冷藏列车跨临界CO2喷射制冷系统性能研究
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(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)

作者简介:

姜辉(1983—),男,上海交通职业技术学院讲师,博士。E-mail:jianghuiscp@126.com

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基金项目:

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)


Study on the performance of a novel transcritical CO2 ejector refrigeration system for refrigerated train
Author:
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(1. College of Railway Communications, Shanghai Communications Polytechnic, Shanghai 201101, China; 2. Shanghai Ocean University, Shanghai 201306, China)

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    摘要:

    目的:提出一种带喷射器的跨临界CO2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。

    Abstract:

    Objective: A trans-critical CO2 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.

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引用本文

姜 辉,朱 杰.冷藏列车跨临界CO2喷射制冷系统性能研究[J].食品与机械,2024,40(4):65-71,77.
JIANG Hui, ZHU Jie. Study on the performance of a novel transcritical CO2 ejector refrigeration system for refrigerated train[J]. Food & Machinery,2024,40(4):65-71,77.

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  • 收稿日期:2022-12-11
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  • 在线发布日期: 2024-05-21
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