Influences of Lateral Double-Layered Deflectors on Cooling Performance of Air-Cooled Condenser

The cooling performance of air-cooled condenser (ACC) is susceptible to adverse impacts of ambient winds. In this work, three kinds of lateral double-layered deflectors installed under the ACC platform are proposed to weaken the unfavorable effects of cross winds. Through CFD simulation methods, the main parameters of thermo-flow performances of a 2x660 MW direct dry cooling system are obtained, by which it can be concluded that the deflectors can effectively reduce the inlet air temperatures while enhance the mass flow rates of upwind fans due to the guiding effect, especially at high wind speeds, while the improvement of cooling capacity of ACCs in the 0 degrees wind direction is weak. The inclined-vertical deflectors are superior to others in performance improvement of ACCs for all cases, which can reduce the turbine back pressure by 12.15% when the wind speed is 12 m/s, so they can be applied to the performance enhancement of ACCs under windy conditions in practical engineering.

Automated summary

This study examines the effects of three types of lateral double-layered deflectors on the cooling performance of ACC systems through CFD simulation methods. It was found that inclined-vertical deflectors outperform others in all cases, especially in high wind speeds, and can reduce turbine back pressure by 12.15% at 12 m/s wind speed, making them suitable for practical engineering applications under windy conditions.