Results 101 to 110 of about 1,368,932 (431)

Sono‐Piezo‐Photosynthesis of Ethylene and Acetylene from Bioethanol under Ambient Conditions

Advanced Functional Materials, EarlyView.
A novel sono‐piezo‐photocatalytic strategy enables the conversion of bioethanol to ethylene (C2H4) and acetylene (C2H2) under ambient conditions, addressing the limitations of conventional methods that are high‐temperature and energy‐intensive. By using an advanced graphene oxide/sodium bismuth titanate heterostructure catalyst, this work achieved ...
Yue Jiang, Jiajun Zhang, Hongyang Ma, Shujie Zhou, Hsun‐Yen Lin, Sajjad S. Mofarah, Mark Lockrey, Teng Lu, Hangjuan Ren, Xiaoran Zheng, Maichael Gunawan, Suchen Huang, Yu‐Chun Huang, Fenglin Zhuo, Dali Ji, Judy N. Hart, Yun Liu, Jyh Ming Wu, Muthupandian Ashokkumar, Danyang Wang, Pramod Koshy, Charles C. Sorrell   +21 more
wiley   +1 more source

Application Areas of Ionic Hydraulic Fluids

Chemical Engineering &Technology, Volume 46, Issue 1, Page 14-20, January 2023., 2023
Ionic liquids as high‐tech technical fluids have also made their way into the field of hydraulic drives. With excellent lubricating properties, a wide temperature range, low pour point and vapor pressure, as well as nonflammability and environmental suitability, problems with only one type of fluid, namely, an ionic hydraulic fluid, instead of using ...
Darko Lovrec, Roland Kalb, Vito Tič
wiley   +1 more source

On the turbulent flow models in modelling of omni-flow wind turbine [PDF]

, 2014
Yong Chen, Pei Ying, Yigeng Xu, Yuan Tian, 'On the turbulent flow models in modelling of omni-flow wind turbine', paper presented at The International Conference on Next Generation Wind Energy (ICNGWE2014), the Universidad Europa de Madrid, Madrid, Spain,
Chen, Yong, Tian, Yuan, Xu, Yigeng, Ying, Pei   +3 more
core  

Modeling and control of a variable speed variable pitch angle prototype wind turbine [PDF]

, 2013
This paper focuses on modeling, control and simulation of a 500 KW horizontal axis prototype wind turbine that is being developed in the context of the MILRES (National Wind Energy Systems) Project in Turkey. The prototype turbine is designed as variable
Aksit, Mahmut Faruk, Akşit, Mahmut Faruk, Evren, Sanem, Unel, Mustafa, Ünel, Mustafa   +4 more
core   +2 more sources

Modelling yawed wind turbine wakes: a lifting line approach

Journal of Fluid Mechanics, 2018
Yawing wind turbines has emerged as an appealing method for wake deflection. However, the associated flow properties, including the magnitude of the transverse velocity associated with yawed turbines, are not fully understood.
C. Shapiro, D. Gayme, C. Meneveau
semanticscholar   +1 more source

Wind turbine gearbox technologies [PDF]

2010 1st International Nuclear & Renewable Energy Conference (INREC), 2010
The reliability problems associated with transmission or gearbox equipped wind turbines and the existing solutions of using direct drive gearless turbines and torque-splitting, are reviewed. As alternative solutions we propose the Geared Turbofan Engine (GTF) technology, and magnetically-levitated bearings from the aerospace industry, and the ...
Adam M. Ragheb, Magdi Ragheb
openaire   +3 more sources

Gd‐Induced Oxygen Vacancy Creation Activates Lattice Oxygen Oxidation for Water Electrolysis

Advanced Functional Materials, EarlyView.
DFT calculations shows that Gd incorporation into Fe‐doped NiO raises the O 2p band center, lowers oxygen vacancy formation energy, and thus promotes the LOM mechanism for OER. Gd and Fe co‐doped NiO nanosheets synthesized via spray combustion exhibits a low overpotential of 227 mV and maintains stable AEMWE performance for over 120 h, demonstrating ...
Yong Wang, Yadong Liu, Sijia Liu, Yunpu Qin, Jianfang Liu, Xue Jia, Qiuling Jiang, Xuan Wang, Yongzhi Zhao, Luan Liu, Hongru Liu, Hong Zhao, Yirui Jiang, Dong Liang, Haoyang Wu, Baorui Jia, Xuanhui Qu, Hao Li, Mingli Qin   +18 more
wiley   +1 more source

A Directional Monitoring Approach of Sequential Incomplete Wind Power Curves with Copula-based Variational Inference [PDF]

arXiv, 2023
Wind turbines often work under complex conditions which result in performance degradation. Accurate performance degradation monitoring is essential to ensure the reliable operation of wind turbines and reduce the maintenance costs. Wind turbine power curve monitoring is an effective way to detect performance degradation.
arxiv  

Analytical solution for the cumulative wake of wind turbines in wind farms [PDF]

, 2020
This paper solves an approximate form of conservation of mass and momentum for a turbine in a wind farm array. The solution is a fairly simple explicit relationship that predicts the streamwise velocity distribution within a wind farm with an arbitrary layout.
arxiv   +1 more source

A Review and Methodology Development for Remaining Useful Life Prediction of Offshore Fixed and Floating Wind turbine Power Converter with Digital Twin Technology Perspective

2018 2nd International Conference on Green Energy and Applications (ICGEA), 2018
The growing number of Offshore wind farms demands highly reliable wind turbines to curtail the maintenance cost and to shorten the downtime. Power converter is one of the critical components that undergoes high rate of medium and short term thermal ...
K. Sivalingam, M. Sepulveda, M. Spring, P. Davies   +3 more
semanticscholar   +1 more source