摘要
为确定地下水渗流对竖直地下埋管换热器的影响,该文从实验角度出发,分别对无渗流土壤、饱和土壤中地下埋管换热器热负荷对其周边土壤温度场的影响,有渗流土壤中地下水流速、土壤初始温度以及埋管热负荷对土壤温度场的影响进行了实验,从而得出在夏热冬冷地区或亚热带地区应用土壤源热泵时,宜采用冷却塔-土壤源热泵混合系统形式或将地下埋管换热器埋设在地下水流速较大地区,以期土壤源热泵的长期良好运行。
Because it is necessary to know the influence of groundwater advection on performance of vertical geothermal heat exchanger （GHE）, coupled heat conduction and advection experiments on soil were implemented. These experiments referred to the influence of GHE heat load in saturated soil without seepage on the temperature contour of surrounding soil, and the influence of groundwater flowrate, initial soil temperature, and GHE heat load in soil with seepage on temperature field of soil, respectively. The experimental result shows when the ground source heat pump （GSHP） system is used in the zone with hot summer and cold winter, or sub-tropical zone, it is better to adopt GSHP-cooling tower hybrid system, or bury the GHE in zone with high groundwater flowrate for system＇s long term efficient operation.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2007年第8期874-880,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(50378024)
关键词
地下水流动
地下埋管换热器
实验研究
groundwater flow
geothermal heat exchanger
experimental research
