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Experimental investigation on a Joule-Thomson refrigeration cycle with a ternary mixture of hydrocarbons for low-temperature freezer.

Number: 0332

Author(s) : LIU J., LIU Y., YAN G., YU J.

Summary

In this paper, experimental researches of the -70°C low-temperature freezer based on the conventional Joule-Thomson refrigeration cycle are carried out. A ternary mixture of hydrocarbons with low global warming potential R601a/R290/R1150 is selected as the working fluid of the freezer. In this paper, the effects of the charged concentration and the total charge on the operation characteristics during cool-down and stable operation processes are analysed in detail. The experimental results show that this refrigerant mixture has great application potential in Joule-Thomson refrigeration cycle. The low temperatures below -70°C and low compressor pressure ratios can be achieved with this refrigerant. The optimal concentration of R601a/R290/R1150 is 65%/15%/20%. The cooling rate is faster when the total charge is 300g. The final cabinet temperature is lower when the total charge is 250g, which can reach -78°C. This research could help to promote the development of low-temperature freezers and has significant practical value.

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Pages: 7 p.

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Details

  • Original title: Experimental investigation on a Joule-Thomson refrigeration cycle with a ternary mixture of hydrocarbons for low-temperature freezer.
  • Record ID : 30031755
  • Languages: English
  • Subject: Technology
  • Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Publication date: 2023/08/21
  • DOI: http://dx.doi.org/10.18462/iir.icr.2023.0332

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