Refrigeration Characteristics of R448A and R404A in High- and Low-Temperature Test Chambers

Liu Zhihao; Wang Zilong; Zhang Hua; Gao Wenjing; Tian Ziao; Hu Changqing; Yang Bin

doi:10.12465/j.issn.0253-4339.2025.01.116

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Refrigeration Characteristics of R448A and R404A in High- and Low-Temperature Test Chambers

更新时间：2025-01-23

- Refrigeration Characteristics of R448A and R404A in High- and Low-Temperature Test Chambers
- Journal of Refrigeration Vol. 46, Issue 1, Pages: 116-123(2025)
- 作者机构：
  
  1.上海理工大学能源与动力工程学院　上海　 200093
  2.中国科学院上海微系统与信息技术研究所　上海　 200050
  3.上海铂世光半导体科技有限公司　上海　 201700
- 作者简介：
  
  Wang Zilong, male, Ph. D., associate professor, School of Energy and Power Engineering, University of Shanghai for Science and Technology, 86-21-55275542, E-mail: wzl@usst.edu.cn. Research fields: phase change thermal storage technology, solar energy utilization technology, low-grade energy utilization and energy conservation, refrigeration air-conditioning and heat pump technology.
- 基金信息：
  
  Shanghai Natural Science Foundation(20ZR1438600);Central Government Guides Local Science and Technology Development Fund Projects(YDZX20213100003002)
- DOI：10.12465/j.issn.0253-4339.2025.01.116
  CLC： TB61⁺1;TB657.3
- Received：31 August 2023，
  
  Revised：15 November 2023，
  
  Accepted：2023-12-12，
  
  Published：16 February 2025
- 稿件说明：
移动端阅览
Liu Zhihao, Wang Zilong, Zhang Hua, et al. Refrigeration Characteristics of R448A and R404A in High- and Low-Temperature Test Chambers[J]. Journal of refrigeration, 2025, 46(1): 116-123.
DOI：

Liu Zhihao, Wang Zilong, Zhang Hua, et al. Refrigeration Characteristics of R448A and R404A in High- and Low-Temperature Test Chambers[J]. Journal of refrigeration, 2025, 46(1): 116-123. DOI： 10.12465/j.issn.0253-4339.2025.01.116.

摘要

目前高低温试验箱制冷系统存在能耗高和制冷效率低的问题。为了提高系统运行效率并符合低碳环保的发展方向，搭建了高低温试验箱补气增焓系统，并选取新型制冷剂R448A和R404A进行实验研究，研究了不同制冷剂充注量和压缩机频率对制冷系统性能的影响。实验结果表明：随着充注量的增加，R404A和R448A系统的制冷量和COP均先升高后减小，R448A系统的最大制冷量和COP分别比R404A系统高11.3%和10.4%；R448A系统的功耗均小于R404A系统，在充注量为2.0 kg时，R448A系统的功耗比R404A系统低7.5%。随着压缩机频率的增加，压缩机功耗和制冷量均增大，R448A制冷量的增幅比R404A高7.7%，而压缩机功耗的增幅比R404A低1.9%。

Abstract

The refrigeration systems in high- and low-temperature test chambers face challenges of high energy consumption and low efficiency. This study developed an enhanced vapor injection system in a test chamber and conducted experiments using R448A and R404A refrigerants to improve the system efficiency and ensure its alignment with low-carbon environmental goals. The impact of refrigerant charge amounts and compressor frequencies on system performance was analyzed. The results demonstrated that the cooling capacity and coefficient of performance (COP) of the R404A and R448A systems initially increased and then decreased with increasing refrigerant charge amounts. The R448A system demonstrated an 11.3% higher maximum cooling capacity and a 10.4% higher COP than the R404A system. In addition

the compressor power consumption of the R448A system was lower than that of the R404A system. At a refrigerant charge amount of 2.0 kg

the R448A system consumed 7.5% less power than the R404A system. The refrigeration capacity of the R448A system exhibited a 7.7% higher increase compared with that of the R404A system

whereas the compressor power consumption increase was 1.9% lower than that of the R404A system.

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references

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