Naslov
Exergy destruction minimisation of a regenerative Brayton cycle

Autori
Rauch, Martina ; Holik, Mario ; Barac, Antun ; Galović, Antun

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 9th International Scientific and Expert Conference TEAM 2018 / Lalić, Bojan ; Tasić, Nemanja ; Gračanin, Danijela - Novi Sad : Faculty of Technical Sciences ; University of Novi Sad, 2018, 17-28

ISBN
978-86-6022-098-3

Skup
9th International Scientific and Expert Conference (TEAM 2018)

Mjesto i datum
Novi Sad, Srbija, 10.10.2018. - 12.10.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
regenerative Brayton cycle, thermal efficiency, exergy efficiency, exergy destruction

Sažetak
In this paper, a Brayton cycle with regenerator in which an air is preheated by the exhaust gases leaving the turbine is analysed. In the model, by utilizing the air-standard assumptions, the combustion process is replaced by a constant-pressure heat-addition process in the heat exchanger where the air is heated by the stream of constant temperature. The regenerative Brayton cycle is optimized using the three criteria: the maximum effective specific work out, the maximum thermal efficiency of the cycle and the minimum exergy destruction of the cycle. The processes in the turbine and compressor are adiabatic, with the given values of their isentropic efficiencies. The analysis is performed in the non- dimensional form, using the pressure ratio as variable, in the interval from 2 to 20. The effect of the regenerator on the thermal and exergy efficiency of the cycle is presented and the criterion which refers to the justification of the installation of the regenerator is given.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA