摘要
地源热泵系统的成功应用,取决于土壤的换热性能。土壤的换热性能影响地埋管出水温度,温度升高会影响热泵机组的运行效率。地源热泵使用寿命主要取决于埋管周围土壤的换热性能是否衰减。本文运用ANSYS软件,通过稳态换热模型模拟了恒热流情况下管井周围的温度场,分析了管井热阻影响因素,以及土壤含水率对土壤换热系数的影响。
The successful application of the GSHP system depends on the performance of vertical geothermal heat exchanger. The grout heat transfer performance affects the outlet water temperature of the pipe, and the increase of outlet water temperature affects the COP of the heat pump unit. The service life of GSHP mainly depends on the attenuation of the grout heat transfer performance around the pipe. In this paper, ANSYS software is used to simulate the temperature field of the borehole through the steady-state heat transfer model. The factors on borehole heat resistance and soil moisture content on soil heat transfer coefficient are analyzed.
关键词
地源热泵
ANSYS
数值模拟
导热系数
土壤含水率
ground-source heat pump
ANSYS
heat transfer
thermal conductivity
soil moisture content
