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


Ozgur A. E. , Tosun C.

INTERNATIONAL JOURNAL OF EXERGY, cilt.16, ss.127-138, 2015 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 16 Konu: 2
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1504/ijex.2015.068215
  • Dergi Adı: INTERNATIONAL JOURNAL OF EXERGY
  • Sayfa Sayıları: ss.127-138

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.