地下咸水层水-热-盐耦合模型及其储能利用研究  

The research on the coupled model of water-heat-salt in brackish aquifers underground and it's application of storage

作　　者：马玖辰[1,2] 赵军[2] 

机构地区：[1]天津城市建设学院能源与机械工程系,天津300384 [2]天津大学机械工程学院,天津300072

出　　处：《可再生能源》2011年第5期113-119,共7页Renewable Energy Resources

基　　金：天津市科技支撑计划重点项目(08ZCGYSF02400);国家科技支撑计划重点项目(2006BAJ03A06)

摘　　要：基于地下水水热运移的基本原理,针对地下咸水层储能系统中地下水密度及粘滞性系数变化显著的特点,建立地下咸水层水-热-盐耦合储能模型。应用校正后的数学模型,对天津滨海某地下咸水层储能系统未来5 a的地下水动力场和温度场的变化进行了预测。结果表明:在地下咸水层水文地质条件不变的情况下,渗透系数随地下咸水层温度和浓度的增减而增减;在夏季储热期,地下水渗透流速随地下温度的上升呈逐渐上升趋势;在冬季储冷期,地下水渗透流速随地下水温度的下降呈逐渐下降趋势,从而影响地下咸水层温度场的变化,在第5年供冷期末,3#抽水井水温上升0.5℃,发生热突破现象。Based on the basic principle of water-heat transferring in aquifer, in connection with significant variation characters of groundwater density and viscosity coefficient in brackish aquifers storage system, a three-dimenslonal couple numerical model of groundwater brackish aquifer was established in this study,. The revised numerical model was applied to predict the evolution process of the underground water dynamic field and geo-temperature fields in brackish aquifer energy storage and recovery system in Tianjin Binhai New Area for the next five years. The results showed that： the osmotic coefficient of fluid increases when groundwater temperature grows in heat storage season （summer）and decreases with the descent of groundwater temperature in cold storage season （winter）, which brings some influences on the geo-temperature field in brackish aquifers when the hydrogeology condition of brackish aquifer remains the same. At the end of the cold storage season in the 5 th year, heat transfixion occured when the water temperature of 3 rd pumping well increased 0.5 ℃.

关 键 词：咸水层 含水层储能模型 变参数 渗透系数 

分 类 号：TK511.3[动力工程及工程热物理—热能工程]