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Three-objective optimization of a novel triple-effect absorption heat transformer combined with a water desalination system

机译:新型三效吸收式热转换器与水淡化系统的三目标优化

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A novel triple-effect absorption heat transformer is proposed and compared with a most studied configuration of triple-effect absorption heat transformer and a Modified form of it from the viewpoint of exergoeconomics. All systems are integrated with water desalination system to produced distilled water. Sensitivity analyses are performed to identify the influence on the systems' performance of such decision parameters as the temperatures of evaporator, condenser, absorber and absorbing evaporators for all the configurations. Then a three-objective optimization is accomplished to specify the optimal design points for the purpose of minimizing the product unit cost and maximizing the exergy coefficient of performance as well as the distilled water mass flow rate. In this regard, the Pareto frontiers are plotted for all the systems. The results show that, under the optimized conditions, the exergy coefficient of performance and distilled water mass flow rate for the proposed configuration can be higher by 16% and 38% with respect to the corresponding values in the other two systems. In addition, it is observed that the maximum gross temperature lift in the proposed system is about 20-40% higher than those in the other systems. (C) 2017 Elsevier Ltd. All rights reserved.
机译:提出了一种新型的三效吸收式换热器,并从能效经济学的角度将其与研究最多的三效吸收式换热器及其改进形式进行了比较。所有系统都与脱盐系统集成在一起以生产蒸馏水。进行灵敏度分析,以确定所有配置的决策参数(如蒸发器,冷凝器,吸收器和吸收式蒸发器的温度)对系统性能的影响。然后,实现了一个三目标优化,以指定最佳设计点,以最大程度地降低产品单位成本,最大化性能的火用系数以及蒸馏水的质量流量。在这方面,绘制了所有系统的帕累托边界。结果表明,在最佳条件下,与其他两个系统中的相应值相比,所提出的配置的性能(火用)系数和蒸馏水质量流量可以分别高出16%和38%。另外,观察到,所提出的系统中的最大总温度升高比其他系统中的最高总升高约20-40%。 (C)2017 Elsevier Ltd.保留所有权利。

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