技术中心

摘 要： 本文在总结地下岩土热物性现场测试方法的理论模型及算法基础上，通过建立地源热泵岩土热物性现场测试系统的三维数值模型，构建了一个虚拟的标准地质孔，并通过数值模拟得到了热响应曲线。利用常用的三种岩土热物性测试方法对所建虚拟标准地质孔热物性参数进行了辨识，结果表明：与柱热源模型相比，基于线热源的两种测试方法具有较高的计算精度。本文所得结论对土壤源热泵应用设计中地下岩土热物性的准确测试具有指导意义。 关键词： 地源热泵；岩土热物性；现场测试法；数值模拟 Evaluation On The Field Test Method Of Ground Thermal Properties Abstract : In this paper, various theoretical model and algorithms of methods to determine ground thermal properties are briefly summarized, the three-dimensional numerical model of testing system for ground thermal properties was established. Based on the numerical model, the thermal response curve was obtained, the accuracy of three common used methods to determine ground thermal properties were investigated. The results showed that: compared with the cylinder source model, two testing methods based on the line source model have higher precision. To sum up, the study was significant for testing the ground thermal properties during the design of ground source heat pump. Keywords: ground source heat pump; ground thermal properties; field test method; numerical simulation