A fuel nozzle with active cooling is provided. It includes an outer peripheral wall, a nozzle center body concentrically disposed within the outer wall in a fuel and air pre-mixture. The fuel and air pre-mixture includes an air inlet, a fuel inlet and a premixing passage defined between the outer wall in the center body. A gas fuel flow passage is provided. A first cooling passage is included within the center body in a second cooling passage is defined between the center body and the outer wall.
FEDERAL RESEARCH STATEMENT
This invention was made with the Government support under Contract No. DE-FC26-05NT42643, awarded by the Department of Energy. The Government has certain rights in this invention.