江苏火电厂循环水冷却塔设计湿球温度稳定性研究  

Study on temperature stability of wet bulb in circulating water cooling tower of thermal power plants in Jiangsu

作　　者：潘晓春 陈兵 杨杰 程春龙 PAN Xiaochun;CHEN Bing;YANG Jie;CHENG Chunlong(China Energy Engi,ering Group,Jiangsu Power Design Institute Co.’Ltd.’Nanjing 211102,China;Jiangsu Climate Center,Nanjing 210009,China)

机构地区：[1]中国能源建设集团江苏省电力设计院有限公司,南京211102 [2]江苏省气候中心,南京210009

出　　处：《气象科学》2018年第5期666-673,共8页Journal of the Meteorological Sciences

基　　金：国家自然科学基金资助项目(41405092);江苏省气象局科研基金项目(KM201706)

摘　　要：基于现行工业循环水冷却塔设计标准中设计湿球温度计算存在的问题开展针对性研究,根据江苏省13座气象站1961—2013年炎热季逐日气象观测要素,利用傅里叶线谱和小波变换两种周期分析方法,揭示出设计湿球温度具有2 a、6 a、9 a及13 a的年周期性特征;进而通过分析各站不同起算年以及不同样本长度的资料对设计湿球温度计算的影响,探讨了设计湿球温度对资料年限长度的敏感性特征。在此基础上,综合考虑湿球温度的周期性变化与火电厂各代表容量发电机组运行费用,对江苏省境内火电厂不同代表容量机组设计湿球温度计算分别给出了最佳资料年限推荐值。In view of problems of wet bulb temperature calculation in the existing design standard of circulating water cooling tower,a targeted research was made.Based on the daily observation of meteorological elements of 13 meteorological stations in hot season,we found from the Fourier spectrum analysis and the wavelet transfom analysis that wet bulb temperature had period oscillations for 2,6,9,and 13 years.The influence on the calculation of wet bulb temperature with different sample length and starting year was analyzed.On this basis,the period oscillations and the working expenses of different power units in heat-engine plant were considered,the recommended sample length was given,which was used to calculate the design wet bulb temperature for different power units in thermal power plants of Jiangsu.

关 键 词：湿球温度 傅里叶线谱 小波变换 起算年份 最短资料年限推荐值 

分 类 号：P423.3[天文地球—大气科学及气象学]