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通过建立三维水热耦合数值模拟模型,对地下水地源热泵系统井群平行抽灌(即抽水井与回灌井平行布置)以及交叉抽灌(即抽水井与回灌井交错布置)两种调度运行模式下,系统运行后的含水层地下水流场及温度场情况进行了模拟计算、分析。计算结果表明,平行抽灌模式对含水层地下水流场、温度场的影响范围、程度均大于交叉抽灌模式,从系统运行效率以及对地温场的影响方面考虑,交叉抽灌模式均优于平行抽灌模式。
Through the establishment of three-dimensional numerical simulation model of water-heat coupling, two kinds of scheduling (for example, parallel arrangement of pumping wells and injection wells) and cross-pumping (that is, staggered arrangement of pumping wells and injection wells) Under the operation mode, the groundwater flow field and the temperature field of the aquifer after the system operation are simulated and analyzed. The calculation results show that the parallel pumping and pumping modes have more influence scope and extent on the groundwater flow field and temperature field than the cross pumping and pumping modes. The cross pumping mode is better than the parallel pumping mode considering the system operating efficiency and the impact on the geothermal field Pumping pattern.