对1台额定供冷量为5 kW的地源热泵空调机组进行数学建模,并将其用于地源热泵空调机组夏季连续稳定制冷运行过程的仿真研究,以揭示地下埋管传热特性对地源热泵空调机组运行经济性的影响.研究结果表明,地源热泵空调机组的能耗和COP始终处于变化之中,大致分为急变、过渡和趋稳3个阶段,各个阶段的能耗和COP差别显著,但仍总是优于空气源热泵空调机组.对于该工况下运行的地源热泵空调机组,应以趋稳阶段的能耗和COP作为选型的依据.%A mathematical model was build to modeling a ground source heat pump (GSHP) with cooling capacity rating of 5 kW, which was used to simulate the process of ground-source heat pump air-conditioning under the mode of constant 、stable、 continuous cooling supply in summer, to reveal the influence of characteristics of ground-coupled heat exchanger on GSHP air conditioning unit. It was evident that, energy consumption and COP of GSHP air conditioning unit were always in change,which could be divided into three stage: rapidly changing stage, transition stage and turning to steady stage. There was still some superiority than air source heat pump (ASHP) air conditioning unit, even the differences of energy consumption and COP in the 3 stages were obvious. The energy consumption and COP in the stage turning to steady should be taken as the basis for GSHP air conditioning unit's selection under continuous operation mode.
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