地源热泵地下岩土热物性的测定方法

Determination of the ground parameter of the rock-soil thermal properties of ground-source heat pump

提出了可用于现场测量计算地下岩土综合热物性参数的方法。垂直埋设在地下的换热器与周围岩土换热过程可以近似地看作半无限大介质中常热流边界条件下的非稳态导热过程来处理。这种方法克服了其他常用研究模型对钻孔中埋管的具体位置、上升管及下降管之间的距离、换热器材料和回填材料的物性参数的要求,相应地消除了上述各个参数所带来的误差。通过测量地埋换热器的循环水流量、进出水口温度,加热器的加热功率等数据确定地下岩土综合的热物性参数。

Raised a measurement that can be used to ground parameter of the rock-soil thermal properties.Heat transfer process of the vertical buried underground heat exchanger and the surrounding rock-soil can be approximately as constant heat flow boundary condition of non-steady state procedure of semi-infinite medium.This method overcomes the other common research models on heat exchanger specific locations,riser and the distance between the vertical pipe,heat exchanger materials and backfill material thermal properties request,accordingly removes all the error brought about by the parameter.By measuring the underground heat exchangers circulating water flow,inlet temperature,heater heating power and other data to determine the ground integrated thermal properties.