节能2024，Vol.43Issue(4)：20-24,5.DOI:10.3969/j.issn.1004-7948.2024.04.006
导流板对某660MW电厂空冷单元运行性能的影响及优化研究
Effect of deflector on the operation performance of the air-cooled unit of a 660 MW power plant and its optimization study
呼浩 1古真桢 2孙林 2暴锋 1陈伟雄2
作者信息
- 1. 国家能源集团国神公司技术研究院,陕西 西安 710076
- 2. 西安交通大学动力工程多相流国家重点实验室,陕西 西安 710049
- 折叠
摘要
Abstract
Taking the air-cooling system of 660 MW direct air-cooled unit as the research object,the air-cooled unit model was established by Fluent software,and the effect of axial fan on the heat exchange performance of the air-cooled unit bundle was studied.In order to solve the problem of uneven heat exchange of condensation tube bundles in air-cooled units caused by air cyclones and transverse winds,optimization measures for installing deflectors were proposed,the distribution of condensation in the tube bundles of air-cooled units under windless and transverse wind conditions was studied,and the uniformity of heat exchange of tube bundles before and after optimization was compared.The results show that the installation of deflectors has a good guiding effect.Under the condition of no wind,the installation of all deflectors can reduce the dividing factor of one-side tube bundle by 40.00%,and the installation of some deflectors on the windward side can increase the total condensation amount of tube bundle by 0.76%,while the dividing factor of one-side tube bundle can be reduced by 22.00%.Transverse wind will reduce the heat transfer performance of the tube bundle,which makes the heat transfer of the left and right tube bundles uneven.When the left air enters,installing all deflectors can reduce the average factor of the left tube bundle by 38.93%and the average factor of the right tube bundle by 38.24%.关键词
直接空冷系统/导流板/性能优化/数值模拟Key words
direct air-cooling system/deflector/performance optimization/numerical simulation分类
能源科技引用本文复制引用
呼浩,古真桢,孙林,暴锋,陈伟雄..导流板对某660MW电厂空冷单元运行性能的影响及优化研究[J].节能,2024,43(4):20-24,5.
