双层保温热力管路的数值计算  

Numerical Calculation of Thermal Pipeline of Double Insulating Layers

作　　者：于丽丽[1] 王为民[1] 王亮 魏文杰[1] 张纯静[1] 

机构地区：[1]辽宁石油化工大学,抚顺113001 [2]中油辽河工程有限公司,盘锦124010

出　　处：《科学技术与工程》2012年第29期7701-7704,共4页Science Technology and Engineering

摘　　要：为了求解热力管路双保温层经济厚度,综合考虑了各种约束条件,用Visual Basic 6.0语言设计了求解程序,因为保温材料的导热系数随温度而变化,采用迭代法求解了每层材料的平均温度,并给出了计算程序。通过ANSYS12.0软件模拟了管路横截面温度场,绘制了管路径向温度变化曲线,分析得出,在内外层保温材料厚度相同且均满足工程实际耐热性与抗压性等条件下,导热系数较小的材料放在内层相比于放在外层来说,单位管长散热量较少。In order to solve the economical thickness of thermal pipeline of double insulating layers, various kinds of constraint conditions had been considered, the solving program was designed by Visual Basic 6.0. Because of the coefficient of thermal conductivity of thermal insulating material changes with temperature, the average tem- perature of the every layer material was solved by iterating and its calculating program was designed. Pipeline tem- perature field was simulated by ANSYS12.0, and radial temperature change curve of pipeline was drawed. When innner and external material with the same thickness both meet conditions of the engineering practical heat resist- ance and resistance, and coefficient of thermal conductivity of the inner material is smaller than external material, heat dissipating capacity of per unit length of pipeline is less.

关 键 词：双保温层 经济厚度 温度 

分 类 号：TE832.34[石油与天然气工程—油气储运工程]