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System modelling with low global warming potential refrigerants for transportation refrigeration application.

Number: 0105

Author(s) : NAYAK G., PETERSEN M.

Summary

This paper provides system level simulation results of conventional long-haul truck and trailer transport refrigeration units which currently use R-452A refrigerant in the refrigeration system with lower GWP alternate refrigerants R-454A and R-454C. Previously, simple thermodynamic cycle models have been used to compare the performance of these refrigerants with efficiency-based and physics-based refrigerant agnostic or refrigerant independent models in terms of capacity, COP, and the compressor discharge temperature. These thermodynamic cycle models did not include system effects such as pressure drop and temperature glide in the HXs, system architecture etc. Detailed physics-based system level models help in understanding the challenges associated with deployment of these refrigerants such as higher compressor discharge temperature and to develop efficient control strategies to mitigate them. Overall, these design improvements enable the refrigeration system to achieve greater efficiency over the entire application range while reducing the indirect carbon emissions.

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Pages: 8

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Details

  • Original title: System modelling with low global warming potential refrigerants for transportation refrigeration application.
  • Record ID : 30031772
  • Languages: English
  • Subject: Technology, HFCs alternatives
  • 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.2023.0105

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