辅助应用桩基埋管地源热泵能效分析

Energy Efficiency of Ground Source Heat Pump with the Auxiliary Energy Pile Borehole Exchangers

对南京某室外钻孔埋管、室内地下埋管和建筑物基础桩基埋管3种技术相结合的地源热泵项目能效进行检测分析。实测数据计算出冬、夏季机组COP可达3.90和4.75,系统EER分别为2.70和3.04,机组运行状况较好,系统能效较高;项目增量投资的静态回收仅需6.83年;与空气源热泵中央空调系统相比,每年可节约标煤100.85 t,减少二氧化碳排放量952.92 t,向环境减排二氧化硫7.72 t,粉尘3.86 t,具有可观的经济效益和显著的环境效益。

The energy efficiency of a ground source heat pump in Nanjing was tested and analyzed, which integrated the traditional outdoor borehole exchangers, indoor borehole exchangers and energy pile borehole exchangers in one system. From test results, COP value is 3.90 in winter and 4.75 in summer while EER is 2.70 and 3.04. Measurement dates display that the unit is in a better position and the system is in higher energy efficiency. Compared with the air source heat pump system, it takes only 6.83 years to recover the extra cost, but saves standard coal 100.85 t/a, reduces carbon emissions 952.92 t/a, sulfur dioxide emissions 7.72 t/a, dust emissions 3.86 t/a. The benefits of economic and environment is very considerable.