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Refrigeration Characteristics of R448A and R404A in High- and Low-Temperature Test Chambers
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Zhihao Liu1, Zilong Wang1, Hua Zhang1, Wenjing Gao1, Ziao Tian2, Changqing Hu3, Bin Yang3
Journal of Refrigeration | 2025, 46(1) : 116 - 123
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Journal of Refrigeration | 2025, 46(1): 116-123
Refrigeration Characteristics of R448A and R404A in High- and Low-Temperature Test Chambers
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Zhihao Liu1, Zilong Wang1, Hua Zhang1, Wenjing Gao1, Ziao Tian2, Changqing Hu3, Bin Yang3
Affiliations
  • 1.School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
  • 2.Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
  • 3.Shanghai Worldiray Semiconductor Technology Co., Ltd., Shanghai, 201700, China
Published: 2025-02-16 doi: 10.12465/j.issn.0253-4339.2025.01.116
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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.

Zhihao Liu, Zilong Wang, Hua Zhang, Wenjing Gao, Ziao Tian, Changqing Hu, Bin Yang. 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
Funding
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  • Shanghai Natural Science Foundation(20ZR1438600)
  • Central Government Guides Local Science and Technology Development Fund Projects(YDZX20213100003002)
Appendix
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Year 2025 volume 46 Issue 1
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Article Info
doi: 10.12465/j.issn.0253-4339.2025.01.116
  • Receive Date：2023-08-31
  • Online Date：2026-03-13
  • Published：2025-02-16
Article Data
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History
  • Received：2023-08-31
  • Revised：2023-11-15
  • Accepted：2023-12-12
Funding
Shanghai Natural Science Foundation(20ZR1438600)
Central Government Guides Local Science and Technology Development Fund Projects(YDZX20213100003002)
Affiliations
    1.School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
    2.Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
    3.Shanghai Worldiray Semiconductor Technology Co., Ltd., Shanghai, 201700, China

Corresponding:

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: . 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.
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表12种不同金属材料的力学参数
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Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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