Results 91 to 100 of about 6,822 (262)

CFD ANALYSIS FOR HYDRAULIC FLOW RATE CONTROL DEVICE

Journal of Industrial Design and Engineering Graphics, 2016
The hydraulic drive systems are currently used on most construction and agricultural machines, but also for stationary industrial hydraulic applications.
ȘCHEAUA Fănel
doaj   +4 more sources

Modeling and experimental validation of bolt–grout bond–slip behavior for deep underground excavation support

Deep Underground Science and Engineering, EarlyView.
A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian, Xiaohui He, Kexue Wang, Yufei Wu, Guoxin Wang, Shaochen Zhang, Jun Yang   +6 more
wiley   +1 more source

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

Deep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

High‐Performance Solar‐Thermal Hydrogel Based on Waste Biomass Materials for Power Generation and Water Purification

EcoEnergy, EarlyView.
An environmentally friendly and highly efficient solar evaporator was constructed using waste biomass materials and polyvinyl alcohol carrier, which achieves an outstanding evaporation rate of 1.48 kg m−2 h−1, corresponding to an energy conversion efficiency of 82.49% under 1.0 kW m−2 simulated sunlight irradiation.
Shuo Qi, Haiying Tian, Lu Han, Tianjiao Li, Zuoyu Wang, Pengfei Li, Yingyuan Zhang, Tao Jia, Xiuhua Zhao, Wai‐Yeung Wong, Nanxi Jin   +10 more
wiley   +1 more source

MATHEMATICAL MODEL OF SUBDIVIDED HYDRAULIC CIRCUITS

Advanced Engineering Research, 2010
The mathematical model of subdivided hydraulic circuits that permits calculation of the fluid distribution in all points is considered.
Valery S. KRUTIKOV, Konstantin A. LIKHODED, Nikolay V. DIVULIN   +2 more
openaire   +2 more sources

Rechargeable Self‐Powered Flexible Pressure Sensors With Adjustable Sensitivity Based on Quasi‐Solid‐State Zinc‐Ion Batteries

EcoEnergy, EarlyView.
his paper presents a self‐powered, rechargeable quasi‐solid‐state zinc‐ion battery‐based flexible pressure sensor with adjustable sensitivity, excellent performance and broad application prospects. ABSTRACT Flexible pressure sensors hold broad application prospects in electronic skin, human–machine interaction, and health monitoring.
Qianqian Yao, Liangxian Wang, Ziqi Ren, Jianyu Yin, Qixiang Zhang, Mingfang Deng, Nishuang Liu, Yihua Gao   +7 more
wiley   +1 more source

Geodiversity is an inseparable but underutilized aspect of ecological connectivity assessments under climate change

Ecography, EarlyView.
Conservation has shifted towards a climate change adaptation approach in which expected species range shifts are increasingly considered to mitigate effects of climate change and habitat fragmentation on biodiversity. As part of this, ecological connectivity needs to be ensured to support gene flow and viable populations in the face of changing ...
Aino‐Maija Määttänen, Maria Hällfors, Julia Kemppinen   +2 more
wiley   +1 more source

Membrane Engineering for Battery Systems: Bridging Design Principles and Frontier Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The review emphasizes membrane separators' role in battery performance and safety, covering redox flow, lithium‐ion, and solid‐state batteries. It reviews advances in membrane materials (e.g., polymer electrolytes, hybrid composites) and ion transport mechanisms, while addressing challenges like dendrite growth and crossover losses.
Xiaoqun Zhou, Justice Delali Akoto, Rui Tan, Jun Ma   +3 more
wiley   +1 more source

Defect Engineering and Effect of Vacancy Concentration on the Electrochemical Performance of V‐Based MXenes

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Using a top‐down defect engineering approach, controllable vacancy concentrations are introduced into V‐based MXenes by rationally designing the precursor MAX phase, aiming to investigate the effect of vacancy concentration on the electrochemical performance.
Leiqiang Qin, Rutuparna Samal, Jianxia Jiang, Joseph Halim, Ningjun Chen, Florian Chabanais, Per O. A. Persson, Johanna Rosen   +7 more
wiley   +1 more source

Optimization of Energy Efficiency in Photovoltaic Water Pumping Systems Using Neural Networks

Energy Science &Engineering, EarlyView.
This study investigates an optimal control strategy for a photovoltaic (PV) water pumping system aimed at improving efficiency and autonomy in off‐grid applications. The system uses an induction motor with direct torque control and compares three maximum power point tracking (MPPT) techniques: neural network–based MPPT, Incremental Conductance (IC ...
Sihem Ghoudelbourk, Habib Benbouhenni, Z. M. S. Elbarbary, Mohamed Benidir   +3 more
wiley   +1 more source