Embodiments of the present disclosure include a method for controlling a power generation system, the method including: calculating, during operation of the power generation system, a target water level within a pressure vessel of the power generation system, the pressure vessel receiving a feedwater input and generating a steam output; calculating a flow rate change of the steam output from the pressure vessel; calibrating the target water level within the pressure vessel based on the output from mass flux through the pressure vessel, the mass flux through the pressure vessel being derived from the at least the feedwater input and the steam output; and adjusting an operating parameter of the power generation system based on the calibrated target water level within the pressure vessel.

A system for deriving 100% quality steam for steam assisted gravity drainage (SAGD) injection or other applications features a once through steam generator (OTSG), a steam-water separator connected downstream of the OTSG's radiant tubes to separate steam and water from a two-phase flow received therefrom, superheater tubes installed in the convection section and connected to a steam outlet of the steam-water separator in downstream relation thereto to receive and heat dried steam therefrom to a superheated state, and a desuperheater connected downstream of the superheater tubes to receive the superheated steam therefrom and use same to vaporize blowdown water from the steam-water separator, whereby the vaporized blowdown water and the superheated steam collectively form a superheated steam output for the intended application, typically after additional separation of solid particles therefrom for optimal steam quality.

A desuperheating spray chamber for use in a rocket exhaust recovery system for a nuclear thermal propulsion rocket, including a substantially-cylindrical outer tank with an upper end including an entrance port and two exhaust ports, a substantially-cylindrical shroud extending downwardly from an inner surface of the upper end of the tank, an annular inner spray ring that is both disposed within and concentric with the shroud; and an annular outer spray ring that is disposed between a side wall of the outer tank and the shroud, the annular outer ring being concentric with the shroud.

The invention relates ton attemperator. It has a pipe section (3) and a liner pipe section (4) arranged within the pipe section (3) and being attached thereto. The pipe section (3) has an internal wall surface (33) and the liner pipe section (4) has an external wall surface (43). The internal wall surface (33) and external wall surface (43) form a gap (6) between them. The pipe section (3) and liner pipe section (4) each has an inlet end (31, 41) for connection to a steam supply and an outlet end (32, 42) for steam. The attemperator is provided with water injection means (2) arranged for supplying water into the interior of the liner pipe section (4). The inlet end (31) of the liner pipe section (3) has an outwardly extending wall portion (44) forming an outer circumferential outer zone (45), which zone (45) may contact the internal wall surface (33) of the pipe section (3). According to the invention there is provided a plurality of openings (47) arranged to allow steam to enter the space formed by the gap (6) between the internal wall surface (33) and the external wall surface (43). The invention also relates to a use of the attemperator.

Spray heads for use with desuperheaters and desuperheaters including such spray heads. One example of a spray head includes a main body having an exterior surface and defining a central passage, the main body adapted for connection to a source of fluid, at least one entrance port formed in the main body along the central passage, and at least one spray nozzle arranged adjacent the exterior surface of the main body. The spray head also includes a plurality of flow passages, each of the plurality of flow passages providing fluid communication between the entrance port and an exit opening of the spray nozzle. A first one of the plurality of flow passages follows a first non-linear path and has a first distance, and a second one of the plurality of flow passages follows a second non-linear path and has a second distance different from the first distance.

Spray heads for use with desuperheaters and desuperheaters including such spray heads. One example of a spray head includes a main body having an exterior surface and defining a central passage, the main body adapted for connection to a source of fluid, at least one entrance port formed in the main body along the central passage, and at least one spray nozzle arranged adjacent the exterior surface of the main body. The spray head also includes a plurality of flow passages, each of the plurality of flow passages providing fluid communication between the entrance port and an exit opening of the spray nozzle. A first one of the plurality of flow passages follows a first non-linear path and has a first distance, and a second one of the plurality of flow passages follows a second non-linear path and has a second distance different from the first distance.

A steam generator system configured to burn hydrogen and oxygen at stoichiometry along with a high-pressure water and steam. Said steam generator system comprise a hydrogen source, an oxygen source, a nitrogen source, a water source, a steam source, a hydrogen-oxygen handling unit, a cooling unit, a one or more H2-O2 steam generators and a control unit. Said steam generator system is configured to provide said hydrogen source to said hydrogen-oxygen handling unit through an oxygen passage, said oxygen source to said hydrogen-oxygen handling unit through a hydrogen passage, and said nitrogen source to selectively purge said oxygen passage and said hydrogen passage. Said water source provide water to said cooling unit. Said cooling unit is configured to receive said water source and said steam source.

A nozzle assembly for spraying cooling fluid in a steam-desuperheating device, includes: a nozzle body; a plug element movably attached to the nozzle body; and a splitter member fixed to a front face of the plug element. The splitter member has at least one splitter arm extending across the flow passage formed in the nozzle body as viewed from the front of the plug element to deflect flow of fluid sprayed through the flow passage.

The invention relates ton attemperator. It has a pipe section (3) and a liner pipe section (4) arranged within the pipe section (3) and being attached thereto. The pipe section (3) has an internal wall surface (33) and the liner pipe section (4) has an external wall surface (43). The internal wall surface (33) and external wall surface (43) form a gap (6) between them. The pipe section (3) and liner pipe section (4) each has an inlet end (31, 41) for connection to a steam supply and an outlet end (32, 42) for steam. The attemperator is provided with water injection means (2) arranged for supplying water into the interior of the liner pipe section (4). The inlet end (31) of the liner pipe section (3) has an outwardly extending wall portion (44) forming an outer circumferential outer zone (45), which zone (45) may contact the internal wall surface (33) of the pipe section (3).

According to the invention there is provided a plurality of openings (47) arranged to allow steam to enter the space formed by the gap (6) between the internal wall surface (33) and the external wall surface (43).

The invention also relates to a use of the attemperator.

A desuperheater includes a ring body defining an axial flow path and one or more spray nozzle assemblies around the ring body. Each spray nozzle assembly is connected to a separate water manifold and steam manifold to provide cooling water and atomizing steam through the spray nozzle assemblies. A nozzle sleeve of each spray nozzle assembly has a solid, unitary body having first, second, and third fluid passages formed through the body. The first fluid passage is in fluid communication with the water manifold and with a first exit aperture formed in a second end of the body. The second fluid passage is in fluid communication with the steam manifold and with a second exit aperture formed in the second end of the body. The third fluid passage is in fluid communication with the steam manifold and with a third exit aperture formed in the second end of the body. The second and third exit apertures are positioned on opposite sides of the first exit aperture.