A numerical study on transient heat transfer of shell and tube type ice thermal storage system is carried out based on the concept of a single u-tube borehole thermal network. Two tubes are arranged in the thermal storage tank in which glycol solution flows in one of the tubes, while a refrigerant flows in the other tube. In this study a boiling heat transfer of the refrigerant is considered to model the heat exchange among the ice storage, the refrigerant and the glycol solution which can be used for air-conditioning application. Temperature variation of all the three substances of the ice thermal storage system (i.e. the ice/water, glycol solution and the refrigerant) with depth has been determined for specified times. Also temperature history of all the three substances has been determined at specific depth of the thermal storage system. Finally the effect of mass flow rate of the refrigerant on the solidification process has been investigated with the numerical method. The transient boiling heat transfer of the refrigerant in the saturated region, the transient single-phase heat transfer process of the glycol solution and the refrigerant at the superheated region, and the solidification process of the ice thermal storage system were all investigated in this study.

中文翻译：

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可持续能源领域的案例研究：空调应用中具有沸腾传热过程的冰蓄热系统的瞬态传热分析

基于单U型管钻孔热网络的概念，对管壳式冰蓄热系统瞬态传热进行了数值研究。储热罐内设有两根管子，其中乙二醇溶液在一根管子中流动，而制冷剂在另一根管子中流动。在本研究中，考虑制冷剂的沸腾传热来模拟可用于空调应用的冰蓄冷、制冷剂和乙二醇溶液之间的热交换。已确定了冰蓄热系统的所有三种物质（即冰/水、乙二醇溶液和制冷剂）在指定时间内随深度的温度变化。此外，所有三种物质的温度历史都已在热存储系统的特定深度处确定。最后用数值方法研究了制冷剂质量流量对凝固过程的影响。本研究主要研究了饱和区工质的瞬态沸腾传热、过热区乙二醇溶液与工质的瞬态单相传热过程以及冰蓄热系统的凝固过程。