上海地源热泵系统对地质环境的热影响分析

根据地源热泵工程试验场两年监测数据,分析了地下换热区地温场分布特征以及地源热泵系统短期运行对地质环境的热影响效应。换热区地温场分布主要受气温、建筑冷热负荷、原始地温、岩土导热系数、与换热孔距离等因素影响。在吸排热比基本平衡的条件下,地源热泵系统对地质环境的热影响较小。选择合理的埋管间距,充分利用地源热泵的热回收功能,采用冷却塔—地埋管、地表水—地埋管等复合系统,有助于消除吸排热比不平衡现象。

Analyzing the Influence of Heat on the Geological Environment Surrounding Ground Source Heat Pump System in Shanghai

Using two years of monitoring data from a ground source heat pump（GSHP） testing site,this paper discusses the geothermal field distribution characteristics of the heat exchange field,and its short-term influence on the geological environment surrounding the GSHP system.There were five primary factors that influenced the distribution of the geothermal heat exchange field;air temperature,building cooling and heating load,original geothermal conditions,geotechnical coefficients of thermal conductivity,and heat transfer hole distance.When comparing row heat to basic balance conditions,the GSHP system had little thermal influence on the geological environment.It is helpful to eliminate the inhale row heat and imbalance phenomenon when deciding the spacing of buried tubes.Adopting the composite buried tube system,which incorporates cooling towers,surface water and ground buried tubes,ensures optimal use of GSHP heat recovery function.