地源热泵系统抽灌模式对地下水流场和温度场的影响

Impact of position and production of injection wells on groundwater flow and temperature field with groundwater source heat pump

摘要: 通过建立三维水热耦合数值模型,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。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。

Abstract: A three dimensional numerical model which couples groundwater flow and heat transfer was developed to simulate changes of groundwater flow field and groundwater temperature field after energy mining for various positioning of multiple(clustered vs interspersed) production and injection wells.The simulation results indicate that the incidence of groundwater flow and temperature are large in the clustered production and injection wells than that in the interspersed form.The interspersed form has higher efficiency than the clustered from.