In order to improve the flow field structure of rain area in cooling tower and further increase the ventilation

on the basis of the existing flat plate type wind guide plate

this paper proposes a streamline wind guide plate with low wind resistance that can be arranged in the rain area. Under the design condition

by taking the conventional cooling tower and the reformed tower with flat plate-type air guide plate arranged at each height as the reference objects

the influences of the low wind resistance streamline air guide plate on ventilation

flow field structure and temperature distribution of the whole tower are analyzed

at five different arrangement heights(1/6

1/3

1/2

2/3

5/6 air intake height). The results show that

with the rise of the height of the air guide plate arrangement

the air distribution in each region of the tower has changed

which has a significant effect on the packing heat exchange in inner zone

so that the cooling performance of the whole tower improves at first and then declines. When arranging the streamlined wind guide plate at 2/3 height of the air inlet

the ventilation increment and the average temperature reduction at the bottom of the filler area reaches the optimal value

and the improvement effect of the cooling tower performance is the best. Compared with the conventional cooling tower

the circulating water temperature drop and the ventilation increases by 2.65% and 2.78%

respectively. In addition

the circulating water temperature drop increases by 1.2% after the tower is retrofitted with a low wind resistance streamlined air guide

compared with the flat plate with an optimal arrangement height.