燃煤发电厂烟塔合一环境影响之一——烟气抬升高度的对比计算  

The Environmental Effect of Natural Draft Cooling Towers with Flue Gas Injection in a Burning Coal Plant Part Ⅰ: the Parallel Calculation of Plume Rise

作　　者：崔克强[1] 李浩[1] 

机构地区：[1]中国环境科学研究院,北京100012

出　　处：《环境科学研究》2005年第1期27-30,i003,共5页Research of Environmental Sciences

摘　　要：介绍了德国导则规范的计算冷却塔排放烟气抬升高度的S P模式。利用S P模式做不同大气稳定度条件下不同环境风速的烟气抬升对比计算;确定了同等条件下不同烟气排放速度对烟气抬升高度的影响。作为对比,计算了同样烟气排放量情况下通过烟囱排放烟气的抬升高度。计算结果表明,在弱风状况下从冷却塔排放的烟气由于热力作用其抬升高度比从烟囱排放显著提高。个例计算结果表明,在极不稳定状况下,当风速大于4 5m s时,冷却塔排放烟气抬升高度低于烟囱排放烟气。The S/P model, an integral model for calculating cooling tower plume rise developed in German guidelines, is introduced. The rise of a cooling tower plume is computed for different air stabilities and different wind velocities with the corresponding control data. The parallel plume rise of gas from a chimney or a cooling tower is calculated. The results show that, in the soft wind condition the rise from a cooling tower is remarkably higher than the rise from a chimney because of its heat release. An example result shows that, under extremely unstable air condition with wind velocity greater than 4.5 m/s, the rise from a cooling tower is lower than that from a chimney.

关 键 词：烟塔合一 烟气抬升高度 S/P模式 

分 类 号：X169[环境科学与工程—环境科学]