In order to improve the cooling performance of cooling tower

this study takes a 300 MW unit cooling tower in the north as an example

establishes a 3D numerical calculation model of cooling tower

compares the effect of non-equal packing in two and three zones on the outlet tower water temperature

determines the optimal radius dividing point

and cooperates with non-uniform water distribution for optimization

analyzes the effect of different optimization schemes on the air flow rate

tower water temperature and ventilation volume in the outlet tower. The results show that the cooling performance is improved with the exit tower water temperature of 31.798 ℃and 31.696 ℃ under the non-equally spaced packing in the second and third divisions

respectively. The coupling optimization of non-equally spaced packing with non-uniform water distribution significantly improves the uniformity of aerodynamic and temperature fields. With the increase of water distribution in the inner zone

the outlet water temperature and ventilation volume both show a trend of first increase and then decrease

and the optimal water distribution in the inner zone is 50%

and the outlet tower water temperature is 31.36 ℃ and ventilation volume is 7 122.8 kg/s. Compared with 26 mm and 30 mm equidistant packing arrangement

after collaborative optimization

the water temperature of the tower is reduced by 0.768 ℃ and 0.83 ℃

respectively

and the cooling performance is significantly improved.