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Modified natural ester — prospective electrical insulating liquid
2017 IEEE 19th International Conference on Dielectric Liquids (ICDL), 2017Natural oils are divided into vegetable and mineral oils. Compared with vegetable oils, the mineral oils show better dielectric properties, however, they can be dangerous for the living environment and their flammability is higher. The vegetable oils are composed of natural ester molecules with a triacylglycerol structure.
Jiri Ulrych +2 more
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Natural ester fluid: The transformer design perspective
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA), 2010This paper presents the perspective of employ natural ester fluid to high voltage and high power transformers. Some studies that have been done in the literature about the dielectric characteristics of natural ester fluid point to some differences, mainly in streamer propagation and long gap distance tests, when compared to mineral oil. However, all of
T. B. Marchesan, A. J. Fanchin
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Long gap breakdown of natural ester fluid
2010 International Conference on High Voltage Engineering and Application, 2010Dielectric breakdown values were measured in 50– 150 mm gaps in natural ester fluid and mineral oil. The tests included 50/60 Hz and 1.2×50 µs lightning impulse using negative and positive polarities. The voltage levels attained by natural ester fluid compare closely with mineral oil and would support the use of natural ester fluid in transformers ...
Kevin J. Rapp +4 more
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Natural Fiber–Reinforced Vinyl Ester Composites
2023Le Duong Hung Anh, Pásztory Zoltán
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Distribution Utility Experience with Natural Ester Coolants
2005/2006 PES TD, 2006Natural ester seed oil is a biodegradable fluid that is increasingly being used as a replacement for mineral oil and for high temperature flashpoint liquids, including silicone and R ...
J.R. Murphy, R. Weber
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GAS CHROMATOGRAPHIC FRACTIONATION OF NATURAL STERYL ESTER MIXTURES
Canadian Journal of Biochemistry, 1964Synthetic and naturally occurring mixtures of fatty acid esters of cholesterol and plant sterols were separated by gas chromatography under the conditions previously described for triglyceride fractionation. The separations obtained were based primarily on the molecular weight or carbon number of the material, a difference of one methylene unit either ...
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Improving Transformer Safety with Natural Ester Fluids
Abu Dhabi International Petroleum Conference and Exhibition, 2012Abstract For over one hundred years, petroleum based mineral oil has been used in liquid filled transformers. Today, over a million tons of transformer oils are annually purchased worldwide. The popularity of mineral transformer oil has mainly been built on its availability and low cost.
Roberto Asano +2 more
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Antioxidant variations in the nature ester oil
2017 18th International Scientific Conference on Electric Power Engineering (EPE), 2017The insulating liquids for power transformers are still evolving area. The current trend is to move away from currently used mineral oil because it poses a threat to the environment and use the renewable, biodegradable nature ester oils instead. These oils are now well known but what keeps them from widespread usage are unbalanced properties.
Pavel Totzauer +4 more
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Natural flavor ester synthesis catalyzed by lipases
Flavour and Fragrance Journal, 2019AbstractIn spite of the fact that several flavors and fragrances are obtained either by chemical synthesis or by extraction from plants, the application of biocatalysis for the sake of a safe and productive pathway by more sustainable chemical processes is the main alternative.
Bayout I +6 more
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High performance ester lubricants from natural oils
Industrial Lubrication and Tribology, 2002Lubricants impact on the environment at all stages of production, usage and disposal. The awareness and concern over the usage of petroleum‐based products and their impact on the environment have created an opportunity to produce environmentally acceptable lubricants from agricultural feedstocks.
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