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US 2026/0015536 A1Published application
Method of cooling an electrical equipment system by using a dielectric fluid composition having good heat dissipation over a wide temperature range
AssigneeEvonik Operations GmbH
InventorsKristina Jovic, Roland Wilkens, Stefan Hilf
Life of this patent
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Abstract
A method of cooling an electrical equipment system by using a dielectric fluid composition containing a base fluid containing hydrogenated oligomers obtained from the oligomerization of butene. The method provides good and consistent heat dissipation of the electrical equipment system over a wide temperature range.
Claims15
A method, comprising:
- cooling an electrical equipment system by a dielectric fluid composition comprising a base fluid A) comprising hydrogenated oligomers obtained from oligomerization of butene, and wherein the base fluid A) comprises, based on a total weight of the base fluid A),
- a) from 50 to 78% by weight of hydrogenated branched isoparaffinic oligomers with an alkyl chain of 16 carbon atoms,
- b) from 22 to 50% by weight of hydrogenated branched isoparaffinic oligomers with an alkyl chain of 20 carbon atoms or with an alkyl chain of 24 carbon atoms or a mixture thereof,
- c) from 0 to 5% by weight of hydrogenated branched isoparaffinic oligomers with an alkyl chain of more than 28 carbon atoms,
- and wherein the hydrogenated branched isoparaffinic oligomers a), b) and c) of the base fluid A) have an iodine value of less than 3 g iodine/100 g of oligomer according to DIN 14111.
2 more elements
Dependencies are inferred from the claim text.