Results 11 to 20 of about 469,970 (301)
A Comparative Study of Physicochemical, Dielectric and Thermal Properties of Pressboard Insulation Impregnated with Natural Ester and Mineral Oil [PDF]
IEEE Transactions on Dielectrics and Electrical Insulation, 2011 Natural ester is considered to be a substitute of mineral oil in the future. To apply natural ester in large transformers safely, natural ester impregnated solid insulation should be proved to have comparable dielectric strength and thermal stability to ...
Chen, George +4 more
core +2 more sources
IET Nanodielectrics, 2020 The development of reliable, environmentally safe and economic insulating oil for the transformer is an endless effort of the electrical industry.
Joyce Jacob +2 more
doaj +3 more sources
Alexandria Engineering Journal, 2020 This article deals with the study the negative lightning impulse breakdown voltage (LI-BDV) of MIDEL 1204 natural and MIDEL 7131 synthetic ester liquids when adding small amounts of specific nanoparticles (NPs); the considered NPs being magnetic (Fe3O4 ...
Usama Khaled, Abderrahmane Beroual
doaj +3 more sources
Difference Analysis of Gas Molecules Diffusion Behavior in Natural Ester and Mineral Oil Based on Molecular Dynamic Simulation. [PDF]
Molecules, 2019 Ye W +5 more
europepmc +2 more sources
Transformers Improvement and Environment Conservation by Using Synthetic Esters in Egypt
Energies, 2021 Distribution transformer (DT) is a crucial component in power systems as it exchanges energies between different voltage levels or between utility grid and DC microgrids.
Ali A. Radwan +5 more
doaj +1 more source
Naturally Occurring Cinnamic Acid Sugar Ester Derivatives [PDF]
Molecules, 2016 Cinnamic acid sugar ester derivatives (CASEDs) are a class of natural product with one or several phenylacrylic moieties linked with the non-anomeric carbon of a glycosyl skeleton part through ester bonds. Their notable anti-depressant and brains protective activities have made them a topic of great interest over the past several decades. In particular
Yuxin Tian +11 more
openaire +3 more sources
Fire resistance test of transformers filled with natural ester insulating liquid
The Journal of Engineering, 2018 Natural ester fluids, as a renewable, biodegradable liquid dielectric, its flash point is above 300°C, and the burning point exceeds 330°C, high flash point liquids known as ‘less flammable’ liquids.
Shengwei Cai +5 more
doaj +1 more source
Energies, 2018 The paper is focused on the possibility of replacing petroleum-based oils used as electro-insulating fluids in high voltage machinery. Based on ten years of study the candidate base oil for the central European region is rapeseed (Brassica napus) oil ...
Vaclav Mentlik +3 more
doaj +1 more source
Fuels from Natural Fatty Acid Esters
Chemical Engineering Transactions, 2018 Fuel production from different alternative sources becomes more and more important. One of the sustainable solutions is its production from waste lards (what are proven renewable sources) via different catalytic processes. During our experimental work we studied the catalytic transformation possibilities of (partially) pre-treated waste lard (product ...
Varga Geza +3 more
openaire +2 more sources
Effects of Nanoparticles Materials on Heat Transfer in Electro-Insulating Liquids
Applied Sciences, 2018 This paper discusses the effect of doping of electro-insulating liquids with nanoparticle materials on the thermal properties of the obtained nanoliquids and heat transport in the transformer.
Grzegorz Dombek +2 more
doaj +1 more source