【作者】 陈林；

【导师】 陈国邦；

【作者基本信息】 浙江大学 ， 制冷与低温， 2002， 硕士

【摘要】 冰蓄冷空调系统通过“夜制昼用”的运作方式，提高了能源利用率、优化了资源配置，对经济建设和电网的“移峰填谷”具有重要的现实意义。 综述了国内外冰蓄冷空调系统的研究现状。在对传统的蓄冷方法分析的基础上，提出了采用导热塑料的不完全冻结方式的蓄冰系统。 建立了不完全冻结方式的导热塑料蓄冰盘管的结冰和融冰过程的数学模型，该模型能够较好地模拟蓄冰盘管的结冰和融冰过程。研究了载冷剂进口温度、流速和盘管材料的热导率对蓄冰盘管传热性能的影响，并对完全冻结方式和不完全冻结方式的结冰和融冰过程作了比较。 建立了导热塑料蓄冰盘管传热性能测试装置，测试了结冰和融冰过程中载冷剂的进出口温度、流速和结冰或融冰时间的关系，通过实验结果与理论计算的比较和误差分析，验证了建立的数学模型的合理性。 尝试将导热塑料用于蓄冷系统，进行改进传统的蓄冷方式的研究，对蓄冰盘管系统的进一步发展和应用具有一定的指导意义和参考价值。更多还原

【Abstract】 Ice thermal storage in air conditioning system has been intensively used to shift the energy demand of cooling plants in practical projects mainly because of its compactness and outstanding social and economic benefits.The paper summarizes the status of the development and application of the ice thermal storage. Based on the analysis of the traditional thermal storage, the partial freeze-up of ice-on-coil used conductive plastics is proposed.A numerical model, based on the control volume method, is developed for the freezing and melting of the ice-on-coil thermal storage tank. The model is able to simulate both charging and discharging modes. Furthermore, the impacts of the geometric dimensions of the coils, the inlet temperature and the flow velocity of the secondary fluid on the charge/discharge modes were discussed. A comparison of the total freeze-up and the partial freeze-up has also been made.An experimental apparatus has been set up start from scratch and some experiments have been done to study the heat transfer characteristics of the ice-on-coil tank. The comparison of the theoretical predictions and the experimental data has been made and the disagreements between them are also analyzed.The project of the application of the conductive plastics for the partial freeze-up on ice-on-coil tank is useful to further develop the application of conductive plastics and to improve heat transfer of the ice thermal storage.更多还原