本文建立了热泵耦合含水层储能系统的地下水流动及热质迁移的耦合数学模型,模拟了不同井距和在不同水文地质条件下对井抽灌储能区域的温度场变化.通过分析得出:增大井距可延长发生热突破的时间、提高储能效果,但储能对地下环境的热影响也相应增大;含水层介质的渗透系数(或渗透率)、弥散度以及导热系数越大则储能效果越差,体积比热容越大储能效果越好,且体积比热容对储能效果的影响较显著.
The paper describes that integrated mathematical models are set up based on underground water flow, heat, and mass transfer of aquifer energy storage. The temperature-field distribution of doublet energy storage system with different well distances and hydrogeology conditions are simulated.The results indicate that increasing the well distances could avoid the heat breakthrough to the production well, thus improving efficiency of energy storage but caused the variety of underground temperature; the bigger volume specific heat is, the higher the energy storage efficiency is, and, energy storage efficiency will be lower with increases in the permeability, velocity dispersion and the thermal conductivity in the aquifer.
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