Performance Study and Multi-Objective Optimization of a Two-Temperature CO2 Refrigeration System with Economizer Based on Energetic, Exergetic and Economic Analysis

LIU Guangdi, ZHAO Hongxia, WANG Zheng, ABDULWAHID Alhasan Ali, HAN Jitian

热科学学报 ›› 2022, Vol. 31 ›› Issue (5) : 1416-1433.

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热科学学报 ›› 2022, Vol. 31 ›› Issue (5) : 1416-1433. DOI: 10.1007/s11630-022-1696-4  CSTR: 32141.14.JTS-022-1696-4
工程热力学

Performance Study and Multi-Objective Optimization of a Two-Temperature CO2 Refrigeration System with Economizer Based on Energetic, Exergetic and Economic Analysis

  • LIU Guangdi, ZHAO Hongxia*, WANG Zheng, ABDULWAHID Alhasan Ali, HAN Jitian
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Performance Study and Multi-Objective Optimization of a Two-Temperature CO2 Refrigeration System with Economizer Based on Energetic, Exergetic and Economic Analysis

  • LIU Guangdi, ZHAO Hongxia*, WANG Zheng, ABDULWAHID Alhasan Ali, HAN Jitian
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摘要

在能耗、(火用)和经济性分析的基础上,提出了一种带经济器的双温 CO2制冷系统,并与传统的双温 CO2制冷系统进行了比较。采用遗传算法多目标优化方法,以 COP、(火用)损失和总经济成本为目标函数,寻找两个系统的最佳设计条件。得到了不同环境温度下的Pareto前沿。采用与理想解决策方法相似的顺序优先技术确定最优状态点。仿真结果表明,在不同环境温度下,引入经济器可以提高双温 CO2制冷系统的 COP、降低火用损失和总经济成本。此外,经济分析还考虑了二氧化碳排放成本和电价的影响。结果表明,随着 CO2排放成本和电价的增加,两种制冷系统的小时经济成本都在增加,但带经济器的双温 CO2制冷系统的小时经济成本始终低于传统的双温 CO2制冷系统。

Abstract

A two temperature CO2 refrigeration system with economizer is proposed and compared with the traditional dual-temperature CO2 refrigeration system based on energy consumption, exergy and economic analysis. Using genetic algorithm multi-objective optimization method, taking the COP, exergy loss and total economic cost as the objective functions to find the best design conditions of the two systems. The Pareto fronts are obtained at different ambient temperatures. Technique for order preference by similarity to an ideal solution decision-making method is adopted to determine the optimum state points. The simulation results show that when operating at different ambient temperatures, the introduction of economizer can improve COP, reduce exergy loss and the overall economic cost rate of the two-temperature CO2 refrigeration system. In addition, economic analyses take the impact of carbon dioxide emission cost and electricity price into consideration. The results indicate that with the increase of CO2 emission cost and electricity price, the hourly economic cost of both systems increases, but the hourly economic cost of the two-temperature CO2 refrigeration system with economizer system is always lower than that of conventional two-temperature CO2 refrigeration system.

关键词

two-temperature refrigeration / CO2 / multi-objective optimization / energy / exergetic / economic cost

Key words

two-temperature refrigeration / CO2 / multi-objective optimization / energy / exergetic / economic cost

引用本文

导出引用
LIU Guangdi, ZHAO Hongxia, WANG Zheng, ABDULWAHID Alhasan Ali, HAN Jitian. Performance Study and Multi-Objective Optimization of a Two-Temperature CO2 Refrigeration System with Economizer Based on Energetic, Exergetic and Economic Analysis[J]. 热科学学报, 2022, 31(5): 1416-1433 https://doi.org/10.1007/s11630-022-1696-4
LIU Guangdi, ZHAO Hongxia, WANG Zheng, ABDULWAHID Alhasan Ali, HAN Jitian. Performance Study and Multi-Objective Optimization of a Two-Temperature CO2 Refrigeration System with Economizer Based on Energetic, Exergetic and Economic Analysis[J]. Journal of Thermal Science, 2022, 31(5): 1416-1433 https://doi.org/10.1007/s11630-022-1696-4

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基金

This work is supported by the National Natural Science Foundation of China (Grant No. 51776110).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2022
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