直埋敷设冷水管道的保温性能分析

Study on thermal insulation properties of underground chilled-water pipe

本文主要利用"对映法"和传热学原理对区域供冷系统直埋管道单位管长的散冷量进行分析和计算,用算例加以说明,并在算例的基础上分析了管道散冷量的四个影响因素,得出了管道散冷量随保温材料的导热系数、保温层厚度、土壤温度、土壤导热系数的变化关系。

In this paper the cold loss of the underground buried chilled - water pipes in district cooling system was analyzed and calculated with the aid of ＂mapping method＂ and principles of heat transfer and illuminated with an example. Four factors which affect the cold loss of the pipes including thermal conductivity of insulation material; insulation layer thickness; soil temperature and soil thermal conductivity were analyzed based on the example calculated and the quantitative relationships between them were also obtained.