Showing papers on "Power station published in 1977"

Regenerative heat storage in compressed air power system

Abstract: A compressed air power plant is disclosed wherein compressed air may be stored underground and later utilized as required. The storage facilities include a heat storage covern which contains an external water barrier and a heat insulating lining. Compressed air flows from the power plant in series through the heat storage cavern and then to an air storage cavern.

Mobile electric power generating systems

Abstract: An improved mobile electric power generating system comprising a substantially enclosed trailer for housing a power plant is disclosed. The improvements reside in removable means permitting access to the interior of the trailer enclosure for facilitating improved assembly and maintenance of the power plant. Additional features permit improved operation of the system, and improved methods for assembling the same.

Submarine turbine power plant

Abstract: A power plant for the generation of electricity from the flow of water currents uses turbine wheels within nozzles submerged in the water current, anchored to the bottom of the water course, as for example, the ocean, and self-buoyed to a level well below the water surface Pairs of counter-rotating turbines are supported by their rims, which bear against friction drive wheels, which in turn drive electrical generators contained in water-tight machine rooms within the wall of the nozzle A structural design is disclosed, providing for the building of modules of the nozzle ashore, which modules may then be barged to the deep-water site for assembly into the whole power plant

Solar celled hybrid vehicle

Abstract: A front wheel driven, gas powered vehicle is converted to include a rear differential connected for power input to a first and second electrical motor, or a single electric motor if desired. When first and second electrical motors are used they are connected in parallel, the power input thereto being brought across a current limiting series of resistors to protect and control the current level thereto. A switching circuit connects in various series and parallel combinations a plurality of batteries and concurrently switches the necessary current limiting resistance. Thus a control combination is provided including a manual selector for the desired forward and reverse directions and the low and high current ranges which is further multiplied by the various resistances. In this configuration, the normally available gasoline power plant is retained in the vehicle and is augmented during periods of nonoptimal use by the above electric motor provisions. This electric power can be periodically replenished either by way of a charger or a set of solar panels placed on the roof of the vehicle.

Utility frame for mobile electric power generating systems

Abstract: An improved mobile electric power generating system comprising a substantially enclosed trailer for housing a power plant, and improved methods for assembling the same are disclosed. The improved system includes means defining a modular utility frame for carrying various support components of the system. Such support components may include a fuel storage tank, a start-up energy storage tank, a radiator, and power plant support apparatus.

Gas turbine power plant control apparatus including an ambient temperature responsive control system

Abstract: A gas turbine power plant is provided with an industrial gas turbine which drives a generator coupled to a power system through a breaker. The turbine-generator plant is operated by a hybrid control system having digital function capability during sequenced startup, synchronizing, load buildup and steady state load, and shutdown operations. The control system also contains monitoring and protective subsystems which function through all stages of operation, with redundancy and permissive features which maximize turbine availability.

Combined compressed air storage-low BTU coal gasification power plant

Abstract: An electrical generating power plant includes a Compressed Air Energy Storage System (CAES) fueled with low BTU coal gas generated in a continuously operating high pressure coal gasifier system. This system is used in coordination with a continuously operating main power generating plant to store excess power generated during off-peak hours from the power generating plant, and to return the stored energy as peak power to the power generating plant when needed. The excess coal gas which is produced by the coal gasifier during off-peak hours is stored in a coal gas reservoir. During peak hours the stored coal gas is combined with the output of the coal gasifier to fuel the gas turbines and ultimately supply electrical power to the base power plant.

Coal-fired open cycle magnetohydrodynamic power plant emissions and energy efficiences

Abstract: Sponsored by U.S. Environmental Protection Agency, Contract #68-02-2146. Sponsored under a subcontract to Exxon Research and Engineering Company.

Power plant for simultaneously generating electric power and pneumatic pressure

Abstract: A power plant for simultaneously generating electric power and pneumatic pressure which comprises an engine, dynamo and compressor all juxtaposed, and wherein the crankshaft of the engine is disposed on the axis of a common shaft to the dynamo and compressor to be drivingly coupled to the common shaft and jointly rotated with the common shaft, thereby simultaneously generating electric power and pneumatic pressure.

Modeling and simulation of a drum boiler-turbine power plant under emergency state control.

Abstract: Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.

Wind wheel apparatus for use with a hydro-electric dam

Abstract: Disclosed herein is an apparatus for fashioning a wind wheel apparatus that utilizes the wheat field principle in association with a power generating station to provide back pumping in a dam environment to provide a greater efficiency. Specifically, a double array of wind wheels is disposed in a matrix on the horizontal plane oriented to address the angle of attack of the wind regardless of wind direction and is further provided with means to develop electrical current therefrom to be used in motivating pumping means for returning water that has generated electricity due to potential energy back into a reservoir. Thus the wind energy is stored in the reservoir as potential energy. Because of its low cost and abundance this energy is able to address the task of supplying energy to industries or municipalities engaged in processing and pumping of large quantities of ocean water to any desirable elevation.

Reliability evaluation of the auxiliary electrical systems of power stations

Abstract: This paper presents a novel approach to the reliability assessment of different designs of power station auxiliary electrical systems. This assessment evaluates the impact of the auxiliary system on the availability of the unit in terms of derated states of the unit. This technique permits the reliability cost to be calculated easily for different system designs. All realistic failure modes were taken into account. An efficient computer program using these techniques has been developed and was used to obtain the results presented in this paper.

Fuel cell power generating stations

Abstract: An integrated power generating plant includes a fuel cell for generating electrical energy directly, an auxiliary power generating plant that utilizes both the sensible heat and the heating value of effluents from the fuel cell by using working fluids in a closed cycle. The working fluid is vaporized by sensible heat and is superheated by combusting incompletely reacted fuels from the fuel cell.

Metal-hydrogen secondary battery system

Abstract: OF THE DISCLOSURE The improved system of the present invention comprises a plurality of electrically interconnected power modules, each module comprising a sealed pressure vessel containing a volume of hydrogen and a plurality of batteries connected in parallel and disposed in a removable rack. Each battery comprises a stack or pile of series connected metal-hydrogen cells. Means are provided for recirculating the hydrogen in the vessel around and between the cells and for cooling the hydrogen. The cooling operation for the modules may be carried out internally or externally of the vessel. A blower or the like may facilitate the recirculation of the hydrogen.The modules are series connected to supply a desired large amperage, for example to take care of peak load requirements for a commercial power generating station or the like. The system is capable of rapidly absorbing power from the station during periods of low demand and rapidly releasing the power during peak loads so as to level the load requirements. The system provides optimum performance over a long period of time at low cost.

Engine cooling system for an agricultural vehicle

Abstract: A cooling system for the power plant of a self-propelled forage harvester or field chopper, generally located in the rear thereof, comprises an air chamber communicating with the atmosphere through laterally disposed filter screens and water-cooling radiators and through pairs of conical half-shells disposed point-symmetrically about ventilating fans integral with a unidirectionally rotatable shaft extending longitudinally in an opening in the top wall of the chamber. The shells, rigid with a support manually pivotable about the power-plant-driven shaft, normally direct air flow through the fans from the air chamber but may be rotated 180° by a vehicle operator to temporarily reverse the air flow and pressurize the chamber, thus forcing air out through the radiators and filter screens, cleaning them of clogging debris collected during normal operation of the vehicle. Sealer strips provided around the openings in the air chamber for minimizing leakage.

Irrigation energy requirements in the 17 western states

Abstract: Data are presented on the quantity of fuel of various types used to pump irrigation water in each producing area of the 17 Western states. These data were computed on the basis of pumping lift, mix of distribution systems, mix of power units, and average pump and power plant efficiencies. An average of 863 thousand kcal is required per A-ft of water, supplied mainly by natural gas and electricity.

Methods of and thermodynamic apparatuses for power production

Abstract: An improved binary cycle sulphur-water power plant comprising a closed topping sulphur loop and a water loop. The sulphur is vaporized in a heat exchanger where it is at approximately the same pressure as a heating fluid (combustion gas or coolant of a nuclear reactor for instance).

