US 12,198,831 B2 · Mixtures of supercritical fluids as a dielectric material

Abstract

A dielectric material with heat transfer properties includes a first fluid and a second fluid different from the first fluid and miscible with the first fluid. The first fluid and the second fluid are mixed with each other so as to form a mixture and are kept at a temperature and a pressure so that the mixture is maintained in a supercritical phase. The mixture has at least one parameter that is preferably different from a corresponding parameter in both a supercritical phase of the first fluid and a supercritical phase of the second fluid. In a method of insulating electrical contacts and removing heat therefrom, the mixture is disposed about the electrical contacts and is maintained at a temperature and at a pressure that causes the mixture to be in a supercritical phase so that the mixture has favorable dielectric and heat transfer properties.

Claims17

Dependent claims

A dielectric material with heat transfer properties, comprising:

(a) carbon dioxide;
and
(b) a second fluid selected from a list of fluids consisting of:
sulfur hexafluoride;
oxygen;
hydrogen;
trifluoroiodomethane;
perfluoropentanone;
perfluorohexanone;
perfluoronitrile;
hexafluoroethane;
tetrafluoromethane;
perfluoropropane;
octafluorocyclobutane;
ethane;
and combinations thereof, mixed therewith so as to form a mixture, the mixture kept at a temperature and a pressure so that the mixture is maintained in a supercritical phase, wherein the mixture is maintained in the supercritical phase while being in contact with at least two conductive surfaces so as to act as a dielectric that insulates the at least two conductive surfaces from each other.

13 more elements

Dependencies are inferred from the claim text.

Mixtures of supercritical fluids as a dielectric material

Life of this patent

Mixtures of supercritical fluids as a dielectric material

Life of this patent

Abstract

Claims17