The natural wind

especially the crosswind

can lead to back-flow of the hot wind to result in heat-exchange degradation of the condenser

having remarkable effect upon the safe and economic operation of direct air-cooled units.By using commercial software FLUENT

the influence of different speed crosswind upon the flow field of direct air-cooled platform has been simulated

the main factors affecting safe and economic operation of direct air-cooled system being studied and analysed

the measures and preliminary scheme for resisting natural crosswind to hurt direct air-cooled units in China

such as the height of wind-retaining wall

and extraction of hot air from outlet above the air-cooled condenser etc.

being put forward.After implementation of above-mentioned measures

the back flow of hot wind can be effectively restrained and eliminated

providing theoritical basis for avoiding the harmfullness of crosswind in practical operation.