中国电力2024，Vol.57Issue(6)：225-234,10.DOI:10.11930/j.issn.1004-9649.202306029
填料蒸发预冷进风的机械通风空冷塔设计及其运行性能
Design and Operating Performance of Mechanical Draft Dry Cooling Tower Pre-cooled with Wet Medium
摘要
Abstract
In order to solve the problem of insufficient output of mechanical draft dry cooling tower which can't meet the cooling demand in summer,a mechanical draft dry cooling tower with wet medium pre-cooling inlet air system is designed in this paper.The influence of wet medium thickness,ambient temperature and humidity on the operating performance of the designed dry cooling tower and water-saving performance are carried out by using Matlab program.The results show that 300 mm CELdek7060 medium pre-cooling inlet air system has the best pre-cooling effect and the heat rejection rate of the cooling tower increases by 20.57% at the ambient temperature of 26℃and humidity of 57%;the heat rejection performance of the dry cooling tower decreases with the increases of ambient temperature,and there is a critical temperature of 13.5℃;the wet medium pre-cooling system could improve the heat rejection rate of dry cooling tower by 96.96%,and further reduce the outlet water temperature by 2.80℃at the ambient temperature of 35℃and humidity of 57%;the wet medium pre-cooling system could improve the heat rejection rate of dry cooling tower by 81.14%,and reduce the outlet water temperature by 6.81℃at the ambient temperature of 26℃and humidity of 0%.The total annual energy-saving benefit of a single tower is about 138 400 yuan,which has good economic benefits.关键词
空冷塔/蒸发冷却/填料/排热性能/预冷进风Key words
cooling tower/evaporative cooling/wet medium/heat rejection performance/inlet air pre-cooling引用本文复制引用
王明伟,刘天天,高琦,王春伟,沈吉勇,刘守富,何锁盈..填料蒸发预冷进风的机械通风空冷塔设计及其运行性能[J].中国电力,2024,57(6):225-234,10.基金项目
国家自然科学基金面上项目(51776111) （51776111）
山东省科技型中小企业创新能力提升工程项目(2023TSGC0756),潍坊市科技型中小企业创新能力提升工程(2023TS1007). This work is supported by National Natural Science Foundation of China(No.51776111),Shandong Science&Technology SMEs Innovation Capacity Improvement Project(No.2023TSGC0756)and Weifang Science&Technology SMEs Innovation Capacity Improvement Project(No.2023TS1007). （2023TSGC0756）
