Lanzhou University of Technology Institutional Repository (LUT_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 |
ISSN | 0017-9310 |
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 |
DOI | 10.1016/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 | |
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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