A method for energy storage which integrates charging a liquid in an energy storage facility through consumption of a power from the grid with reduction pressure of natural gas through expander at the co-located city gate station and includes recovery of mechanical power of the natural gas expander and cold thermal energy of the expanded natural gas for an increase in production of liquid air per each kW of low-demand power consumed from the grid during off-peak hours.

A method for energy storage which integrates charging a liquid in an energy storage facility through consumption of a power from the grid with reduction pressure of natural gas through expander at the co-located city gate station and includes recovery of mechanical power of the natural gas expander and cold thermal energy of the expanded natural gas for an increase in production of liquid air per each kW of low-demand power consumed from the grid during off-peak hours.

A method and to an apparatus for providing additional control power of a power plant process. The power plant process includes a steam turbine connected into a water vapor circuit, having at least one high-pressure part and a medium-pressure and/or no-pressure part, which are connected to one another via a cold intermediate superheating line, a steam generator and a condenser. A steam reservoir is provided, which is formed as a Ruths reservoir and in which an encapsulated PCM reservoir is integrated. To charge the steam reservoir, hot steam is taken from the cold intermediate superheating line, between the high-pressure and the medium-pressure and/or low-pressure part of the steam turbine, and for charging, and thus for providing additional control power, steam is taken from the steam reservoir and fed back into the water vapor circuit between the steam generator and the condenser.

A method and to an apparatus for providing additional control power of a power plant process. The power plant process includes a steam turbine connected into a water vapor circuit, having at least one high-pressure part and a medium-pressure and/or no-pressure part, which are connected to one another via a cold intermediate superheating line, a steam generator and a condenser. A steam reservoir is provided, which is formed as a Ruths reservoir and in which an encapsulated PCM reservoir is integrated. To charge the steam reservoir, hot steam is taken from the cold intermediate superheating line, between the high-pressure and the medium-pressure and/or low-pressure part of the steam turbine, and for charging, and thus for providing additional control power, steam is taken from the steam reservoir and fed back into the water vapor circuit between the steam generator and the condenser.

An energy system having a) one or more catalyst sources which store a catalyst; b) one or more water sources which store water; c) one or more heat sources which store a heat storage medium; d) one or more reaction chambers into which the water, the catalyst, and the heat storage medium are introduced, which are configured for an exothermic reaction between the catalyst and the water to take place while in the presence of the heat storage medium, and in which steam is generated from the exothermic reaction; and f) one or more turbines downstream of the one or more reaction chambers which are adapted to be driven by the steam generated within the one or more reaction chambers.

An energy system having a) one or more catalyst sources which store a catalyst; b) one or more water sources which store water; c) one or more heat sources which store a heat storage medium; d) one or more reaction chambers into which the water, the catalyst, and the heat storage medium are introduced, which are configured for an exothermic reaction between the catalyst and the water to take place while in the presence of the heat storage medium, and in which steam is generated from the exothermic reaction; and f) one or more turbines downstream of the one or more reaction chambers which are adapted to be driven by the steam generated within the one or more reaction chambers.

The present disclosure relates to power plants. Various embodiments thereof may include a method for operating a gas-and-steam combined-cycle power plant. For example, some embodiments may include a method for operating a gas-and-steam combined-cycle power plant including: providing exhaust gas from a gas turbine to a steam generator; generating steam by means of the exhaust gas; driving a generator with the steam via a turbine installation to provide an electric current; removing the exhaust gas from the steam generator; and using at least a portion of heat contained in the exhaust gas downstream from the steam generator to affect an endothermic chemical reaction.

The present disclosure relates to combined gas and steam power plants. Various embodiments may include methods for operating such plants, such as: generating hot steam with an exhaust gas of a gas turbine; driving a generator with the steam; diverting at least a part of the generated steam and storing the diverted steam in a steam accumulator; then, discharging at least a part of the steam stored in the steam accumulator from the steam accumulator; heating the steam discharged from the steam accumulator with heat released during an exothermic chemical reaction; and feeding the heated steam to drive the turbine device.

The present disclosure relates to combined gas and steam power plants. Various embodiments may include methods for operating such plants, such as: generating hot steam with an exhaust gas of a gas turbine; driving a generator with the steam; diverting at least a part of the generated steam and storing the diverted steam in a steam accumulator; then, discharging at least a part of the steam stored in the steam accumulator from the steam accumulator; heating the steam discharged from the steam accumulator with heat released during an exothermic chemical reaction; and feeding the heated steam to drive the turbine device.

The present disclosure relates to thermochemical heat storage units. The teachings thereof may be embodied in systems and methods for operating, including charging and discharging, a thermochemical heat storage unit. For example, a method for operating a thermochemical heat storage unit may include: producing a first steam and feeding it to a heat exchanger; partially condensing the steam with release of its thermal energy, in the heat exchanger; subsequently pressurizing water condensed from the steam; feeding the pressurized water to the heat exchanger; evaporating the water into a second steam; and storing at least a portion of the second steam in a steam storage unit.