干旱区生态环境知识资源中心(Arid): Effect mechanism of exit-water temperature distribution characteristics on the anti-freezing of natural draft dry cooling tower

Arid

DOI	10.1016/j.applthermaleng.2019.114078
	Effect mechanism of exit-water temperature distribution characteristics on the anti-freezing of natural draft dry cooling tower
	Li Wendong 1; Wang Huitao 2; Wang Jian 3; Duan Chongpeng 1; Zhao Yuanbin 1
通讯作者	Zhao Yuanbin
来源期刊	APPLIED THERMAL ENGINEERING
ISSN	1359-4311
出版年	2019
卷号	161
英文摘要	For thermal power plants with natural draft dry cooling towers (NDDCTs) in arid and severely cold regions, the anti-freezing of finned-tube bundles is critical for the safe and economic running of a thermodynamic system. Using volume source term models representing the water flow in each pass of a cooling column, a 3D numerical model for NDDCT was established and validated. The exit water temperature and its relevant distribution characteristics could then be analyzed from cooling columns, deltas to the whole tower. Based on the analyses, the non-equilibrium temperature difference and relevant anti-freezing parameters were defined. It could be observed that the ambient crosswind, ambient temperature, heat load, circulating water flow rate, and convection pattern have different impact mechanisms on the exit water temperature distribution characteristics, among which, the ambient crosswind plays a major role but the ambient temperature has a negligible effect. Finally, the critical anti-freezing average exit-water temperatures were presented based on real work conditions, which would facilitate the safe and economic operation of NDDCTs in severely cold weather.
英文关键词	Dry cooling tower Anti-freezing Non-equilibrium temperature difference Numerical simulation
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000488887200040
WOS关键词	VERTICAL DELTA RADIATORS ; COOLED HEAT-EXCHANGER ; PERFORMANCE ; WIND ; CROSSWIND ; SYSTEM ; PREDICTION ; EFFICIENCY ; PLANT
WOS类目	Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214285
作者单位	1.Shandong Univ, Sch Energy Source & Power Engn, Jinan 250061, Shandong, Peoples R China; 2.Shandong Univ, Res Ctr Geotech & Struct Engn, Jinan 250061, Shandong, Peoples R China; 3.ShanDong JiaoTong Univ, Sci Coll, Jinan 250061, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Li Wendong,Wang Huitao,Wang Jian,et al. Effect mechanism of exit-water temperature distribution characteristics on the anti-freezing of natural draft dry cooling tower[J],2019,161.
APA	Li Wendong,Wang Huitao,Wang Jian,Duan Chongpeng,&Zhao Yuanbin.(2019).Effect mechanism of exit-water temperature distribution characteristics on the anti-freezing of natural draft dry cooling tower.APPLIED THERMAL ENGINEERING,161.
MLA	Li Wendong,et al."Effect mechanism of exit-water temperature distribution characteristics on the anti-freezing of natural draft dry cooling tower".APPLIED THERMAL ENGINEERING 161(2019).