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针对地下蓄能动态控制能流特性与能量保持作用开展研究,在建立大型热源群计算模型的基础上,探索岩土蓄能负荷周期动态控制温变特性和能流特征。通过分析平均温升和最高温度的温变规律以及能量传输能力和边界热流密度可知,地下蓄能负荷分配的温位幅值分布、间歇周期和循环间断周期等不但对蓄能加热期具有明显作用,对于蓄能后保持期的能量扩散也将有一定影响,通过可控性扩散传输,可达到促进蓄能和抑制所蓄能量流失的目的。其中,昼夜性间歇比全日性间歇蓄能更有效,短间歇蓄能周期更加有利。研究结果表明,负荷动态性控制选择,将有利于寻求最佳的蓄能综合效果。
Aiming at the dynamic control of energy flow and energy conservation of underground energy storage, a large heat source group calculation model is established, and the temperature control characteristics and energy flow characteristics of dynamic control of geotechnical storage period are explored. By analyzing the law of temperature change of average temperature and maximum temperature, as well as the energy transfer capacity and boundary heat flux density, the distribution of temperature energy amplitude distribution, intermittent cycle and intermittent cycle of underground energy storage load distribution not only have a significant effect on energy storage heating period , It will also have an impact on the energy diffusion during the retention period after the storage. Through controllable diffusion transmission, the purpose of promoting energy storage and suppressing the loss of stored energy can be achieved. Among them, the circadian interval is more effective than the all-day intermittent storage, and the short-interval storage cycle is more favorable. The results show that the control of load dynamic control will be conducive to finding the best integrated energy storage effect.