The present disclosure is directed to an oil-free gas turbine engine. The gas turbine engine includes a compressor section, a combustion section, a turbine section, and an exhaust nozzle section. Further, the gas turbine engine includes at least one rotary component configured to drivingly connect at least a portion of the turbine section to at least a portion of the compressor section. Moreover, the gas turbine engine includes one or more gas-lubricated bearings configured to support the rotary component. In addition, the gas turbine engine includes a direct-drive starter-generator configured to start the gas turbine engine. Thus, the gas turbine engine of the present disclosure provides an engine that is at least partially oil free.

Embodiments of a stage for a turbomachine have been provided herein. In some embodiments, a stage for a turbomachine may include a bearing having a housing, the bearing defining an interior cavity; an outer ring disposed radially outward from the housing; and a plurality of airfoils disposed between the housing of the bearing and the outer ring.

Embodiments of a stage for a turbomachine have been provided herein. In some embodiments, a stage for a turbomachine may include a bearing having a housing, the bearing defining an interior cavity; an outer ring disposed radially outward from the housing; and a plurality of airfoils disposed between the housing of the bearing and the outer ring.

Method for operating a solar installation. The solar installation includes a solar field with direct evaporation accompanied by the generation of superheated live steam, a turbine for expanding the live steam, and a generator driven by the turbine for generating electrical energy. At least one valve is associated with the turbine by which the amount of live steam fed to the turbine is adjusted. The valve, or each valve, through which the amount of live steam fed to the turbine is adjusted such that an actual value of a live steam pressure occurring upstream of the turbine follows a reference value determined depending on a live steam temperature of the live steam upstream of the turbine.

Method for operating a solar installation. The solar installation includes a solar field with direct evaporation accompanied by the generation of superheated live steam, a turbine for expanding the live steam, and a generator driven by the turbine for generating electrical energy. At least one valve is associated with the turbine by which the amount of live steam fed to the turbine is adjusted. The valve, or each valve, through which the amount of live steam fed to the turbine is adjusted such that an actual value of a live steam pressure occurring upstream of the turbine follows a reference value determined depending on a live steam temperature of the live steam upstream of the turbine.

A bearing includes a bearing pad for supporting a rotary component and a housing attached to or formed integrally with the bearing pad. The housing defines a first fluid damper cavity positioned adjacent to the bearing pad and a second fluid damper cavity spaced from the first fluid damper cavity. The first and the second fluid damper cavities are in restrictive flow communication. The housing is configured to transfer a fluid from the first fluid damper cavity to the second fluid damper cavity in response to a force acting on the bearing pad to dampen a movement of the bearing pad.

A cooling device for an internal combustion engine including: an ebullient cooling system in which a refrigerant cools the internal combustion engine by boiling in the internal combustion engine, and a rankine cycle system including a superheater that superheats the refrigerant discharged from the internal combustion engine, a turbine to which the refrigerant discharged from the superheat is supplied, and a condenser that condenses the refrigerant discharged from the turbine; wherein the rankine cycle system includes a supply path that supplies a liquid-phase refrigerant discharged from the condenser to a shaft part of the turbine, and a first supply part of the condenser to which the refrigerant discharged from the turbine is supplied is arranged higher than the shaft part of the turbine in a gravity direction.

A turbomachine includes a compressor section, a turbine section, and a rotary component. The rotary component is attached to and rotatable with a portion of at least one of the compressor section and the turbine section. The turbomachine additionally includes a seal having a gas bearing. The gas bearing defines an inner surface along a radial direction of the turbomachine, a high pressure end, and a low pressure end. The gas bearing supports the rotary component and also prevents an airflow from the high pressure end to the low pressure end between the rotary component and the inner surface of the gas bearing.

A turbomachine includes a compressor section, a turbine section, and a rotary component. The rotary component is attached to and rotatable with a portion of at least one of the compressor section and the turbine section. The turbomachine additionally includes a seal having a gas bearing. The gas bearing defines an inner surface along a radial direction of the turbomachine, a high pressure end, and a low pressure end. The gas bearing supports the rotary component and also prevents an airflow from the high pressure end to the low pressure end between the rotary component and the inner surface of the gas bearing.

A turbomachine includes a rotating group with a turbine wheel. The turbomachine also includes a housing that houses the rotating group, wherein the housing defines a turbine outlet passage for exhaust from the turbine wheel. The turbine outlet passage is directed in a downstream direction along an axis of the turbine outlet passage. The turbomachine includes an air bearing system with at least one bearing component that supports the rotating group for rotation relative to the housing. The air bearing system includes a bearing cooling path that is fluidly connected to the at least one bearing component and that has a bearing air line outlet. The bearing air line outlet is fluidly connected to the turbine outlet passage and is directed in the downstream direction along the axis.