摘要
随着超大型自然通风冷却塔淋水面积的增加,淋水填料的均匀配风、配水出现困难,传质、传热效率下降。基于大型树状管网节点水压法对超大型冷却塔的管渠配水系统进行计算,通过获取每个喷淋节点的实际配水压力和流量,评价配水管网设计的合理性,并根据超大型冷却塔的配水要求,对管网进行局部调整。对比结果证明,设计模型的优化效果明显,可较便捷地为工程设计提供各典型工况的配水方案,并可为冷却塔的热质传递数值仿真提供更精确的配水数据。
With the increase of water spray area of the super large natural draft cooling tower, it is difficult to realize uniform air and water distribution in the cooling fillers, which also leads to the decrease of mass transfer efficiency and heat transfer efficiency. Based on the tree-type pipe network node pressure method, the conduit water distribution system of super large cooling tower was calculated. Rationality of the water distribution network design was evaluated by obtaining the actual pressure and flow rate of each spray node, and the distribution network was partially adjusted according to the water distribution require- ment of super large cooling tower. The comparison results showed that obvious optimization effect was a- chieved by the design model, so water distribution scheme of typical working conditions could be provided for engineering design, and more accurate water distribution data was provided for heat transfer numerical simulation of the cooling tower.
作者
李江云
盛旺
陈知超
汪慧
LI Jiang-yun;SHENG Wang;CHEN Zhi-chao;WANG Hui(School of Civil Engineering, Wuhan University, Wuhan 430072, Chin)
出处
《中国给水排水》
CAS
CSCD
北大核心
2018年第11期40-44,共5页
China Water & Wastewater
关键词
超大型自然通风冷却塔
配水
喷淋
管网
优化设计
super large natural draft cooling tower
water distribution
water spray
pipenetwork
optimal design
