Optimization of parallel/cross flow multi-effect desalination system with flue gas pre-heating considering thermo-vapor compression coupling

doi:10.1016/j.desal.2021.114998

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	Optimization of parallel/cross flow multi-effect desalination system with flue gas pre-heating considering thermo-vapor compression coupling
	Xue, Yuan 2,3; Du, Xiaoze 1; Yang, Lijun 3
刊名	Desalination
	2021-06-15
卷号	506
关键词	Cost benefit analysis Desalination Distillation Economic analysis Energy utilization Flue gases Investments Parallel flow Temperature Effects of temperature Low-temperature multi-effect distillations Multi-effect desalination Objective functions Thermal power generating units Vapor compression Water production Water production cost
ISSN号	0011-9164
DOI	10.1016/j.desal.2021.114998
英文摘要	To reduce the energy consumption of low-temperature multi-effect distillation (LT-MED), a new scheme was proposed by combining the thermo-vapor compression (TVC) and utilizing the low-grade heat of flue gas in the thermal power generating unit for feed brine preheating. For further improvement, the concept of the mass fraction is especially proposed and considered. Taking the gained output ratio (GOR) and water production cost as the objective functions, the effects of temperature difference, TVC positions were investigated by thermodynamic and economic analysis. The optimal effect number was selected for the LT-MED system under the lowest investment. The results indicated that GOR increased and the water production cost decreased with the backward movement of TVC. The lowest water production cost was obtained under the conditions that N = 5 and TVC was at the 4th effect with the mass fraction Rmf is 0. Thermodynamic, economic, and exergy analysis was performed on the selected systems and the control group. It was concluded that the new proposed system was superior to the others in both the water production and the water production cost. GOR increased from 9.67 to 10.94 and the water production cost fell from 3.13 $/m3 to 2.84 $/m3. © 2021 Elsevier B.V.
WOS研究方向	Engineering ; Water Resources
语种	英语
出版者	Elsevier B.V.
WOS记录号	WOS:000632988000007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147736]
专题	兰州理工大学
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Mechatronic Engineering, Xi'an Technological University, Xi'an; 710021, China; 3.Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (North China Electric Power University), Ministry of Education, Beijing; 102206, China
推荐引用方式 GB/T 7714	Xue, Yuan,Du, Xiaoze,Yang, Lijun. Optimization of parallel/cross flow multi-effect desalination system with flue gas pre-heating considering thermo-vapor compression coupling[J]. Desalination,2021,506.
APA	Xue, Yuan,Du, Xiaoze,&Yang, Lijun.(2021).Optimization of parallel/cross flow multi-effect desalination system with flue gas pre-heating considering thermo-vapor compression coupling.Desalination,506.
MLA	Xue, Yuan,et al."Optimization of parallel/cross flow multi-effect desalination system with flue gas pre-heating considering thermo-vapor compression coupling".Desalination 506(2021).