Multi-objective thermo-economic optimization of Collins cycle

被引：11
作者：
Chen, Shuhang [1 ]
Liu, Dongli [2 ,3 ]
Li, Sizhuo [1 ]
Gan, Zhihua [1 ,4 ]
Qiu, Min [2 ,3 ]
机构：
[1] Zhejiang Univ, Inst Refrigerat & Cryogen, Key Lab Refrigerat & Cryogen Technol Zhejiang Pro, Hangzhou 310027, Zhejiang, Peoples R China
[2] Inst Adv Technol, Westlake Inst Adv Study, Hangzhou 310024, Zhejiang, Peoples R China
[3] Westlake Univ, Sch Engn, Key Lab 3D Micro Nano Fabricat & Characterizat Zh, Hangzhou 310024, Zhejiang, Peoples R China
[4] Zhejiang Univ City Coll, Cryogen Ctr, Hangzhou 310015, Zhejiang, Peoples R China
来源：
ENERGY | 2022年 / 239卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Collins cycle; Helium cryo-plant; Multi-objective optimization; Total annual cost; Exergeticefficiency; THERMODYNAMIC ANALYSIS; GENETIC ALGORITHM; HEAT; SYSTEM; PERFORMANCE; DESIGN; POWER; SOLAR;
D O I：
10.1016/j.energy.2021.122269
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Many large scientific projects are emerging worldwide with the development of high energy physics nowadays. The indispensable subsystem, helium cryo-plants for such projects require extremely high energy consumption and total annual cost (TAC). In order to reduce energy consumption and TAC, multi-objective thermo-economic optimization that adopted non-dominated sorting genetic algorithm-II (NSGA-II) for helium cryo-plants is proposed in this work. As a typical helium liquefaction cycle, Collins cycle is selected as the optimization object. Both the exergetic efficiency (eta(Ex)) and the TAC are set as objective parameters. The decision parameters, which include discharge pressure of compressor, flow fraction of expanders and effectiveness of heat exchangers, are optimized simultaneously. Linear programming technology of multidimensional analysis preference (LINMAP) is utilized as an example to select the optimal solution from the multi-objective optimization results. Compared to the maximum eta(Ex) result, the LINMAP result reduces the TAC by 23.95% at the cost of 9.03% reduction in eta(Ex). In the proposed approach, eight decision parameters can be optimized simultaneously and the designed cryo-plant considers both economic and thermodynamic criteria, which is feasible for practical engineering project. Besides, alternative solution under limited investment situation is provided. (C) 2021 Elsevier Ltd. All rights reserved.
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页数：12
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