Share

IIR document

Performance analysis of the ejector-expansion refrigeration cycle using zeotropic mixtures.

Author(s) : ZHAO L., YANG X., DENG S., et al.

Type of article: Article, IJR article

Summary

To evaluate the performance of the ejector-expansion refrigeration cycle (EERC) using zeotropic mixtures, a numerical study is conducted. A constant-pressure two-phase ejector model for zeotropic mixtures is established. The effects of both the fluid composition and the working conditions are investigated. Mixture R134a/R143a is selected as the working and the simulation results reveal that, the cycle COP increases first and then decreases as MFt (the mass fraction of R134a) increases in the researched condition. The COP gets a maximum value of 4.18 with MFt of 0.9 and yields a minimum value of 3.66 with MFt of 0.5. With mixture 0.9/0.1, the COP improvement reaches a maximum value of 10.47%. This improvement rises at high condensing temperature or low evaporating temperature. The exergy analysis shows that the compressor and ejector contribute the most exergy destruction, and the cycle exergy efficiency achieves a maximum value with MFt of 0.7.

Available documents

Format PDF

Pages: 197-207

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: Performance analysis of the ejector-expansion refrigeration cycle using zeotropic mixtures.
  • Record ID : 30015231
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 57
  • Publication date: 2015/09

Links


See other articles in this issue (25)
See the source

Indexing