IR
Numerical study on performance improvement of air-cooled condenser 1 by water spray cooling
Xiao, Liehui1; Ge, Zhihua1; Yang, Lijun1; Du, Xiaoze2
2018-10
发表期刊INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
ISSN0017-9310
卷号125页码:1028-1042
摘要Water spray cooling is an efficient way to enhance heat transfer of the air-cooled condenser (ACC) of power generating unit under high ambient temperatures. Taking the air-cooled 300 MW power generating unit as object, the flow and temperature fields of ACC with water spray cooling were analyzed by numerical simulation with experimental validation. Based on the air flow field inside ACC cell, an improved water spray nozzles arrangement was proposed to enhance the cooling capacity. The inlet air temperature and back pressure of turbine were compared with that under the original nozzles arrangement. The water consumptions including that of water droplets pre-cooling evaporation in air flow, liquid film evaporation on the finned tube bundles, and drainage of redundant water were obtained. The influences of water spray rate, spray direction and nozzles distance on cooling performance were investigated. The results showed that the improved nozzles arrangement is expected to provide efficient cooling performance and significant reduction in back pressure of the objective power generating unit. The improved nozzles arrangement with upward spray direction and nozzles distance of 0.8 m can be applied to the design of water spray system in ACC. In addition, the obtained redundant drainage water under various ambient conditions provided the evidence for spray water rate optimization. (C) 2018 Elsevier Ltd. All rights reserved.
关键词Water spray cooling Air-cooled condenser Back pressure of turbine Water consumption
DOI10.1016/j.ijheatmasstransfer.2018.05.006
收录类别SCI
语种英语
资助项目National Basic Research Program of China (973 Program)[2015CB251503]
WOS研究方向Thermodynamics ; Engineering ; Mechanics
WOS类目Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS记录号WOS:000440118600088
出版者PERGAMON-ELSEVIER SCIENCE LTD
引用统计
被引频次:21[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/32433
专题兰州理工大学
能源与动力工程学院
通讯作者Du, Xiaoze
作者单位1.North China Elect Power Univ, Minist Educ, Key Lab Condit Monitoring & Control Power Plant E, Beijing 102206, Peoples R China
2.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China
通讯作者单位能源与动力工程学院
推荐引用方式
GB/T 7714
Xiao, Liehui,Ge, Zhihua,Yang, Lijun,et al. Numerical study on performance improvement of air-cooled condenser 1 by water spray cooling[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2018,125:1028-1042.
APA Xiao, Liehui,Ge, Zhihua,Yang, Lijun,&Du, Xiaoze.(2018).Numerical study on performance improvement of air-cooled condenser 1 by water spray cooling.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,125,1028-1042.
MLA Xiao, Liehui,et al."Numerical study on performance improvement of air-cooled condenser 1 by water spray cooling".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 125(2018):1028-1042.
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