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.
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)
出处
《食品与机械》
CSCD
北大核心
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)。
关键词
冷藏列车
二氧化碳
跨临界制冷
喷射器
能量分析
refrigerated train
carbon dioxide
trans-critical refrigeration
ejector
energy analysis
