干旱区生态环境知识资源中心(Arid): The impact of vapor box location on the performance of the multiple effect distillation for seawater desalination technology

Arid

DOI	10.5004/dwt.2021.26821
	The impact of vapor box location on the performance of the multiple effect distillation for seawater desalination technology
	Abotaleb, Ahmed; Mabrouk, Abdelnasser
通讯作者	Mabrouk, A (corresponding author), Hamad Bin Khalifa Univ, Qatar Fdn, Qatar Environm & Energy Res Inst, Doha, Qatar. ; Mabrouk, A (corresponding author), Hamad Bin Khalifa Univ, Qatar Fdn, Coll Sci & Engn, Doha, Qatar.
来源期刊	DESALINATION AND WATER TREATMENT
ISSN	1944-3994
EISSN	1944-3986
出版年	2021
卷号	216 页码:1-13
英文摘要	Seawater desalination and water purification is a sustainable solution for arid areas, where the lack of natural potable water is limiting economic growth. Some of the commercial multi-effect distillation (MED) configurations are classified according to the vapor box location with reference to the evaporator tube bundle; whether it is side or back-attached. The lack of technical comparison between the two configurations motivated this work to identify the optimal vapor box location and demister orientation to minimize thermal losses and ensure uniform vapor flow to the next tube bundle. The aim of this study is to perform a computational fluid dynamics (CFD) simulation to compare between two conventional configurations namely the back vapor box (MED-BVB) and the side vapor box (MED-SVB) concerning the thermal losses and vapor flow uniformity as well as to propose internal design modifications specifically in a number of demisters and demister orientation to enhance system performance. MED evaporator of three effects with 25 m 3 /d is considered for the CFD computational domain and conducted by COMSOL multiphysics. The CFD results showed that, the conventional MED-BVB with one horizontal demister has 49% better vapor uniformity compared to the conventional MED-SVB with three horizontal demisters. However, the modified MED-SVB with three inclined demisters has 45% better vapor uniformity compared to the modified MED-BVB with one inclined demister due to the less swirl flow in the vapor box. Moreover, it was concluded that the modified MED-BVB has a better vapor uniformity and slightly lower thermal loss compared to conventional MED-SVB. Generally, inclining the demister showed better uniform vapor flow in both configurations. On the other hand, the MED-BVB has a 45% lower footprint compared to the MED-SVB. Preference between the two studied configurations would be subjected to the compromise between operational challenges (in case of uneven vapor flow, some tubes would be exposed to a higher amount of vapor flow rate than the design value and accordingly will become overheated) and footprint.
英文关键词	Desalination MED Thermal losses CFD Vapor Route Vapor uniformity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000651072000001
WOS关键词	CFD ANALYSIS ; THERMAL LOSSES ; EVAPORATION ; UNIFORMITY ; DESIGN
WOS类目	Engineering, Chemical ; Water Resources
WOS研究方向	Engineering ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349937
作者单位	[Abotaleb, Ahmed; Mabrouk, Abdelnasser] Hamad Bin Khalifa Univ, Qatar Fdn, Qatar Environm & Energy Res Inst, Doha, Qatar; [Mabrouk, Abdelnasser] Hamad Bin Khalifa Univ, Qatar Fdn, Coll Sci & Engn, Doha, Qatar
推荐引用方式 GB/T 7714	Abotaleb, Ahmed,Mabrouk, Abdelnasser. The impact of vapor box location on the performance of the multiple effect distillation for seawater desalination technology[J],2021,216:1-13.
APA	Abotaleb, Ahmed,&Mabrouk, Abdelnasser.(2021).The impact of vapor box location on the performance of the multiple effect distillation for seawater desalination technology.DESALINATION AND WATER TREATMENT,216,1-13.
MLA	Abotaleb, Ahmed,et al."The impact of vapor box location on the performance of the multiple effect distillation for seawater desalination technology".DESALINATION AND WATER TREATMENT 216(2021):1-13.