The Research on the Underground Temperature Change Around the Double Vertical U-tube Ground Heat Exchanger in Winter

摘要：

As a new type of energy-saving and environment-protected energy technologies,Groundcoupled source heat pump system is used widely.Research shows that vertical closed-loop ground-coupled heat pumps can save energy from 30% to 70% than air-source heat pumps.It is an energy-efficient air-conditioning system.Because of the difference between heating loads and cooling loads,the heat extraction and injection from the ground are not balanced.So the soil temperature will change with air-conditionings running.Based on a GCSHP system in an office building in Tianjin,China,the variation of the soil temperature is studied.The research shows that the original temperature of the ground is gradually rising with the depth.Its gradient is about 0.03℃/ m.The thermal influence radius of GCSHP in this project is about 2m.

关键词： Ground source heat pump Soil temperature Ground heat exchanger

作者: Zhihua Zhou Shihua Zhang Lingyan Li

作者单位: School of Environmental Science and Technology,Tianjin University,Tianjin,China

会议类型: 国际会议

会议名称: The First International Conference on Building Energy and Environment(第一届建筑能源与环境国际会议)

会议地点: 大连

会议语种:英文

页码: 1104-1110

在线出版日期: 2008-07-01（万方平台首次上网日期，不代表论文的发表时间）