Investigation and Analysis on the Performance of the Oscillating Buoy Wave Power Device under the South China Sea

2013 ◽  
Vol 321-324 ◽  
pp. 1365-1372
Author(s):  
Lai Feng Mao ◽  
Jun Zhang ◽  
Quan You Qu ◽  
Hong Zhou He
Keyword(s):  
South China Sea ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
South China ◽  
Dynamic Characteristics ◽  
Wave Energy ◽  
Energy Conversion Efficiency ◽  
Power Device ◽  
Wave Power ◽  
China Sea

The oscillating buoy wave power device is more effective than other devices in energy conversion efficiency, and now it has been widely applied in development of marine wave energy. The oscillating buoy, which is an important component for the oscillating buoy wave power device, is closely related to energy conversion efficiency. In this paper, considering applying conditions in South China Sea, the dynamic characteristic for oscillating buoy is simulated using AQWA software. By analyzing and comparing dynamic characteristics of several different structure bodies, an optimal structure buoy is obtained and it has better energy conversion efficiency.

Cascade of Internal Wave Energy Catalyzed by Eddy‐Topography Interactions in the Deep South China Sea

2020 ◽  
Vol 47 (4) ◽  
Author(s):  
Qianwen Hu ◽  
Xiaodong Huang ◽  
Zhiwei Zhang ◽  
Xiaojiang Zhang ◽  
Xing Xu ◽  
...  
Keyword(s):  
South China Sea ◽  
Internal Wave ◽  
South China ◽  
Wave Energy ◽  
Deep South ◽  
China Sea

scholarly journals The Development of Wave Energy Conversion Device to Generate Electricity

2015 ◽  
Vol 773-774 ◽  
pp. 460-464 ◽  
Author(s):  
M.D. Lafsah ◽  
Mohd Zamri Ibrahim ◽  
Aliashim Albani
Keyword(s):  
Energy Conversion ◽  
Wave Energy ◽  
Power Device ◽  
Wave Power ◽  
Wave Energy Conversion ◽  
Electric Generator ◽  
Measurement Results ◽  
Conversion System ◽  
Energy Conversion System ◽  
Final System

The wave energy is one of promising resource for generating electricity in this country. A wave energy conversion system was designed and fabricated; the prototype was tested and its performance was analyzed. The invention herein proposed a system operated by wave resource. This configuration allows the wave resource working to generate electricity. Wave power device operated by the movement of floaters with varying speed connected to the mechanical racks. These mechanical racks move gears and pulleys, which giving forces to the pulley’s belts to rotate. This pulley’s belts connected to the electric generator that produces the electricity. The final system was tested in the coastal area near to Universiti Malaysia Terengganu (UMT) campus. The measurement results clearly show that the available wave resource could be harness into useful work for electric power generation.

Prospect and Suggestions on the Development of Wave Energy Resource in the South China Sea

2014 ◽  
Vol 672-674 ◽  
pp. 459-466 ◽  
Author(s):  
Chong Wei Zheng ◽  
Jing Pan ◽  
Chong Yin Li
Keyword(s):  
South China Sea ◽  
South China ◽  
Wave Energy ◽  
Energy Resource ◽  
Modern Society ◽  
The South China Sea ◽  
The South ◽  
The Sustainable Development ◽  
China Sea ◽  
Development And Utilization

Against the background of many countries and regions in the world facing energy crisis in the modern society, the development of renewable energy is an inevitable choice. As a non-polluting, renewable, large reserve, widely distributed energy, the development and utilization of renewable wave energy will become the focus. In order to cast a brick to attract jade, this article intends to a preliminary research on the advantage of wave energy, the evaluation on wave energy resource. At last, we also assess the characteristic of wave energy resource in the South China Sea. We hope this study can provide reference for the evaluation of developing wave energy, especially the sustainable development of remote islands.

scholarly journals MODEL EXPERIMENT AND FIELD TEST OF PW-OWC TYPE WAVE POWER EXTRACTING BREAKWATER

2017 ◽  
pp. 2
Author(s):  
Kenichiro Shimosako ◽  
Taro Arikawa ◽  
Masahide Takeda ◽  
Kazuyoshi Kihara ◽  
Yasushi Hosokawa ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Conversion Efficiency ◽  
Field Test ◽  
Large Scale ◽  
Energy Conversion Efficiency ◽  
Primary Energy ◽  
Wave Power ◽  
Medium Scale ◽  
The Past ◽  
Wave Power Conversion

Many research studies on wave power conversion have been conducted in Japan over the past 30 years, but the outgrowth of these studies have yet to be put to practical use. In this study, medium-scale and large-scale hydraulic model experiments as well as prototype field test on a new oscillating water column with a projecting wall (PW-OWC) wave power extracting breakwater were carried out in order to investigate the efficiency of energy conversion. The primary energy conversion efficiency of the PW-OWC converter is about 10% larger than that of the standard OWC type used in the medium-scale experiments. The primary energy conversion efficiency of the large scale experiments is about 20-30-% smaller than that of the medium scale experiments. The secondary energy conversion efficiency ranges from 0.20 to 0.42 and becomes small when the wave period is short and the wave height is large.

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.

Sign in / Sign up

Export Citation Format

Share Document