Rauch, Martina and Galović, Antun and Virag, Zdravko (2015) Optimization of combined Brayton-Rankine cycle with respect to the total thermal efficiency. = Optimization of combined Brayton-Rankine cycle with respect to the total thermal efficiency. In: 23. međunarodni simpozij o grijanju, hlađenju i klimatizaciji = 23rd international symposium on heating, refrigerating and air conditioning, 23.04.2015., Zagreb; Croatia.
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Abstract
In this paper combined Brayton–Rankine cycle is mathematically simulated. In the Matlab program package an adequate numerical procedure has been developed to determine the maximum thermal efficiency of the combined cycle limited by the temperature of exhaust gases at the entrance of the gas turbine and the temperature of the condensation of water vapor in the steam condenser. Furthermore, additional limitations were introduced: the exhaust gases temperatures at the exit of the gas turbine and dryness fraction at the exit of the steam turbine. Impact of adiabatic flame temperature, temperature difference of the working fluid (water) and the exhaust gases at the pinch point and dryness fraction on change of the overall thermal efficiency of the combined cycle is examined. It is concluded that adiabatic flame temperature has the most impact for the selected intervals of the observed values.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Keywords (Croatian): | combined Brayton–Rankine cycle; maximum thermal efficiency; optimization |
| Subjects: | TECHNICAL SCIENCE |
| Divisions: | 300 Department of Thermodynamics, Thermal and Process Engineering > 310 Chair of Technical Thermodynamics 300 Department of Thermodynamics, Thermal and Process Engineering > 320 Chair of Thermal and Process Engineering 1400 Department of fluid mechanics > 1410 Chair of computer fluid mechanics |
| Indexed in Web of Science: | No |
| Indexed in Current Contents: | No |
| Date Deposited: | 13 May 2015 09:49 |
| Last Modified: | 05 Jun 2017 13:28 |
| URI: | http://repozitorij.fsb.hr/id/eprint/4116 |
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