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为了更准确地模拟地下水源热泵运行周期内各性能参数的变化,结合Fluent与Simulink软件的各自功能,建立了基于Fluent/Simulink的热泵系统协同仿真平台,把因室外温度变化引起的房间负荷的影响动态地叠加到地下管群上,地下含水层温度场的变化耦合至地上热泵系统中,动态地分析不同流态的地下水源热泵系统地下温度场的变化、热贯通程度及热泵机组性能系数COP等特性参数变化.研究表明:低流速态,逆流利于抑制热交互,热泵机组的COP值较高;顺流促进热交互,机组COP值最低;垂直交叉流居于两者之间.高流速态,地下水横流起主导地位,地下水横流对于削弱热泵热交互、提高机组的COP值起到积极作用.实际工程中应根据地理条件对热泵进行优化设计.
In order to more accurately simulate the changes of performance parameters during the operation period of groundwater source heat pump, the Fluent / Simulink software was used to establish the co-simulation platform of heat pump system based on Fluent and Simulink software, and the effect of load on the room caused by outdoor temperature change Dynamically superimposed on the underground pipe group, the change of the temperature field of the underground aquifer is coupled to the ground heat pump system to dynamically analyze the underground temperature field changes, the degree of thermal penetration and the coefficient of performance COP of the heat pump units under different flow regimes The results show that the reverse flow is good at inhibiting the heat interaction and the COP value of the heat pump unit is high, and the downstream heat exchange rate is the lowest, and the COP value of the unit is the lowest. The vertical cross flows between the two. The cross flow plays a leading role and the horizontal flow of groundwater plays a positive role in reducing the heat exchange and increasing the COP of the unit.In the actual project, the heat pump should be optimally designed according to the geographical conditions.