湿球温度计算方法理论研究  

Theoretical Study on Calculation Method of Wet Bulb Temperature

作　　者：张晓民 阮杰波 王亮 刘京京 姜凯 ZHANG Xiao-min;RUAN Jie-bo;WANG Liang;LIU Jing-jing;JIANG Kai(North China Power Engineering Co., Ltd. of CPECC, Beijing 100120, China)

机构地区：[1]中国电力工程顾问集团华北电力设计院有限公司

出　　处：《电力勘测设计》2019年第A01期143-148,共6页Electric Power Survey & Design

摘　　要：湿球温度作为冷水塔等工程设计中的重要参数,本文进行了自动气象站“干湿表系数”理论值的研究,并应用华北地区5省市部分气象站点的资料进行了湿球温度的推算,研究中优化了推算日平均湿球温度的气象参数选择。通过研究发现,采用简化的绝热饱和温度计算公式,结合气象站的日平均水汽压、日平均大气压、日平均气温推算的湿球温度精度较高,并可满足工程设计需求。通过“干湿表系数”理论值推算的湿球温度能够有效降低冷却塔等的造价,为工程的合理设计及经济性投资提供保证。Wet bulb temperature is a very important meteorological elements in engineering design such as cold water tower. This paper study the automatic weather station theoretical value of psychrometric coefficient, and use the data of part meteorological stations in five provinces and cities in North China to calculate the wet bulb temperature. Optimize the selection of meteorological parameters for estimating daily average wet bulb temperature in the study. It is found that use the simplified adiabatic saturation temperature calculation formula to calculate the wet bulb temperature combining with the daily average water vapor pressure, the daily average atmospheric pressure and the daily average temperature of weather station, can get high precision value and satisfy engineering design requirement. The wet bulb temperature calculated by the theoretical value of psychrometric coefficient can effectively reduce the cost of the cooling tower, etc., and provide a guarantee for the rational design and economic investment of project.

关 键 词：湿球温度 焓值 干湿表系数 相对湿度 相关性系数 

分 类 号：P641[天文地球—地质矿产勘探]