Patent References 3928972 3928977 Method of optimizing the efficiency of a steam turbine power plant Method and apparatus for thermal stress controlled loading of steam turbines Method and system for controlling boiler superheated steam temperature Maximum efficiency steam temperature control system Patent #: 4549503 InventorAssigneeApplicationNo. 07/064144 filed on 06/16/1987US Classes:700/287, Turbine or generator control60/660, Having condition responsive control60/667Of means controlling boiler or its feedExaminersPrimary: Lall, Parshotam S.Assistant: Trans, V. N. International ClassesF01D 17/00 (20060101)F01D 17/08 (20060101) AbstractA method and apparatus for determining the steam temperature in the impulse chamber at the first stage exit of a multistage high pressure steam turbine utilizes measurement of steam pressure in the impulse chamber and steam pressure and temperature at the exhaust as inputs to a digital computer. The functional relationships among steam pressure, temperature, specific volume, enthalpy and entropy are stored in the computer memory, and used with these measured quantities to iteratively calculate the steam temperature at the impulse chamber. | |