| 摘要 |
Hydrogen is used as the fuel source in a gas turbine combined cycle power plant. The hydrogen may be combusted in either a mixture of compressed air and steam or a mixture of pure oxygen and steam. In either case, the work of compression associated with pressurizing the oxidant for the combustion process is considerably reduced since steam, rather than excess air, is used to moderate combustion temperature, as well as to cool the turbine components. The steam is produced by transferring heat from the turbine exhaust gas to feed water. Since no hydrocarbon fuel is used, fuel bond NOx is eliminated. Moreover, if pure oxygen is used, rather than air, for the combustion of the hydrogen, then the only emission from the power plant is water vapor, which may be condensed and returned to the cycle. |
