Energy and exergo-economic analysis of a parallel feed multi-effect system integrated with humidification–dehumidification system for brine recovery

IF 4 4区环境科学与生态学 Q2 ENVIRONMENTAL STUDIES

Energy & Environment Pub Date : 2023-10-03 DOI:10.1177/0958305x231204034

Osman Shamet, Bilal A. Qureshi, Mohamed Antar

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引用次数: 0

Abstract

Desalination technologies reject large amounts of brine with significant value back to sea. The concept of hybridization of different desalination technologies has proven that it can be effective in terms of reducing rejected brine and increasing the freshwater production rate as well as reducing the freshwater cost. In this work, brine recovery to improve water production through a simple modified configuration of integrating a multi-effect desalination (MED) system with humidification–dehumidification system (HDH). The rejected brine of the MED system is used as the feed for the HDH system without the need for preheating the rejected brine since it leaves the MED at a suitable temperature for HDH application. The study focuses on investigating the effect of different operating conditions on the increase in system freshwater production rate and recovery ratio as well as the exergetic efficiency. Parameters investigated include steam temperature, feed salinity, number of brine streams, cooling water flow rate, and ambient temperature. An exergo-economic analysis has also been conducted using the cost flow method to evaluate the freshwater production cost for the modified system. Results indicate that the integration of HDH can increase the water production rate by a maximum of 7.82% and produce fresh water at 2.08 $/m 3 compared to 2.094 $/m 3 when using the standalone system under the same conditions.

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盐水回收加湿-除湿并联进料多效系统的能量与消耗经济分析

海水淡化技术可以将大量有重要价值的盐水排入大海。不同海水淡化技术的杂交概念已经证明，它可以有效地减少废盐，提高淡水产量，降低淡水成本。在这项工作中，通过将多效海水淡化(MED)系统与加湿-除湿系统(HDH)集成的简单修改配置，盐水回收来提高产水量。MED系统的废弃盐水用作HDH系统的进料，不需要预热，因为它可以在适合HDH应用的温度下离开MED。研究了不同操作条件对提高系统淡水产量、采收率和火用效率的影响。研究的参数包括蒸汽温度、进料盐度、盐水流数量、冷却水流量和环境温度。运用成本流法对改造后系统的淡水生产成本进行了努力-经济分析。结果表明，在相同条件下，与独立系统相比，集成HDH系统可最大提高产水量7.82%，产水量为2.08美元/立方米，淡水产量为2.094美元/立方米。

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来源期刊

Energy & Environment ENVIRONMENTAL STUDIES-

CiteScore

7.60

自引率

7.10%

发文量

157

期刊介绍： Energy & Environment is an interdisciplinary journal inviting energy policy analysts, natural scientists and engineers, as well as lawyers and economists to contribute to mutual understanding and learning, believing that better communication between experts will enhance the quality of policy, advance social well-being and help to reduce conflict. The journal encourages dialogue between the social sciences as energy demand and supply are observed and analysed with reference to politics of policy-making and implementation. The rapidly evolving social and environmental impacts of energy supply, transport, production and use at all levels require contribution from many disciplines if policy is to be effective. In particular E & E invite contributions from the study of policy delivery, ultimately more important than policy formation. The geopolitics of energy are also important, as are the impacts of environmental regulations and advancing technologies on national and local politics, and even global energy politics. Energy & Environment is a forum for constructive, professional information sharing, as well as debate across disciplines and professions, including the financial sector. Mathematical articles are outside the scope of Energy & Environment. The broader policy implications of submitted research should be addressed and environmental implications, not just emission quantities, be discussed with reference to scientific assumptions. This applies especially to technical papers based on arguments suggested by other disciplines, funding bodies or directly by policy-makers.