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AssigneeBBC Brown, Boveri & Company, Limited
InventorHansulrich Frutschi
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An arrangement for controlling the power output of a closed cycle type of thermodynamic system including shaft-coupled compressor and gas turbine components driving a load such as an electrical generator in which the gaseous working medium flows in a closed circulation system that includes a device for imparting heat to the gas and a storage tank for the gas connected in parallel with a section of the gas circulation system. In order to vary the power output, gas from the circulation system in a cold or hot state, respectively, is flowed through the tank for heat exchange with the gas in the tank such that as a result of the corresponding change produced in the density of the gas within the tank, gas is selectively withdrawn from or delivered into the circulation system.
In the method for controlling the power output of a closed cycle type of thermodynamic system such as a gas turbine power plant wherein a gaseous working medium circulates through components of the system including a heat exchanger, a compressor and a turbine in a closed circuit, the improvement wherein a storage tank for the gaseous working medium is connected in parallel with at least three sectional portions of the closed circuit and wherein gaseous working medium in a hot or cold state selectively is flowed through the storage tank such that due to the corresponding change in gas density within the tank, the gaseous working medium is selectively withdrawn from the closed circuit or the gaseous working medium is delivered into the closed circuit.
In the method for controlling the power output of a closed cycle type of thermodynamic system such as a gas turbine power plant wherein a gaseous working medium circulates through components including a heat exchanger, a compressor and a turbine in a closed circuit, the improvement wherein a storage tank for the gaseous working medium is connected in parallel with sectional portions of the closed circuit and wherein the gaseous working medium in a hot or cold state selectively is flowed through the storage tank in such manner as to indirectly heat or cool the gaseous working medium within the tank such that due to the corresponding change in gas density within the tank, the gaseous working medium is selectively withdrawn from the closed circuit or is delivered into the closed circuit.
Apparatus for controlling the power output of a closed cycle type of thermodynamic system such as a gas turbine power plant including a heat exchanger, a shaft-coupled compressor and a turbine, and a closed gaseous working medium circulation system including means for imparting heat to the gaseous working medium in circulation, a storage tank for the gaseous working medium connected in parallel with at least three sections of the gaseous working medium circulation system, and valve controlled means for selectively flowing a portion of the gaseous working medium in a hot or cold state respectively from the circulation system through said storage tank such that due to the corresponding change in gas density produced within said storage tank, the gaseous working medium is selectively withdrawn from or added to the gaseous working medium flowing in the system.
Apparatus for controlling the power output of a closed cycle type of thermodynamic system such as a gas turbine power plant including a heat exchanger, a shaft-coupled compressor and turbine and a closed gaseous working medium circulation system including means for imparting heat to the gaseous working medium in circulation, a storage tank for the gaseous working medium connected in parallel with a section of the gaseous working medium circulation system, and valve controlled means for selectively flowing a portion of the gaseous working medium in a hot or cold state respectively from the circulation system through said storage tank through a heat exchange coil located within said tank thereby effecting heat exchange with the gaseous working medium stored within the tank in an indirect manner such that due to the corresponding change in gas density produced within said storage tank, the gaseous working medium is selectively withdrawn from or added to the gaseous working medium flowing in the system.
A closed cycle type of thermodynamic system, having a controlled power output, comprising:
A closed cycle type of thermodynamic system, having a controlled power output, comprising:
A method of controlling the power output of a closed cycle type of thermodynamic system having gas at various temperatures throughout the closed system ranging between a relatively low temperature and a relatively high temperature, comprising the steps of:
Dependencies are inferred from the claim text.