Volume 36, Number 3, June 2018
|Page(s)||456 - 463|
|Published online||08 October 2018|
Influence of Ambient Velocity on the Performance of SCAL Indirect Air-Cooled Towers
环境风速对 SCAL 型间接空冷塔性能的影响
In order to explore the influence mechanisms of ambient wind speed on the performance of indirect air-cooled system, SCAL indirect air-cooled towers of a 600MW supercritical unit was taken as an example, and the corresponding calculation model was established. By the ways of CFD numerical simulation and field test, the variations along with ambient velocity of airflow field inside and outside the tower were simulated and the thermal performance of those towers under different ambient velocity was studied. The results showed that, the outlet resistance of air-cooled tower increased in pace with ambient velocity. Both temperature field inside the tower and pressure field inside and outside the tower were influenced by the ambient velocity to a large extent, while flow trajectory of flue gas inside the tower was basically similar. Moreover, the trends and changing laws of performance parameters from the level of segments and the tower were achieved. The conclusions would be of some reference significance for the optimal operation and design of indirect air-cooled system.
Key words: indirect air-cooled tower / numerical simulation / test field / ambient velocity / thermal performance
关键字 : 间接空冷塔 / 数值模拟 / 试验验证 / 环境风速 / 热力性能
© 2018 Journal of Northwestern Polytechnical University. All rights reserved.
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