基于全尺度线热源解的地热换热器集群的温度响应  

Temperature responses of ground heat exchanger clusters based on full-scale line-source solution

作　　者：李平 李旻 马卫武[1] 肖莲荣 

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083 [2]湖南亚华乳业有限公司,湖南长沙410013

出　　处：《中南大学学报（自然科学版）》2017年第10期2819-2824,共6页Journal of Central South University:Science and Technology

基　　金：国家科技支撑计划项目(2012BAD12B04)~~

摘　　要：针对地热换热器集群的跨尺度传热难题,运用匹配渐进展开法和叠加原理,构建全尺度线热源解。计算2种钻孔布置形式(单行和矩阵)的温度响应,分析钻孔间距对地下温度演化过程的影响。从工程应用的角度探讨简化计算地热换热器集群平均温度的问题。研究结果表明:所提出的全尺度线热源解扩展了国内外现有解析解的适用范围。In order to tackle the problem of heat transfer of GHE spanning diverse time-space scales,a full-scale line-source solution was reported for heat transfer of ground heat exchanger(GHE)clusters,which was an analytical solution that was developed from the method of matched asymptotic expansions and the principle of superposition.Temperature-response curves of line-and matrix-arranged GHE clusters were presented and the impact of borehole spacing on temperature evolution in the ground was analyzed.The results show that full-scale line-source solution simplify the calculation temperature range of GHE clusters.

关 键 词：地源热泵 地埋管换热器 温度响应函数 全尺度模型 

分 类 号：TU833.3[建筑科学—供热、供燃气、通风及空调工程]