CO_(2)混合工质冷电联合循环非设计最佳运行组分研究  

Optimal Working Fluid Composition of Combined Cooling and Power Cycle With CO_(2)-based Mixture Considering Off-design Operation

作　　者：孙孝存 石凌峰 田华[2] 舒歌群 SUN Xiaocun;SHI Lingfeng;TIAN Hua;SHU Gequn(Department of Thermal Science and Energy Engineering,University of Science and Technology of China,Hefei 230027,China;State Key Laboratory of Engines,Tianjin University,Tianjin 300071,China)

机构地区：[1]中国科学技术大学热科学和能源工程系,合肥230027 [2]天津大学内燃机燃烧学国家重点实验室,天津300072

出　　处：《工程热物理学报》2023年第11期2941-2947,共7页Journal of Engineering Thermophysics

基　　金：国家重点研发计划(No.2022YFE0100100)。

摘　　要：本文针对耦合在冷藏车上的CO_(2)混合工质冷电联合循环系统,对其道路运行时的非设计性能进行分析。首先,根据道路运行参数,对内燃机的工况变化区间进行了归类划分;随后,依次建立了稳态设计模型和非设计计算模型。计算结果显示,对于整个道路工况下不同的发动机运行工况,最佳的混合工质CO_(2)充注比例不同;另一方面,对于整个道路运行工况下的综合性能表现,考虑非设计运行与只考虑稳态设计的系统最优混合工质CO_(2)充注比例相近。This study analyses off-design performance of combined cooling and power cycle with CO_(2)-based mixture mounted in refrigeration truck.Engine operating conditions is classified first according to the parameters of road conditions;then,thermodynamic model and off-design model are established.Results show that the best CO_(2) mass fractions are different for various engine operating points;on the other hand,for the comprehensive performance of the whole road condition,the best designed CO_(2) mass fractions are equal when considering thermodynamic design and offdesign operation.

关 键 词：冷电联合循环 二氧化碳混合工质 非设计 

分 类 号：TK123[动力工程及工程热物理—工程热物理]