The natural draft tower of air cooled condenser system require neither mechanical ventilation fan

nor circulating water pump of the indirect dry cooling system

which significantly reduces the noise

house service consumption and net coal consumption of power plant

according with the requirements of the “low-carbon”development era. However

this system has never been applied to large-fossil fired power units

it is necessary to understand the influence of environmental wind direction on heat dissipation of the natural draft tower of air cooled condenser. Using the FLUENT software

numerical simulations of the natural draft tower of air cooled condenser under different wind directions for 2×660 MW unit were conducted to obtain the distribution characteristics of ventilation and heat dissipation of each cooling triangle under different wind directions

the overall heat dissipation performance of the cooling tower and the impact of environmental wind direction on the general layout of the cooling tower and main plant. The results indicate that the central line of the natural draft tower of air cooled condenser of the 2 units should be parallel to the dominant wind direction preferentially.