【作者】 万溧； 高理福； 李浩；

【Author】 Wan Li;Gao Lifu;Li Hao;College of civil engineering and architecture,Southwest University of Science and Technology;

【机构】 西南科技大学土木工程与建筑学院；

【摘要】 以西南科技大学新能源改造项目为基础,根据相关技术规范的要求,对双U型地埋管换热器进行了试验测试。建立和实际尺寸完全相同的三维数值模拟模型,通过验证后的数值模拟模型,对地埋管换热器的换热过程进行动态模拟。研究了进水温度和速度、钻井深度、回填材料对U型地埋管换热器换热性能的影响。得出进水温度设计时应综合考虑,循环流速为0.4~0.8m/s比较合适,钻井深度取60~100m较为合理,回填材料的导热系数略大于地埋管周围土壤即可。更多还原

【Abstract】 This paper is based on the new energy reform project of Southwest University of Science and Technology,according to the requirements of relevant technical specifications,test the heat exchanger tube of double U type buried.A 3D numerical simulation model is established and the actual size is exactly the same,after verification by numerical simulation model,dynamic simulation of buried tube heat transfer process of heat exchanger.Study on inlet water temperature and velocity,drilling depth,backfill materials affect the heat transfer performance of heat exchanger of U type buried tube.It should be considered comprehensively when designing the inlet water temperature,circulating flow rate is appropriate for 0.4~0.8m/s,drilling depth of 60~100m is more reasonable,the thermal conductivity of backfill material is slightly larger than the soil around the buried pipe.更多还原