초록 ▼

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 complexat

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.

대표청구항 ▼

1. A heat transfer composition comprising:a heat transfer medium; and an additive comprising: a powder selected from the group consisting of metals, metal oxides, alloys, and combinations thereof, the powder having an average particle size of from about 1 nanometer to about 100 microns, and a coatin

1. A heat transfer composition comprising:a heat transfer medium; and an additive comprising: a powder selected from the group consisting of metals, metal oxides, alloys, and combinations thereof, the powder having an average particle size of from about 1 nanometer to about 100 microns, and a coating on the powder, the coating including at least one chemical agent selected from the group consisting of organic corrosion inhibitors, inorganic corrosion inhibitors, ethylene oxide/polypropylene oxide block copolymers, and combinations thereof.