屋面夏季日得热总量与晴空指数的关系

The Relationship between the Total Amount of Heat in the Roof and the Clear Sky Index in Summer

以江西南昌地区近30年的气象数据为基础,用非线性曲线拟合的方法,分析了该地区夏季晴空指数与室外气温的随动性关系;采用数值计算的方法,研究晴空指数对屋面平均温度、传热通量等热工参数的影响,分析晴空指数与屋面全天得热总量的定量关系。结果表明:室外空气温度最大值及室外气温日较差与晴空指数的相关性较大;晴空指数与屋面夏季日热总量的相关性非常明显,可以将屋面日得热总量表达成晴空指数的函数。

Based on the meteorological data of Nanchang in Jiangxi Province for nearly 30 years,the non-linear curve fitting method was used to analyze the follow-up relationship between summer clear sky index and outdoor air temperature in the region.The numerical calculation method was used to study the clear sky index.For the influence of thermal parameters such as average roof temperature and heat flux,the quantitative relationship between the clear sky index and the total amount of heat in the roof was analyzed.The results show that the difference between the maximum outdoor air temperature and the room temperature temperature is significantly correlated with the clear sky index;and the correlation between the clear sky index and the total daily heat of the roof is very obvious,and the total amount of heat generated by the roof can be expressed as clear sky.The function of the index.