| 余志林,李贵雷,赵顺安.直接空冷凝汽器V型布置与A型布置防风能力对比研究[J].中国水利水电科学研究院学报,2020,18(2):143-148 |
| 直接空冷凝汽器V型布置与A型布置防风能力对比研究 |
| Numerical comparative study of the leeward axial performance of A-shaped layout and V-shaped layout at an air-cooled condenser |
| 投稿时间：2019-02-20 |
| DOI：10.13244/j.cnki.jiwhr.2020.02.009 |
| 中文关键词: 直接空冷 凝汽器布置 环境风 数值模拟 |
| 英文关键词:air-cooled condenser condenser layout wind effects numerical simulation |
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| 中文摘要: |
| 环境风引起的热回流等问题会导致机组背压升高，严重影响直接空冷电厂稳定运行。本文通过数值模拟，比较研究了2×300WM直接空冷电厂凝汽器A型布置和V型布置的防风性能。结果表明在环境风较小（3 m/s-9 m/s）时，V型布置换热效率明显高于A型布置，这种优势随环境风速增加而减小；当环境风速大于15 m/s时，V型布置散热效率与A型布置相比已无优势。 |
| 英文摘要: |
| Hot air recirculation (HAR) caused by wind leads to the higher turbine backpressure which seriously affects the air-cooled condenser (ACC) steady operation. The A-shaped and V-shaped layout ACC in a 2×350 MW power station has been simulated using the computational fluid dynamics code to compare its thermal performance. The results show in the slow wind speed (3 m/s~9 m/s),the thermal efficiency of V-shaped layout ACC was obviously higher than A-shaped,but this advantage decreases with the increasing of wind speed. When the wind speed is greater than 15 m/s,the thermal efficiency of V-shaped layout ACC has no advantage. |
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