BTR-4000型地层热物性原位测试仪及其应用  

BTR-4000 In-Situ Testing Equipment of Strata Thermophysical Properties and Its Application

作　　者：王庆华[1] 孙友宏[1] 陈昌富[2] 吴晓寒[2] 

机构地区：[1]吉林大学建设工程学院,长春130026 [2]中航勘察设计研究院,北京100098

出　　处：《吉林大学学报（地球科学版）》2009年第2期347-352,共6页Journal of Jilin University：Earth Science Edition

基　　金：国土资源部公益性行业科研专项经费资助项目(200811066)

摘　　要：地层热物性原位测试仪主要包括液路循环系统、数据采集和控制系统及电气控制系统等。利用测试仪对某热交换井进行现场测试,得到换热器进、出口循环水温度随时间逐渐趋于稳定,及换热器与周围土壤的换热量随时间基本保持恒定的相关曲线。采用线源和柱源传热模型,结合参数估计法,计算出平均热物性参数分别为:土壤热传导系数λ=2.428 W/(m.K),钻孔热阻R=0.102(m2.K)/W,及λ=2.164 W/(m.K),R=0.086(m2.K)/W。通过保证测试时间和准确的土壤比热容等参数,可得到准确的热物性参数,计算结果为地源热泵系统的准确设计提供了依据。The field testing equipment of strata thermophysical properties includes fluid circulation line,data collection and control system and electrical control system. An in-situ testing with the rig gets the correlation curve between the inlet and outlet circulating water temperature which gradually turned to be stable with time and quantity of heat transferring of the pipe and soil nearly constant with time. Based on the line-source and cylinder-source heat transfer model, combined with parameter estimation method, the authors get the mean value of thermal properties of soil and well. For soil, the thermal conductivity λ=2. 428 W/（m · K）,thermal resistance R=0. 102 （m^2 · K）/W; and for well, λ= 2. 164 W/ （m · K）,R=0. 086 （m^2· K）/W. By ensuring testing duration and accurate specific heat capacity,correct parameters of thermophysical properties would be achieved. The results give a basis for designing the ground source heat pump system.

关 键 词：地层热物性原位测试仪 平均热物性参数 传热模型 

分 类 号：TK521[动力工程及工程热物理—热能工程]