A fan brake system for controlling an industrial fan system, the fan brake system including a fan brake having a brake pad movable on the fan brake to selectively engage the fan system. An actuator including a motor can be operable to cause the fan brake to perform a braking procedure on the fan system to resist rotational movement of the fan system. A controller can be communicated with the actuator, the controller operable to selectively cause the actuator and the fan brake to perform the braking procedure, wherein the controller is operable to monitor and control power being supplied to the motor of the actuator during the braking procedure to maintain a torque output of the motor according to a predetermined torque profile during the braking procedure.

An aircraft air provision system includes a power turbine that receives bleed air at a first pressure and provides rotational energy to a shaft and outputs output air at an intermediate pressure. The system also includes a compressor coupled to the shaft that receives input air at a second pressure that is lower than the first pressure and outputs compressed air having a pressure equal to the intermediate pressure and a mix chamber coupled to outputs of both the power turbine and the compressor where the output air and the compressed air are mixed. The system also includes a cooling turbine coupled to the shaft and that is in fluid communication with an output of the mix chamber.

Provided is a small nuclear power generator which restores steam to water by applying pressure to the inside of a condenser using a pressurizer disposed over the condenser without condensing steam using cooling water. The small nuclear power generator includes: a nuclear reactor generating high-temperature heat by nuclear fission of a nuclear fuel; a steam generator converting internal water into steam by the high-temperature heat generated in the nuclear reactor; a turbine/generator including a steam turbine rotated by steam generated in the steam generator and a generator connected to an axis of the steam turbine and together rotating to produce electricity; and a condenser restoring steam to water by applying pressure to steam discharged after rotating the steam turbine using two or more pressurizers, again supplying the water into the steam generator, and formed of a titanium (Ti) or an alloy thereof.

Provided is a small nuclear power generator which restores steam to water by applying pressure to the inside of a condenser using a pressurizer disposed over the condenser without condensing steam using cooling water. The small nuclear power generator includes: a nuclear reactor generating high-temperature heat by nuclear fission of a nuclear fuel; a steam generator converting internal water into steam by the high-temperature heat generated in the nuclear reactor; a turbine/generator including a steam turbine rotated by steam generated in the steam generator and a generator connected to an axis of the steam turbine and together rotating to produce electricity; and a condenser restoring steam to water by applying pressure to steam discharged after rotating the steam turbine using two or more pressurizers, again supplying the water into the steam generator, and formed of a titanium (Ti) or an alloy thereof.

Large scale field erected air cooled industrial steam condenser having heat exchanger panels with primary and secondary condenser sections, in which the secondary condenser section comprises 10% or less of the total heat exchanger, and in which the tubes of the primary condenser sections have narrowed outlet orifices having an area that is 50% or less than the cross-sectional area of a corresponding tube. The invention permits the reduction of secondary condenser tubes while reducing the outlet header pressure sufficiently to minimize backflow, sweep non-condensables and prevent the formation of dead zones.