By using the simple algorithm and the k-ε turbulence model in CFD software

the numerical simulation of external flow field for air cooling island of a 660 MW air cooling unit has been carried out

the influence of windshielding wall height upon the heat exchange efficiency of condenser under different wind speed being analysed

and the optimal height of windshielding wall on the air cooling island being obtained.In the case of windshielding wall height being 12 m

the heat exchange efficiency is the highest

if the wall height is further increased

on the contrary

the heat exchange efficiency will decrease.