摘要
利用余热回收技术回收重载柴油机缸套水及排气余热是提高能源利用率的有效手段之一。搭建了三种形式的CO2混合工质动力循环系统,并用实验数据进行标定及验证。并针对内燃机多变工况的特点,对比了三种不同系统在不同外部条件阶跃下的动态响应特性。结果表明,预回热系统能显著提高系统的输出功。随着系统部件的增多,系统响应速度逐渐变缓。研究结果为CO2混合工质动力循环系统的实际运行提供理论指导。
It is one of the effective ways to improve energy efficiency to recover the energy of jacket water and exhaust waste heat of heavy-duty diesel engine by using waste heat recovery technology.Three types of CO2 mixture transcritical power cycle system is established and validated against experimental data.The dynamic performance of three kinds of system under different external step conditions is compared according to the characteristics of the varied working conditions of the internal combustion engine.The results indicated that,the Preheating-Regenerating system(PR-System)can significantly improve the system power output.The dynamic response speed of the system slows down with the increase the system components.The results provide theoretical guidance for the practical operation of CO2 mixture transcritical power cycle system.
作者
王瑞
王轩
蔡金文
王明涛
田华
舒歌群
WANG Rui;WANG Xuan;CAI Jin-Wen;WANG Ming-Tao;TIAN Hua;SHU Ge-Qun(State Key Laboratory of Engines,Tianjin University,Tianjin 300350,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2020年第11期2651-2657,共7页
Journal of Engineering Thermophysics
基金
国家自然科学基金重点项目(No.51636005)。
关键词
余热回收
CO2混合工质动力循环
动态特性
响应速度
waste heat recovery
CO2 mixture transcritical power cycle
dynamic performance
response speed
