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Open AccessArticle

Cooling Performance Enhancement of Air-Cooled Condensers by Guiding Air Flow

by 1,2, 1,2, 1,2,*, 1,2 and 1,2
1
Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, Beijing 102206, China
2
School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
*
Author to whom correspondence should be addressed.
Energies 2019, 12(18), 3503; https://doi.org/10.3390/en12183503
Received: 25 June 2019 / Revised: 5 September 2019 / Accepted: 8 September 2019 / Published: 11 September 2019
Adverse wind effects on the thermo-flow performances of air-cooled condensers (ACCs) can be effectively restrained by wind-proof devices, such as air deflectors. Based on a 2 × 300 MW coal-fired power generation unit, two types (plane and arc) of air deflectors were installed beneath the peripheral fans to improve the ACC’s cooling performance. With and without air deflectors, the air velocity, temperature, and pressure fields near the ACCs were simulated and analyzed in various windy conditions. The total air mass flow rate and unit back pressure were calculated and compared. The results show that, with the guidance of deflectors, reverse flows are obviously suppressed in the upwind condenser cells under windy conditions, which is conducive to an increased mass flow rate and heat dissipation and, subsequently, introduces a favorable thermo-flow performance of the cooling system. When the wind speed increases, the leading flow effect of the air deflectors improves, and improvements in the ACC’s performance in the wind directions of 45° and −45° are more satisfactory. However, hot plume recirculation may impede performance when the wind direction is 0°. For all cases, air deflectors in an arc shape are recommended to restrain the disadvantageous wind effects. View Full-Text
Keywords: Ambient wind; air-cooled condenser; air deflector; reverse flow; hot plume recirculation; thermo-flow performances Ambient wind; air-cooled condenser; air deflector; reverse flow; hot plume recirculation; thermo-flow performances
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Huang, X.; Chen, L.; Yang, L.; Du, X.; Yang, Y. Cooling Performance Enhancement of Air-Cooled Condensers by Guiding Air Flow. Energies 2019, 12, 3503.

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