Parametric investigation of thermodynamic cycle performance for gas turbine applications

Abstract

Gas turbines are used in a wide range of applications. The goal of this thesis is to investigate the use of gas turbines and focus on their thermodynamic cycles and performance. This thesis is based on a thermodynamic cycle analysis of the operation of gas turbines with the use of dedicated software (CyclePad). The most common gas turbine components will be investigated and their effect on the overall gas turbine performance will be presented in relation to important gas turbine operational parameters. A parametric analysis will be performed which will provide useful data for this technology. Firstly is presented a literature study regarding the theory and thermodynamics of gas turbines. A Turbec T100 has been selected for investigation and a technical description of the Turbec T100 also included. The modeling of the Turbec T100 is done by the software CyclePad. At the next step, an investigation of the interaction of the components of the cycle and the efficiency of the MGT T100 is presented. Specifically, the effect of the thermal efficiency of cycle over the compressor efficiency, the effect of the thermal efficiency of cycle over the outlet temperature of turbine and the effect of the thermal efficiency over the recuperator effectiveness are analyzed. Finally, the thermal efficiency of the cycle by utilizing multistage compression with intercooling, regeneration, and multistage expansion with reheating is analyzed.