地下水源热泵铁锰化学堵塞试验  

Experimental Study on Influencing Factors of Chemical Plugging of Iron and Manganese in Groundwater Source Heat Pump

作　　者：潘俊[1] 宋佳蓉[1] 叶梦星 PAN Jun SONG Jiarong YE Mengxing(School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang, China, 110168)

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2017年第5期953-960,共8页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(41072190)

摘　　要：目的针对在铁锰含量较高地区的水源热泵工程回灌堵塞问题,模拟冬夏季间歇性回灌,分析铁锰化学堵塞影响原因.方法以沈阳理工大学地下水源热泵工程为主要研究对象,通过室内渗流砂柱模拟冬夏季间歇性回灌,在保证渗流砂柱温度为11℃时,用相同回灌水以5℃、24℃两种温度进行回灌,分析水通量、相对渗透系数、渗透系数、孔隙度等变化规律.结果分析表明,冬季回灌水堵塞程度严重,夏季堵塞程度不明显,靠近进水口处的堵塞现象较为明显,说明季节性温度与在渗流途径上溶解氧含量对水源热泵化学堵塞影响较大.结论夏季回灌堵塞程度较冬季回灌发生堵塞程度小,发生时间较晚.锰基本不参与水源热泵的化学堵塞,Fe2+为化学堵塞的主要因素.The problem of recharge of water source heat pump in high iron and manganese content,this paper simulates the intermittent recharge in winter and summer,and analyzes the reason of chemical plugging. The groundwater source heat pump project of Shenyang Ligong University was used as the main research object. The intermittent recharge of winter and summer was simulated by indoor seepage sand column. When the temperature of the sand column was 11 ℃, the same water was used at 5 ℃ and 24 ℃. Temperature, the change of water flux, relative permeability coefficient,permeability coefficient,and porosity were analyzed. Analysis results show that the clogging degree is very obvious in the summer,and the clogging at the inlet is obvious. It shows that the seasonal temperature and the dissolved oxygen content on the seepage flow have a great influence on the chemical plugging of the water source heat pump. In this paper, the influencing factors of iron and manganese recharge in groundwater source heat pump are provided.

关 键 词：地下水源热泵 铁锰化学堵塞 间歇回灌 渗透系数 

分 类 号：TK529[动力工程及工程热物理—热能工程]