Numerical modeling of aquifer thermal energy storage system
Numerical modeling of aquifer thermal energy storage system
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DOI：
10.1016/j.energy.2010.08.029
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发表时间：
2010-12
期刊：
影响因子：
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通讯作者：
Jongchan Kim;Youngmin Lee;W. Yoon;Jaesoo Jeon;Min-Ho Koo;Y. Keehm
中科院分区：
文献类型：
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作者：
Jongchan Kim;Youngmin Lee;W. Yoon;Jaesoo Jeon;Min-Ho Koo;Y. Keehm
含水层热能储存系统的性能主要取决于含水层中储存的冷热能之间的热干扰。热干扰主要受井距、水力传导系数和抽注速度的影响。建立了热工水力模型，通过三个参数来识别热干扰，并估计热干扰对系统性能的影响。模拟结果表明，随着井距的减小，随着水力传导系数的增大，随着抽/注速率的增大，热干扰增大。系统性能分析表明，如果η（热锋长度与两个钻孔之间的距离之比）小于1，则系统性能不会受到显着影响，但如果η等于1，则系统性能会下降高达0.22%，福尔斯。对安城某工厂进行了长期建模，以测试ATES系统的适用性。当抽注量为100 m3/d时，系统运行3年后的夏季和冬季性能分别为125 kW和110 kW。因此，100 m3/天的泵送/注入速率满足工厂的能量需求（约70 kW）。
The performance of the ATES (aquifer thermal energy storage) system primarily depends on the thermal interference between warm and cold thermal energy stored in an aquifer. Additionally the thermal interference is mainly affected by the borehole distance, the hydraulic conductivity, and the pumping/injection rate. Thermo-hydraulic modeling was performed to identify the thermal interference by three parameters and to estimate the system performance change by the thermal interference. Modeling results indicate that the thermal interference grows as the borehole distance decreases, as the hydraulic conductivity increases, and as the pumping/injection rate increases. The system performance analysis indicates that if η (the ratio of the length of the thermal front to the distance between two boreholes) is lower than unity, the system performance is not significantly affected, but if η is equal to unity, the system performance falls up to ∼22%. Long term modeling for a factory in Anseong was conducted to test the applicability of the ATES system. When the pumping/injection rate is 100m3/day, system performances during the summer and winter after 3 years of operation are estimated to be ∼125kW and ∼110kW, respectively. Therefore, 100m3/day of the pumping/injection rate satisfies the energy requirements (∼70kW) for the factory.