回收船舶柴油机余热的双回路有机朗肯循环系统性能分析  

Performance Analysis of Dual Loop Organic Rankine Cycle System for Waste Heat Recovery of Marine Diesel Engine

作　　者：吕龙 陈武[1] 阚安康 张远[1] 乔继潘 LYU Long;CHEN Wu;KAN Ankang;ZHANG Yuan;QIAO Jipan(Merchant Marine College,Shanghai Maritime University,Shanghai 201306,China;National Engineering Research Center of Ship and Shipping Control System,Shanghai 200135,China;Marine Engine College,Jiangsu Maritime Institute,Nanjing 211170,China)

机构地区：[1]上海海事大学商船学院,上海201306 [2]船舶运输控制系统国家工程研究中心,上海200135 [3]江苏海事职业技术学院机电学院,南京211170

出　　处：《船舶工程》2024年第5期68-76,共9页Ship Engineering

基　　金：江苏海事职业技术学院科技创新基金项目(2022kjcx-03);千帆新锐项目(2020QFXR-01);福建省自然科学基金项目(2022J011110);船舶运输控制系统国家工程研究中心开放课题(H20230322)。

摘　　要：为了降低船舶二氧化碳排放,利用双回路有机朗肯循环(DORC)系统对船舶柴油机的排烟和缸套冷却水余热进行回收发电。通过夹点温差法构建热力学模型,高温回路用于回收排烟热量,低温回路用于回收缸套冷却水热量和高温回路冷凝热。分析9对工质组合时DORC系统的冷凝器热力学参数对系统性能的影响,结果表明:随着高温回路的冷凝温度和冷凝热负荷的增高,低温回路蒸发压力和净输出功呈现升高趋势,在高温回路冷凝热负荷为715.2 kW~1 241.2 kW时,系统总净输出功呈现先升高后降低的趋势。当高温回路采用环乙烷,低温回路采用一氯三氟丙烯(反式)为工质时,系统总净输出功可达到410.6 kW。In order to reduce CO_(2) emissions from ships,a dual loop organic Rankine cycle(DORC)system is used to recover the exhaust gas and jacket cooling water waste heat from marine diesel engine for power generation.The thermodynamic model is developed by the pinch point temperature difference method.The exhaust gas heat is recovered by the high temperature(HT)loop,the cylinder liner cooling water heat and the condensing heat of the HT loop are recovered by the low temperature(LT)loop.The influence of the condenser thermal parameters on the LT loop is analyzed under nine combinations of working fluids.The results show that with the increase of condensing temperature and heat load in the HT loop,the evaporating pressure and net output power of the LT loop increase,and when the condensing heat load is 715.2 kW-1241.2 kW,the total net output power of the DORC first increases and then decreases.The total net output power of the DORC is 410.6 kW with Cyclohexane in the HT loop and R1233zd(E)in the LT loop.

关 键 词：双回路有机朗肯循环 船舶柴油机余热回收 工质组合 净输出功 

分 类 号：U664.121[交通运输工程—船舶及航道工程] TK11.5[交通运输工程—船舶与海洋工程]