Air reservoir turbine
AssigneeABB Management AG
InventorHans U. Frutschi
Life of this patent
Estimating the term…
Abstract
In an air reservoir turbine, comprising a gas turbine group connected for selectable delivery of compressed air from a compressor unit and a compressed air reservoir, and including a hot water reservoir and a waste heat steam generator downstream of the gas turbine group, an amount of steam from the waste heat steam generator is introduced into the gas turbine group and is used for increasing its output. Additionally, hot water from various intercoolers and a heat exchanger is generated in connection with the compressor unit of the gas turbine group. The amount of steam obtained therefrom is admixed to the compressed working air and is used as combustion air for operating the gas turbine group.
Claims12
An air reservoir turbine installation having a gas turbine group connected to a compressed air reservoir, and comprising a hot water reservoir, a waste heat steam generator connected to receive an exhaust gas flow downstream of the gas turbine, the gas turbine group comprising a compressor unit, at least one combustion chamber and at least one turbine, wherein the waste heat steam generator is connected to introduce steam into the gas turbine group for increasing an output of the at least one turbine, and further comprising at least one heat exchanger to cool working air compressed by the compressor unit and a partial pressure evaporator to introduce water vapor into the working air, the at least one heat exchanger being connected to deliver heated water to the partial pressure evaporator.
A method for operating an air reservoir turbine installation having a gas turbine group connected to a compressed air reservoir as a selectable source of compressed air, and comprising a hot water reservoir, a waste heat steam generator connected to receive an exhaust gas of the gas turbine, the gas turbine group comprising a compressor unit with heat exchangers to cool compressed air, at least one combustion chamber and at least one turbine, the method comprising the steps of:
- introducing steam generated in at least one pressure stage in the waste heat steam generator to working air in the at least one combustion chamber or immediately downstream of the at least one combustion chamber;
- injecting heated water generated in the heat exchangers into a partial pressure evaporator to produce vapor under partial pressure;
- and
- introducing the vapor into the working air upstream of the at least one combustion chamber.
Dependencies are inferred from the claim text.