Study of Strong Interaction between Electro-magnetic Field and Flow Field in Coal Direct Fired MHD Power Generators with CO2 Recovery

CO2回收燃煤直燃磁流体发电机电磁场与流场强相互作用研究

• 批准号: 09680478
• 负责人: ISHIKAWA Motoo
• 金额: $ 1.92万
• 依托单位: the University of Tsukuba (1998)Kyoto University (1997)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09680478/
• 关键词: MHD Power Generation; Coal Direct Combustion; CO2 Recovery; Shock Wave; Boundary Layer Separation; Three Dimensional MHD Interaction; Power Network Interaction; Inverter System; 石炭直接燃焼; 強いMHD相互作用; 集中アーク現象; インバータ; 交流系統相互作用

We have proposed and analyzed the coal-fired MHD-steam combined system with CO2 recovery, and revealed that 45 % (on the basis of high heat value : HHV) of plant efficiency can be obtained, which takes into account the power required by oxygen production and CO2 liquefaction, when the low temperature electrodes are used, which have been developed by the USA POC project. In this connection, the plant efficiency will decrease to about 30% when the conventional power plant is used. High performance MI-ID-steam combined systems without CO2 recovery have been also proposed and analyzed, leading to that the plant efficiency becomes 50%, 55%, and more than 60% for the air pre-heating temperature of 1620 K, 1780 K, and 2100 K, respectively.Experimental results have been examined with numerical analyses, where the implicit TVD scheme is implemented for the fluid dynamics with k- omega turbulent model to capture shocks and the Galerkin FEM is used for electrodynamics. It has been shown that a large scale asymmetric boundary layer separation and complicated shock waves at the core flow region are induced within the Russian 15 MWe pulsed MHD generator, and also that the saturation phenomena of output power found in experiments were caused by the shock wave and the boundary layer separation.Time-dependent three-dimensional analyses have also been initiated. It has been found for the first time that phenomena of inter-cathode break-down in 10MWe Faraday generator induce complicated three-dimensional structure of current density distribution and bifurcation phenomena of arc current due to the strong three-dimensional MHD interaction between electro-magnetic field and flow field.

提出并分析了具有CO2回收功能的燃煤磁流体动力-蒸汽联合系统，并揭示了当使用美国POC项目开发的低温电极时，考虑到制氧和CO2液化所需的功率，可以获得45%（基于高热值：HHV）的装置效率。在这方面，当使用传统的发电厂时，发电厂效率将降低到大约30%。本文还提出了高性能的无CO_2回收的MI-ID-蒸汽联合系统，并对其进行了分析，结果表明，在空气预热温度为1620 K、1780 K和2100 K时，装置效率分别达到50%、55%和60%以上。其中，流体动力学采用隐式TVD格式，k-ω湍流模型捕捉激波，电动力学采用Galerkin有限元法。研究表明，在俄罗斯15 MWe脉冲磁流体发电机内，在核心流区产生了大尺度的非对称边界层分离和复杂的激波，实验中发现的输出功率饱和现象是由激波和边界层分离引起的，并进行了三维时变分析。首次发现10 MWe法拉第发电机阴极间击穿现象，由于电磁场与流场之间的三维MHD强相互作用，导致了复杂的电流密度分布三维结构和电弧电流分叉现象。

项目成果

Motoo Ishikawa et al.: "Performance Characteristics of Coal-Fired MHD Generator/Line-Commutated Inverter System of Commercial Scale" Proc.1998 International Conference on Power System Technology. 1183-1189 (1998)

Motoo Ishikawa 等人：“商业规模燃煤 MHD 发电机/线路换向逆变器系统的性能特征”Proc.1998 国际电力系统技术会议。

M.Ishikawa,et al.: "Three-Dimensional Behavior of MHD Plasma Near Electrode of MHD Generator" Proc.28th AIAA Plasmadynamics and Lasers Conference. 97-2373. 1-10 (1997)

M.Ishikawa 等人：“MHD 发生器近电极 MHD 等离子体的三维行为”Proc.28th AIAA 等离子体动力学和激光会议。

Motoo Ishikawa et al.: "Three-Dimensional Behavior of MHD Plasma near Electrode of MHD Generator" Proc.28th AIAA Plasmadynamics and Lasers Conference. 97-2373. 1-10 (1997)

Motoo Ishikawa 等人：“MHD 发生器电极附近 MHD 等离子体的三维行为”Proc.28th AIAA 等离子体动力学和激光会议。

M.Ishikawa et al.: "Performance Analysis of Coal-Fired MHD Faraday Channel at IEE,China" Energy Conversion and Management. 38. 499-510 (1997)

M.Ishikawa 等人：“中国 IEE 燃煤 MHD 法拉第通道的性能分析”能源转换与管理。

Motoo Ishikawa et al.: "Stabilization Analysis of Commercial Scale Subsonic Diagonal Type MHD Generator in Consideration of Loading conditions" Trans.of Inst.of Electrical Engineers in Japan. 118B-6. 643-650 (1998)

Motoo Ishikawa 等人：“考虑到负载条件的商业规模亚音速对角型 MHD 发生器的稳定性分析”，日本电气工程师学会 Trans.of Inst.of Electrical Engineers。