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Halloysite Reinforced Natural Esters for Energy Applications

open access: yesLubricants, 2023
Recently, environmentally friendly and sustainable materials are being developed, searching for biocompatible and efficient materials which could be incorporated into diverse industries and fields.
Jose Jaime Taha-Tijerina   +3 more
doaj   +2 more sources

Lightning Impulse Withstand of Natural Ester Liquid

open access: yesEnergies, 2018
Due to the low biodegradability of mineral oil, intense research is conducted to define alternative liquids with comparable dielectric properties. Natural ester liquids are an alternative in focus; they are used increasingly as insulating liquid in ...
Stephanie Haegele   +4 more
doaj   +2 more sources

Influence of Molecule Structure on Lightning Impulse Breakdown of Ester Liquids

open access: yesEnergies, 2021
Ester liquids are environmentally friendly insulating oils, and they can be used as an alternative to mineral oil in transformers, even though in most countries spills of ester oils must be treated like spills of mineral oil.
Huaqiang Li   +5 more
doaj   +1 more source

Streaming Electrification of C60 Fullerene Doped Insulating Liquids for Power Transformers Applications

open access: yesEnergies, 2022
Long-term and fault-free operation of power transformers depends on the electrical strength of the insulation system and effective heat dissipation. Forced circulation of the insulating liquid is used to increase the cooling capacity.
Maciej Zdanowski
doaj   +1 more source

Phthalic Acid Esters: Natural Sources and Biological Activities [PDF]

open access: yesToxins, 2021
Phthalic acid esters (PAEs) are a class of lipophilic chemicals widely used as plasticizers and additives to improve various products’ mechanical extensibility and flexibility. At present, synthesized PAEs, which are considered to cause potential hazards to ecosystem functioning and public health, have been easily detected in the atmosphere, water ...
Ling Huang   +6 more
openaire   +3 more sources

Oxidation Stability of Natural Ester Modified by Means of Fullerene Nanoparticles

open access: yesEnergies, 2021
Increasing environmental demands influence the requirements for devices and materials used in the power industry. One example is a power transformer and an electro-insulating liquid used in it.
Dominika Szcześniak, Piotr Przybylek
doaj   +1 more source

Sustainable, Renewable and Environmental-Friendly Insulation Systems for High Voltages Applications

open access: yesMolecules, 2020
With the inception of high voltage (HV), requisites on the insulating permanence of HV equipment is becoming increasingly crucial. Mineral/synthetic oil liquid insulation—together with solid insulation materials (paper, pressboard)—is the fundamental ...
Muhammad Rafiq   +5 more
doaj   +1 more source

Influence of Nanoparticles on the Degradation Processes of Ester-Based Transformer Insulation Systems

open access: yesEnergies, 2022
The use of nanofluids as dielectric liquids for transformer insulation has been widely investigated during the last decade. A number of authors have performed extensive studies on liquids produced from different types of nanoparticles and base fluids ...
Daniel Pérez-Rosa   +2 more
doaj   +1 more source

Effects of Fiber and Copper Particles on Conductivity and Breakdown Characteristics of Natural Ester and Mineral Oil under DC Voltage

open access: yesEnergies, 2020
The converter transformer is a key equipment in high voltage direct current (HVDC) transmission system. Its oil-paper insulation system in the valve winding and outlet bushing experiences AC, DC, AC/DC, and transient impulse voltages simultaneously.
Lin Cheng   +6 more
doaj   +1 more source

Thermally Accelerated Aging of Insulation Paper for Transformers with Different Insulating Liquids

open access: yesEnergies, 2021
The article presents issues related to the aging behavior of oil-paper insulations in transformers using different oil- and ester-based insulating fluids.
Tobias Münster   +3 more
doaj   +1 more source

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