【作者】 李海军；

【导师】 陈国邦；

【作者基本信息】 浙江大学 ， 制冷及低温工程， 2005， 硕士

【摘要】 近几年来,能源问题越来越受到全球人民的关注。当前我国大中城市用电量与日俱增,电力供应不能满足工业发展与人民生活的需要。在这种形势下,具有实现电力移峰填谷、降低系统运行费用的冰蓄冷低温送风技术在我国逐渐发展起来。 冰蓄冷低温送风空调系统是一种全新的空调系统,有其系统本身的特殊性,不能以常规空调系统处理,本文在对系统深入分析研究的基础上开发了低温送风设计计算与系统设备选型软件,并通过设计实例对软件进行了测试。 在冰蓄冷低温送风空调系统中,送风温度低,供回水温差大,蓄冰设备应具有良好传热性能以满足系统低温送风的要求,所以更加深入地研究蓄冰设备的传热性能有重要意义。内融式冰盘管是当前冰蓄冷低温送风系统中经常采用的一种蓄冰盘管,本文以采用不完全冻结方式融冰的内融式冰盘管为研究对象,主要完成了以下工作: l、搭建了实验台,进行了不完全冻结式冰盘管融冰试验,对融冰过程中环水温度的变化特性进行了分析研究; 2、提出了鼓气融冰方法,设计并搭建了充气装置,实验证明该方法大大提高了蓄冰槽传热性能,进而讨论了充气量的影响; 3、对不完全冻结式冰盘管在融冰过程未完成的条件下的蓄冰特性进行了初步的实验研究。 最后,本文进行了总结,并对下一步工作提出了几点建议。更多还原

【Abstract】 In recent years, energy attracts all over the world more and more attentions. Nowadays, power requirement in big and medium scale city is increasing ever day. Under this background, the cold air distribution with ice storage system which can keep balance on the electric power supply and reach a reduction of the running cost is developed gradually in China.Cold air distribution with ice storage system for air-conditioning is a new technology with some unique traits. The software for calculation on cold air distribution system design and for the product selection based on deep research of the system is developed and tested.Since the low air temperature and the big temperature difference in cold air distribution system with the ice storage, it is important to study further heat transfer characteristics of the apparatus to meet the requirement of the system. Currently, the internal melt ice-on-coil is often used in the project. This paper makes a study on internal melt ice-on-coil with partial charged method, and the following works have been done:1. The experimental apparatus are built up to carry out discharging cycles for the partial charged method of internal melt ice-on-coil. Characteristics of water temperature variation around the tubes aligned horizontally in the tank are analyzed.2. A suggestion improving discharge performance of the ice-on-coil tank by filling air is presented. The experimental apparatus for filling air is designed and built up, and the experimental result shows that the performance of the tank is improved well. Then this paper makes a further research of the effect of the air volume on theperformance of the tank.3. The initial experimental study on heat transfer characteristic of the ice-on-coil during charging before the discharge process is finished.Finally, the summary of this paper is given and some suggestions for further study are presented.更多还原