顺排管束外蓄冰过程的环水温度变化特性  

Characteristics of water temperature variation accompanied by ice formation around isothermal tubes aligned horizontally in a rectangular enclosure

作　　者：刘道平[1] 周文铸[1] 陈之航[1] 

机构地区：[1]上海理工大学动力工程学院,上海200093

出　　处：《上海理工大学学报》2003年第3期205-208,共4页Journal of University of Shanghai For Science and Technology

摘　　要：通过对有限空间等间距水平顺排恒壁温管束外蓄冰过程的实验研究,揭示了环水温度和中管周围水温的变化特征和降温特点,明确了环水和上下管间水的降温过程存在的对流和密度反转现象,以及在蓄冷过程中管间流场的相互作用。实验结果表明在初始水温度较高时,环水和中上管间的水降温过程会存在明显的降温停滞现象,并出现不同温度的降温平台。降温停滞平台的长短与初始水温以及盐水温度的高低有关。The Experimental investigations for water temperature during ice formation around 9 isothermal tubes aligned horizontally with equal interval in a rectangular enclosure ware carried out. The signature of water temperature variation in surroundins and around the middle tube were observed. The induced natural convection and density inverse of water under experimental conditions exist in surroundings and around middle tube. The interaction of flow field between tubes is also clarified during the cool storage process. The result shows that the decreasing process of water temperature in surroundings and above middle tube will stagnate evidently at 2℃ when initial temperature of water is higher than 4℃. The duration of stagnatation is dependent on initial temperature and brine temperature.

关 键 词：冰蓄冷 顺排布置 降温停滞 

分 类 号：TB65-75[一般工业技术—制冷工程] TK24[动力工程及工程热物理—动力机械及工程]