Flow field and heat dissipation situation of the condensate unit on a direct air-cooling condenser for a 300 MW unit was simulated.To study the adverse effect of environmental leeward on air-cooled condenser

wind speed at 0 m/s

3 m/s

5 m/s were taken as examples respectively.Results show that

the temperature of air flowing through the condensate unit is higher

inside the A-shape shelf

at the bottom 4 corners

there's strong vortex

and heat dissipation is not obvious.The heat transfer performance will be reduced extremly because of the strong hot air reflow caused by environmental leeward

that is closely related with the flow around effect resulted from tall buildings.The total heat exchange amount was 807 MW

516 MW and 540 MW when the wind speed was as mentioned 0 m/s

3 m/s and 5 m/s

respectively

this indicates that

when the environmental leeward flow rate is not very high

slightly increasing the wind speed can improve the heat transfer performance a bit.