Abstract In the recent years, considering aridity problem of the country and high potential of desalinating the seawater in the southern and northern coasts, focusing on the poly-generation cycles of power and distillate with the lowest possible cost and emission of the pollutants has been increased. In this research, the study of the trigeneration system of power, heat and desal water located in the Qeshm island has been conducted. The potentials of the existing unit have been evaluated and the different scenarios have been proposed to improve the performance of the system. Setting the inlet air cooling system up to the gas cycle is one of the schemes proposed to diminish the undesirable effects of the ambient conditions. Also integrating the existing MED desalination unit with RO system and using solar thermal collector field in order to improve the performance of the system and to propose the optimal scheme for the operating unit has been investigated. The conventional and the advanced exergy, exergo-economic and exergo-environmental analyzes based on life cycle assessment have been used to evaluate the existing and the proposed systems. The multi objective optimization process has been performed to maximize the exergetic efficiency and to minimize the cost and environmental impact of the product of the system. Considering the complexity of the problem, using the genetic programming to generate the objective functions has been conducted. In order to apply the optimization process on the existing and the proposed system, multi objective genetic algorithm (MOGA) and multi objective water cycle algorithm (MOWCA) have been used. Multi objective water cycle algorithm has been performed for the first time at the energy problems in this research. The results shows that using the inlet air cooling system has decreased the fuel consumption, total costs and environmental impacts of the system by 1019 tons/year, 914 k$/year and 197 kpts/year, respectively. Also integrating the existing unit with the solar thermal collector field to achieve an increase of 4.77% in efficiency of the system has been investigated. Five different types of STC at two configurations have been evaluated and the thermodynamic, economic and environmental optimal solution has led to calculate 9081 m2 area of required collectors. Using RO desalination unit in the downstream of MED has prevented the energy leakage and increased the distillate production rate by 255.12 tons/h. The optimization processes using two methods shows the capability of the MOWCA and lead to an increase of 12.66% in exergetic efficiency and decreased the total cost and environmental impact rate of the system by 47.4$/h and 49.2pts/h, respectively.

中文翻译：

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基于燃气轮机-吸收式冷水机-太阳能抛物线槽收集器装置与多效海水淡化-热蒸汽压缩机-反渗透海水淡化系统集成的多联产系统的优化发电、发电经济和发电环境设计

摘要 近年来，考虑到国家干旱问题和南、北沿海海水淡化潜力大，以尽可能降低成本和污染物排放的动力和馏分油多联产循环为重点。 . 在这项研究中，对位于格什姆岛的电力、热力和淡化水三联产系统进行了研究。对现有单元的潜力进行了评估，并提出了不同的方案，以提高系统的性能。将进气冷却系统设置为气体循环是为减少环境条件的不良影响而提出的方案之一。还研究了将现有的 MED 海水淡化装置与 RO 系统相结合并使用太阳能集热器场，以提高系统性能并提出运行装置的优化方案。基于生命周期评估的传统和先进的火用、火用经济和火用环境分析已被用于评估现有和拟建的系统。已执行多目标优化过程以最大限度地提高火用效率并最大限度地降低系统产品的成本和环境影响。考虑到问题的复杂性，采用遗传规划生成目标函数。为了将优化过程应用于现有的和提议的系统，已使用多目标遗传算法（MOGA）和多目标水循环算法（MOWCA）。本研究首次针对能源问题进行了多目标水循环算法。结果表明，使用进气冷却系统后，该系统的燃料消耗、总成本和环境影响分别减少了 1019 吨/年、914 k$/年和 197 kpts/年。还研究了将现有单元与太阳能集热器领域集成，以实现系统效率提高 4.77%。对两种配置的五种不同类型的 STC 进行了评估，热力学、经济和环境最佳解决方案导致计算出所需集热器的面积为 9081 平方米。在MED下游采用RO脱盐装置，防止了能量泄漏，提高了馏出液产量255.12吨/小时。使用两种方法的优化过程显示了 MOWCA 的能力，使火用效率提高了 12.66%，使系统的总成本和环境影响率分别降低了 47.4$/h 和 49.2pts/h。