Influences of area ratio and surface roughness on homogeneous condensation in ejector primary nozzle

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	Influences of area ratio and surface roughness on homogeneous condensation in ejector primary nozzle
	Zhang, Hailun ; Wang L(王雷); Wang C(王辰); Zou T(邹涛)
刊名	ENERGY CONVERSION AND MANAGEMENT
	2017
卷号	149 页码:168-174
关键词	Ejector primary nozzle Area ratio Surface roughness Homogeneous condensation
ISSN号	0196-8904
通讯作者	Wang L(王雷) ; Zou T(邹涛)
产权排序	2
中文摘要	Homogeneous condensation inside the ejector has been ignored by numerous researchers. In this paper, the wet steam model was utilized to study the influences of nozzle area ratio and surface roughness on homogeneous condensation in a primary nozzle. A substantial amount of latent heat is released during the homogeneous condensation process to increase static pressure and reduce Mach number. The increase of nozzle area ratio reduces condensation intensity and lowers nozzle pressure but increases liquid mass fraction. Furthermore, with the growth of surface roughness, the slightly increased dryness fraction is almost ineffective for alleviating erosion caused by tiny droplets; the slight decrease in mass flow. rate will reduce ejector performance to some extent, while the sharp increase of entropy generation results in more energy wastes. Therefore, nozzle area ratio and surface roughness should be carefully designed to alleviate potential condensation and enhance ejector performance at the same time. (C) 2017 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Thermodynamics ; Energy & Fuels ; Mechanics
研究领域[WOS]	Thermodynamics ; Energy & Fuels ; Mechanics
关键词[WOS]	WET STEAM FLOW ; REFRIGERATION SYSTEM ; NONEQUILIBRIUM CONDENSATION ; ENTROPY GENERATION ; HEAT-TRANSFER ; THERMO-COMPRESSOR ; WATER-VAPOR ; PERFORMANCE ; PRESSURE ; R134A
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000411537200014
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/21090]
专题	沈阳自动化研究所_工业控制网络与系统研究室
作者单位	1.School of Control Science and Engineering, Shandong University, Jinan, 250061, China 2.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
推荐引用方式 GB/T 7714	Zhang, Hailun,Wang L,Wang C,et al. Influences of area ratio and surface roughness on homogeneous condensation in ejector primary nozzle[J]. ENERGY CONVERSION AND MANAGEMENT,2017,149:168-174.
APA	Zhang, Hailun,Wang L,Wang C,&Zou T.(2017).Influences of area ratio and surface roughness on homogeneous condensation in ejector primary nozzle.ENERGY CONVERSION AND MANAGEMENT,149,168-174.
MLA	Zhang, Hailun,et al."Influences of area ratio and surface roughness on homogeneous condensation in ejector primary nozzle".ENERGY CONVERSION AND MANAGEMENT 149(2017):168-174.