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作为同井回灌水源热泵的一种形式,单井循环换热地能采集井非达西效应时渗流场的研究对高效地利用浅层地热能亦具有重要意义。建立Stokes-Forchheimer-Darcy流多流场耦合的流场-温度场数学模型,利用该模型分析算例的物理场,包括温度场及水动力场时空变化规律、出水温度随时间的变化规律。其结果为今后进一步研究单井循环换热地能采集井奠定理论基础,也为有效利用单井循环换热地能采集系统提供科学依据。说明开发利用同井回灌水源热泵对于节约能源、降低碳排放、提高同井回灌水源热泵的工作效率具有重要价值。
As a form of water source heat pump with same well recycle, the study of seepage field when non-Darcy effect can be collected by single well circulation heat exchange is also of great significance for the efficient utilization of shallow geothermal energy. The flow field-temperature field mathematical model of Stokes-Forchheimer-Darcy flow multi-flow field coupling is established. The physical field of the study is analyzed by using the model, including the temporal and spatial variation of temperature field and hydrodynamic field, and the variation law of water temperature with time. The results will lay a theoretical foundation for further research on single-well circulation heat-harvesting energy-harvesting wells and provide scientific basis for effective utilization of single-well circulating heat-exchange energy-harvesting systems. The results show that the development and utilization of the same well irrigation water source heat pump for the conservation of energy, reduce carbon emissions and improve work efficiency with the same well irrigation water pump is of great value.