Pressure fluid operated power plant

Abstract: A piston type power plant operable by any suitable pressure fluid available such as natural gas from a well for stationary applications, etc., or by compressed air in either stationary or mobile applications such as driving generators, saw mills or vehicles, etc., and embodying novel valve actuation and control means.

Status Report on Closed-Cycle Power Plants in the Federal Republic of Germany

Abstract: In recent years the constructors as well as the users of municipal and industrial power plants have shown a rising interest in the closed-cycle gas turbine. Because of its ability to deliver a large amount of heat without restrictions to the electric power generation, the closed-cycle gas turbine is most favorably qualified for central district heating of large residential quarters. In this paper these aspects of the closed-cycle will be illustrated in the frame of five closed air turbine plants, being in operation in the FRG. The layout of and the operation experience gained with these plants will be discussed. These municipal and industrial power plants are fueled by coal, oil, gas, or even mixtures of these. The special items in the layout of the heaters with respect to the different fuels are shown; the perspectives for further design are discussed.

On-site investigation of electrohydraulic governors for water turbines

Abstract: Hydroelectric generating sets controlled by conventional, mechanical, temporary-droop governors respond rather slowly to changes in system frequency and do not, therefore, realise their full potential as spinning reserves. Because of this, the electrohydraulic governor system described in this paper was developed for on-site evaluation of control strategies on a 32.5 MW set at Sloy power station, and to complement earlier work on a hybrid simulation of the plant. It is arranged so that it can be used as an alternative to the mechanical governor, and changeover from one to the other can be effected in a few minutes. Frequency-response test data are presented. Also shown are the results of a series of system-splitting tests in each of which a substantial area of West Scotland was supplied by the Sloy set when isolated from the Grid system. An electronic double-derivative governor is shown to improve greatly the response of the generator to frequency changes while at the same time preserving operational stability

Method of starting up a high-voltage d-c inverter or transmission station in isolated or island operation

Abstract: Method of starting up a station of a high-voltage d-c transmission system having at least two converters which with current and voltage regulators are connectible to d-c and three-phase networks or power plants and are selectively operable as rectifiers and inverters, and for starting up the three-phase network or power plant connected to the station, the station at the start-up time, being isolated from a functioning three-phase network or power plant and auxiliary equipment required for the operation thereof, which includes feeding from the d-c side of the high-voltage d-c transmission system active power required for starting up the station of the high-voltage d-c transmission system, and feeding from an independent reactive-power source reactive commutation power required for the start-up operation of the station of the high-voltage d-c transmission system as well as other reactive power required during the start up.

Method of electrical closed heat pump system for producing electrical power

Abstract: A method of electrical power generation is disclosed wherein the energy source to operate the said electrical power generation apparatus is that energy existing between two fluid sources being at different temperatures and therefore at different energy levels. These fluid sources could be as divergent as warm underground crude oil as it is pumped from wells and the cooler atmospheric air above the said oil wells, or as intimately related as the warm water output from conventional and nuclear power generating plants and the cooling water source usually available to such generating plants. Warm water pumped from deep below the earths surface, geo-thermally heated, as the warm or hot source and surface water from lakes, oceans, rivers, etc. as the colder, or lower energy source provides an additional source of energy for the method of electrical power generation herein described. Perhaps the largest source of waters, in which sufficient temperature differentials exist, are tropical ocean waters where temperature differences between the warm surface water and the cold deep ocean water, several thousand feet below the ocean surface, are often as high as 40° to 45° F.

Transition piece for power plant in mobile electric power generating systems

Abstract: In a mobile electric power generating system, means for mounting a power plant to a trailer bed are disclosed. Such means include a transition piece having a top flange adapted to be mounted to the power plant, a bottom flange, and intermediate plate means disposed between the top and bottom flanges. The intermediate plate means are arranged to absorb some of the twisting forces necessarily associated with the movement of the trailer bed. Means are further provided to secure the bottom flange of the transition piece to a main rail of the trailer bed without imparing the integrity of the main rail.