不同深度的地埋换热孔换热功率分析  

Analysis on the Heat Exchange of Pipes Buried at Different Depth

作　　者：陈海波[1] 高亮[1] 李向宝[1] 陈治法[2] 

机构地区：[1]天津地热勘查开发设计院,天津300250 [2]北京市地质工程公司,北京100039

出　　处：《地质装备》2011年第6期28-30,共3页Equipment for Geotechnical Engineering

摘　　要：本文介绍了在天津地区同一个试验场中，同一台岩土热物性测试仪，在外界温度相差不明显的条件下，对60、80、100、120和150m，5种工程上常用深度的单U、双U型地埋管进行测试。数据表明，同样深度的双u埋管的取热量比单u埋管取热量高9．91-37．75％，同样深度的双u埋管的排热量比单u埋管排热量高0．9～35．6％，而120m双U埋管试验得出的热导率为最大。由此得出换热孔无论是单U埋管，还是双U埋管，排热量还是取热量，适宜深度为100-120m的结论。This paper introduces tests using single and double U-shaped buried pipes in five usual depth of 60m,80m, 100m, 120m and 150m. The test was carried out by using the same soil thermal properties meas- ure apparatus in the same test field of Tianjin and at less variation of external temperature. The data showed that the absorbed heat of the double U-shaped buried pipe is higher than the single U-shaped bur- ied pipe by 9. 91~37.75%, the discharged heat of the double U-shaped buried pipe is higher than the sin- gle U-shaped buried pipe by 0. 9~35.6 %, and the thermal conductivity of the double U-shaped buried pipe is the highest. All the analysis shows that optimum depth of single and double U-shaped buried pipe is 100-120m.

关 键 词：地源热泵 热物性测试 换热器 换热功率 

分 类 号：TK124[动力工程及工程热物理—工程热物理]