Results 31 to 40 of about 11,230,899 (364)

A Review on the Rural Household Energy in China From 1990s—Transition, Regional Heterogeneity, Emissions, Energy-Saving, and Policy

open access: yesFrontiers in Energy Research, 2022
Rural energy is related to the domestic energy supply, consumption, and improvement of living standards of more than one-third of the population in China.
Xinxin Zhang   +6 more
doaj   +1 more source

Nonlinear Dynamic Characteristics of Rod Fastening Rotor with Preload Relaxation

open access: yesEnergies, 2022
Compared to ordinary rotor, rod fastening rotor has the advantages of lighter weight, higher strength and easier installation, so it is widely used in gas turbine.
Li Zhao   +3 more
doaj   +1 more source

Experimental Study on Heat Loss of a Single Screw Expander for an Organic Rankine Cycle System

open access: yesFrontiers in Energy Research, 2020
For displacement expanders, the irreversible losses include leakage, friction, heat dissipation, and flow resistance. Currently, the research on the heat loss of expanders is scarce, especially with regards to experimental studies.
Wei Wang   +9 more
doaj   +1 more source

Energy-Saving Strategies of Axial Flow Fans for Direct Dry Cooling System

open access: yesEnergies, 2021
The operating conditions of axial flow fans are closely related to the thermo-flow characteristics of the mechanical draft direct dry cooling system. Moreover, the uneven distribution of cooling air driven by axial flow fans may lead to the deterioration
Wenhui Huang   +3 more
doaj   +1 more source

Two-Dimensional Simulation of Mass Transfer in Unitized Regenerative Fuel Cells under Operation Mode Switching

open access: yesEnergies, 2016
A two-dimensional, single-phase, isothermal, multicomponent, transient model is built to investigate the transport phenomena in unitized regenerative fuel cells (URFCs) under the condition of switching from the fuel cell (FC) mode to the water ...
Lulu Wang   +3 more
doaj   +1 more source

Quantum dots for Förster Resonance Energy Transfer (FRET)

open access: yes, 2020
The analysis of biomolecular interactions using quantum dots (QDs) as both FRET donors and acceptors has become an established technique in the life sciences.
Marcelina Cardoso Dos Santos   +3 more
semanticscholar   +1 more source

Compound Fault Feature Extraction of Wind Power Gearbox Based on DRS and Improved Autogram

open access: yesZhongguo dianli, 2023
Compound fault feature extraction is the key to analyzing the root cause of wind power gearbox faults. A compound fault feature extraction method based on DRS and improved Autogram is proposed.
Haifei MA   +4 more
doaj   +1 more source

Performance Study on a Single-Screw Expander for a Small-Scale Pressure Recovery System

open access: yesEnergies, 2016
A single-screw expander with 195 mm diameter is developed to recover pressure energy in letdown stations. An experiment system is established using compressed air as a working fluid instead of natural gas.
Guoqiang Li   +5 more
doaj   +1 more source

Statistical data-based prediction of carbon dioxide emission factors of China's power generation at carbon peak in 2030

open access: yesCase Studies in Thermal Engineering, 2023
China has promised to reach its peak carbon dioxide emissions by 2030. Power generation emits the most carbon dioxide in China. Fossil fuels are currently still the largest sources of energy for electricity generation in China.
Xinxin Zhang, Kaili Xu
doaj   +1 more source

Performance evaluation and optimization guidance for steam generating heat pumps with significant temperature lift

open access: yesCase Studies in Thermal Engineering
Steam generating heat pumps (SGHPs) offer a promising alternative to coal-fired boilers. To address the lack of general optimization strategy of autocascade SGHP (ASGHP) for variable operating conditions and variable cycle configurations, this paper ...
Xudong Ma   +4 more
doaj   +1 more source

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