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通过土壤源热泵系统夏季工况实验,获得了热泵机组耗功量、土壤换热量、机组的性能系数以及热泵运行前后地下埋管周围土壤的温度分布数据。在实验的基础上,探讨了热泵系统间歇运行时间以及土壤温度的恢复率对热泵运行性能的影响。实验结果表明:同一埋管深度处,机组的运行时间越长,土壤短期内可恢复的可用稳定温度越高,且需要的稳定恢复时间也越长。
Through the experiment of ground source heat pump system in summer, the heat pump unit power consumption, soil heat transfer, unit performance coefficient and temperature distribution of soil around the underground pipe before and after heat pump operation were obtained. Based on the experiment, the influence of the intermittent operation time of heat pump system and the recovery rate of soil temperature on the heat pump operation performance are discussed. The experimental results show that the longer the unit running time is, the longer the available stable temperature is and the longer the recovery time is needed.