岩土体热物性特征与地埋管换热分析  

Analysis on Thermophysical Characteristics of Rock-soil Body and Ground Heat Exchange

作　　者：佟红兵[1] 

机构地区：[1]北京市地质勘察技术院,北京102218

出　　处：《城市地质》2014年第A01期41-45,共5页Urban Geology

摘　　要：为确定岩土体热物性特征与竖直地下埋管换热的关系,该文从实验角度,分别对岩土体物理性质对岩土体热特性参数的影响,地下埋管换热器热负荷对其周边岩土体温度场的影响,不同测试方法对热物性参数测试结果的影响进行了实验,得出岩土体物理性质和热特性之间无确定性的对应关系,岩土样品测试的热物性参数与现场热响应试验测试的热物性参数,由于测试计算方法和测试条件的差异,结果不同。岩土体初始温度的变化,对岩土体热响应测试结果也存在较大影响。In order to determine the relationship between the thermophysical characteristics of rocksoil bodies and the heat exchange of vertical ground pipes, this article studies the influence of physical properties of rock-soil bodies on the thermal physical parameters, the heat load of ground heat exchangers on the effect of rock-soil bodies＇ temperature fi eld, infl uence of different testing methods on the test the results of thermal parameters of the experiments. The experimental results show that it has no deterministic relationship between the physical properties of rock-soil bodies and thermal properties. Due to differences in methods and test condition calculation test, the thermal physical parameters obtained by testing samples are different from the thermophysical obtained by thermal response test in-site. Of them, initial temperature changes of rock-soil have infl uenced greatly the test results by t hermal response test in-site.

关 键 词：岩土体初始温度 传热系数 导热系数 比热容 地下埋管换热器 

分 类 号：TU831.4[建筑科学—供热、供燃气、通风及空调工程] P642[天文地球—工程地质学]