Ansaldo Energia Switzerland

Gas turbine unit comprising a compressor (2), a turbine (5) a combustor assembly (3) and a fuel supply assembly (4) configured to supply at least one first-stage fuel to the combustor assembly (3); the combustor assembly (3) comprising at least one combustor unit (7) provided with a liner (16) extending substantially along a combustor axis (B); the combustor unit (7) comprising a first-stage combustor (8) and a second-stage combustor (9), which is arranged downstream the first-stage combustor (8) along the gas flow direction (G); the first-stage combustor (8) comprising a first-stage burner (11), which is fed with first-stage air coming from the compressor (2) and first-stage fuel coming from the fuel supply assembly (4), and a first-stage combustion chamber (12), where the first-stage fuel is burned; the first-stage fuel being an ammonia-based fuel; wherein the second-stage combustor (9) comprises a second-stage burner (13) and a second-stage combustion chamber (14); the second-stage burner (13) being arranged downstream of the first-stage combustion chamber (12); the second-stage combustion chamber (14) being fed with hot gas leaving the first-stage combustion chamber (12) and passing through the second-stage burner (13) and with dilution air; the fuel supply assembly (4) being configured to supply the at least one first-stage fuel to the first-stage burner (11) so as the combustion stoichiometry of the first-stage burner (11) is unbalanced and an excess of first-stage fuel is present in the first stage burner (11) to obtain unburned first-stage fuel reaching the second-stage burner (13).

A combustor assembly (3) for a gas turbine unit (1) comprises at least one combustor unit (7) provided with a liner (16) extending substantially along a combustor axis (B); the combustor unit (7) comprising a first-stage combustor (8) and a second-stage combustor (9), which is arranged downstream the first-stage combustor (8) along the gas flow direction (G); the first-stage combustor (8) comprising a first-stage burner (11), fed with first-stage fuel and first-stage air, and a first-stage combustion chamber (12), where the first-stage fuel is burned; wherein the second-stage combustor (9) comprises a second-stage burner (13) and a second-stage combustion chamber (14); the second-stage burner (13) being arranged downstream of the first-stage combustion chamber (12); the second-stage combustion chamber (14) being fed with hot gas leaving the first-stage combustion chamber (12) and passing through the second-stage burner (13), with dilution air and with a second-stage fuel; wherein the dilution air and the second-stage fuel are injected simultaneously within the second-stage burner (13).

A hybrid power plant includes a nuclear source generator assembly (2), configured to provide a primary electric power (W_EP) from a nuclear source; an electrolyzer (3) operable to produce a first mixture (M1) containing hydrogen and a second mixture (M2) containing oxygen from a water flow (FW); a hydrogen storage system (5), coupled to the electrolyzer (3) to receive hydrogen from the first mixture (M1); an oxygen storage system (6), coupled to the electrolyzer (3) to receive oxygen from the second mixture (M2); and a hydrogen generator assembly (7), operable to produce a secondary electric power (W_ES) using the hydrogen from the hydrogen storage system (5) and the oxygen from the oxygen storage system (6). A power divider (8), coupled to a distribution grid (15) and to the electrolyzer (3), is configured to controllably divide the primary electric power (W_EP) between the distribution grid (15) and the electrolyzer (3).

A hybrid power plant includes a nuclear source generator assembly (2), configured to provide a primary electric power (WEP) from a nuclear source; an electrolyzer (3) operable to produce a mixture (M) containing hydrogen from an inlet water flow (FWI) in the vapour and/or liquid phase; a hydrogen storage system (5), coupled to the electrolyzer (3) to receive hydrogen from the mixture (M); and a hydrogen generator assembly (7), operable to produce a secondary electric power (WES) using the hydrogen from the hydrogen storage system (5). A power divider (8), coupled to a distribution grid (15) and to the electrolyzer (3), is configured to controllably divide the primary electric power (WEP) between the distribution grid (15) and the electrolyzer (3) .

A gas turbine engine includes a compressor (2), a combustor (3), a turbine (5), a primary supply system (6) supplying a primary fuel (F1) containing ammonia, a secondary supply system (7) supplying a secondary flow (F2) containing air and/or a fuel, and a control system (8). The combustor (3) includes a combustion chamber (12), a plurality of burner assemblies (10), each having a respective reaction zone (Zt) inside the combustion chamber (12), and a plurality of injectors (11), configured to inject the secondary fluid (F2) downstream of the reaction zones (Zt) of the burner assemblies (10). The control system (8) is configured to control the primary supply system (6) so that the burner assemblies (10) transform a first mixture having a first fuel-air equivalence ratio (ϕ1) greater than 1 in the reaction zone (Zt) and to control the primary supply system (6) so that the injectors (11) inject the secondary fluid (F2) into the combustion chamber (12) with a second fuel-air equivalence ratio (ϕ2) lower than 1.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …