大型横流塔的节能优化方案

An Energy-Saving Optimisation of the Large-Scale Cross-Flow Cooling Tower

大型横流冷却塔一般采用钢筋混凝土结构，近年来在我国发展迅速。本研究旨在通过消除气场涡流降低风阻及改进填料等手段提高冷却塔冷却效率。原塔设计填料为75mm×35mm×30°P．V．C薄膜式填料，实际运行冷却效率0．623，与设计要求的0．75相比差距较大。通过优化改造设计，单塔风量提高50％以上，单位千瓦电耗产风量提高40％，单塔出水温度降低2℃，冷却效率达0．788。

The large-scale cross-flow cooling tower generally using reinforced concrete structure has recently been developed rapidly in China. A study was carried out to improve its cooling efficiency through eliminating eddy in the air-flow field to reduce drag, improving packing, and etc. The filler of the original tower design was 75 mm ×35 mm×30° PVC film packing. The cooling efficiency of practical operation was only 0.623, far lower than 0.75 of the design specification. By an optimal renovation in design of the cross-flow cooling tower, air volume of a single tower increased by 50%, air output per kilowatt power consumption raised 40% and outlet water temperature of the single tower decreased 2 ℃ whilst the cooling efficiency reached 0.788.