Naslov
Detailed analysis of the effect of the turbine and compressor isentropic efficiency on the thermal efficiency and the total entropy change of Brayton cycle

Autori
Živić Marija ; Galović Antun ; Končić Ružica

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

Izvornik
Digital proceedings of the 8th Conference on sustainable development of energy, water and environment system / Ban, Marko ; Duić, Neven ; Guzović, Zvonimir - Dubrovnik, 2013

Skup
8th Conference on sustainable development of energy, water and environment system

Mjesto i datum
Dubrovnik, Hrvatska, 22.09.2013. - 27.09.2013

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Brayton cycle; thermal efficiency; net work per cycle; total entropy change

Sažetak
In this paper, energy and entropy analysis of the Brayton cycle with ideal gas of constant physical properties and with the specific heat ratios k = 1.3 and k=1.4 is given. Two cases with reversible (isentropic) and irreversible adiabatic processes in the turbine and compressor are considered. The cycles are analyzed in dependence of the pressure ratio p2/p1 and the ratio T3/T1 of turbine inlet temperature T3 and the compressor inlet temperature T1. Irreversibility of the adiabatic processes in the turbine and compressor is taken into account using the values of the isentropic efficiencies, for compresor 0.88 and for turbine 0.92. All relevant expressions are given in an analytical form, and results are shown in diagrams and interpreted for the values of pressure ratio in the range from 1.0 to 22.0 and the values of the temperature ratio T3/T1 = 1.5 ; 2.0 ; 3.0 ; 3.5 and 4.0.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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