中国电机工程学报2012，Vol.32Issue(26)：18-22,5.
环境侧风与湿式冷却塔塔内通风量关系的实验研究
Experimental Research of the Correlation Between Environmental Crosswind and Airflow Rate for Wet Cooling Towers
摘要
Abstract
Based on similarity theory, the change rules of circumferential inflow air on the bottom of wet cooling tower under crosswind conditions were researched by thermal state model experiment. Researches show that the axisymmetric distribution of circumferential inflow air is destroyed under crosswind conditions, and this phenomenon is more obvious when environmental crosswind velocity is more than 0.2m/s. Compared with windless conditions, when environmental crosswind velocity is about 0.4m/s, the circumferential inlet wind velocity in windward side is about 1.875 times of windless conditions, but the circumferential inlet wind velocity in leeward side is about 0.3 times of windless conditions. The distribution rules of vortex inside tower was also analyzed, and the circumferential inflow air distribution and vortex distribution rules show that environmental crosswind affects the airflow rate inside cooling tower seriously, and deteriorates the heat and mass transfer performance. The correlation between environmental crosswind and airflow rate (that is air gravity wind velocity) is received based on nonlinear regression by using thermal state model experimental data. In addition, the accuracy of this correlation is verified by onsite test of commercial 140MW power plant.关键词
环境侧风/湿式冷却塔/进塔风速/漩涡分布/通风量Key words
environmental crosswind/ wet cooling tower/inlet wind velocity/ vortex distribution/ airflow rate分类
能源科技引用本文复制引用
高明,赵元宾,张磊,孙奉仲..环境侧风与湿式冷却塔塔内通风量关系的实验研究[J].中国电机工程学报,2012,32(26):18-22,5.基金项目
国家自然科学基金项目(51106092) （51106092）
山东省自然科学基金项目(青年基金)(ZR2011EEQ018). （青年基金）
