New Establishment of the Wave Energy Conversion System in the Ocean with Consideration to Environment and Economical Efficiency

兼顾环境与经济效益的新型海洋波浪能转换系统

• 批准号: 16560739
• 负责人: SUZUKI Masami
• 金额: $ 2.3万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16560739/
• 关键词: Wave Power Generation; Wells Turbine; OWC; Guide Vane; Wave Energy; Renewable Energy; Ocean Engineering; Energy Engineering

A wave energy conversion system of Oscillating Water Column (OWC) type is composed of a turbine-generator and an air chamber which changes up-and-down motion of a wave into oscillating airflow. A Wells turbine is the most commonly used air turbine for wave energy conversion systems. This study tries to analyze the mechanism of these three-dimensional flows around the turbine with the flow visualization and the numerical analysis. The important characteristics of the turbine are theoretically derived by the potential theory of cascade. Guide vanes are installed in the Wells turbine in order to improve its efficiency, self-rotating characteristics. This work attempts to explain the role of these guide vanes on the basis of momentum theory. The two dimensional numerical method for analyzing a floating device with an OWC is introduced. The method derives the particular solution that satisfies the boundary condition on the water free surface in the air chamber and on the bottom of the floating device. The optimal profiles are eliminated according to the different conditions from the high efficiency, i.e. the minimum size per a unit power and so on. That the similarity law is considered, when such wave energy conversion system is designed, is very important. It is not important only the exact similarity law, but also the approximate similarity law owing to practical use, and these are described in this paper. In the design, the size of the floating device and the turbine is made small under the same output, securing starting performance. Verification is performed by comparing the technique of a comprehensive simulation with the result of a real sea trial. As mentioned above, in this research, each element characteristic was clarified in the process of the conversion of wave energy into electrical energy through experiments and theoretical analysis, and the design method was established.

振荡水柱（OWC）类型的波能转换系统由涡轮发电机和空气室组成，该空气室将波浪的向上运动变成振荡气流。井涡轮机是波动能量转换系统最常用的空气涡轮机。这项研究试图通过流动可视化和数值分析来分析这些三维流围绕涡轮机的机制。涡轮机的重要特征理论上是由级联反应理论得出的。为了提高其效率，自动旋转的特征，导板安装在井涡轮机中。这项工作试图根据动量理论来解释这些引导叶片的作用。引入了用于分析使用OWC的浮动设备的二维数值方法。该方法得出了满足空气室和浮动装置底部的无水表面边界条件的特定解决方案。根据高效率的不同条件，即每单位功率的最小尺寸等，消除了最佳轮廓。当设计这样的波能量转换系统时，请考虑相似性定律非常重要。这并不是重要的相似性法，而是由于实际使用而具有的近似相似性法，并且在本文中进行了描述。在设计中，浮动设备和涡轮机的尺寸在相同的输出下较小，从而确保了起始性能。通过将综合模拟的技术与真实的海洋试验进行比较，可以进行验证。如上所述，在这项研究中，通过实验和理论分析将波能转化为电能的过程，并建立了设计方法。

项目成果

波力発電システム用浮体型空気室の無拘束時特性

波浪发电系统浮动气室的无约束特性

• 发表时间: 2004
• 期刊: 日本機械学会流体工学部門講演会講演論文集 (CD-ROM)
• 作者: 鈴木正己;鷲尾幸久;窪木利有
• 通讯作者: 窪木利有

ウェルズタービンにおけるガイドベーンの効果

导叶在井式水轮机中的作用

• 发表时间: 2006
• 期刊: ターボ機械 33・12
• 作者: ○峠岡辰幸;福田博也;米森秀登;八坂保能;川上 雄;鈴木正己;鈴木正己;鈴木正己;鈴木正己
• 通讯作者: 鈴木正己

Similarity law of Wave Energy Conversion System with Air Turbine

空气涡轮波浪能转换系统的相似律

• 发表时间: 2005
• 期刊: Proceedings of 10th National Symposium on Power and Energy Systems, Japan Society of Mechanical Engineers (in Japanese) No.05-30
• 作者: Masami SUZUKI;Toshiari KUBOKI;Chuichi ARAKAWA;Shuichi NAGATA;鈴木正己;鈴木正己;鈴木正己;Masami SUZUKI;鈴木正己;鈴木正己;鈴木正己;鈴木正己;鈴木正己;Masami SUZUKI;Masami SUZUKI;Masami SUZUKI;Masami SUZUKI
• 通讯作者: Masami SUZUKI

波力発電用ウェルズタービンのガイドベーン設計法

波浪发电井式水轮机导叶设计方法

• 发表时间: 2004
• 期刊: 日本機械学会流体工学部門講演会講演論文集 No.04-25(CD-ROM)
• 作者: 鈴木正己;荒川忠一
• 通讯作者: 荒川忠一

Design Method of Guide Vane Based on Characteristics of Wells Turbine for Wave Power Generation

基于波浪发电井式水轮机特性的导叶设计方法

• 发表时间: 2006
• 期刊: Transaction of the Japan Society of Mechanical Engineers, Series B (in Japanese) Vol.72, No.714
• 作者: Masami SUZUKI;Toshiari KUBOKI;Chuichi ARAKAWA;Shuichi NAGATA;Masami SUZUKI
• 通讯作者: Masami SUZUKI