储能地下含水层两阶段流动换热模型分析

本文考虑了地下含水层储能过程时间跨度大、储能保温分阶段的实际特点，分析了地下含水层流动和换热模型物理参数的对比特点，以热平衡和热扩散原理为基础，建立了分成两个连续阶段的地下含水层储能数值计算模型。该模型以上棉二十九厂先期的同层储能采灌试验数据进行了验证。模型求解中，采用控制容积法，以全隐格式进行热扩散方程的离散化，然后应用Jacobi方法迭代求解，模拟结果和实际观测数据吻合甚好。该模型还分析了含水层储能循环采灌过程中抽出储能水的温度变化的一般特点。结果表明，该数值模拟方法简单而有效，可以为工程建设提供科学依据。

Analysis on a model of sequential thermal transmission for aquifer thermal energy storage

According to the practical characters of the aquifer thermal energy storage such as a process of long duration and storage in twin-phase, this paper analyzed the physical parameters' contrast between the aquifer's flow model and aquifer's heat transfer model. Furthermore, a thermal transmission numerical model in sequential twin-phase was established based on the theory of heat balance and thermal diffusion. The model was validated by the measured results of the same layer thermal energy storage cyclical experiment, carried out at Shanghai No. 29 Cotton Mill. To solve this model, Jacobi's iterative method was utilized, with the help of the finite-volume technique and the implicit scheme of the thermal diffusion equation. The simulated results agree well with the measured data in the test. The general features of the pumping water temperature variance were analyzed in the cyclical application. The results indicate that this numerical method is simple and efficient, and is able to provide scientific basis for engineering design.