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Ejector evaluation for ultra-low temperature refrigeration using natural refrigerants.

Number: 1113

Author(s) : UDROIU C-M., MOTA BABILONI A., GIMÉNEZ-PRADES P., BARRAGÁN-CERVERA A., NAVARRO-ESBRÍ J.

Summary

Ultra-low temperature refrigeration is a requirement that has intensified in recent years after the appearance of vaccines in response to the COVID-19 pandemic. The current technologies for this low-temperature range are few, with deficient performance and high global warming potential refrigerants. This paper tries to study the introduction of the ejector in cascade cycles for ultra-low temperature refrigeration and study its implementation in both stages and only in one, analyzing its behavior and results. The study is carried out with refrigerants R-290 in the high-temperature stage and R-170 in the low-temperature stage, since these are natural refrigerants with very low global warming potential. The results show that the ejector is a component that causes improvements of 21 % in the cycle both when placed in the high-temperature and low-temperature stages. Also, it emits less than half (-57.5 %) CO2 compared to actual ultra-low temperature cycles.

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Pages: 11 p.

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Details

  • Original title: Ejector evaluation for ultra-low temperature refrigeration using natural refrigerants.
  • Record ID : 30032568
  • Languages: English
  • Subject: HFCs alternatives
  • Source: 8th IIR International Conference on Sustainability and the Cold Chain. Proceedings: June 9-11 2024
  • Publication date: 2024/06/11
  • DOI: http://dx.doi.org/10.18462/iir.iccc2024.1113

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