Estimation of the wave energy conversion efficiency in the Atlantic Ocean close to the European islands

2016 ◽  
Vol 85 ◽  
pp. 687-703 ◽  
Author(s):  
Eugen Rusu ◽  
Florin Onea
Keyword(s):  
Atlantic Ocean ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Wave Energy ◽  
Energy Conversion Efficiency ◽  
Wave Energy Conversion ◽  
Wave Energy Conversion Efficiency

scholarly journals Influence of Buoy Size on Accelerated Wave Power Generation Device

2021 ◽  
Vol 271 ◽  
pp. 01023
Author(s):  
Hu Chen ◽  
Zhifei Ji ◽  
Yusheng Hu ◽  
Min Lin
Keyword(s):  
Power Generation ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Wave Energy ◽  
Energy Conversion Efficiency ◽  
Wave Energy Conversion ◽  
Generation System ◽  
Power Generation System ◽  
Wave Energy Conversion Efficiency ◽  
Power Generation Performance

This paper proposed a pulley-buoy accelerated wave energy linear power generation system, and the feasibility and effectiveness of this system were verified through experimental research. Compared with the traditional wave energy power generation system with three-stage energy conversion links, the pulley-buoy accelerated wave energy linear power generation system omits the intermediate energy transfer and conversion link, and realizes the direct gain of electric energy from the buoy movement caused by wave, and by introducing the pulley combination, the movement speed of the buoy is enlarged, the power generation of the linear power generation system is increased, thereby the wave energy conversion efficiency of the system is improved. Under laboratory conditions, a small-size pulley-buoy accelerated wave energy linear power generation system prototype and a swing-plate wave-making system were built to explore the effects of different buoy sizes on the power generation performance of the system. The test results show that within the research scope of this paper, increasing the size of the buoy can effectively increase the wave energy conversion efficiency of the system and improve the power generation performance of the accelerated wave energy power generation system. The research results in this paper provide useful experience for the practical application and efficient operation of wave energy power generation systems.

Study on force and wave energy conversion efficiency of buoys in low wave energy density seas

2019 ◽  
Vol 182 ◽  
pp. 191-200 ◽  
Author(s):  
Fei Chen ◽  
Derong Duan ◽  
Qing Han ◽  
Xuefeng Yang ◽  
Fang Zhao
Keyword(s):  
Energy Density ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Wave Energy ◽  
Energy Conversion Efficiency ◽  
Wave Energy Conversion ◽  
Wave Energy Density ◽  
Wave Energy Conversion Efficiency

The Design of a Data Acquisition System for Wave Energy Conversion Efficiency Measurement System

2012 ◽  
Vol 220-223 ◽  
pp. 1539-1542
Author(s):  
Shou Jun Wang ◽  
Guo Dong Wang ◽  
Yu Sen Li
Keyword(s):  
Data Acquisition ◽  
Energy Conversion ◽  
Real Time ◽  
Conversion Efficiency ◽  
Wave Energy ◽  
Data Acquisition System ◽  
Energy Conversion Efficiency ◽  
Wave Energy Conversion ◽  
The Real ◽  
Wave Energy Conversion Efficiency

This paper mainly introduces the design ideas of data acquisition system for wave energy conversion efficiency test system and the usage of data acquisition card.Visual C++6.0 is used as the design platform for the design of the software. The acquisition process is controlled by the multimedia timer and the real-time multi-channel data is collected through the data acquisition card Then the real-time data curve is displayed on the software interface. The collected data can be used as an effective basis for optimizing energy conversion devices.

The Design of a Data Acquisition System for Wave Energy Conversion Efficiency Measurement System Based on the Serial Communication

2013 ◽  
Vol 313-314 ◽  
pp. 1163-1166
Author(s):  
Shou Jun Wang ◽  
Guo Dong Wang ◽  
Chao Li
Keyword(s):  
Data Acquisition ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Wave Energy ◽  
Serial Communication ◽  
Data Acquisition System ◽  
Energy Conversion Efficiency ◽  
Acquisition System ◽  
Wave Energy Conversion ◽  
Wave Energy Conversion Efficiency

This paper mainly introduces the design and programming ideas of data acquisition system for wave energy conversion efficiency test system. The design ideas of this software is that using VC6.0 as a design platform, multi-channel data acquisition through the serial port, and real-time curve display and save the data collected. The serial programming is to use the MSComm control to achieve serial communication between the sensor and PC serial. The software can be used in engineering practice after several tests stable and reliable performance.

