逆流式冷却塔降温性能及节水研究分析  

Analysis on the performance of cooling and water-saving of counter-flow cooling tower

作　　者：江建军 刘景丽 朱丛静 郭叶书 曹红 刘彬 史玉涛 周剑秋[2] 蔡锐[3] 程清 JIANG Jian-jun;LIU Jing-li;ZHU Cong-jing;GUO Ye-shu;CAO Hong;LIU Bin;SHI Yu-tao;ZHOU Jian-qiu;CAI Rui;CHENG Qing(Nantong Cellulose Fibers Limited Company,Nantong 226008,China;School of Energy Science and Engineering,Nanjing Tech University,Nanjing 211816,China;College of Chemical Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]南通醋酸纤维有限公司,江苏南通226008 [2]南京工业大学机械与动力工程学院,江苏南京211816 [3]南京工业大学化工学院,江苏南京211816 [4]南京工业大学能源科学与工程学院,江苏南京211816

出　　处：《能源工程》2022年第5期62-67,共6页Energy Engineering

基　　金：国家自然科学基金资助项目(52176008)

摘　　要：针对逆流式冷却塔出现冷却性能下降、耗水量大以及冬季塔顶区域出现明显白色“羽雾”等问题。首先建立了冷却塔热力计算模型,然后通过数值计算的方法对冷却塔的冷却性能和耗水量进行了分析。结果表明:环境干球温度越低,湿度越小,则蒸发损失越大;循环水量的增加将导致冷却温降减小,且增大蒸发损失;喷淋温度为34℃时,综合效益最高。此研究为干湿联立冷却塔方案提供了理论支撑,以此达到冷却性能、节水消雾最优的目的。Aiming at the degraded performance of counter-flow cooling tower, large water consumption and white “plume fog” at the top area of tower in winter, a thermodynamic calculation model for cooling tower was established, and the cooling performance and water consumption of cooling tower were analyzed by numerical calculation. The results show that the lower the environmental dry bulb temperature and humidity are, the greater the evaporation loss is. The increase of amount of circulation water will lower the cooling temperature drop and evaporation loss, and the comprehensive benefit is the highest when the spray temperature is 34 ℃. This study provides theoretical support for the scheme of dry-wet integrated cooling tower, which aims to improve cooling performance, saving water and eliminate fog.

关 键 词：逆流式冷却塔 数值计算 蒸发水损失 节水降温 

分 类 号：TK172[动力工程及工程热物理—热能工程]