Review of stationary and transport CO2 refrigeration and air conditioning technologies
Review of stationary and transport CO2 refrigeration and air conditioning technologies
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DOI：
10.1016/j.applthermaleng.2020.116422
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发表时间：
2021-02
影响因子：
6.4
通讯作者：
R. Barta;E. Groll;D. Ziviani
中科院分区：
文献类型：
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作者：
R. Barta;E. Groll;D. Ziviani
自 20 世纪 90 年代作为制冷剂重新流行以来，二氧化碳 (CO2) 的受欢迎程度和应用范围不断扩大。其全球变暖潜值 (GWP) 可以忽略不计，消除了因立法而被淘汰的风险，而且其无毒、不易燃且成本低廉，使其可用于许多蒸汽压缩循环应用。然而，在中等和高环境条件下，高临界压力和低临界温度需要明显更多的压缩机功率，因此需要增加循环修改以达到等于或大于其他工作流体的性能系数（COP）值。本文综述了在运输和固定制冷的制冷和空调 (AC) 循环中使用二氧化碳蒸汽压缩循环的研究。撰写这篇评论的主要目的是为许多常见的循环修改提供证据和理由，然后将这些修改与广泛的应用程序联系起来。因此，显示了移动和固定应用中的高级循环，并且呈现的各个修改有其自己独立的理由来创建主题的完整图片。包括完整系统的设计以及系统内的特定组件，以及二氧化碳的热物理性质与其在这些特定应用中的优势之间的关系。此外，还回顾了使用二氧化碳代替现有流体的可行性的经济分析。讨论了在固定式和运输制冷中使用二氧化碳制冷循环所面临的挑战，以及克服这些挑战的未来潜在进展。
Since its resurgence as a refrigerant in the 1990s, Carbon Dioxide (CO2) has grown in popularity and breadth of application. Its negligible global warming potential (GWP) eliminates the risk of being phased out due to legislation, and its non-toxicity, non-flammability, and low cost allows its use in many vapor compression cycle applications. However, the high critical pressure and low critical temperature require significantly more compressor power under moderate and high-ambient conditions and thus, necessitate the addition of cycle modifications to reach coefficient of performance (COP) values equal to or greater than those of other working fluids. This paper provides a review of research conducted on the use of CO2vapor compression cycles in refrigeration and air conditioning (AC) cycles for both transportation and stationary refrigeration. A primary intention of writing this review is to offer evidence and justification for many common cycle modifications, then connect these modifications to a broad array of applications. Thus, advanced cycles in mobile and stationary applications are shown and the individual modifications present have their own independent justification to create a complete picture of the topic. The designs of complete systems, as well as specific components within the system, are included, as are the relations between the thermo-physical properties of CO2and their benefits in these particular applications. Additionally, economic analyses of the feasibility of using CO2in place of existing fluids are reviewed. Challenges facing the use of CO2refrigeration cycles in stationary and transportation refrigeration are discussed, as are potential future advancements to overcome them.