Wave Energy Conversion Efficiency of the Dual Cylindrical Caisson Breakwaters Embodying an OWC With a Semi-Arc Inlet on Outer Wall

2017 ◽  
Author(s):  
Jing Chen ◽  
Yongxue Wang ◽  
Guoyu Wang ◽  
Li Cai
Keyword(s):  
Energy Conversion ◽  
Conversion Efficiency ◽  
Wave Energy ◽  
Outer Wall ◽  
Energy Conversion Efficiency ◽  
Experimental Investigations ◽  
Wave Energy Conversion ◽  
Air Chamber ◽  
Wave Heights ◽  
Wave Energy Conversion Efficiency

In the paper, the integrated structure of a dual cylindrical caisson embodying an OWC device is designed. The seaside hemi-toroidal column of the dual cylinder caisson is an air chamber for water column oscillation while the leeside hemi-toroidal column of the dual cylinder is filled with sand for caisson stability. Experimental investigations were carried out on the performance of the OWC at different water depths, wave heights and wave periods, as well as on the layout of the caissons and the nozzle area ratio. Experimental results show that the water depth has significant effect on the wave energy conversion efficiency of dual cylindrical caisson breakwaters embodying an OWC. The new structure proposed as a breakwater or revetment structure especially arranged in a one-third convex arc has advantages in collecting more energy and creating a fine landscape environment.

Research on the Hydrodynamic Performance of a Wave Energy Converter

2014 ◽  
Vol 986-987 ◽  
pp. 956-962
Author(s):  
Xiong Bo Zheng ◽  
Yu Nong Yang
Keyword(s):  
Energy Conversion ◽  
Conversion Efficiency ◽  
Wave Energy ◽  
Energy Conversion Efficiency ◽  
High Energy ◽  
Wave Energy Converter ◽  
Hydrodynamic Performance ◽  
Mechanical Transmission ◽  
Energy Converter ◽  
Wave Energy Conversion Efficiency

Under the pressure of fossil energy shortage, rational exploitation of ocean wave energy is propitious to establish an environmentally friendly society. This paper presents the results of a practical research done in a test tank, on the hydrodynamic performance of a wave energy converter with swing arms and floaters designed purposely. Fixed on a trailer, the converter was composed of two floaters, two swing arms, mechanical transmission devices and generators. The method of this research was to measure the floater’s acceleration and the output voltages of the generator under the movement of waves, analysis the influence of wave height and period on floaters’ movement, then compute the wave energy conversion efficiency. At last, the research findings show that the converter performed well with heaving motion performance and high energy conversion efficiency.

Numerical Simulation of Wave Energy Converter With Hydrofoil Blades Under Various Wave Conditions

2019 ◽  
Author(s):  
Jie Lei ◽  
Erasmo Gonzalez ◽  
Yingchen Yang ◽  
Ying Zhang ◽  
Ben Xu
Keyword(s):  
Unsteady Flow ◽  
Energy Conversion ◽  
Steady Flow ◽  
Conversion Efficiency ◽  
Wave Energy ◽  
Rotational Speed ◽  
Rotational Velocity ◽  
Ocean Waves ◽  
Energy Conversion Efficiency ◽  
Wave Conditions

Abstract Ocean wave is a rich source of renewable energy with much higher power density than winds. Various WEC technologies have been proposed or are under development. In this study, we developed a 2-dimensional (2D) model and analyzed the rotational motion of the lift-type rotor’s blade under steady flow and unsteady flow. The numerical model was validated by experiments under steady flow. Fast Fourier Transform (FFT) analysis was performed to identify the major contribution of frequency in terms of vortexes generated in the flow field. A comparative study was also performed by comparing all the cases in terms of energy conversion efficiency under different wave conditions. It turns out that the efficiency of energy conversion has a maximum value in the steady flow, while the efficiency for unsteady flow keeps decreasing, therefore this is highly due to the increased dissipation because of the oscillating. When the flow is oscillating, the rotational speed of the rotor under periodic condition is lower than the rotational velocity with steady flow, and a curve fitting was performed in this study to predict the periodic average rotational speed. We conclude that for oscillating flow a minimum of 1.6% energy conversion efficiency can be expected, but it may vary for the actual ocean waves. It is expected the current 2D simulation results can contribute to the wave energy community, especially when the rotor design and optimization is required.

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