可再生能源2025，Vol.43Issue(10)：1321-1330,10.
基于EWM-TOPSIS的回热有机朗肯循环系统热经济性分析及多目标优化
Analysis and multi-objective optimization of the thermoeconomic performance of regenerative organic Rankine cycle systems based on EWM-TOPSIS
摘要
Abstract
To effectively utilize the waste heat discharged from the expander and improve the performance of the Organic Rankine Cycle(ORC)system,an ORC system with internal regeneration(Internal Regenerative Organic Rankine Cycle,IORC)was constructed.A detailed analysis of the Internal Heat Exchanger(IHE)was conducted to study its effectiveness,quantify its enhancement effects,and determine suitable application scenarios.The impacts of heat source temperature,outlet constraints,corrosion of the cold and heat sources,and different fluid types on the system were analyzed.Multi-objective evaluation criteria were established for net output power(Wnet),thermal efficiency(ηth),and specific investment cost(SIC),and the system was optimized using a comprehensive evaluation method combining the Non-dominated Sorting Genetic Algorithm(NSGA-Ⅱ)and the Entropy Weight-ideal Solution Distance Method(EWM-TOPSIS).The results show that the IORC is more suitable for scenarios with high heat source temperatures,heat source outlet constraints,and corrosive cold and heat sources,as it can effectively reduce costs.When the heat source temperature is 170℃,adding an IHE reduces the SIC by 1.68％.For heat sources with outlet restrictions,the SIC is reduced by 3.30％,and for corrosive cold and heat source fluids,the SIC is reduced by 2.08％.Additionally,the applicable temperature range for the IHE can be expanded.After optimization,compared to the ORC,the Wnet and ηth of the IORC increased by 0.78％and 7.66％,respectively,while the SIC decreased by 1.13％.关键词
ORC/回热ORC/内回热器/比投资成本/多目标优化Key words
ORC/regenerative ORC/internal heat exchanger/specific investment cost/multi-objective optimization分类
能源科技引用本文复制引用
戴文智,张海兴,沈雄健,杨新乐..基于EWM-TOPSIS的回热有机朗肯循环系统热经济性分析及多目标优化[J].可再生能源,2025,43(10):1321-1330,10.基金项目
国家自然科学基金(12302374,12202165,51774161) （12302374,12202165,51774161）
国家自然科学基金联合基金资助项目(U1810119) （U1810119）
辽宁省教育厅基金资助项目(LJKMZ20220685). （LJKMZ20220685）
