Lanzhou University of Technology Institutional Repository （LUT_IR）
| Entransy dissipation based optimization of a large-scale dry cooling system | |
| Wei, Huimin1; Du, Xiaoze1,2; Yang, Lijun1; Yang, Yongping1 | |
| 2017-10 | |
| 发表期刊 | APPLIED THERMAL ENGINEERING
 |
| ISSN | 1359-4311 |
| 卷号 | 125页码:254-265 |
| 摘要 | The natural draft dry cooling tower (NDDCT) with heat exchangers accounts for about 10 percent of the total investment of a power plant, so it is meaningful to optimize the geometric parameters to explore the potential that matching the cooling load of a power generating unit in the most cost effective way. The entransy dissipation equations of two typical irreversible heat transfer processes, including that the ambient air heated by heat exchangers and circulating water heated by the exhausted steam of turbine, are derived in this paper. Combined with the force balance equation of NDDCT, all parameters that may affect the performance and annual cost of a cooling system are took into consideration. Such constituted constraints are applied to the Lagrange multiplier optimization of such a system. Based on the mathematical relation and conditional extremum method, an optimization equation group aiming to obtain the minimum of total annual cost is constructed. Finally, a practical 600 MW power generating unit is taken as an example to illustrate the applications of entransy dissipation based optimization principle. The result indicates that total annual cost of the dry cooling system can drop from $6 420 643 to $5 665 660. (C) 2017 Elsevier Ltd. All rights reserved. |
| 关键词 | Large-scale dry cooling tower System optimization Entransy dissipation Annual cost |
| DOI | 10.1016/j.applthermaleng.2017.06.117 |
| 收录类别 | SCI ; SCIE |
| 语种 | 英语 |
| 资助项目 | national "973 Program" of China[2015CB251503] |
| WOS研究方向 | Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics |
| WOS类目 | Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics |
| WOS记录号 | WOS:000410011200024 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| EI入藏号 | 20172803931631 |
| EI主题词 | Cooling |
| EI分类号 | 615.4 Thermoelectric Energy - 641.2 Heat Transfer - 911.2 Industrial Economics |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/33079 |
| 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, Key Lab Condit Monitoring & Control Power Plant E, Minist Educ, 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 | Wei, Huimin,Du, Xiaoze,Yang, Lijun,et al. Entransy dissipation based optimization of a large-scale dry cooling system[J]. APPLIED THERMAL ENGINEERING,2017,125:254-265. |
| APA | Wei, Huimin,Du, Xiaoze,Yang, Lijun,&Yang, Yongping.(2017).Entransy dissipation based optimization of a large-scale dry cooling system.APPLIED THERMAL ENGINEERING,125,254-265. |
| MLA | Wei, Huimin,et al."Entransy dissipation based optimization of a large-scale dry cooling system".APPLIED THERMAL ENGINEERING 125(2017):254-265. |
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| Wei-2017-Entransy di（1951KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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