填料加盘管型闭式冷却塔的性能试验研究

Experimental research on performance of closed cooling tower with packing material and coil

通过设计和搭建填料加盘管型闭式冷却塔对其进行了性能测试。试验结果表明,对于结构和设计参数确定的填料加盘管型闭式冷却塔,空气湿球温度和空气流量对其冷却性能的影响最为显著,冷却水流量和进口温度则有较大影响,而喷淋密度在达到最佳值后对其冷却性能的影响基本保持不变,空气干球温度只有较小影响。由于填料的加入,填料加盘管型闭式冷却塔的最佳喷淋密度相对偏小,可以在0.025～0.035kg/(m·s)之间取值。

Through designing and constructing closed cooling tower with packing material and coil, its performance was tested. The results showed that, for the closed cooling tower with packing material and coil which had fixed structure and design parameters, air wet bulb temperature and air flow rate had the most significant influence on its cooling performance, cooling water flow rate and inlet temperature had a great influence, the influence of spray density was essentially unchanged after it had achieved the best value, and air dry bulb temperature had only a minor influence. Due to the addition of packing material, the best spray density of closed cooling tower with packing material and coil was relatively small, which could be set to any value between 0.025 and 0.035 kg/（m·s）.