Share

IIR document

Experimental investigation on the low-GWP HFC/HFO blends R454A and R454C in a R404A refrigeration system.

Author(s) : ORUÇ V., DEVECIOGLU A. G.

Type of article: IJR article

Summary

This study experimentally compares the high-GWP R404A with two low-GWP HFC/HFO blends, R454A (35% R32 + 65% R1234yf) and R454C (21.5% R32+ 78.5% R1234yf). Three evaporation temperatures (−5, 0 and +5 °C) and three condenser temperatures (30, 40, 50 °C) were studied. For all covered cases of condenser temperatures, the measured compressor power consumption was reduced by about 6% and 15% for R454A and R454C, respectively compared to R404A. The cooling capacity of R454A was higher than R404A by 11%, approximately, although the mass flow rate values have been reduced using the studied alternative refrigerants. As a result, the COP values of R454A and R454C were greater than R404A by about 14% and 10%, respectively. Although the discharge temperatures of the alternative blends were determined to be higher than that obtained for R404A, they are suitable for the tested operating conditions. The proposed alternative refrigerants could be used directly in available R404A systems without any constructional modification requirement if safety concerns can be solved. Moreover, it is possible to have higher cooling capacity and COP values as well as reduced environmental impacts.

Available documents

Format PDF

Pages: 242-251

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: Experimental investigation on the low-GWP HFC/HFO blends R454A and R454C in a R404A refrigeration system.
  • Record ID : 30028532
  • Languages: English
  • Subject: HFCs alternatives
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 128
  • Publication date: 2021/08
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2021.04.007
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles in this issue (27)
See the source

Indexing