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针对不同负荷设计地源热泵运行效果问题,建立理想的“对井抽-灌”概念及数学模型。通过冷负荷分析计算,模拟拟建地下水源热泵系统夏季运行期不同负荷设计下地下水热量运移过程。结果表明:不同冷负荷设计对热泵系统运行效果影响显著,循环水量是决定“热贯通”现象发生与否及程度强弱的重要因素,原因在于抽-灌地下水流作用对地下水热量运移过程的决定性影响,地下水源热泵系统宜采取“大温差、小流量”的运行模式。
According to different load design ground source heat pump operation effect, the establishment of the ideal “well pumping - irrigation” concept and mathematical model. Through the analysis of the cooling load, the groundwater heat transfer process under different load design in summer operation period of the proposed groundwater source heat pump system is simulated. The results show that the effect of different cooling load design on the operation performance of heat pump system is remarkable. The circulating water content is an important factor that determines the occurrence of the phenomenon of “hot through” phenomenon and its degree. The reason is that the effect of pumping-filling groundwater flow on groundwater heat transfer The decisive influence of the process, groundwater source heat pump system should adopt “large temperature difference, low flow ” mode of operation.