地源热泵系统中高导热灌注材料性能的研究

Research for the performance of thermally conductive grout in geothermal heat pump

采用普硅水泥、砂子、膨润土、外加剂等原材料合成了用于地源热泵系统中的高导热灌注材料。研究表明,该灌注材料具有较好的流动性能,14d的导热系数达2.504W/m.K,28d的渗透系数为1.9×10-9cm/s。该材料的主要性能指标均满足地源热泵系统灌注材料的要求,具有较大的应用前景。

The thermally conductive grout for geothermal heat pumps consists of Portland cement,silica sand,bentonite,superplasticizer et al.The results show that the thermally conductive grout has a good fluidity,the thermal conductivity of 14 days is u Pto 2.504W/m·K and the h·raulic conductivity is 1.9×10-9cm/s.The main capabilities of the grout satisfied for the geothermal heat pumPand the thermally conductive grout has a extensively utilized future.