Abstract: A system for efficient conversion and provision of electrical energy, wherein supplied electrical current is converted into hydrogen in an electrolyzer and optionally temporarily stored in hydrogen storage. The hydrogen is converted into electrical current in a conversion stage in which offgas containing water in vapor form is emitted. The offgas is cooled using a heat pump to obtain condensate which is supplied to the electrolyzer as feed water. As a result, a supplied electrical current is decoupled from generated electrical current, wherein utilization of the process heat provided by the heat pump makes it possible to achieve high efficiency coupled with a low demand for fresh water for the electrolyzer.

Abstract: Various embodiments of the teachings herein include a device for controlling energy flows between participants in an energy network which are connected to one another via lines, the device comprising a processor configured to calculate the energy flows in advance for a period of time using an optimization process and to control the energy flows in the period of time on the basis of the result of the calculation. The processor is further configured to include losses that occur in the energy flows in the lines in the calculation using the optimization process.

Abstract: Various embodiments of the teachings herein include a control platform for controlling a heat network. A plurality of heat consumers and/or heat generators are coupled to the heat network for heat exchange. The control platform is programmed to: receive from each heat consumer information about a respective local feed temperature required as a minimum by the heat consumer within a time interval; and/or receive from each heat generator information about a respective local feed temperature that can be provided as a maximum by the heat generator within the time interval; and control the heat network depending on the received information relating to the local feed temperatures.

Abstract: Various examples include a device for increasing the heat yield of a heat source comprising: a heat sink; a heat pump with a condenser and an evaporator; and the heat source. The heat sink includes a heat sink feed and a heat sink return providing thermal coupling to the heat source with a heat exchanger. The heat source includes a heat source feed and a heat source return for thermal coupling to the heat sink with the heat exchanger. The condenser of the heat pump is thermally coupled to the heat sink feed to dissipate heat to the heat sink. The evaporator of the heat pump is thermally coupled to the heat source return downstream of the heat exchanger to absorb heat.

Abstract: Various embodiments of the teachings herein include a method for the compression of a gas comprising: introducing the gas into a compression chamber; pumping a liquid from an intermediate container into the compression chamber; and pumping at least part of the liquid from the compression chamber to a sprinkling system through a sprinkling circuit. The sprinkling system distributes the liquid within the compression chamber.

Abstract: Various embodiments include a method for determining a design of an energy system comprising: providing a plurality of values of a parameter of an optimization method using an extraction of the values according to a probability distribution of the parameter; specifying a respective single-target function of the energy system for each of the plurality of values; forming an overall target function using the single-target functions; and extremizing the overall target function using the optimization method.

Abstract: Various embodiments include a method for designing a multimodal energy system having a plurality of components comprising: providing a first plurality of parameters; stipulating a second plurality of secondary conditions; stipulating a target function; defining a critical operating state of the multimodal energy system; and extremalizing the target function on the basis of the first plurality of parameters, the second plurality of secondary conditions, and the critical operating state using an optimization method.

Abstract: 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.

Abstract: Various embodiments include a device for increasing the heat yield of a heat source comprising: a heat sink; a heat pump with a condenser and an evaporator; and the heat source. The heat sink includes a heat sink feed and a heat sink return providing thermal coupling to the heat source with a heat exchanger. The heat source includes a heat source feed and a heat source return for thermal coupling to the heat sink with the heat exchanger. The condenser of the heat pump is thermally coupled to the heat sink feed to dissipate heat to the heat sink. The evaporator of the heat pump is thermally coupled to the heat source return downstream of the heat exchanger to absorb heat.

Abstract: A method for drying drying-stock includes separating solvent-containing drying stock within a drying unit into a base material and a solvent with the aid of a first heat transfer medium that flows through a first circuit, where after the solvent has been taken up by the first heat transfer medium, the solvent is extracted from the heat transfer medium via heat energy (condensation), where the heat energy is transferred by a heat exchanger with the aid of an evaporation unit to a second circuit and made available to a second heat transfer medium, and where the heat energy is fed in a condensation unit of the heat pump back to the first circuit with the aid of a heat pump.

