heat transfer fluid.
Dependencies are inferred from the claim text.