Results 21 to 30 of about 1,923,981 (357)

Condenser Optimization of Heat Pipe

open access: yesCommunications, 2014
Construction of heat exchanger assembly has important role for efficient operation of energy systems. Within this assembly a heat pipe is utilized for heat transfer. The condensation part of the heat pipe is situated on top of the heating zone.
Radovan Nosek   +4 more
doaj   +1 more source

Energy recovery power supply for piezoelectric actuator [PDF]

open access: yesIECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, 2014
Piezoelectric actuators are used successfully to enable locomotion of micro-robot such as micro air vehicle with flapping wings. However, the use of piezoelectric actuators presents a major challenge for power electronic design: the input capacitance of such devices makes their use delicate because the instantaneous power may be much greater than the ...
Vasic, Dejan, Costa, François
openaire   +2 more sources

Linear active disturbance rejection control of waste heat recovery systems with organic Rankine cycles [PDF]

open access: yes, 2012
In this paper, a linear active disturbance rejection controller is proposed for a waste heat recovery system using an organic Rankine cycle process, whose model is obtained by applying the system identification technique.
Fang Fang   +5 more
core   +2 more sources

Oil Contact Angles in a Water-Decane-Silicon Dioxide System: Effects of Surface Charge

open access: yesNanoscale Research Letters, 2018
Oil wettability in the water-oil-rock systems is very sensitive to the evolution of surface charges on the rock surfaces induced by the adsorption of ions and other chemical agents in water flooding.
Shijing Xu   +5 more
doaj   +1 more source

Market Power and Technological Bias: The Case of Electricity Generation [PDF]

open access: yes, 2006
It is difficult to elminated all market power in electricity markets and it is therefore frequently suggested that some market power should be tolerated: extra revenues contribute to fixed cost recovery,facilitate investment and increase security of ...
Neuhoff, Karsten, Twomey, Paul
core   +2 more sources

Physical simulation of improving the uniformity of steam chamber growth in the steam assisted gravity drainage

open access: yesPetroleum Exploration and Development, 2013
In steam assisted gravity drainage (SAGD) process, there is an uneven distribution of steam chamber growth along the whole length of the horizontal well. In order to solve this problem, a three-dimensional high-pressure physical model of a SAGD well pair
Desheng MA   +5 more
doaj   +1 more source

Simplified Recovery Process for Resistive Solder Bond (RSB) Hotspots Caused by Poor Soldering of Crystalline Silicon Photovoltaic Modules Using Resin

open access: yesEnergies, 2022
When the thickness of the solar cell wafer and the amount of Ag to be used decreases, it is the best method to recover the power of the module after use at a minimum cost and reuse the module itself.
Koo Lee   +3 more
doaj   +1 more source

Machinery Early Fault Detection Based on Dirichlet Process Mixture Model

open access: yesIEEE Access, 2019
The most commonly used single feature-based anomaly detection method for the complex machinery, such as large wind power equipment, steam turbine generator sets, and reciprocating compressors, exhibits a defect of low-alarm accuracy due to the non ...
Bo Ma   +4 more
doaj   +1 more source

Recovering Power Grids Using Strategies Based on Network Metrics and Greedy Algorithms

open access: yesEntropy, 2023
For this study, we investigated efficient strategies for the recovery of individual links in power grids governed by the direct current (DC) power flow model, under random link failures.
Fenghua Wang   +5 more
doaj   +1 more source

A Petri Net-Based Power Supply Recovery Strategy for the Electric Power System of Floating Nuclear Power Plant

open access: yesApplied Sciences, 2022
Floating nuclear power plants contain sensitive loads of nuclear reactors. After equipment faults, fast and efficient power supply recovery should be realized. To realize the unified analysis of system topology and power flow distribution, a power supply
Yikai Wang   +4 more
doaj   +1 more source

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