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Experimental investigation on a Joule-Thomson refrigeration system with hydrocarbon mixtures R1150/R600 for -68°C light commercial lowtemperature freezer.

Number: 1018

Author(s) : ZOU L., YU M., BAI T., QIAN S., YU J.

Summary

In this paper, a -68℃ low-temperature freezer based on Joule-Thomson cycle is developed by using the natural binary mixed refrigerant R1150/R600. The experiment demonstrates the feasibility of using R1150/R600 freezer to obtain lowtemperature refrigeration below -68℃. The effects of mass fraction ratio, refrigerant charge and ambient temperature on the dynamic operating characteristics of the freezer during on-off and cool-down performance are discussed in detail. It is shown that 160g is the optimal refrigerant charge. Additionally, the concentration of the mixed refrigerant has a significant effect on the cool-down performance of the freezer. When the concentration of R1150 is 32.5%, the lowest freezing temperature can be achieved, but its daily power consumption is not the lowest. When the concentration of R1150 is 27.5%, it meets the cool-down requirements and has the lowest daily energy consumption of 5.94 kWh/24h.

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Pages: 18 p.

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Details

  • Original title: Experimental investigation on a Joule-Thomson refrigeration system with hydrocarbon mixtures R1150/R600 for -68°C light commercial lowtemperature freezer.
  • Record ID : 30032566
  • Languages: English
  • Subject: Technology
  • 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.iccc2024.1018

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