Share

IIR document

Alternative CO2-based blends for transcritical refrigeration systems.

Author(s) : SÁNCHEZ D., VIDAN-FALOMIR F., LARRONDO-SANCHO R., LLOPIS R., CABELLO R.

Type of article: IJR article

Summary

The extensive use of CO2 in commercial refrigeration system has grown in the last two decade thanks to the development of new components and configurations that allows working in transcritical conditions efficiently. However, using these arrangements increases the cost and complexity of the refrigerating plant, making it challenging to implement them in medium or low-capacity systems. As an alternative, CO2-based binary mixtures report attractive improvements that allow for enhancing the COP of the system by minimising its complexity and maintaining the safety and environmental conditions of CO2. This manuscript analyses five binary mixtures of CO2 with the refrigerants R32, R152a, R1234yf, R1234ze(E) and R1270, determining the optimal mixture composition for maximising the COP of a CO2 transcritical refrigeration plant in a wide range of environmental temperatures (0 to 40°C). Fixing the operating conditions for a medium-temperature application, the binary mixtures of CO2/R32 (81/19% in mass) and CO2/R1270 (92.5/7.5% in mass) reported the best COP enhancements results with increments up to +21.4% and +8.7%, respectively, at high environmental temperatures.

Available documents

Format PDF

Pages: 387-399

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Alternative CO2-based blends for transcritical refrigeration systems.
  • Record ID : 30031948
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 152
  • Publication date: 2023/08
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2023.03.021

Links


See other articles in this issue (34)
See the source

Indexing