Abstract: A power generating system includes a main engine operated over a range of speeds, an electric generator, and a hydrostatic transmission drivably connecting the engine with the generator to drive the generator at a desired speed. The hydrostatic transmission includes one or more variable pumps. A controller monitors the pump pressure and the generator frequency. The pressure set point is used with the monitored pressure to control the pump output. The pressure set point varies with the generator load, and is adjusted based on the deviation of the generator frequency from a predetermined desired electric power frequency. When multiple pumps are used to drive the motor, the pumps are operated sequentially such that all except one pump is either off or at maximum output.

Abstract: A power generating system includes a main engine operated over a range of speeds, an electric generator, and a hydrostatic transmission drivably connecting the engine with the generator to drive the generator at a desired speed. The hydrostatic transmission includes one or more variable pumps. A controller monitors the pump pressure and the generator frequency. The pressure set point is used with the monitored pressure to control the pump output. The pressure set point varies with the generator load, and is adjusted based on the deviation of the generator frequency from a predetermined desired electric power frequency. When multiple pumps are used to drive the motor, the pumps are operated sequentially such that all except one pump is either off or at maximum output.

Abstract: The invention relates to a device by sprinkler nozzle (1) for use in a sprinkler system. The sprinkler nozzle (1) comprises a sprinkler nozzle housing (2) with a passage (3) therethrough for liquid, and a sprinkler nozzle pin (4, 5) which is disposed in the passage (3) of the sprinkler nozzle housing (2). The purpose of the invention is to provide a sprinkler nozzle which spreads the liquid by a sufficient distance from the outlet of the sprinkler nozzle (1) both in a horizontal and in a vertical direction. This is realized by the sprinkler nozzle pin being constituted by an inner sprinkler nozzle pin part (4) which is fixed to the sprinkler nozzle housing (2), and an outer sprinkler nozzle pin part (5) which is displaceably arranged in the sprinkler nozzle housing (2). Further, the sprinkler nozzle pin parts (4, 5) are arranged coaxially to the passage (3) of the sprinkler nozzle housing (2).

Abstract: The structural part is used in an electolytic cell for production of aluminum and comes into contact with the gas atmosphere in the electrolytic reduction cell. The structural part is made completely from, or is a metal part which is coated with, a concrete composition of 15-30% by weight of a hydraulic cement, 5-10% by weight of microsilica and 65-85% by weight of a refractory filler material.