山东省黄河北松散地层现场热响应试验数据分析及应用

Analysis and Application of Field Thermal Response Test Data of Loose Strata in Chiping Area of Shandong Province

现场热响应试验是获取岩土体热物性参数的主要方法之一,可为地源热泵工程中地埋管换热器类型及长度的选择、浅层地热能评价和开发利用提供基础数据。该文系统介绍了现场热响应试验的目的、技术方法、数据处理方法,并以位于山东省茌平地区的现场热响应试验为例,介绍了试验现场的实验过程、试验数据分析及应用。确定了在钻孔间距4～5m时单位延米换热量最佳,并以2号孔为例,采用非稳态数值模型计算了冬季延米换热量为-29.4W/m、夏季延米换热量为41.3W/m。

Field thermal response tests is the main method to obtain thermal physical parameters of rock and soil.It can provide basic data for buried tube heat exchanger type and length of the heat exchanger in the test plant ground source heat pump project,and the evaluation and utilization of shallow geothermal energy.In this paper,the field thermal response test purpose,experimental device,principle,content and steps and data processing method have been introduced.Setting thermal response test in Chiping area of Shandong province as an example,experimental process,analysis and application of test data have been introduced.It is determined that the heat exchange of unit nice is the best when the drilling distance is 4~5 m.By using the non-steady-state numerical model,it is calculated that the heat exchange capacity of the unit rice in winter is-29.4 W/m,and the heat exchange in summer is 41.3 W/m.