Patent ID: 8015811
Filing Date: 2011-09-13
Classification: F01K

Abstract:
1. An apparatus for reducing, at the exhaust of a turbine, high steam temperatures due to windage heating when the turbine is running at full speed, no load, the apparatus comprising: the turbine comprising an inlet, and an exhaust output, a heat recovery steam generator with at least one source of producing steam having a first pressure lower than a second pressure of steam within the turbine when the turbine is experiencing windage heating when running at full speed, no load, the source of steam production being connected to the turbine inlet, and at least one flow control apparatus that is adjustable to control the flow of steam to the turbine inlet from the at least one source of steam production, the at least one apparatus being adjusted to input the first lower pressure steam into the turbine inlet to thereby create first steam conditions at the turbine inlet that are lower in pressure and temperature than second steam conditions at the turbine exhaust output to thereby reduce high steam temperatures due to windage heating at the turbine exhaust output.