Natural gas oxy-fuel cycles—Part 1: Conceptual aerodynamic design of turbo-machinery components

Several oxy-fuel cycles have been considered in the ENCAP project. These cycles require compressors and turbines that operate at different conditions and with different gas compositions from conventional heavy-duty gas turbines. Conceptual designs of selected turbo-machinery have therefore been carried out to assess the feasibility of the proposed components. A compressor and turbine from the SCOC-CC and S-Graz cycles have been selected for this preliminary design study. The unusual boundary conditions would ideally require new hardware. As entirely new designs might rule out the commercial realization of these cycles possible ways of using existing components for the SCOC-CC compressor have been investigated.