地埋管回填材料传热性能的研究与分析  

Research and analysis of heat transfer performance of buried pipe backfill material

作　　者：关浩然 张晓明[1] 陈柏龙 GUAN Hao-ran;ZHANG Xiao-ming;CHEN Bai-long

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]哈电(大连)电力设计有限责任公司,辽宁大连116085

出　　处：《节能》2021年第5期14-16,共3页Energy Conservation

摘　　要：当回填材料导热系数大于周围岩土层,对地埋管换热器换热性能提升效果开始逐步递减。研究回填材料增益效果递减的原因,对提高总系统运行效率具有重要意义。通过软件平台Workbench对地埋管换热器在回填材料导热系数不同的情况下进行模拟。结果显示,回填材料在整个传热过程中主要起到疏导热量,扩大导热面积的作用。回填材料导热系数较高时,可通过提高进水管水温进一步开发系统换热效率。when the thermal conductivity of backfill material is larger than that of surrounding rock and soil layer,the improvement effect of heat transfer performance of buried pipe heat exchanger begins to decrease gradually.It is of great significance to study the reason of decreasing gain effect of backfill material to improve the operation efficiency of the total system.By software platform workbench the buried pipe heat exchanger is simulated under the condition of different thermal conductivity of backfill material.The results show that the backfill material mainly plays the role of dredging heat and expanding the heat conduction area in the whole heat transfer process.When the thermal conductivity of backfill material is high,the heat transfer efficiency of the system can be further developed by increasing the water temperature of intake pipe.

关 键 词：回填材料 热短路 地源热泵 数值模拟 

分 类 号：TK52[动力工程及工程热物理—热能工程]