Results 21 to 30 of about 9,017,946 (303)

Research status of replacement gases for SF6 in power industry

AIP Advances, 2020
SF6 is widely used in the industrial field due to its stable structure and excellent properties. It is mainly used in electrical insulation equipment. Due to the boiling point of SF6, its use in extremely cold regions has been limited.
Shuangshuang Tian, Xiaoxing Zhang, Yann Cressault, Juntai Hu, Bo Wang, Song Xiao, Yi Li, Narjisse Kabbaj   +7 more
doaj   +1 more source

Quantum coherence in photosynthesis for efficient solar-energy conversion [PDF]

Nature Physics, 2014
The crucial step in the conversion of solar to chemical energy in Photosynthesis takes place in the reaction center where the absorbed excitation energy is converted into a stable charge separated state by ultrafast electron transfer events. However, the fundamental mechanism responsible for the near unity quantum efficiency of this process is unknown.
Elisabet Romero, Ramunas Augulis, Vladimir I. Novoderezhkin, Marco Ferretti, Jos Thieme, Donatas Zigmantas, Rienk van Grondelle   +6 more
openaire   +3 more sources

Effect of the pitch angle and of the number of blades on depression created under impellers

MATEC Web of Conferences, 2017
This work presents a set of experiments concerning the behavior of several types of impellers regarding the depression formatted and operating in a specific range of rotations.
Băbuţanu Corina, Mândrea Lucian
doaj   +1 more source

A Marginal Contribution Theory-Based Energy Efficiency Contribution Analysis for Integrated Energy System

Frontiers in Energy Research, 2021
The energy efficiency analysis is a prerequisite for the construction of the integrated energy system (IES). In this study, a novel energy efficiency analysis method is proposed considering different energy subsystems in the IES.
Shihai Yang, Shihai Yang, Shihai Yang, Mingming Chen, Mingming Chen, Qiang Zuo, Qiang Zuo   +6 more
doaj   +1 more source

Silver/Polypyrrole-Functionalized Polyurethane Foam Embedded Phase Change Materials for Thermal Energy Harvesting

Nanomaterials, 2021
Conversion of solar energy into thermal energy stored in phase change materials (PCMs) can effectively relieve the energy dilemma and improve energy utilization efficiency.
Dongli Fan, Yuan Meng, Yuzhuo Jiang, Siyi Qian, Jie Liu, Yuzhi Xu, Dangsheng Xiong, Yufeng Cao   +7 more
doaj   +1 more source

Can conversion of CO2 into fuels via electrochemical or thermochemical reduction be energy efficient and reduce emissions?

, 2022
Electrochemical and thermochemical conversion of CO2 into fuels are significant carbon conversion technologies to mitigate carbon emissions. Based on the captured CO2, many previous studies carried out tech-economic and environmental analyses for the CO ...
Yang, Dongtai, Li, Sheng, Zheng, Yawen, He, Song   +3 more
core   +1 more source

Energy Efficiency Board 2020 programs and operations report.

, 2021
Annual; Began with 2010; ceased with 2011.; At head of title: Connecticut Energy Efficiency ...
Connecticut. Energy Efficiency Board.
core   +1 more source

A Watt-Level, High-Quality LG_0,±1 Vortex Beam made from a Nd:YVO₄ Laser Pumped by an Annular Beam

Photonics
In this work, we demonstrate a Watt-level, high-quality Laguerre–Gaussian (LG) LG0±1 vortex mode directly output from an end-pumped Nd:YVO4 laser by using an axicon-based annular pump beam.
Minghao Guo, Xin Tao, Yueqing Li, Shirui Zhang, Zhenkun Wu, Yuzong Gu, Peng Li   +6 more
doaj   +1 more source

Synthesis of devices for efficient energy conversion

Journal of Physics: Conference Series, 2021
Abstract The synthesis of devices for efficient energy conversion is shown. It is shown that simple aggregation as the most obvious way to obtain three-phase converters based on single-phase circuit solutions can lead to disadvantages during their operation.
S V Myatezh, N I Shchurov, B V Malozyomov, A A Shtang, L Sh Atabaeva   +4 more
openaire   +1 more source

Flexibility provision by virtual power line and soft open point in AC/DC distribution systems

International Journal of Electrical Power & Energy Systems
The increasing penetration of photovoltaic generation will significantly challenge the voltage quality, power flow, power losses in active distribution networks.
Xiaodong Yang, Wentao Jiang, Jing Ma, Da Xu, Chengjia Zhang, Yue Yang, Zhicheng Xu   +6 more
doaj   +1 more source