Optimization design of cogeneration of power and fresh water by desalination considering fresh water demand

doi:10.3969/j.issn.0438-1157.2013.08.032

CIESC Journal ›› 2013, Vol. 64 ›› Issue (8): 2924-2929.DOI: 10.3969/j.issn.0438-1157.2013.08.032

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Optimization design of cogeneration of power and fresh water by desalination considering fresh water demand

WU Lianying, HU Yangdong, GAO Congjie

School of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, Shandong, China

Received:2012-12-09 Revised:2013-03-19 Online:2013-08-05 Published:2013-08-05
Supported by:
supported by the National Natural Science Foundation of China(21076202).

考虑水需求的水电联产海水淡化系统的优化设计

伍联营, 胡仰栋, 高从堦

中国海洋大学化学化工学院, 山东青岛 266100

通讯作者: 伍联营(1971- ),男,副教授。
作者简介:伍联营(1971- ),男,副教授。
基金资助:
国家自然科学基金项目(21076202).

Abstract

Abstract: Cogeneration of power and fresh water could not only resolve fresh water shortage,but also reduce energy consumption of desalination.A detailed mathematical model of the cogeneration of fresh water and power was established and described as an MINLP problem,which was solved by hybrid-coded genetic algorithm.The result showed that when fresh water demand was the prime target,the optimal pattern of the cogeneration system was integration of power plant,multi-stage flash and reverse osmosis,in which back pressure steam turbine was used in power plant.There was an optimal value of the production ratio for MSF and RO in the integrated system.The water cost of the integrated system and the production ratio for MSF and RO decreased slowly with increase of fresh water demand.

Key words: cogeneration of power and fresh water, desalination, genetic algorithm, optimization design

摘要： 水电联产不仅能缓解淡水资源不足的问题,而且可有效降低能耗和淡化成本。建立了水电联产系统数学模型,将优化设计描述为一个混合整数非线性规划(MINLP)问题,并采用混合编码的遗传算法进行求解,结果表明,以水定电模式下水电联产系统最优操作模式为发电、多级闪蒸(MSF)和反渗透(RO)三者的集成,且MSF和RO的产水比存在最优值,发电采用背压式蒸汽轮机。随着淡水需求量的增加,联产系统的淡水成本逐渐降低,MSF与RO的产水比呈现出逐渐降低的趋势。

关键词: 水电联产, 海水淡化, 遗传算法, 优化设计

CLC Number:

WU Lianying, HU Yangdong, GAO Congjie. Optimization design of cogeneration of power and fresh water by desalination considering fresh water demand[J]. CIESC Journal, 2013, 64(8): 2924-2929.

伍联营, 胡仰栋, 高从堦. 考虑水需求的水电联产海水淡化系统的优化设计[J]. 化工学报, 2013, 64(8): 2924-2929.

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Optimization design of cogeneration of power and fresh water by desalination considering fresh water demand

考虑水需求的水电联产海水淡化系统的优化设计

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