车载有机朗肯循环系统的热经济优化  

Thermo-economic Optimization of On-board Organic Rankine Cycle System

作　　者：张宁 林灵 张凯涛 汪晓烽 叶松 吴夏来 ZHANG Ning;LIN Ling;ZHANG Kaitao;WANG Xiaofeng;YE Song;WU Xialai(Huzhou Key Laboratory of Intelligent Sensing and Optimal Control for Industrial Systems,School of Engineering,Huzhou University,Huzhou 313000,China;Nanchang Mingfeng Environmental Protection Technology Co.,Ltd.,Nanchang 330029,China;Jiangxi Eco-Environmental Research and Planning Institute,Nanchang 330039,China)

机构地区：[1]湖州师范学院工学院,湖州市工业系统智能感知与优化控制重点实验室,浙江湖州313000 [2]南昌明丰环保技术有限公司,江西南昌330029 [3]江西省生态环境科学研究与规划院,江西南昌330039

出　　处：《湖州师范学院学报》2023年第2期31-38,共8页Journal of Huzhou University

基　　金：浙江省自然科学基金项目(LQ21F030007);湖州市自然科学基金项目(2021YZ05);湖州师范学院大学生创新创业项目(202101232).

摘　　要：有机朗肯循环(ORC)因其结构简单和循环效率高等特点,在车辆发动机尾气余热的回收上具有较大的应用前景.但ORC的安装除了增加成本外,还会增加车辆的重量和发动机排气的背压.因此,综合考虑重量、背压等负面影响,以及车辆发动机的多工况特性,以单位投资成本(SIC)为优化目标,提出一种车载ORC的热经济优化设计方法,并将该方法的优化结果与只考虑最佳尾气工况的优化结果进行比较.结果表明,车载ORC系统在不同发动机尾气工况下的平均SIC为1 418.4■/kW,经济性较好;本方法的优化结果鲁棒性更好,更适合对车辆发动机的尾气余热进行回收.该研究结果具有重要的理论意义和应用价值.The organic Rankine cycle(ORC)has great application prospects in the waste heat recov­ery from vehicle engine exhaust for its simple structure and high cycle efficiency.However*the installa­tion of ORC not only increases the cost,but also increases the weight of the vehicle and the back pres­sure of the engine exhaust.Therefore,in order to design a cost-effective on-board ORC.a thermal-economic optimization design method with the specific investment cost(SIC)as objective is proposed in this paper by comprehensively considering the negative effects of weight,back pressure and the multi-working condition characteristics of the vehicle engine.The optimization result shows that the average SIC of the on-board ORC system under different engine exhaust conditions is 1418.4€/k\V.This indi­cates that the result of the design is economical.In addition,the optimization results of this method are compared with the optimization results that only considers the optimal exhaust gas condition of the en­gine.The comparison results show that the optimization result of the proposed method has better ro­bustness and is more suitable for the recovery of exhaust heat from vehicle engine under multiple operat­ing conditions,which has important theoretical research significance and application value.

关 键 词：有机朗肯循环 热经济优化 单位投资成本 

分 类 号：U471[机械工程—车辆工程]