Abstract: A diaphragm pump comprises a carrier part, a drive motor with a drive shaft, a pump head with a pump chamber delimited by a diaphragm, and an inlet port and outlet port. The pump head is connected to the drive shaft such that the direction of oscillation of the diaphragm is orthogonal with respect to the axis of rotation of the drive shaft. A drive transmission element is mounted on the pump head and is guided in a bearing disk mounted to be rotatable eccentrically, so as to be displaceable orthogonally with respect to the direction of oscillation of the diaphragm, such that the drive transmission element generates the oscillatory movement of the diaphragm in the pump chamber during the rotation of the pump head, and as a result of the rotation a pump medium line arranged therein is alternately connected to the inlet port and the outlet port.

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 power plant having a steam circuit which can be supplied, in the region of a heat recovery steam generator, with thermal energy for producing steam, the steam circuit has, in the region of the heat recovery steam generator, a high pressure part, a medium pressure part and a low pressure part. In addition, a heat reservoir which has a phase change material and which is not situated in the region of the heat recovery steam generator is included, wherein, in order to supply the heat reservoir with thermally processed water, a supply line which leads out from the high pressure part or the medium pressure part is included and a discharge line which leads into the medium pressure part, the low pressure part or a steam turbine is included for discharging thermally processed water from the heat reservoir.

Abstract: A method for operating a combined cycle power plant, wherein the combined cycle power plant has a gas turbine and a steam turbine and also a shutting-down device, and wherein, for shutting down the gas turbine and the steam turbine, the gas turbine and the steam turbine are operated within a time window that extends from the beginning of the shutting-down procedure at a first time to the falling of the steam temperature to a lower limit value at a second time by the shutting device in such a way that the gas turbine and the steam turbine are relieved substantially at the same time and the block power falls to zero, thermal energy that is stored in the combined cycle power plant preventing immediate falling of a steam temperature to operation below a minimum power output of the gas turbine within the time window.

Abstract: A method for operating a combined cycle power plant, wherein the combined cycle power plant has a gas turbine and a steam turbine and also a shutting-down device, and wherein, for shutting down the gas turbine and the steam turbine, the gas turbine and the steam turbine are operated within a time window that extends from the beginning of the shutting-down procedure at a first time to the falling of the steam temperature to a lower limit value at a second time by the shutting device in such a way that the gas turbine and the steam turbine are relieved substantially at the same time and the block power falls to zero, thermal energy that is stored in the combined cycle power plant preventing immediate falling of a steam temperature to operation below a minimum power output of the gas turbine within the time window.

Abstract: A power plant having a steam circuit which can be supplied, in the region of a heat recovery steam generator, with thermal energy for producing steam, the steam circuit has, in the region of the heat recovery steam generator, a high pressure part, a medium pressure part and a low pressure part. In addition, a heat reservoir which has a phase change material and which is not situated in the region of the heat recovery steam generator is included, wherein, in order to supply the heat reservoir with thermally processed water, a supply line which leads out from the high pressure part or the medium pressure part is included and a discharge line which leads into the medium pressure part, the low pressure part or a steam turbine is included for discharging thermally processed water from the heat reservoir.

Abstract: This invention provides an apparatus for electrically stimulating a cell and a method for using the same. In particular, the apparatus of the invention comprises an array of electrodes and a controller for actuating individual electrodes.

Abstract: A diaphragm pump comprises a carrier part (1), a drive motor (2) which is arranged thereon and which has a drive shaft (3) which rotates about a main axis of rotation (HR), a pump head (4, 4?) with a pump chamber (8, 8?) which is delimited by a diaphragm (7, 7?) driven in oscillation, and an inlet port (11) and outlet port (10), which are arranged on the carrier part (1) and which are each able to be alternately connected via a shuttle valve arrangement (12, 12?) to the pump chamber (8, 8?) in the sense of an intake stroke and exhaust stroke, wherein the pump head (4, 4?) is mounted rotatably in the carrier part (1) and is connected to the drive shaft (3) in an orientation such that the direction of oscillation (SR) of the diaphragm (7, 7?) is directed orthogonally with respect to the main axis of rotation (HR) of the drive shaft (3), there is provided for the diaphragm (7, 7?) a drive transmission element (13, 13?), which firstly is mounted on the pump head (4, 4?) so as to be displaceable in the directi

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: This invention provides an apparatus for electrically stimulating a cell and a method for using the same. In particular, the apparatus of the invention comprises an array of electrodes and a controller for actuating individual electrodes.

