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Effects of rising ambient temperature on the performance of transcritical CO2 refrigeration systems.

Number: 1132

Author(s) : CHAI L., TASSOU S. A., TSAMOS K. M.

Summary

Rising ambient temperatures significantly impact the thermodynamic performance of transcritical CO₂ refrigeration systems. To investigate these effects, detailed mathematical modelling of the gas cooler was developed and integrated into a CO₂ refrigeration system model. The thermodynamic performance was investigated in the broad range of ambient temperature between 25°C and 40°C, and high-side CO₂ pressure from 75 bar to 140 bar. The results of COP and cooling capacity show a significant decrease with increasing ambient temperature. To improve the performance of CO₂ refrigeration systems at high ambient temperatures evaporative or spray cooling can be employed to enhance the heat transfer in the gas cooler and reduce gas cooler temperature and pressure. In this paper experimental and modelling results are used to investigate the impact of spray cooling on the performance of CO₂ refrigeration systems at high ambient temperatures.

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Pages: 9 p.

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Details

  • Original title: Effects of rising ambient temperature on the performance of transcritical CO2 refrigeration systems.
  • Record ID : 30034181
  • Languages: English
  • Subject: Technology
  • Source: 1st IIR International Conference on Refrigeration Adapting to Rising Temperatures
  • Publication date: 2025/08
  • DOI: http://dx.doi.org/10.18462/iir.adaptation.2024.1132

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