北京市某建筑低温负荷下地源热泵系统运行优化研究

Research on Operation Optimization of Ground Source Heat Pump System under Low Temperature Load of a Building in Beijing

通过对北京市某正在低负荷试运行的建筑供热系统展开研究,以地源热泵实际运行数据为基础数据,分析地源热泵系统运行特性。地源热泵系统COP可以看出系统运行情况及性能和对整个地源热泵系统运行的可靠性及稳定性作出评价,系统性能系数COP值越大表明热泵的能量指标越优。结合系统运行主要影响因素采用星点设计—响应面分析法对系统性能系数进行优化分析,最终得出该系统在低负荷运行时的相对最优工况比实际工程COP提升了19.14%。

Based on the research on the heating system with low-load trial operation of a building in Beijing,the operation characteristics of the ground source heat pump system are analyzed based on its actual operation data.The COP of the ground source heat pump system can see the operation and performance of the system and evaluate the reliability and stability of the entire ground source heat pump system.The larger the system performance coefficient COP value is,the better the energy index of the heat pump is.Combined with the main influencing factors of system operation,the star point design-response surface analysis method is used to optimize the system performance coefficient,and finally it is concluded that the relative optimal operating condition of the system under low load operation is 19.14%higher than the actual engineering COP.