Abstract: This invention provides an apparatus for electrically stimulating a cell and a method for using the same. In particular, the apparatus of the invention comprises an array of electrodes and a controller for actuating individual electrodes.

Abstract: A power plant, particularly a coupled gas and steam power plant, including a plurality of first drainage lines that are fluidically connected on the upstream side to a water-steam circuit and are fluidically connected on the downstream side to an overpressure vessel, is provided. Additionally, at least one steam-conducting supply line, via which steam can be fed back to the water-steam circuit, is fluidically connected to the overpressure vessel. A method for operating such a power plant, wherein the at least one steam-conducting supply line can supply steam to the water-steam circuit in the region of a low-pressure stage, particularly in the region of the steam drum of the low-pressure stage is also provided.

Abstract: A method for operating a gas and steam turbine plant is provided. In the plant, the flue gas that escapes from a gas turbine is routed through a waste gas steam generator and where a flow medium that is used to drive a steam turbine is conducted in a flow medium circuit that includes several pressure stages. At least one of the pressure stages has an evaporator circuit with a steam collection drum that has a plurality of downpipes connected to the steam collection drum and a plurality of rising pipes downstream of the downpipes that are likewise connected to the steam collection drum and are heated by the flue gas in the waste heat steam generator. The height of the fluid column formed by the flow medium in the downpipes is monitored and a transient dry operation of the evaporator circuit can thus be detected and safeguarded against.

Abstract: The invention relates to an operating and display device (11) for a domestic appliance, comprising operating means for setting at least one parameter of an operating process of the domestic appliance, a light conductor part (24, 34) for conducting light, a plurality of function symbols (13, 14, 15), which each symbolize a respective selectable value of the parameter, and a lighting device (47) for backlighting the function symbols (13, 14, 15), by means of which lighting device the function symbol (13, 14, 15) associated with the presently selected value of the parameter can be optically distinguished from the other function symbols (13, 14, 15), wherein the operating means are designed as touch-sensitive operating means and have a touch-sensitive actuation surface (16), which is arranged such as to overlap with the function symbols (13, 14, 15) and thus the value of the parameter associated with one of the function symbols (13, 14, 15) can be selected by touching the actuation surface (16) in an overlap area

Abstract: A power plant, particularly a coupled gas and steam power plant, including a plurality of first drainage lines that are fluidically connected on the upstream side to a water-steam circuit and are fluidically connected on the downstream side to an overpressure vessel, is provided. Additionally, at least one steam-conducting supply line, via which steam can be fed back to the water-steam circuit, is fluidically connected to the overpressure vessel. A method for operating such a power plant, wherein the at least one steam-conducting supply line can supply steam to the water-steam circuit in the region of a low-pressure stage, particularly in the region of the steam drum of the low-pressure stage is also provided.

Abstract: This invention provides an apparatus for electrically stimulating a cell and a method for using the same. In particular, the apparatus of the invention comprises an array of electrodes and a controller for actuating individual electrodes.

Abstract: A method for operating a gas and steam turbine system, in which, in an associated waste-heat steam generator, the heat contained in the expanded working medium of an associated gas turbine is utilized for the generation of steam for an associated steam turbine with at least one low-pressure part and one high-pressure part, the low-pressure part being assigned in the waste-heat steam generator a low-pressure stage with a low-pressure drum, gases dissolved in the water or steam being degassed essentially of steam for the low-pressure part from the low-pressure drum, and, to regulate degassing, steam production in the low-pressure drum being varied in that heat is displaced inside the waste-heat steam generator, the heat in the waste-heat steam generator being displaced in that less heat is extracted from the working medium in a medium-pressure stage or high-pressure stage of the gas and steam turbine system.

Abstract: A method for operating a gas and steam turbine system having a gas turbine, a steam turbine and a waste heat steam generator is provided herein, wherein steam for the steam turbine can be generated in the exchange of heat with exhaust gas from the gas turbine. Absorption capacity of the steam turbine can be increased and pressure in the waste heat steam generator can be lowered to utilize storage reserves in the waste heat steam generator for increased generation of steam to assist the frequency in the power system starting from a steady-state operating mode. Thermal energy is fed to the waste heat steam generator wherein a power profile of the gas and steam turbine system is greater than or equal to a preceding power level of the steady-state operating mode to increase the absorption capacity of the steam turbine and reduce pressure in the waste heat steam generator.