Rosen Motors, L.p.

Fmc Corporation

Chris C Pearson

Robert W Bosley

Daniel Bakholdin

Harold A Rosen

Scott B Pano

A flywheel assembly for storing energy and rotatable in response to the rotation of a shaft includes a hub having a transition portion having a constant stress intermediate region operatively coupled to the shaft and an outer connecting portion forming a flexible cylinder, wherein the shaft and the flexible cylinder are substantially coaxial, and an outer cylinder wherein a majority of the mass of the flywheel assembly is concentrated. The flexible cylinder includes connecting pads disposed at opposing edges of the outer side of the flexible cylinder thereby permitting connection to the outer cylinder. The outer cylinder increases radially responsive to a corresponding increase in rotational speed of the flywheel assembly, while the diameter of the transition portion of the hub follows the radial increase of the outer cylinder.

Hub and cylinder design for flywheel system for mobile energy storage

A flywheel assembly used for mobile energy storage incorporates a molecular pump and an internal chamber containing molecular sieves. The molecular pump shares the shaft, bearings, and motor of the flywheel rotor, and maintains the high vacuum desired in the vicinity of the flywheel rotor. The gases which evolve from the rotor during its operational life are pumped into the chamber containing the molecular sieves where they are adsorbed.

Flywheel energy storage system with integral molecular pump

A system for performing an oxygenation process within a body of sewage at atmospheric pressure includes an oxygen absorber coupled to an oxygen supply at superatmospheric pressure. A storage vessel has an elongate chamber therein which is oriented vertically in the system. Pipes and valves are coupled to the upper and lower ends of the chamber so that the chamber is alternately communicated with the oxygen absorber and the body of sewage, thereby providing alternate high pressure and low pressure half cycles respectively. Initially, oxygenated liquor at superatmospheric pressure is in the oxygen absorber and the elongate chamber is filled with a quantity of low oxygen content liquor at atmospheric pressure. The valves are then operated during the high pressure half cycle to admit oxygenated liquor into the elongate chamber through the lower end and to simultaneously expel liquor and undissolved oxygen from the upper end into the oxygen absorber. The valves are then operated during the low pressure half cycle to reduce the chamber pressure to atmospheric and to admit a quantity of liquor from the body of sewage into the elongate chamber through the top end while simultaneously expelling the oxygenated liquor from the bottom end into the body of sewage. Thus, oxygen which comes out of solution and collects as relatively large bubbles as the pressure in the chamber is reduced to atmospheric pressure, will be retained in the elongate chamber and returned to the oxygen absorber during the next high pressure half cycle. A preferred embodiment of the invention includes two or more storage vessels alternately operated during the high and low pressure half cycles to provide a substantially continuous flow of liquor into and out of the pressurized oxygen absorber.

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Woodside, CA, United States of America

Chris C Pearson