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Energy improvements in a stand-alone transcritical refrigeration system using a low-GWP mixture of CO2/R1270.

Number: pap. n. 1231

Author(s) : SÁNCHEZ D., CABELLO R., LLOPIS R., et al.

Summary

The performance of CO2 transcritical cycles is widely affected by the heat rejection temperature due to its low critical temperature. Due to this, basic cycles are modified by adding new configurations and components that increase their complexity and cost. Blends of CO2 with other fluids as hydrocarbons, can improve the performance of these cycles by increasing their critical point and latent heat while reducing the working pressure of the compressor. Accordingly, the aim of this communication is to show the energy benefits obtained with a theoretical non-flammability blend of CO2/R1270 (91/9% by mass) when it is tested in a beverage cooler system adapted for CO2. Using a transcritical basic cycle with an IHX and one expansion-stage, the energy savings obtained with the new bled, maintaining an average can temperature of 3.3ºC, are 10.3% at the climate conditions of 25ºC and 60% of RH (class 3).

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Details

  • Original title: Energy improvements in a stand-alone transcritical refrigeration system using a low-GWP mixture of CO2/R1270.
  • Record ID : 30026739
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1231
  • Notes:

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