Gas turbine with solar heated steam injection system
AssigneeDeutsches Zentrum fuer Luft- und Raumfahrt e.V.
InventorKlaus Hennecke
Life of this patent
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Abstract
The energy generating installation comprises a gas turbine (10) which is operated by steam injected via a steam line (16). The outlet (18) of the gas turbine (10) is connected with the heat exchanger (21) of a waste heat boiler (19). The waste heat boiler (19) contains a steam drum (22) connected to a preheater (24) and a steam generator (23) of the heat exchanger (21). According to the invention a solar steam generator (36) is connected to the steam drum (22) in a second circuit (39). The steam produced by the solar steam generator (36) is heated in a superheater (22) and then used for steam injection purposes. The energy generating installation offers high flexibility at high efficiency despite the unreliable availability of solar energy.
Claims8
An energy generating installation comprising:
- a gas turbine (10) for operating a power generator (11);
- a waste heat boiler (19) including a steam drum (22) and a heat exchanger (21) connected to an outlet (18) of the gas turbine (10);
- the heat exchanger (21) including:
- a superheater (42) for heating steam supplied from the steam drum (22) and for feeding the heated steam to the gas turbine (10) for steam injection purposes,
- an evaporator (23) and the steam drum (22) at least in part defining a first circuit (27), and
- a preheater (24) for heating feedwater and for feeding the heated feedwater to the steam drum (22);
- and
- a solar steam generator (36) being connected to the steam drum (22) and defining therewith a second circuit (39), the second circuit (39) including a pump (40), and a water level sensor (33) for controlling the pump (40) in inverse relationship to changes in water level (32) in the steam drum (22).
An energy generating installation comprising:
- a gas turbine (10) for operating a power generator (11);
- a waste heat boiler (19) including a steam drum (22), and a heat exchanger (21) connected to an outlet (18) of the gas turbine (10);
- the waste heat boiler (19) further including a burner (34) directly controlled by a flowmeter (35) responsive to steam flow leaving the steam drum (22);
- the heat exchanger (21) including:
- a superheater (42) for heating steam supplied from the steam drum (22) and for feeding the heated steam to the gas turbine (10) for steam injection purposes,
- an evaporator (23) and the steam drum (22) at least in part defining a first circuit (27), and
- a preheater (24) for heating feedwater and for feeding the heated feedwater to the steam drum (22);
- and
- a solar steam generator (36) being connected to the steam drum (22) and defining therewith a second circuit (39).
Dependencies are inferred from the claim text.