Decision working medium for lower cycle CCGT trinary type

Sviatoslav Tsibulskiy, Nikolay Galashov, Al'bina Bannova, Denis Melnikov, Alexander Kiselev

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


The object of the study are low-boiling substances, which can be used as working fluid in the Organic Rankine cycle (ORC) combine cycle gas turbine (CCGT) trinary type. Purpose of research is search for substances with the best thermodynamic, thermophysical and ecological properties. The calculation algorithm represents a mathematical calculation of CCGT in which the lower cycle, operating on low-boiling fluid and utilizes low-potential heat, as an air-cooling device On the basis of available scientific and practical facts on the use of working fluids the organic Rankine cycle for analysis were selected ozone-safe refrigerant: butane, pentane, R236ea, R236fa, R123, R245ca, R245fа, R365mfc, RC318. For these substances were found and tabulated critical pressure and temperature, condensation pressure, density and dynamic viscosity at a given condensation temperature. Studies have shown that the highest thermal net efficiency is achieved when using natural Freon pentane and synthetic R365mfc. Net efficiency CCGT strongly depends on the condensation temperature of the substance. For example, when using pentane when the condensation temperature decreases on 10 С net efficiency increases about 0.71 %.

Original languageEnglish
Article number01025
JournalMATEC Web of Conferences
Publication statusPublished - 12 Dec 2017
Event5th International Youth Forum on Smart Grids 2017 - Tomsk, Russian Federation
Duration: 9 Oct 201713 Oct 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Engineering(all)

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