Jeni A. Popescu and Ionut Porumbel and Valeriu A. Vilag and Cleopatra F. Cuciumita
Thermodynamic Cycle Analysis for Overall Efficiency Improvement and Temperature Reduction in Gas Turbines
593 - 603
2015
9
4
International Journal of Energy and Power Engineering
https://publications.waset.org/pdf/10001041
https://publications.waset.org/vol/100
World Academy of Science, Engineering and Technology
The paper presents a thermodynamic cycle analysis
for three turboshaft engines. The first cycle is a Brayton cycle,
describing the evolution of a classical turboshaft, based on the
Klimov TV2 engine. The other four cycles aim at approaching an
Ericsson cycle, by replacing the Brayton cycle adiabatic expansion in
the turbine by quasiisothermal expansion. The maximum quasi
Ericsson cycles temperature is set to a lower value than the maximum
Brayton cycle temperature, equal to the Brayton cycle power turbine
inlet temperature, in order to decrease the engine NOx emissions.
Also, the powerexpansion ratio distribution over the stages of the gas
generator turbine is maintained the same. In two of the considered
quasiEricsson cycles, the efficiencies of the gas generator turbine, as
well as the powerexpansion ratio distribution over the stages of the
gas generator turbine are maintained the same as for the reference
case, while for the other two cases, the efficiencies are increased in
order to obtain the same shaft power as in the reference case. For the
two cases respecting the first condition, both the shaft power and the
thermodynamic efficiency of the engine decrease, while for the other
two, the power and efficiency are maintained, as a result of assuming
new, more efficient gas generator turbines.
Open Science Index 100, 2015