以天津某办公楼地源热泵系统为研究对象,通过采集土壤温度、地源侧取热量、负荷侧供热量、机组耗电量、水泵耗电量等实测的数据,初步分析了热泵设定温度(ST),水泵频率(PF)等因素对于土壤温度、机组性能系数(COP)及系统性能系数的影响.结果表明,在满足室内热负荷的前提下,当热泵设定温度从42℃降低至40℃范围内,每降低1℃,可以减小地下取热量7.80%,系统性能系数提升3.66%;当水泵频率从40 Hz降低至30 Hz范围内,每降低5 Hz,可以减小地下取热量7.72%,系统性能系数提升2.64%.对于热负荷占优的公共建筑,可以通过调节地源热泵机组的设定温度或循环水泵频率,来促使土壤温度向着有利于机组高效运行的方向改变,并保证系统的长期可靠运行. Taking the ground source heat pump system in an office building in Tianjin as the research object, the heat pump settings were primarily analyzed by collecting the measured data of soil temperature, heat gain at the source side, heat supply at the load side, power consumption of the unit and power consumption of the pump (ST) and pump frequency (PF) on the soil temperature, unit performance coefficient (COP) and system performance coefficient.The results show that when the heat pump temperature is lowered from 42 ℃ under the premise of satisfying the indoor heat load, To 40 ℃, each decrease of 1 ℃ can reduce the amount of underground heat removal by 7.80% and increase the coefficient of performance of the system by 3.66%. When the frequency of water pump is reduced from 40 Hz to 30 Hz, for every 5 Hz reduction, Heat 7.72% and system performance coefficient 2.64% .For public buildings with dominant heat load, the temperature of the ground-source heat pump unit or circulating pump frequency can be adjusted to promote the change of soil temperature in the direction of efficient operation of the unit, And ensure the long-term reliable operation of the system.