冷藏列车跨临界CO_(2)喷射制冷系统性能研究  

Study on the performance of a novel transcritical CO_(2)ejector refrigeration system for refrigerated train

作　　者：姜辉 朱杰 JIANG Hui;ZHU Jie(College of Railway Communications,Shanghai Communications Polytechnic,Shanghai 201101,China;Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]上海交通职业技术学院轨道交通学院,上海201101 [2]上海海洋大学,上海201306

出　　处：《食品与机械》2024年第4期65-71,77,共8页Food and Machinery

基　　金：上海市冷链装备性能与节能评价专业技术服务平台项目(编号:20DZ2292200)。

摘　　要：目的:提出一种带喷射器的跨临界CO_(2)制冷系统,并研究其性能影响因素。方法:采用能量和火用的系统模型结合试验的方法,研究主要参数变化对传统和新型制冷系统的影响。结果:在给定工况下,采用喷射器代替节流阀,可使压缩机的功减少6.04%,性能系数提高11.1%,系统的火用效率提高11.08%;并找到了最佳气体冷却器压力使得系统性能最大化。结论:新系统的喷射器具有较大的优化潜力,且气体冷却器的出口温度对喷射器的性能影响最大。Objective:A trans-critical CO_(2)refrigeration system with ejector is proposed and its performance factors are studied.Methods:In this paper,energy and exergic system model combined with experiment method were used to study the impact of the change of major parameters on traditional and new refrigeration systems.Results:In a given working condition,exergy efficiency of the compressor increased by 11.08%when an injector replaced the throttle valve,while the power of the compressor decreased by 6.04%and the performance factor increased by 11.1%.The optimum gas cooler pressure was found to maximize the system performance.In addition,the exergic damage of the system components was optimized in this paper.Conclusion:The ejector of the new system has great potential for optimization,and the outlet temperature of the gas cooler has the greatest influence on the performance of the ejector.

关 键 词：冷藏列车 二氧化碳 跨临界制冷 喷射器 能量分析 

分 类 号：U295.2[交通运输工程—交通运输规划与管理] U272.5[交通运输工程—道路与铁道工程] TB657[机械工程—车辆工程]