毕节某人民医院地源热泵应用分析

Analysis of Ground Source Heat Pump in a People’s Hospital in Bijie City

为研究毕节市公共场所地源热泵运行可行性与效果,2019年11月,对毕节市某医院室外温度、供热量、耗电量等数据进行115天监测,通过分析系统COP与机组COP对地源热泵在大型公共场所运行情况进行评价。结果表明:系统测试阶段中,日供热量平均值为12.15 MW,变化范围为4.66~17.21 MW;日耗电量平均值为6.34 MW,变化范围为1.37~9.92 MW;热泵机组COP值日平均值为2.92,其变化范围稳定在1.69~4.85;日平均系统COP均值为2.07,变化范围为1.19~3.55;热泵COP与系统COP变化趋势相近;地源热泵使用效率除受到土壤物理性质影响,还受到外界温度影响,在60天后外界环境温度升高,热泵COP值明显增大。各数据说明地源热泵系统在公共区域具有可行性并且有较好的应用前景。

In order to study the feasibility and effect of ground source heat pump operation in public places in Bijie City,the outdoor temperature,heat supply and power consumption of a hospital were monitored by 115 days in November,2019.The operation of ground source heat pump in public places was evaluated by analyzing the system COP and unit COP.The results show that in the system test stage,the average daily heat supply is 12.15 MW,and the variation range is 4.66~17.21 MW.The average daily power consumption is 6.34 MW,and the variation range is 1.37~9.92 MW.The daily average COP value of the heat pump unit is 2.92,which is stable in the range of 1.69~4.85.The average daily COP of the system is 2.07,and the variation range is 1.19~3.55.The variation trend of COP of heat pump is similar to that of system COP.The use efficiency of ground source heat pump is affected not only by soil physical properties,but also by external temperature.After 60 days,the COP of heat pump increases significantly with the increase of external temperature.The data show that the ground source heat pump system is feasible and has a good application prospect in public areas.