中文摘要：

将淋水填料与盘管组合，构成高效低耗的密闭式冷却塔，成为当前闭式塔的主流塔型。本文以此类设备的研发为背景，设计了一个用于蒸发冷却换热模块性能试验的小型风筒，在横流和逆流模式下就单纯管柬换热模块与填料．管柬结合型换热模块的管外换热性能进行了比较，并研究了淋水密度、风量对其换热性能的影响。试验表明，采用填料一管柬结合型换热模块，在相同截面风速和淋水密度以及相同的控制壁温和空气湿球温度条件下，管外综合换热系数比单纯管柬有明显提高；对相同换热模块，管外综合换热系数在试验范围内随淋水密度和截面风速的增大而增大。

英文摘要：

Nowadays, the closed circuit cooling tower which combines tube banks with filling has become a main type in the field of closed circuit cooling towers, for its lower energy consumption and higher efficiency. Based on the development of this type of closed circuit cooling tower, a smail-scaie air duct used for testing the performance of evaporative cooling heat transfer module was designed in this work. The heat transfer performances of filling-tube banks was compared with that of only tube banks under conditions of counterflow and crossflow. Besides, the influences of the density of spray water and the input air on the performance of heat transfer were also considered and studied. The experimental results show that the Comprehensive heat transfer coefficient of filling-tube banks module was much improved than only using tube banks at the condition of the same cross-section air velocity, density of spray water, outside temperature of tube banks and wet bulb temperature; For a same heat transfer module, the comprehensive heat transfer coefficient of heat transfer increase with the increasing of the density of spray water and the cross-section air velocity.