13th European Conference on Turbomachinery Fluid dynamics & Thermodynamics
This study presents the thermodynamic analysis results of the NET Power cycle featuring nearly 100% CO2 capture level. Significant initial pressure, low turbine pressure ratio, recuperation of heat in regenerator allow achieving very high net efficiency. The cycle design parameters are set up on the basis of the component technologies of today’s state-of-the-art gas turbines. The models of cooled gas turbine compartment and multi-flow high temperature regenerator were developed. The potential pinch points were analyzed. An influence of turbine inlet temperature and pressure, turbine outlet pressure, turbine coolant temperature, cooling water temperature on cycle efficiency was estimated. The performance penalty due to the oxygen production and carbon dioxide capture was examined. For the optimal parameters, the net efficiency of the NET Power cycle is 56.5%. An influence of equipment characteristics adopted in simulation such as turbine and compressor polytropic efficiency on the results was estimated. The sensitivity analysis of the main cycle parameters was provided.