地下水源热泵系统的运行机制对渗流系数影响的实验研究  

Experimental Study on Influence of Operating Mechanism of Groundwater Source Heat Pump System on Seepage Coefficient

作　　者：陆齐力 官燕玲[1,2] 赵磊[1,2] 赵广印 张瑞杰[1,2] LU Qili GUAN Yanling ZHAO Lei ZHAO Guangyin ZHANG Ruijie(School of Environmental Science and Engineering, Chang＇an University, Xi＇an 710064, China Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang＇an University, Xi＇an 710064, China Energy Saving in Buildings and Wall Materials Innovation office of Baoji, Baoji 721000, Shanxi, China)

机构地区：[1]长安大学环境科学与工程学院,西安710064 [2]旱区地下水与生态效应教育部重点实验室,西安710064 [3]宝鸡市建筑节能与墙体改革办公室,陕西宝鸡721000

出　　处：《建筑科学》2016年第12期142-149,共8页Building Science

基　　金：住房城乡建设部科学技术项目"地埋管换热器在饱和与非饱和岩土中传热传质机理及岩土热物性响应机制研究"(2016-R1-004);陕西省科学技术研究发展计划项目"西安地区土壤源热泵浅层岩土热物性参数区域分布"(2013K13-02-01)

摘　　要：以某市相距不远且地下水、岩层结构很接近的2个地下水源热泵系统为研究对象,在夏季对其水井抽、灌流量和水位进行了为期40多天的检测。2个系统运行机制不同,1个为间歇运行、1个为连续运行。将检测数据代入井群地下水流动数学模型,分析得到抽、灌井渗流系数的动态值,进而得到渗流系数值与运行时间的函数关系,作为渗流系数衰减的预测模型。在此基础上,对2个系统长期运行的渗流系数的衰减分别进行了预测。分析结果表明:2个系统运行120天,间歇运行的系统的渗流系数衰减约为14.4%,连续运行的系统的渗流系数则衰减约为39.7%。In this paper,two close groundwater source heat pump systems in a city with similar groundwater and strata structure were taken as the research object. The volume of pumping and perfusion and water level of wells were tested for more than 40 days in summer. The two systems are with different operation mechanisms,with intermittent operation for one and continuous operation for the other. The dynamic values of the seepage coefficient of pumping and perfusion wells were obtained by putting test data into the well groundwater flow mathematical model,and then the relationship between the seepage coefficient and the operation time is obtained as the prediction model of the seepage coefficient attenuation. On this basis,the seepage coefficient＇s attenuation in longterm operation of the two systems was predicted respectively. The results showed that in the 120 days of operation,the seepage coefficient of system of intermittent operation and continuous operation attenuated by 14. 4% and39. 7%,respectively.

关 键 词：地下水源热泵 运行机制 渗流系数 衰减预测 

分 类 号：TK523[动力工程及工程热物理—热能工程]