回填料对地埋管换热器性能的影响  

Influence of Backfill on Performance of Ground Heat Exchanger

作　　者：李隆键[1] 鲍建镇[1] 廖全[1] 崔文智[1] 

机构地区：[1]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400044

出　　处：《土木建筑与环境工程》2011年第5期90-94,共5页Journal of Civil,Architectural & Environment Engineering

基　　金：重庆市科委自然科学基金(CSTC2009BB6045)

摘　　要：采用了地埋管换热器三维非稳态耦合传热的物理数学模型,针对实际的地埋管结构和热响应测试工况进行了相应的数值模拟。将模拟计算结果与TRT热响应测试结果进行了比较,验证了所建模型的正确性。在此基础上,考察了地埋管换热器回填料导热系数及比热等物性参数对地埋管换热器性能的影响关系,为热响应测试以及工程设计提供有益的理论指导。The physical and mathematical model of three dimensional unsteady coupled heat transfer in the ground heal exchanger is proposed, and corresponding numerical simulations for actual ground heat exchanger and operation condition are carried out. The computed results are compared with those of the thermal resistance test of the ground heat exchanger, which proves the correctness of the model and corresponding numerical methods. Then, the effects of thermal conductivity and specific heat of the ground backfill material on the ground heat exchanger are investigated, which provides theoretical guidance for the thermal response test and the engineering design of the ground heat exchanger.

关 键 词：地埋管换热器 回填料 数值模拟 热响应测试 

分 类 号：TU111.1[建筑科学—建筑理论]