Present Status and Prospect of Utility Air Cooling Technology

The paper briefs the developmental status of three kinds of air cooling system i.e.:direct air cooling system,surface type condenser-indirect air cooling system and mixed type condenser-indirect air cooling system(Heller system). The direct air cooling power plants develop at an unprecedented rate in China,but whether it is overheated or not be worth well notice. The paper summarizes the latest developmental status of key technologies of air cooling system,such as:cooling elements,configuration of finned tube bundles,draft fans,and design techniques;and gives a temperature distribution simulation diagram of the impacts of hot air recirculation and transverse air on the cooling effects. The paper also introduces a kind of new assembly scheme of air cooling radiator,i.e. to employ mould assembly may shorten construction time and reduce capital cost.