Results 41 to 50 of about 31,807 (169)

Electro-Thermal Modeling and Thermal Analysis of High-Inertia Synchronous Condenser Converters

open access: yesElectricity
High-inertia energy storage synchronous condenser (HI-ES-SC) is operated through rotor-excited variable-speed mechanisms to provide grid power support. Power devices are exposed to alternating electro-thermal stresses, with significant implications for ...
Jinxin Ouyang   +3 more
doaj   +1 more source

Studying the Effect of Deposition Conditions on the Performance and Reliability of MEMS Gas Sensors

open access: yesSensors, 2007
In this paper, the reliability of a micro-electro-mechanical system (MEMS)-based gas sensor has been investigated using Three Dimensional (3D) coupled multiphysics Finite Element (FE) analysis.
Walied Moussa, Khaled Sadek
doaj   +1 more source

Evaluating the Role of Entropy Change in Lithium-Ion Battery Electro-Thermal Modelling

open access: yesBatteries
The accurate estimation of lithium-ion cell internal temperature is crucial for the safe operation of battery packs, especially during high discharge rates, as operating outside the safe temperature range can lead to accelerated degradation or ...
Félix-Antoine LeBel   +3 more
doaj   +1 more source

Preheating Modeling of Forming Region and Design of Electrode Structure During Integral Electric Hot Incremental Forming

open access: yesNanomaterials
Recently, integral electric hot incremental forming technology has been proposed to form hard-to-form sheet metals and to eliminate some defects obtained through the local heating method via current, such as inhomogeneous temperature distribution, arc ...
Zhengfang Li   +5 more
doaj   +1 more source

Effects of Nanoparticles Materials on Heat Transfer in Electro-Insulating Liquids

open access: yesApplied 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

Numerical Analysis of the Temperature Field in Luminaires

open access: yesActa Polytechnica, 2004
This paper contains a calculation of the thermal field caused by electro-heat in lighting devices. After specifying the heat sources, a thermal analysis is make using the finite element method and the equivalent thermal scheme method.
J. Murín, M. Kropáč, R. Fric
doaj  

Optimized tissue heating by adopting high frequency electrotherapy

open access: yesDigital Communications and Networks, 2015
We have developed an electronics circuit that generates a high voltage with a frequency of 0.3–2 MHz to build an electro therapy system that can optimize tissue heating characteristics. These characteristics are used in medical applications.
Jae-cheol Lee   +3 more
doaj   +1 more source

PCB-level Electro thermal Coupling Simulation Analysis

open access: yesJournal of Physics: Conference Series, 2017
Power transmission network needs to transmit more current with the increase of the power density. The problem of temperature rise and the reliability is becoming more and more serious. In order to accurately design the power supply system, we must consider the influence of the power supply system including Joule heat, air convection and other factors ...
Runjing Zhou, Xuchen Shao
openaire   +1 more source

Thermal energy storage with desalination salt: lab-scale experiments and simulations

open access: yesFrontiers in Energy Research
This work investigates desalination salt thermal energy storage (TES) using a benchtop air-to-salt module and a complementary CFD study of an electro-thermal concept with embedded electrical heaters.
Matthew Zazkowski   +8 more
doaj   +1 more source

Computational Analysis of Responses of Micro Electro-Thermal Actuators

open access: yesVolume 11: Micro and Nano Systems, Parts A and B, 2007
The electrical, thermal, and mechanical responses of surface micromachined (SMM) 2-beam actuators have been simulated using the Calagio code, a coupled physics analysis tool. The present analysis, unlike previous analyses, includes the surrounding air in the computational domain so that heat losses from the beams onto the silicon substrate will be ...
C. Channy Wong, Leslie M. Phinney
openaire   +2 more sources

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