Combined cycle power plant
AssigneeAsea Brown Boveri AG
InventorHans Ulrich Frutschi
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Abstract
In a method for operating a gas turbo-generator set (GT), the caloric potential of the exhaust gases (14) from the gas turbo-generator set (GT) is utilized by guiding them through a heat exchanger (5) which is operatively connected to a hot-air turbo-generator set (LT). A compressor (7) associated with this hot-air turbo-generator set (LT) is operated isothermally by means of point-focused or continuous water injection (24), and, after expansion (6) has taken place, the injected water is collected by condensation (19) in a separator (10). A circuit is thus provided, in which the adaptation of assemblies in order to achieve maximized efficiency is avoided.
Claims4
A method for operating a gas turbo-generator set with single stage or multistage combustion, comprising the steps of
- providing a heat exchanger for further utilization of the caloric potential of exhaust gases from a turbine associated with the gas turbo-generator set, wherein a hot-air turbo-generator set is operatively connected to the heat exchanger;
- approximately simulating isothermal compression by water injection which is carried out in a compressor associated with the hot-air turbo-generator set;
- and
- after expansion has taken place by an expander, collecting the injected water by condensation in a separator.
The method as claimed in claim l, wherein the water is collected in the separator is recirculated for water injection into the compressor.
Dependencies are inferred from the claim text.