Share

IIR document

Experiment and simulation on the performance of an autocascade refrigeration system using carbon dioxide as a refrigerant.

Author(s) : KIM S. G., KIM M. S.

Type of article: Article, IJR article

Summary

The main purpose of this study is to investigate the performance of an autocascade refrigeration system using zeotropic refrigerant mixtures of R744/134a and R744/290. One of the advantages of this system is the possibility of keeping the highest pressure of the system within a limit by selecting the composition of a refrigerant mixture as compared to that in the vapour compression system using pure carbon dioxide. Performance test and simulation have been carried out for an autocascade refrigeration system by varying secondary fluid temperatures at evaporator and condenser inlets. Variations of mass flow rate of refrigerant, compressor power, refrigeration capacity, and coefficient of performance (COP) with respect to the mass fraction of R744 in R744/134a and R744/290 mixtures are presented at different operating conditions. Experimental results show similar trends with those from the simulation. As the composition of R744 in the refrigerant mixture increases, cooling capacity is enhanced, but COP tends to decrease while the system pressure rises.

Available documents

Format PDF

Pages: 1093-1101

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: Experiment and simulation on the performance of an autocascade refrigeration system using carbon dioxide as a refrigerant.
  • Record ID : 2003-1700
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 25 - n. 8
  • Publication date: 2002/12

Links


See other articles in this issue (16)
See the source

Indexing