垂直螺旋盘管外膜状凝结换热研究  

Research on film condensation heat transfer of vertical spiral coil surface

作　　者：王永琳[1] 周恩泽[1] 陈晓林[1] 展萌[1] 徐文晓[1] 

机构地区：[1]青岛理工大学

出　　处：《制冷与空调》2015年第8期21-24,共4页Refrigeration and Air-Conditioning

摘　　要：垂直螺旋盘管式冷凝器作为一种结构紧凑、高效节能的换热器已被广泛应用。但由于盘管的螺旋结构,其管外膜状凝结换热过程十分复杂。本文利用水平管束的计算模型对螺旋盘管外的冷凝换热系数进行计算,并通过试验方法对水平管束计算模型进行修正,得到垂直螺旋盘管外膜状凝结换热系数的计算公式。As a kind of heat exchanger with compact structure, high efficient and ener- gy-saving, vertical spiral coil condenser is widely used. Due to its spiral structure, the heat transfer process of film condensation on the surface of vertical spiral tube is very compli- cated. The condensation heat transfer coefficient of spiral coil surface is calculated using calculation model of horizontal tube bundle, and the calculation model of horizontal tube bundle is modified through experiment. The correlation is obtained to calculate the heat transfer coefficient of film condensation of vertical spiral coil surface.

关 键 词：冷凝器 垂直螺旋盘管 膜状凝结换热 水平管束模型 试验 

分 类 号：TK172[动力工程及工程热物理—热能工程]