A Numerical Simulation About The Adjustment Of Windshield Area Of Xinxing Power Plant Cooling Tower

In winter, the cooling towers in most parts of northern China will face the problem of freezing. Icing greatly reduces the service life of the cooling tower filler. The lower packing and herringbone columns are common freezing parts of middle and small scale cooling tower. The installation of the windshield boards at the air inlet of the cooling tower is an effective measure to avoid water freezing. However, during the actual operation of power plants, it often appears the situation that the number of windshield boards is over large, which decreases the heat and mass exchange economics of unit. Therefore, the study in view of the small and medium-sized power plant that the size of windshield boards have how much influence to flow and heat transfer has very important significance.The research object of this paper is the xinxing power plant cooling tower. A mathematical model of the xinxing power plant cooling tower is established. This paper is calculated by discrete phase model on the spray and rain zone and join the porous medium model to packing area, which explain control equation of the source term through user-defined functions UDF. In this paper, pre processing software GAMBIT and ICEM CFD, numerical calculation software FLUENT16.2 and after processing software CFD Post are used.In this paper, the numerical simulation of icing conditions of winter cooling tower under certain wind speed and different ambient temperatures is carried out, and two effective schemes for the suspension are presented.The main conclusions of this study are as follows: when the lengthwise sus pension of wind clothes was upwind side prior, the ambient dry-bulb temperature for cooling tower just don't freezing were 268.15 K, 266.15 K, 260.15 K when the number of wind clothes were respectively 4, 10 and 16. While the wind clothes were arranged at intervals, the number of wind clothes were respectively 2, 8 and 14. Comparison o f the two arrangements, the wind clothes arranged at intervals have more advantages.