Results 21 to 30 of about 2,447,201 (267)

Current Advances in Ejector Modeling, Experimentation and Applications for Refrigeration and Heat Pumps. Part 1: Single-Phase Ejectors

Inventions, 2019
Ejectors used in refrigeration systems as entrainment and compression components or expanders, alone or in combination with other equipment devices, have gained renewed interest from the scientific community as a means of low temperature heat recovery ...
Zine Aidoun, Khaled Ameur, Mehdi Falsafioon, Messaoud Badache   +3 more
doaj   +1 more source

Perspective of Voltage-Fed Single-Phase Multilevel DC-AC Inverters

Energies, 2023
Standing out for their remarkable benefits, such as lower voltage stress on integrated semiconductor devices, reduction in total harmonic distortion, as well as lower electromagnetic effects, multilevel inverters (MLIs) increase their share in the field ...
Jenn-Jong Shieh, Kuo-Ing Hwu, Sheng-Ju Chen   +2 more
doaj   +1 more source

Efficiency Improvement of an Electric-Grid Transformer Using the Diamagnetism Characteristics of a Bulk Superconductor

Energies, 2022
An innovative method to improve the efficiency of a single-phase electric-grid 125 kVA, 50 Hz shell type and distribution transformer is presented. The diamagnetism characteristic of a bulk high-temperature superconductor (HTS), designed in a specific ...
Daniel Shaked, Eldad Holdengreber
doaj   +1 more source

Analysis of a Stator-Rotor-Stator Spinning Disk Reactor in Single-Phase and Two-Phase Boiling Conditions Using a Thermo-Fluid Flow Network and CFD

Fluids, 2022
Cryogenic liquid propellants are used in liquid rocket engines to obtain high specific impulse. The flow rates are controlled by turbopumps that deliver liquid propellant to the engine at high pressure levels.
Lorenzo Mazzei, Francesco Maria Marin, Cosimo Bianchini, Riccardo Da Soghe, Cristina Bertani, Dario Pastrone, Maddalena Angelucci, Giuseppe Caggiano, Michiel de Beer   +8 more
doaj   +1 more source

The effect of inclined radial flow in proton exchange membrane fuel cells performance [PDF]

Hydrogen, Fuel Cell & Energy Storage, 2014
Computational fluid dynamics analysis was employed to investigate the radial flow field patterns of proton exchange membrane fuel cells (PEMFC) with different channel geometries at high operating current densities. 3D, non-isothermal was used with single
Ashkan torkavannejad, Farzin Ramin, Sima Baheri   +2 more
doaj   +1 more source

Single-phase Boost-type Active Tracking AC-AC Voltage Regulator with an Improved Hybrid Control Technique

Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2022
This paper presents a switch-mode single-phase boost-type AC-AC voltage regulator. The topology of the regulator needs only reduced numbers of components. Unlike the similar studies in the literature, a new hybrid control technique with a closed-loop PID
Felix Hımmelstoss, Faruk Yalçın
doaj   +1 more source

Analytical Model of Quantitative Texture Prediction Considering Heat Transfer Based on Single-Phase Material in Laser Powder Bed Fusion

Journal of Manufacturing and Materials Processing
Laser powder bed fusion (LPBF) is widely used in metal additive manufacturing to create geometrically complex parts, where heat transfer and its affected temperature distribution significantly influence the parts’ materials’ microstructure and the ...
Wei Huang, Wenjia Wang, Jinqiang Ning, Hamid Garmestani, Steven Y. Liang   +4 more
doaj   +1 more source

Field-circuit analysis and measurements of a single-phase self-excited induction generator

Open Physics, 2017
The paper deals with a single-phase induction machine operating as a stand-alone self-excited single-phase induction generator for generation of electrical energy from renewable energy sources.
Makowski Krzysztof, Leicht Aleksander
doaj   +1 more source

Floating Capacitor Integrated DAB for Single-Phase, Single-Stage PFC in Wireless Battery Charging Application

IEEE Open Journal of Power Electronics, 2023
In this article, a novel active power decoupling topology called Floating Capacitor Integrated Dual Active Bridge (FCI-DAB) for single-phase, single-stage AC-DC solutions is introduced.
Itziar Alzuguren, Asier Garcia-Bediaga, Ander Avila, Alejandro Rujas, Miroslav Vasic   +4 more
doaj   +1 more source

Synthesis of Single-Phase Zeolite A by Coal Gasification Fine Slag from Ningdong and Its Application as a High-Efficiency Adsorbent for Cu²⁺ and Pb²⁺ in Simulated Waste Water

ChemEngineering, 2020
Coal gasification is a new direction for the clean utilization of coal, but it also brings huge environmental pressure on solid waste. In this paper, the high-crystallinity single-phase zeolite A was prepared by solid-phase alkali fusion synthesis from ...
Wenxin Ji, Ning Feng, Pengde Zhao, Shiyue Zhang, Shasha Zhang, Liping Lan, Honglan Huang, Kangning Li, Yonggang Sun, Yuanyuan Li, Yulong Ma   +10 more
doaj   +1 more source