ABSTRACT
Simulation and parameter variation of novel gas turbine-based cycles require a simple yet reliable cooled gas turbine model that is easy to implement. This study proposes a generic cooling model using open-loop cooling. The model has been tuned to represent modern heavy-duty gas turbines in cooperation with the gas turbine manufacturers involved in the ENCAP (Enhanced Capture of CO2, EU 6th Framework Programme) project, of which this work is a part. Additionally, a commercial gas turbine simulation tool has verified the results of the model. Besides the conventional working fluid air, the model has been investigated for a CO₂/H₂O working fluid typical for a semi-closed oxygen-combustion gas turbine cycle, since the cooling model will be used for simulation of such cycles and pre-combustion cycles within the ENCAP project.