Optimizing Research On Direct Air Cooled Turbine Unit And Air Cooled Island's Structure Of Wind Defend Wall

In this study, the FLUENT software essentially provided a platform of numerical simulation on external flow fields of air-cooling unit with the capacity of 300MW. The principle of hot wind backflow and such circumstances as flow backward was depicted, accompany with analysis on adverse impacts on heat interchanging efficiency. On the basis of mounted windbreak wall, the lower windbreak wall equipped with a zigzag plane was thus been developed. The results show that the retrofitting lower windbreak wall with additional zigzag plane was not only prolong the course of hot wind backflow but also effectively slow down the wind speed, resulting in an improvement of average heat interchanging efficiency of air-cooling condenser. Furthermore, the trend curves with reference to the optimal dimension of lower windbreak wall, as well as the best pattern of surface plane of lower windbreak wall was also proposed, which offer the referential value for structural innovation of air-cooling island.