Abstract: A liquid cooled armature winding for a dynamoelectric machine having rectangular hollow cooling strands, wherein the cooling conduit is bounded by a continuous wall of varying wall thickness designed to minimize stress due to cyclical forces on the strand walls. Conduits of elliptical and rhomboidal cross-section are disclosed.

Abstract: A three phase four pole synchronous generator winding is shown, having three parallel connected circuits per phase, for a stator with 63 winding slots, each circuit having seven series connected coils, with particular application to very large nuclear or fossil fuel generators and with emphasis on low cost.

Abstract: A state-of-the-art power plant in which the heat from solid or low quality fuels is utilized to heat indirectly a motive stream composition of a mixture of steam and gases to drive a gas turbine. The thermal energy from the burning of the solid or low quality fuels is also utilized to generate steam which powers a steam turbine. Excess steam may be generated to be utilized as process steam.

Abstract: The present invention provides an improvement in the art of combined steam turbine and gas turbine power plants of the type wherein the principal source of energy is a fluidized bed combustor fueled by coal. More specifically, the invention pertains to supplemental firing of the gas turbine cycle with a clean hydrocarbon fuel (CHF) at a high incremental efficiency to significantly increase overall plant efficiency.

Abstract: An improved combined cycle gas turbine and steam turbine power plant is disclosed in which the energy source for both the steam turbine portion of the system and the gas turbine portion is a pressurized fluidized bed combustor fueled by a carbonaceous fuel such as coal. Combustion gas discharged from the pressurized combustor is processed for minimal cleanup and temperature conditioning prior to passage through a heat exchanger to heat a stream of pressurized air for driving an air-gas turbine. Following the loss of sensible heat energy through the heat exchanger, the lower temperature combustion gas is expanded through a second, combustion gas turbine so that a portion of the remaining energy is extracted at a lower temperature, avoiding problems of hot gas corrosion and fouling within the turbine. A compressor, driven by one or both gas turbines, provides both the pressurized air supply for fluidization of the bed and the stream of air to the air-gas turbine.

Abstract: A combined cycle steam and gas power plant is disclosed in which energy for generating steam to drive a steam turbine and for heating air to drive a gas turbine is provided by combustion of a single carbonaceous sulfur-bearing fuel such as coal at nearly atmospheric pressure in a sulfur-sorbing fluidized bed combustor. Fluidizing and combustion air for the combustor is furnished by exhaust from the gas turbine, and an air heat exchanger within the combustor allows indirect heating of air for driving the gas turbine so that corrosion of gas turbine hardware by the products of combustion is avoided.