Refrigerant and heat transfer fluid additive
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United States of America Patent
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Aug 13, 2002
Issued Date -
N/A
app pub date -
Nov 22, 2000
filing date -
Nov 2, 1998
priority date (Note) -
Expired
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Abstract
An additive suited to use in combination with heat transfer media comprises a chemically stabilized nano-particle size powder. Suitable powders include those of copper, beryllium, titanium, nickel, iron, alloys or blends thereof, and carbon. The surface of the powder is modified by surface complexation or physical adsorption with a chemical agent. The additive, when mixed with a heat transfer medium, forms a colloidal dispersion which exhibits enhanced heat transfer capacity and thermal conductivity, stable chemical composition, faster heat transfer rates, dispersion maintenance which are beneficial to most heat transfer systems.
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