| 空冷岛内气流分布不均对冷却效果的影响 |
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| 引用本文： | 荆有印,丁桂艳,王长海.空冷岛内气流分布不均对冷却效果的影响[J].东北电力技术,2008,29(11). |
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| 作者姓名： | 荆有印 丁桂艳 王长海 |
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| 作者单位： | 华北电力大学能源与动力工程学院,河北,保定,071003 |
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| 摘 要： | 在空冷式发电厂中,风机群布置在A-型翅片管束冷凝单元下面。为了揭示风机旋转气流对空冷单元内气流分布特性的影响,建立了风机及空冷单元的物理模型和数学模型,对空冷岛及其风机的流场进行了数值模拟,分析了空冷岛夏季工况出力不足的原因,并提出加装消旋格珊的改进措施,为空冷岛设计和改进提供了参考依据。
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| 关 键 词： | 直接空冷 风机 数值模拟 Fan模型 |
The Impact of Uneven Gas Flow Distribution inside Air-Cooling Island on Cooling Effect |
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| JING You-yin,DING Gui-yan,WANG Chang-hai.The Impact of Uneven Gas Flow Distribution inside Air-Cooling Island on Cooling Effect[J].Northeast Electric Power Technology,2008,29(11). |
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| Authors: | JING You-yin DING Gui-yan WANG Chang-hai |
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| Affiliation: | JING You-yin DING Gui-yan WANG Chang-hai |
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| Abstract: | Draft fan group is deployed under A-type finned tube bundles condensate unit in air-cooling power plant.To reveal the impact of rotating fan air flow on distribution feature inside the air-cooling unit,physical model and math model is set up for draft fan and air-cooling unit to make numerical simulation on air-cooling island and draft fan flow field.Also analysis is made on the inefficient output of summer working condition in side the air-cooling island,and proposals for adding despun grids are put forward,providing references for the design and improvement for air-cooling island. |
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| Keywords: | Direct air-cooling Draft fan Numerical simulation Fan model |
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