Anti-freezing of natural draft dry cooling system of power generation by water re-distribution during winter

doi:10.1016/j.ijheatmasstransfer.2019.119194

	Anti-freezing of natural draft dry cooling system of power generation by water re-distribution during winter
	Wei, Huimin 1; Yang, Xiaoru 1; Ge, Zhihua 1; Yang, Lijun 1; Du, Xiaoze 2
	2020-03
发表期刊	International Journal of Heat and Mass Transfer
ISSN	00179310
卷号	149
摘要	The freezing risk of heat exchangers of the natural draft dry cooling system (NDDCs) in winter has great threaten on the safe and efficient operation of thermal power generating unit. This study concentrated on the potential of waterside re-distribution to relieve the adverse weather effects during winter. Based on the requirements of the thermal cycle and cooling system, a global control anti-freezing method with water flow distribution for NDDCs under crosswinds during winter was proposed. Taking the operation cost as the objective function, the Lagrange multiplier method combined with the so-called entransy dissipation analysis was employed to obtain the optimal results. A 660 MW supercritical coal-fired power generating unit was taken as an example to show the applications. The results indicated that energy saving potential of cooling water re-distributions increased with ambient natural wind, but also with the increase of total costs during hasher freezing environment. The saved consumption cost of coal would cover the growth of pump power. Compared with the previous research, the maximum savings of operation cost can reach 1.11 g/kWh after optimization. © 2019
关键词	Cooling Cooling systems Cooling water Energy conservation Flow of water Freezing Lagrange multipliers Operating costs Thermoelectric equipment Anti-freezing Dry cooling systems Energy saving potential Entransy dissipation Freezing environment Lagrange multiplier method Thermal power generating units Waterside adjustments
DOI	10.1016/j.ijheatmasstransfer.2019.119194
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS记录号	WOS:000538009600058
出版者	Elsevier Ltd
EI入藏号	20195107878628
EI主题词	Cost benefit analysis
EI分类号	525.2 Energy Conservation - 615.4 Thermoelectric Energy - 631.1.1 Liquid Dynamics - 641.2 Heat Transfer - 911 Cost and Value Engineering ; Industrial Economics
来源库	Compendex
分类代码	525.2 Energy Conservation - 615.4 Thermoelectric Energy - 631.1.1 Liquid Dynamics - 641.2 Heat Transfer - 911 Cost and Value Engineering; Industrial Economics
引用统计	被引频次：8[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/115374
专题	兰州理工大学能源与动力工程学院新能源学院
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, 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,Yang, Xiaoru,Ge, Zhihua,et al. Anti-freezing of natural draft dry cooling system of power generation by water re-distribution during winter[J]. International Journal of Heat and Mass Transfer,2020,149.
APA	Wei, Huimin,Yang, Xiaoru,Ge, Zhihua,Yang, Lijun,&Du, Xiaoze.(2020).Anti-freezing of natural draft dry cooling system of power generation by water re-distribution during winter.International Journal of Heat and Mass Transfer,149.
MLA	Wei, Huimin,et al."Anti-freezing of natural draft dry cooling system of power generation by water re-distribution during winter".International Journal of Heat and Mass Transfer 149(2020).