超大型高位收水塔和常规塔热力性能研究与优化分析

Discussion of the Super High-level Water Collecting Cooling Tower and the Conventional Tower About Thermal Performance Research and Optimization

由于高位塔收水板间流道的导向作用,高位塔收水装置上部主要传热传质区,特别是填料上方,空气流速基本以塔心最高,而塔壁附近区域空气流速则相对较小,而常规塔最高速度出现在半径的三分之二左右;结合常规塔和高位收水塔各自特点,可通过优化塔型几何尺寸、配风配水、填料不均与布置、增设导流装置等措施降低出塔水温,从而进一步降低机组热耗。为防止高速环境风下高位塔热力性能急剧恶化,需结合厂址气象条件对塔内流场进行整流优化,在塔外进风口增设导流装置等措施可能是今后研究重点。

Due to the flow path guiding role of the high-level tower between the collection board,the high-level tower to close the upper device mainly heat and mass transfer area,especially over the filling,air flow rate substantially at the heart of the highest tow-er,and the tower wall area near the air flow rate is relatively small,whereas the conventional column appears in about two-thirds of the maximum speed of the radius; Combined with conventional tower and high-level tower's characteristics of each tower,by optimizing the geometry size,by optimizing the wind and the water,by optimizing the filling the uneven arrangement,additional measures such as deflector reduce the tower water temperature,thereby further reducing heat consumption. To prevent the high ambient wind speed under the high-level tower thermal performance deteriorated sharply,it requires a combination of meteorological conditions on the site rectifying tower to optimize the flow field,in the tower inlet adding deflector measures may be the focus of future research.