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Fresh Breeze Cuts Down One-Third Ventilation Rate of a Natural Draft Dry Cooling Tower: A Hot State Modelling

Published on Feb 1, 2018in Applied Thermal Engineering4.026
· DOI :10.1016/j.applthermaleng.2017.11.114
Weiliang Wang6
Estimated H-index: 6
(THU: Tsinghua University),
Yuzhao Wang2
Estimated H-index: 2
+ 4 AuthorsWeidou Ni22
Estimated H-index: 22
(THU: Tsinghua University)
Abstract
Abstract The natural draft dry cooling tower (NDDCT) has been increasingly used in power generation for its merits of excellent water-saving, high energy saving, simple maintenance and long life service. To study the performance of a newly installed 660 MW NDDCT under crosswind condition, a model with scale of 1:200 was built according to the scaling law of geometric similarity. The experiments were set up in self-similar region with high Reynolds to meet momentum similarity, while meeting the scaling law of Froude and Euler numbers. A first order law radiator resistance model is also proposed and verified by a systematic test. The exponent law profile of wind velocity above the ground was built and verified by experimental data. On the ground of a constant heating rate bases, the flow field inside the NDDCT and the ventilation rate were investigated at the crosswind range of 0–20 m/s.
  • References (21)
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