| 水电站无压尾水洞引风有效作用长度 |
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| 引用本文： | 余延顺,张少凡,牛艳青,赵永军.水电站无压尾水洞引风有效作用长度[J].南京理工大学学报(自然科学版),2009,33(1). |
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| 作者姓名： | 余延顺 张少凡 牛艳青 赵永军 |
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| 作者单位： | 南京理工大学,动力工程学院,江苏,南京,210094 |
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| 基金项目： | 江苏省自然科学基金创新人才启动项目，南京理工大学科研发展基金 |
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| 摘 要： | 为研究无压尾水洞对引入空气的热湿处理能力,在尾水洞引风热湿交换过程简化模型基础上,建立了基于全热交换效率的引风有效作用长度计算模型,分析了尾水洞断面尺寸、引风入口参数、尾水温度、尾水及空气流速等因素对引风有效作用长度的影响,得出了无压尾水洞引风有效作用长度的变化规律.研究结果表明:尾水洞宽度、入口空气参数及尾水流速对引风有效作用长度的影响较大,而尾水温度对其影响较小.
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| 关 键 词： | 有效作用长度 全热交换效率 无压尾水洞 引风 水电站 |
Effective Ventilating Length of Tailrace Tunnel in Hydropower Stations |
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| YU Yan-shun,ZHANG Shao-fan,NIU Yan-qing,ZHAO Yong-jun.Effective Ventilating Length of Tailrace Tunnel in Hydropower Stations[J].Journal of Nanjing University of Science and Technology(Nature Science),2009,33(1). |
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| Authors: | YU Yan-shun ZHANG Shao-fan NIU Yan-qing ZHAO Yong-jun |
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| Institution: | School of Power Engineering;NUST;Nanjing 210094;China |
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| Abstract: | In order to study the cooling and dehumidifying capacity of the tailrace tunnel,a calculated model of effective length is established through the overall heat transfer efficiency of tailrace tunnel based on the simplified model of heat and moisture transfer of tailrace tunnel ventilating.The influences of section sizes of tunnels,inlet air parameters,water temperature and the velocities of water and air in tunnel on effective length are analyzed,and the variation of the effective length is concluded.The res... |
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| Keywords: | effective length overall heat transfer efficiency tailrace tunnels ventilation hydropower stations |
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