【作者】 毛佳妮； 陈焕新； 冯广昌； 谢军龙； 苏朝晖；

【Author】 Jiani Mao1, Huanxin Chen1, Guangchang Feng2, Junlong Xie1, Zhaohui Su1 (1.School of Energy and Power Engineering, HUST, Wuhan 430074, Hubei, China; 2. The Fourth Railway Survey and Design Institute,Wuhan 430063, Hubei,China)

【机构】 华中科技大学能源与动力工程学院； 铁道第四勘察设计研究院；

【摘要】 针对广州地下50米以内土壤温度分布来研究广州地区地温的分布特性和变化规律,建立了竖直U型埋管式土壤源热泵地下换热区域温度场的三维稳态和瞬态传热模型,模拟了冬季工况下埋管区域土壤温度场的分布情况,进一步确定了不同土壤初始温度对地埋管换热器埋管深度的影响。最后,通过对某一别墅工程的动态负荷计算,选用ASHRAE推荐的地源热泵设计模拟软件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】 The characteristics of soil temperature distribution are studied, and the computational model of original soil temperature distribution is established for Guangzhou district within 50m underground. Then, a three-dimensional model of the steady and unsteady heat transfer around a single vertical U-tube for GSHP is simulated and the soil temperature field around the buried pipe running is analysed in winter, and the influence of initial temperature for the buried-pipe length is confirmed furtherly. Lastly, on the basis of the annual dynamic load, the importance of thermal balance underground is analyzed by GLHEPRO 3.0, to carry on the task of the device operation simulation for 30 years. It can offer reference of GSHP system on the high effectively running in a long time.更多还原