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US 5,293,842 AGranted
Method for operating a system for steam generation, and steam generator system
AssigneeSiemens Aktiengesellschaft
InventorGeorg Loesel
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AssigneeSiemens Aktiengesellschaft
InventorGeorg Loesel
Estimating the term…
A method for operating a system for steam generation includes generating steam from water by indirect heat exchange with hot flue gas, by first preheating condensed water and then evaporating the preheated water at high pressure. The method further includes cooling the preheated water which is already at high pressure, by heat exchange with at least one partial flow of the condensed water, at least in a partial-load range. A system for steam generation, such as in a gas and steam turbine plant, includes a steam generator through which hot flue gas flows. The steam generator has heating surfaces. One of the heating surfaces is a condensate preheater having primary and secondary sides. A heat exchanger is connected downstream of the condensate preheater on the primary side and is connected upstream of the condensate preheater on the secondary side.
In a method for operating a system for steam generation, which includes generating steam from water by indirect heat exchange with hot flue gas, by first preheating condensed water and then evaporating the preheated water at high pressure, the improvement which comprises cooling the preheated water which is already at high pressure, by heat exchange with at least one partial flow of the condensed water, at least in a partial-load range.
A system for steam generation, comprising a steam generator through which hot flue gas flows, said steam generator having heating surfaces, one of said heating surfaces being a condensate preheater, and a heat exchanger having primary and secondary sides, said primary side of said heat exchanger being connected downstream of said condensate preheater and the secondary side of said heat exchanger being connected upstream of said condensate preheater.
A gas and steam turbine plant, comprising a system for steam generation including a steam generator through which hot flue gas flows, said steam generator having heating surfaces, one of said heating surfaces being a condensate preheater, and a heat exchanger having primary and secondary sides, the primary side of said heat exchanger being connected downstream of said condensate preheater and the secondary side of said heat exchanger being connected upstream of said condensate preheater.
Dependencies are inferred from the claim text.