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September 10, 2025International Journal of ThermodynamicsOpen Access

Performance Evaluation of Vapor Compression Refrigeration System using CO2/Propane and CO2/Propylene Mixtures

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SJSompop Jarungthammachote

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Overview

Theoretical analysis reveals CO2/Propylene mixtures outperform CO2/Propane in refrigeration efficiency.

Key Points

  • The R744+R1270 mixture achieves COP and VRC values 16.5% and 12.2% higher than R744+R290.
  • Optimal compressor discharge pressure for R744+R1270 is 240 kPa lower than for R744+R290.
  • Higher ambient air temperature leads to rising optimal compressor discharge pressure and lowers COP.
  • Exceeding a mole fraction of 0.6 in R744 increases the mixture's lower flammability limit exponentially.

Cite This Study

Sompop Jarungthammachote (2025) studied this question.

synapsesocial.com/papers/68c182589b7b07f3a060f17chttps://doi.org/10.5541/ijot.1544038
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