均摊恒定热流法在土壤温度场影响因素中的应用  

Average Constant Heat Flux Method Applied on the Factors of Soil Temperature Field

作　　者：倪康康 李科群[1] 贾智强[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《建筑节能》2016年第3期22-25,共4页BUILDING ENERGY EFFICIENCY

基　　金：高压加热器启动及运行模拟仿真技术研究(20071001-1)

摘　　要：结合工程实例,建立相应的物理及数学模型,划分出相应的网格。根据能量守恒定律,流出管壁和流入土壤的能量相等。从土壤侧考虑,把流入土壤的热量进行均分得到恒定热流,以得到的恒定热流作为边界条件。确定7个不同物性土壤,并且确定8个不同观测点,并利用分段的均摊恒定热流法对不同物性下的埋地管道进行长时间的模拟运行,分析埋地换热器在不同物性条件下连续运行的总体土壤温度场分布以及各监测点在不同物性土壤处的温度,总结出不同物性对埋地管道运行影响的结论,为以后更进一步分析打下基础。Combined the engineering case, the physical and mathematical model are established, the grid divided. According to the energy conservation, and energy into soil is equal to the energy outflowed the pipe wall. Analyzed from the soil, divided the heat according to the season, taking the constant heat flux as the boundary condition. The constant heat flux is utilized to simulate the buried pipelines under soil of seven different physical properties, with eight different observation points for a long time, analyze the distribution of temperature field and the temperature of every observation point, and summarize the influence of different physical properties to the buried pipelines, and lay the basis for a further analysis.

关 键 词：埋地管道 热流 物性 模拟 温度场 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]