充分混合法和夹卷法对烟塔合一烟气抬升高度与落地浓度的影响研究

Impact research of the lifting height and the ground concentration of flue gas calculated by fully mixed method and involvement method of Natural Draft Cooling Towers

用S/P模式计算充分混合法和夹卷法在不同大气稳定度和不同环境风速下冷却塔出口处烟气的最大抬升高度,用德国AUSTAL2000模式计算充分混合法和夹卷法在相同条件下冷却塔出口处烟气的最大小时,日均和年均落地浓度。分析结果表明:充分混合法的烟气抬升高度大于夹卷法;充分混合法的污染物落地浓度小于夹卷法。

The maximum lifting height of the flue gas at the outlet of cooling tower at different atmospheric stability and ambient wind speed with fully mixed method and involvement method was calculated by S/P model. The maximum hourly, daily and annual average ground concentration of the flue gas at the outlet of cooling tower under the same conditions were calculated by the German AUSTAL2000 model. The results show that the flue gas lifting height of the fully mixed method is greater than that of the involvement method, and that the pollutant ground concentration of the fully mixed method is smaller than that of the involvement method.