土壤源热泵冬季工况启动特性的实验研究

Startup characteristics of the ground source heat pump in the mode of heating

结合对土壤源热泵冬季制热工况的实测 ,研究了土壤源热泵的启动工况。结果表明 ,土壤源热泵的冬季启动时间比夏季的短 ,仅为 4～ 5h。实测获得了单位钻孔长的取热率为40～ 60W /m ,可作为设计参考数据。分析了土壤源热泵冬季制热工况的系统COP值和压缩机COP值 ,指出要获得好的节能效果 ,必须优化系统 。

Based on experimental results, studies the startup characteristics of the GSHP in the heating mode which shows that the startup time is merely 4 to 5 hours, shorter than that of on the cooling mode and gives a heat extraction rate of 40 to 60 W per unit depth of the borehole, agreed with the data obtained by some other researchers. Compares the COP value of the heat pump unit with that of the compressor, showing that the system should be optimised by reducing the energy consumption of the pumps and fans to attain better energy efficiency of GSHP.