Abstract: Various embodiments include a device for increasing the heat yield of a heat source comprising: a heat sink; a heat pump with a condenser and an evaporator; and a heat sink feed and a heat sink return providing a thermal coupling to the heat source with a heat exchanger. The condenser is thermally coupled to the heat sink feed for emitting heat to the heat sink. The evaporator is thermally coupled to the heat sink return for absorbing heat.

Abstract: The present disclosure relates to combined heat and power plants. The teachings thereof may be embodied in methods for operating such a plant to provide electrical and thermal energy to a consumer unit, comprising: simultaneously generating electrical energy and heat in a process flow based on a demand for electricity; storing heat generated in excess of a demand for heat; and increasing a heat output when a difference between an actual provided heat output and the demand for heat is exceeded.

Abstract: A device controls a load flow in an alternating-voltage network. The device is distinguished by a module series circuit of two-pole switching modules that can be inserted in series into a phase line of the alternating-voltage network. Each switching module has an energy store and controllable power semiconductors that can be switched on an off and each switching module can be controlled in such a way that a switching-module voltage can be produced at the poles thereof, which switching-module voltage corresponds to a positive or negative energy-store voltage or a voltage having the value of zero. A control apparatus for controlling the switching modules is provided, which control apparatus is configured to control the switching modules in such a way that a periodic longitudinal voltage can be produced at the module series circuit. A method for controlling a load flow in an alternating-voltage network is performed by the device.

Abstract: A combined heat and power plant for the decentralized supply of power and of heat may include at least one prime mover for providing electrical energy while providing waste gas, at least one thermal store for storing thermal energy provided by the waste gas, and at least one high-temperature battery in which the electrical energy provided by the prime mover can be stored. The high-temperature battery can be supplied by the waste gas provided by the prime mover to keep the high-temperature battery warm.

Abstract: A field control device for a high-voltage system includes a shielding element for field control, which can be connected to an electrical conductor of the high-voltage system in an electrically conductive manner and, when connected to the conductor, at least partly delimits a weak-electric-field spatial region. A cooling body, which can be connected to the electrical conductor in a thermally conductive manner and which is disposed within the weak-field spatial region, has an outer surface area which is greater than an outer surface area of the shielding element. A high-voltage system having the field control device is also provided.

Abstract: A device controls a load flow in an alternating-voltage network. The device is distinguished by a module series circuit of two-pole switching modules that can be inserted in series into a phase line of the alternating-voltage network. Each switching module has an energy store and controllable power semiconductors that can be switched on an off and each switching module can be controlled in such a way that a switching-module voltage can be produced at the poles thereof, which switching-module voltage corresponds to a positive or negative energy-store voltage or a voltage having the value of zero. A control apparatus for controlling the switching modules is provided, which control apparatus is configured to control the switching modules in such a way that a periodic longitudinal voltage can be produced at the module series circuit. A method for controlling a load flow in an alternating-voltage network is performed by the device.

Abstract: 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.

Abstract: The present disclosure relates to power plants. Teachings thereof may be embodied in methods for operating a combined gas-and-steam power plant and/or combined gas-and-steam power plants. For example, some embodiments may include a method for operating a combined gas-and-steam power plant comprising: generating steam with waste gas from a gas turbine; driving a generator for providing electrical current via a turbine device; and using at least part of the heat in the steam to affect an endothermic chemical reaction.

Abstract: 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.

Abstract: A field control device for a high-voltage system includes a shielding element for field control, which can be connected to an electrical conductor of the high-voltage system in an electrically conductive manner and, when connected to the conductor, at least partly delimits a weak-electric-field spatial region. A cooling body, which can be connected to the electrical conductor in a thermally conductive manner and which is disposed within the weak-field spatial region, has an outer surface area which is greater than an outer surface area of the shielding element. A high-voltage system having the field control device is also provided.