Hochtemperatur-Energiespeicher - Drucklos
A method and a device for storing electrical energy by means of conversion into thermal energy and reconversion into electrical energy are described. In a pipe system as a vapor container, there is produced overheated vapor by use of electrically produced heat, said vapor transmits in turn the heat to the walls of the walls of the vapor container (1) under-utilization a thermodynamic effect, said walls transmitting the heat to the storage medium (2) by use of additionally arranged welded plates.
- 1-14. -14. (canceled)
- 15. A device for storing electrical energy by means of conversion into thermal energy, comprising:
a vapor container; a storage medium coupled to the vapor container; a water pipe adapted to guide water into the vapor container; an electrically driven plug-in heater arranged in the vapor container to electrically produce vapor from water guided into the vapor container; and a central pipe arranged in the vapor container, the central pipe surrounding the plug-in heater and comprising a vapor outlet at an upper end and an inlet at a lower end, wherein the vapor produced by the plug-in heater circulates within the central pipe to the vapor outlet and outside the central pipe back to the inlet, wherein a thermodynamic effect transmits heat to the storage medium.
- View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
- 31. A method for handling electrical energy, comprising:
producing vapor from water in a vapor container using an electrically driven plug-in heater; circulating the vapor out a vapor outlet and into a vapor inlet of a central pipe arranged in the vapor container and which surrounds the electrically driven plug-in heater; transmitting heat to a storage medium using a thermodynamic effect produced during the circulating step; and storing thermal energy with the storage medium from the heat transmitted in the transmitting step.
- View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
There is proposed:
An installation and a method for storing electrical energy in the form of heat in such a manner that in a pipe construction acting as a vapor container water is converted by means of electrically operated thermal elements into depressurized overheated vapor, which then, as a result of a thermodynamic effect, discharges thermal energy by distributing to the outer walls of the pipes of the vapor container to a storage medium in which the vapor container is embedded. The removal of the thermal energy from the vapor container is carried out by means of controlled input of water into the vapor container, wherein removal of overheated vapor is taken into account and, as a result of reduced pressure which is produced by means of an exhaust vapor condenser and the overheated vapor is guided through a heat exchanger combination. Water is then introduced into the heat exchanger in the second circuit and is then supplied as overheated vapor but at full pressure to a turbine with a generator in order to produce electrical energy.
The vapor container 1 (
There is located therebetween a pipe construction which is securely welded to the lower side of the upper portion 3 and to the upper side of the lower portion 5 comprising the central pipe 4 (
In the central pipe 4 there is arranged a plug-in heater 7 which rests loosely on the base of the lower portion 5. The upper portion of the plug-in heater 7 is guided as a pipe in a streamlined manner through the cover 9 (
The sealing is carried out by means of a stuffing box 34 (
Various thermal elements 14 are located in this plug-in heater 7 in a distributed manner (
These pipes 6 are further provided at the outer side with perpendicular splayed metal sheets 10 (
In order to achieve a better heat transfer in the storage medium 2 to the outer side (horizontally), it is proposed to install horizontally jet-like outwardly arranged round bars 32 (
This control fitting 20 (
For the mentioned water input there are provided in each of the eight satellite pipes 6 a respective water supply pipe 8 (
These pipes are connected to each other and are supplied by a pump 26 (
This pump 26 (
From the container 24, a pipeline having a pump 23 leads to the heat exchanger 28 and further to the dual-action heat exchanger 29. The pump 23 (
From the heat exchanger 29 a vapor line then leads to a turbine with a generator 27. The water supply of the heat exchangers 28 and 29 (
The container 24 receives an overflow in the form of a T so that there is no suction action.
The exhaust vapor condenser 21 has internally a cascade arrangement 18 to the uppermost terrace of which a water line 25 leads. A vacuum pump 22 (
The turbine 25 may also be provided with an exhaust vapor condenser 21 with a separate water flow and remote removal of the warm water.
The plug-in heater 7 is connected to the energy network via the line 19. Initially, only the lower portion of the plug-in heater 7 is heated. The base of the plug-in heater 7 which is located loosely on the base of the lower portion 5 evaporates water which remains at that location or which is introduced via the line 8. The vapor rises through the central pipe 4 and the satellite pipes 8 and urges the air via the exhaust vapor pipes 12, 19. The plug-in heater 7 is switched to full power. The thermodynamic heating of the vapor container begins. Vapor heated by the plug-in heater 7 is discharged, becomes overheated vapor, flows into the upper portion 3 and then into the eight satellite pipes 6 into the lower portion 5 in order to from there reach the central pipe 4 again in order to be reheated again by the plug-in heater 7.
As a result of redirection plates in the satellite pipes 6, the overheated vapor transmits its energy to the outer walls of the satellite pipes 6 then to the splayed metal plates 10 (
The temperature of the medium increases as a result of the thermal energy which is introduced. As the temperature increases, the mass of the vapor becomes smaller and consequently so does the energy transmission.
The energy transmission also terminates when the temperature of the overheated vapor exceeds the limit temperature of the thermal elements and they are switched off.
The following is carried out:
The water level regulation in the heat exchangers 28 and 29 is switched on (
The vacuum pump 22 (
The control unit 20 of the water pump 26 reports reduced pressure—the pump 26 begins to convey water from the container 21 into the circular pipeline 15 to the pipes 8 in the satellite pipes 6.
The pump 26 is subsequently controlled by the mechanical/electronic control unit 20 in terms of the quantity of water to be introduced in such a manner that in the vapor container 1 there is neither excess pressure nor reduced pressure. The water which is introduced evaporates and this vapor is overheated by the high temperature in the vapor container 1 and is then drawn in by the reduced pressure as far as the exhaust vapor condenser 21 (
As a result of the different occurrence of energy, during the discharge operation it is proposed to operate the turbine 27 at the same pressure but with a different quantity. The turbine 27 adapts to the quantity via its speed.
The braking frequency of the converter is controlled via the pressure of the overheated vapor.