| 摘要 |
A combined cycle system includes gas and steam turbines, a saturator and a fuel gas superheater for supplying moisturized heated fuel gas to the gas turbine, a gas turbine exhaust heat recovery system for generating steam and heating water for the superheater and a saturator heater for a recycle water conduit. A constant ratio of water supplied to the fuel gas saturator to dry fuel gas supplied to the fuel gas saturator and Wobbe number is maintained by adjusting the flow of the recycle water stream. Additional properties of the moisturized fuel gas, such as temperature, moisture content, composition, and heating value, are also used to control the water recycle stream to supply consistent moisturized fuel gas to the gas turbine system.
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