【摘要】 针对广州地下50m以内土壤温度场,研究广州地区土壤温度的分布特性和变化规律,建立垂直单U形地埋管地下换热区域温度场的三维稳态和瞬态传热模型,模拟冬季工况下埋管区域土壤温度场的分布情况,分析不同土壤初始温度对地埋管换热器埋管深度的影响。最后,计算某一别墅工程动态负荷,选用GLHEPRO3.0进行为期30年的系统运行模拟,分析地下埋管区域土壤热平衡对埋管换热性能的影响,从而为广州地区推广使用土壤源热泵系统的长期高效运行提供理论参考。更多还原

【Abstract】 According to soil temperature field of Guangzhou district within 50 m underground,studies the distribution characteristics and the change law of soil temperature.Establishes the three-dimensional steady and unsteady heat transfer model around the temperature field of single vertical U-tube for GSHP,and simulates the soil temperature field around the buried pipe running in winter,analyzes the influence of initial temperature for the buried pipe length.Lastly,on the basis of the annual dynamic load,carries on the task of the device operation simulation for 30 years by GLHEPRO 3.0,analyzes the influence of soil thermal balance on heat transfer performance in the buried pipe district.It can offer reference for GSHP system on long-term running effectively in Guangzhou district.更多还原