Results 21 to 30 of about 1,761 (214)

Mobility of charge carriers in mineral oil and ester fluids

High Voltage, 2021
New, more stringent environmental requirements for electrical insulation liquids have led to the development of novel, more environment‐friendly liquid dielectrics. Ester fluids, introduced several decades ago, provide a viable alternative to traditional
Qingjiang Xue, Igor Timoshkin, Mark P. Wilson, Martin Given, Scott J. MacGregor   +4 more
doaj   +1 more source

Simultaneous Production of Transformer Insulating Oil and Value-Added Glycerol Carbonates from Soybean Oil by Lipase-Catalyzed Transesterification in Dimethyl Carbonate

Energies, 2017
Fatty acid methyl esters (FAMEs), as a transformer insulating oil, and value-added glycerol derivatives were simultaneously synthesized from soybean oil by transesterification using Lipozyme 435 in dimethyl carbonate (DMC).
Keon Hee Kim, Eun Yeol Lee
doaj   +1 more source

Thermal behavior of a buoyancy-driven oil-immersed transformer and coolant performance assessment

Case Studies in Thermal Engineering
The dependable operation and effective thermal management of transformers are essential to power-system stability. To tackle this, a numerical model for the buoyancy-driven oil-immersed transformer cooling system is established, focusing on the heat ...
Qiang Gao, Zhe Zhang, Dong Liu
doaj   +1 more source

A study of correlation between the ect and ehd properties of different aged insulating oil mixtures that can Be an alternative to mineral oil for the insulation and cooling of power transformers

Heliyon, 2023
This article presents the hypothetical steps leading to the damage of power transformers in order to examine whether there is a correlation between the electrostatic properties (ECT) and the electro-hydrodynamic properties (EHD) of insulating oils ...
Jilani Rouabeh, Walid Nsibi, Lotfi M’barki, Sameh Khmeilia, Brahim Jallouli   +4 more
doaj   +1 more source

SIMULATION OF THERMAL DECOMPOSITION OF MINERAL INSULATING OIL

Brazilian Journal of Chemical Engineering, 2015
Dissolved gas analysis (DGA) has been applied for decades as the main predictive maintenance technique for diagnosing incipient faults in power transformers since the decomposition of the mineral insulating oil (MIO) produces gases that remain dissolved in the liquid phase.
Cruz, V. G. M., Costa, A. L. H., Paredes, M. L. L.   +2 more
openaire   +3 more sources

Hybrid Amyloid–Boron Nitride Aerogels for Lightweight Sound Insulation

Advanced Materials, EarlyView.
Amyloid fibrils template the mild formation of boron nitride–rich hybrid aerogels with hierarchical porosity, enhanced BN‐like ordering, and fibril‐reinforced mechanics. These ultralight materials combine thermal stability with strong sound absorption and transmission loss, offering a sustainable bio‐assisted route toward lightweight acoustic shields ...
Mohammad Peydayesh, Andrin Lustgarten, Stefan Schoenwald, Enrico Boschi, My Hanh Bui, Ali Miserez, Felix Donat, Christoph R. Müller, Raffaele Mezzenga   +8 more
wiley   +1 more source

Comparative analysis of multi-physical fields of vegetable and mineral insulating oil power transformer

Cogent Engineering
This article calculates and studies the oil flow distribution, temperature distribution and electric field distribution of vegetable and mineral Insulating oil in the low-voltage winding of the transformer with finite element method (FEM).
Suning Liang, Zhi Yang, Xianjun Shao, Lingfeng Jin, Qiang Wang, Zhengyong Huang   +5 more
doaj   +1 more source

Sustainable Poly(Lactic Acid)/Graphene Oxide Bioelectronic Platform for Neurotransmitters Sensing and Tunable Stimulation of Astrocytes

Advanced Materials, EarlyView.
This work introduces sustainable PLA/graphene oxide bioelectronic interfaces featuring electrodes with tunable conductivity and strong electrocatalytic performance. These platforms were used to implement a new method for tuning astrocyte Ca2+ signaling and for the efficient detection of key biomarkers.
Alessandra Scidà, Giulia Cazzador, Roberta Fabbri, Matteo Calosi, Alessandro Silvestri, Andrea Candini, Fabiola Liscio, Franco Corticelli, Aikaterini Konstantoulaki, Andrea D'Iorio, Marco Caprini, Vincenzo Palermo, Monica Bertoldo, Valentina Benfenati, Chiara Zanardi, Emanuele Treossi   +15 more
wiley   +1 more source

Electric field distribution characteristics of typical insulation structures in aramid–synthetic ester oil transformers [PDF]

AIP Advances
Both aramid paper and synthetic ester oil have high heat resistance levels. Using them as the main insulating materials for transformers is expected to improve the heat resistance level of oil-immersed transformers.
Meng Gao, Lei Peng, Ran Zhuo, Qiang Fu, Linjie Zhao   +4 more
doaj   +1 more source

Influence of Area and Volume Effect on Dielectric Behaviour of the Mineral Oil-Based Nanofluids

Energies, 2022
Transformer oil is conventionally used as an insulating liquid for the purpose of insulation and cooling in power transformers. The rise in the power demand has put stress on the existing insulation system used for power transmission.
Suhaib Ahmad Khan, Mohd Tariq, Asfar Ali Khan, Basem Alamri, Lucian Mihet-Popa   +4 more
doaj   +1 more source