Thermodynamic analysis of two-stage transcritical CO2 cycle using flash gas by-pass

Ozgur A. E., Tosun C.

INTERNATIONAL JOURNAL OF EXERGY, cilt.16, sa.2, ss.127-138, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 16 Sayı: 2
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1504/ijex.2015.068215
  • Dergi Adı: INTERNATIONAL JOURNAL OF EXERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.127-138
  • Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

In this study, the thermodynamic analysis of a two-stage transcritical CO2 cycle using flash gas by-pass is presented. The gas cooler pressure, the inter-stage pressure and the evaporation temperature of CO2 are selected as variable parameters. The cooling performance and exergetic efficiency variations of the cycle are graphically presented with these parameters. A comparison is presented between the flash gas by-pass two-stage transcritical cycle and the conventional two-stage transcritical cycle and the optimum operating parameters of the cycles are discussed. The importance of flash gas by-pass application is presented for energy and exergy efficiency improvement of two-stage transcritical CO2 cycles.