A study of the effect of copper and additives in hydrocarbon and ester based insulating liquids with isothermal microcalorimetry

Author

Tronstad, Ingvild ; Blekkan, Edd ; Ese, Marit-Hlen

Author_Institution

Dept. of Chem. Eng., Norwegian Univ. of Sci. & Technol. (NTNU), Trondheim, Norway

Volume

21

Issue

3

fYear

2014

fDate

Jun-14

Firstpage

1079

Lastpage

1088

Abstract

An isothermal microcalorimeter has been used to study the effect of solid copper in hexadecane, vegetable oil (ester) and mineral oil. The experiments have shown a catalytic effect of copper in oxidation of hydrocarbons and also the anti-oxidative effect of dibenzyl disulphide when combined with copper addition. The catalytic effect of copper is found in hydrocarbon as base oil and hexadecane, but not in experiments using inhibited oil and ester as the dielectric liquid.

Keywords

ageing; calorimetry; catalysis; copper; insulating oils; oxidation; vegetable oils; antioxidative effect; catalytic effect; copper; dielectric liquid; ester based insulating liquids; hydrocarbon based insulating liquids; isothermal microcalorimetry; mineral oil; vegetable oil; Copper; Heating; Liquids; Nitrogen; Oil insulation; Oxidation; Powders; Aging; calorimetry; catalysis; copper; dielectric liquids; oxidation stability;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2014.6832251

Filename

6832251