<p align="center"><font face="Verdana">风环境对直接空冷系统换热性能影响的数值分析 <br/>赵 弦,董兆一,李 海,彭继业 <br/>国电北京龙源冷却技术有限公司,北京 100176 <br/>Numerical Simulation for Heat Transfer Character of the Direct Air-Cooled Condenser System <br/>ZHAO Xian, DONG Zhao-yi, LI Hai, PENG Ji-ye <br/>Beijing Longyuan Cooling Technology Co., Ltd, Beijing 100176 </font></p><font face="Verdana">
<p><br/>摘 要:由于直接空冷系统暴露在大气环境中,风环境对于直接空冷系统换热性能的影响十分显著。本文介绍了利用计算流体力学方法计算得到考虑了风环境的2×600MW空冷电厂直接空冷系统换热性能的计算结果,分析了不同风速不同风向下空冷系统热风回流的产生原因及量化了热风回流对空冷系统换热性能的影响强度,通过计算不同风环境下空冷系统的散热能力,对比汽机排汽背压曲线,预报了夏季高温风环境下汽机运行背压,对直接空冷电厂在夏季高温环境运行具有指导意义。 <br/>关键词:直接空冷系统;数值分析;风环境;热风回流 <br/>Abstract: As the direct air-cooled condenser system exposes to the atmosphere, the wind environment have significant effect on the heat transfer performance of the direct air-cooled condenser system. Using the CFD software, we calculate the heat transfer character of the direct Air-Cooled condenser System in a 2×600MW plant, analysis the phenomena of heated air reflow of the direct air-cooled condenser system, forecast the backpressure of steam turbine in windy summer. <br/>Key words: Direct Air-Cooled Condenser System, Wind Environment, Numerical Simulation, heated air reflow <br/> </font></p>
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