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US 10,501,670 B2Granted
Dielectric fluid and coolant made with biobased base oil
AssigneeNovvi LLC
InventorsHyeok Hahn, Jeffrey Brown, Paula Vettel, Jason R Wells
Life of this patent
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Abstract
A dielectric fluid and coolant for electrical apparatuses such as transformers. In one embodiment, the fluid contains more than 25% biobased base oil, such as a biobased hydrocarbon oil, which has a molecular weight greater than 300 g/mol and less than 595 g/mol. The biobased base oil may optionally be blended with other oils, such as mineral oils and vegetable oils.
Claims19
A dielectric fluid or coolant for electrical apparatuses comprising:
- a biobased hydrocarbon base oil having a molecular weight greater than 300 g/mol and less than 595 g/mol, the biobased hydrocarbon base oil comprising a co-oligomer of a partially hydrogenated conjugated hydrocarbon terpene with an alpha olefin, and having a renewable hydrocarbon content greater than 25%, as measured by ASTM-D6866-12 method, and
- a gassing tendency modifier comprising a mono-olefin.
A dielectric fluid or coolant for electrical apparatuses comprising:
- a biobased base oil having a molecular weight greater than 300 g/mol and less than 595 g/mol, comprising a co-oligomer of a partially hydrogenated conjugated hydrocarbon terpene with an alpha olefin, and with renewable hydrocarbon content greater than 25%, as measured by ASTM-D6866-12 method;
- and a gassing tendency modifier in an amount ranging from about 50 ppm to about 50 wt %, and wherein the dielectric fluid or coolant possess the following properties:
- (a) specific heat greater than 2.3 J/g ° K at 60° C.;
- (b) thermal conductivity greater than 0.142 W/m ° K at 50° C.;
- and
- (c) an oxidative stability greater than 500 minutes as measured by ASTM-D2112-01a method.
3 more elements
Dependencies are inferred from the claim text.