Results 21 to 30 of about 880,259 (204)

Influence of the Preformed Coil Design on the Thermal Behavior of Electric Traction Machines

open access: yesEnergies, 2021
Preformed coils are used in electrical machines to improve the copper slot fill factor. A higher utilization of the machine can be realized. The improvement is a result of both, low copper losses due to the increased slot fill factor and an improved heat
Benedikt Groschup   +2 more
doaj   +1 more source

Use of Alternative Fluids in Very High-Power Transformers: Experimental and Numerical Thermal Studies

open access: yesIEEE Access, 2020
The very high-power transformer lifespan depends mainly on the temperature that cellulose insulation reaches during its operation. Traditionally, its cooling has been carried out using mineral oil as coolant. Nowadays, alternative ester-based liquids are
Ramazan Altay   +6 more
doaj   +1 more source

Comparing Thermal Regime Stages along a Small Yakutian Fluvial Valley with Point Scale Measurements, Thermal Modeling, and Near Surface Geophysics

open access: yesRemote Sensing, 2023
Arctic regions are highly impacted by the global temperature rising and its consequences and influences on the thermo-hydro processes and their feedbacks.
Emmanuel Léger   +13 more
doaj   +1 more source

Unsteady heat exchange at the dry spent nuclear fuel storage

open access: yesNuclear Engineering and Technology, 2017
Unsteady thermal processes in storage containers with spent nuclear fuel were modeled. The daily fluctuations of outer ambient temperatures were taken into account.
Svitlana Alyokhina, Andrii Kostikov
doaj   +1 more source

When self-consistency makes a difference [PDF]

open access: yes, 2008
Compound semiconductor power RF and microwave device modeling requires, in many cases, the use of selfconsistent electrothermal equivalent circuits.
Bonani, Fabrizio   +5 more
core   +1 more source

A Multi-Agent Reinforcement Learning Framework for Lithium-ion Battery Scheduling Problems

open access: yesEnergies, 2020
This paper presents a reinforcement learning framework for solving battery scheduling problems in order to extend the lifetime of batteries used in electrical vehicles (EVs), cellular phones, and embedded systems. Battery pack lifetime has often been the
Yu Sui, Shiming Song
doaj   +1 more source

A Detailed Review Investigating the Mathematical Modeling of Solar Stills

open access: yesFrontiers in Energy Research, 2022
In recent years providing potable water for humans has become a major problem, especially in rural and remote regions. In the last few decades, methods of providing potable water using solar radiation have proved that there are methods without negative ...
Ahmadreza Ayoobi, Mahdi Ramezanizadeh
doaj   +1 more source

Thermal Model and Countermeasures for Future Smart Glasses

open access: yesSensors, 2020
The market for wearable devices such as smart watches and smart glasses continues to grow rapidly. Smart glasses are attracting particular attention because they offer convenient features such as hands-free augmented reality (AR).
Kodai Matsuhashi   +2 more
doaj   +1 more source

Is There a Speed Limit for the Thermal Steady‐State Assumption in Continental Rifts?

open access: yesGeochemistry, Geophysics, Geosystems, 2021
The lithosphere is often assumed to reside in a thermal steady‐state when quantitatively describing the temperature distribution in continental interiors and sedimentary basins, but also at active plate boundaries.
Esther L. Heckenbach   +3 more
doaj   +1 more source

Dependency of Machine Efficiency on the Thermal Behavior of Induction Machines

open access: yesMachines, 2020
The consideration of the thermal behavior of electric machines is becoming increasingly important in the machine design for electric vehicles due to the adaptation to more dynamic operating points compared to stationary applications.
Svenja Kalt   +5 more
doaj   +1 more source

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