高散热工业生产车间不同气流组织的通风降温特性.

In order to study the improvement effect of new air distribution on the thermal environment of high heat dissipation industrial production workshop, taking a battery material production workshop as a case, the ventilation and cooling characteristics of four air distribution forms for industrial buildings were compared, including mixing ventilation, displacement ventilation, and two new air distribution forms: stratum ventilation and impinging jet ventilation. Using computational fluid dynamics (CFD) method, the workshop airflow was simulated under the same air supply conditions. The results indicate that the mixed ventilation forms the working area temperature up to 39. 1 ℃, while the stratum ventilation, impinging jet ventilation and displacement ventilation reduce the temperature in the working area to 33. 5, 32. 8, 31. 4 ℃ respectively. According to the above cooling characteristics of air distribution, a horizontal thermal stratification thermal environment control method was proposed. Combined with this method, the parameters of air supply speed and air supply volume were studied. It is found that reducing the air supply speed can promote the horizontal stratification of the workshop temperature, so as to reduce the working area temperature without increasing the air supply energy consumption. In addition, there is a critical value of air supply volume of the workshop, below which increasing air supply volume can significantly reduce the workspace temperature, but above which increasing air supply volume can􀆳t significantly improve the cooling effect. The results can be helpful in the ventilation design of industrial buildings. [ABSTRACT FROM AUTHOR]