天津市某底板下埋管地源热泵系统应用分析

Application of a Underfloor Buried-pipe Ground Source Heat Pump System in Tianjin

以天津市某办公楼底板下埋管地源热泵系统为例,结合实际施工情况,通过TRNSYS软件进行模拟计算,分析将地埋管长度从120 m降低为100 m、井间距从4.2 m减小到3.5 m、回填材料由膨润土、水泥和细砂的混合浆调整为中砂后,该系统长期运行对土壤温度场和机组性能系数的影响。

With the example of the underfloor buried-pipe Ground Soicrce Heat Pump for an officebuilding in Tianjin, considering the practical construction’ the TRNSYS is applied to calculate this system.. The soil temperature and COP of the system, cfter long-time ninning are analyzed tuhen tlwdepth of buried-pipes reduced from. 120 meters to 100 meters, the ivell space deceased from. 4.2 meters to3.5 meters, and the backfill material changed from the mixture of bentonite, cetnent and fine sand, tomedium, sand.