| 直接空冷凝汽器加装防风网的数值模拟 |
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| 引用本文： | 丁常富,丁振宇,侯乃明,杨文正,梁娜.直接空冷凝汽器加装防风网的数值模拟[J].动力工程,2009,29(10). |
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| 作者姓名： | 丁常富 丁振宇 侯乃明 杨文正 梁娜 |
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| 作者单位： | 华北电力大学能源与动力工程学院,保定,071003 |
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| 摘 要： | 利用Fluent软件,以国内某600 MW直接空冷机组为例,对迎风侧2个相邻空冷凝汽器进行了数值模拟,得到了不同环境横向风速下空冷凝汽器的传热效率随着风速的增大而降低,而且被环境风冲刷越严重的凝汽器受影响程度越大的结论.针对横向风对空冷凝汽器传热效率的影响,在凝汽器挡风墙下延方向加装了防风网.对加装防风网后的空冷凝汽器进行了数值模拟,分析了防风网的不同结构参数(开孔率、高度)对空冷凝汽器传热效率的影响,结果表明:在加装防风网后凝汽器传热效率显著提高,防风网的结构参数对其防风效果有明显影响,为直接空冷机组的防风网改造提供了理论依据.
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| 关 键 词： | 直接空冷凝汽器 防风网 环境风 开孔率 数值模拟 |
Numerical Simulation of a Direct Air-cooled Condenser Installed with Windshield |
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| DING Chang-fu
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DING Zhen-yu
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HOU Nai-ming
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YANG Wen-zheng
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LIANG Na.Numerical Simulation of a Direct Air-cooled Condenser Installed with Windshield[J].Power Engineering,2009,29(10). |
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| Authors: | DING Chang-fu DING Zhen-yu HOU Nai-ming YANG Wen-zheng LIANG Na |
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| Affiliation: | DING Chang-fu,DING Zhen-yu,HOU Nai-ming,YANG Wen-zheng,LIANG Na(School of Energy and Power Engineering,North China Electric Power University,Baoding 071003,China) |
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| Abstract: | Taking one 600 MW direct air-cooled unit in our country as an example,the numerical simulation for two adjacent air-cooled condensers setting at windward side was carried out by software Fluent.Conclusion shows that the heat exchange efficiency of air-cooled condenser decreases with increasing environmental cross wind speed,and the more seriously the condenser washed by wind,the more greater it is affected.Aiming at influence of the heat exchange efficiency affected by cross wind,the windshield was installe... |
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| Keywords: | direct air-cooled condenser windshield environmental wind permeable rate numerical simulation |
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