EP3374603A1 - Dispositif d'accumulation courant-chaleur-courant et procédé de régulation de charge de ce dernier - Google Patents

Dispositif d'accumulation courant-chaleur-courant et procédé de régulation de charge de ce dernier

Info

Publication number
EP3374603A1
EP3374603A1 EP16805013.6A EP16805013A EP3374603A1 EP 3374603 A1 EP3374603 A1 EP 3374603A1 EP 16805013 A EP16805013 A EP 16805013A EP 3374603 A1 EP3374603 A1 EP 3374603A1
Authority
EP
European Patent Office
Prior art keywords
working gas
charging circuit
circuit
pressure
turboexpander
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16805013.6A
Other languages
German (de)
English (en)
Other versions
EP3374603B1 (fr
Inventor
Peter Ortmann
Werner Graf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3374603A1 publication Critical patent/EP3374603A1/fr
Application granted granted Critical
Publication of EP3374603B1 publication Critical patent/EP3374603B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/006—Accumulators and steam compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/06—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein the engine being of extraction or non-condensing type

Definitions

  • the invention relates to a current-heat storage device for storing and recovering electrical energy.
  • the invention further relates to a method for
  • SWS storage device It is known to store electrical energy in so-called current-heat-current storage devices, also referred to as SWS storage device. Such devices are also referred to in English as “Pumped Heat Electricity Storage Systems” or abbreviated to “PHES Systems”.
  • PHES Systems Current-heat-current storage devices
  • the electric power is converted into heat using a working gas and heat pump, and the heat is stored in a storage tank.
  • Such storage tanks are also referred to as thermal potential storage or, in English, "pumped thermal electricity storage.” When needed, heat is taken from the storage tank and converted back into electricity by a heat engine, allowing the SWS storage device to store and retard electric power
  • the document WO2013 / 164562 discloses a SWS memory device, this SWS memory device having a limited control capability.
  • the document EP2147193B1 also discloses an apparatus and a method for storing and recovering electrical energy.
  • a disadvantage of this device or this method is the fact that the recorded and delivered electrical power is difficult to control.
  • the document EP2574739A1 also discloses an apparatus and a method for storing and recovering electrical energy. This device or method has the disadvantage that three memories are required
  • Heat storage a cold storage and a low-temperature heat storage, which is very expensive.
  • the recorded and delivered electrical power can not be controlled, in particular, no partial load operation is possible.
  • the object of the invention is to form a current heat storage device for storing and recovering electrical energy, which allows a more advantageous absorption and release of electrical energy, and which in particular a beneficial
  • the object is further achieved by a method comprising the features of claim 10.
  • the dependent claims 11 to 20 relate to further advantageous method steps.
  • the object is in particular achieved with a power-heat-current storage device comprising a charging circuit and a discharge circuit for conveying a working gas, wherein the charging circuit and the discharge circuit comprise a common regenerator, which is switchable with either the charging circuit or the discharge circuit fluid conductively connected, to form a closed circuit and to supply the working gas to the regenerator, wherein the charging circuit, a first turbocompressor and a The first turbo-compressor is driven by the first turboexpander and an electric motor, wherein the Entladeniklauf a second
  • Turbo expander and a second turbocompressor wherein the second turboexpander drives the second turbocompressor and a generator, and comprising a
  • Control device and a density change device which allow the pressure of the working gas in the charging circuit and / or in the discharge circuit controlled to change to regulate the recordable from the first turbocompressor power or the deliverable from the second turboexpander power.
  • the object is further achieved in particular with a method for load regulation of a power-heat-current storage device comprising a charging circuit with a first
  • Turbo compressor wherein the first turbocompressor for heating a working gas mechanical power is supplied, comprising a discharge circuit Ent with a second turboexpander, wherein the second turboexpander for cooling the working gas
  • Entladenikank includes a common regenerator, which optionally with the
  • Charging circuit or the discharge circuit is connected to a closed circuit, so either the working gas heated in the charging circuit is supplied to the regenerator or the regenerator hot working gas removed and supplied to the discharge circuit, wherein the recorded from the first turbocompressor mechanical power and / or emitted by the second turboexpander mechanical performance is regulated by changing the pressure of the working gas.
  • the inventive stream of heat and power storage device comprises two cycles, a charging circuit and a discharge circuit, and includes a common regenerator, wherein the regenerator is reversibly connected to either the charging circuit or the discharge circuit, forming a closed circuit.
  • a single, common regenerator is preferably arranged, that is to say the charging circuit or the discharge circuit has no series-connected regenerators.
  • the single, common regenerator is preferably designed as a porous solid regenerator.
  • the single, common regenerator can advantageously also be formed from a plurality of parallel-connected partial regenerators.
  • the common regenerator comprises a plurality of regenerators connected in series, so that the regenerators are arranged along the charging circuit or the discharge circuit.
  • the device according to the invention also comprises Turbo compressor and turboexpander, that is rotating machines, for compressing and relaxing a working gas in the charging circuit or in the discharge circuit.
  • a turbocompressor of the charging circuit is preferably driven by an electric motor.
  • a turboexpander of the discharge circuit drives an electric generator.
  • electrical power absorbed or emitted according to the invention is regulated by the fact that the density or the total mass of the charge in the charging circuit or in the charging circuit
  • Density control can also be operated with partial load.
  • Embodiment at least one turbo compressor or a turboexpander of the charging circuit and / or the Endladeniklaufs adjustable Vorleitize to by a
  • Position change of the Vorleitrate have an additional control option to regulate the recorded or delivered power of the cycle.
  • the density control comprises a density changing device which controls the pressure of the
  • Working gas in the charging circuit and / or in the discharge circuit can be controlled both raise and lower to change the density of the working gas in the charging circuit and / or in the discharge circuit via the pressure change of the working gas, and thereby absorbed by the device according to the invention or delivered power regulate.
  • the device according to the invention or the method according to the invention have the advantages that a simple, reliable and cost-effective partial load operation is possible, both with regard to recording and output of electrical power, and that the partial load operation has a high efficiency. Another advantage is the fact that a rapid adaptation or modification of the recorded or delivered electrical power is possible. Another advantage is the fact that a rapid change from energy delivery to energy intake and vice versa is possible.
  • the Device according to the invention is therefore particularly well suited for operation in combination with renewable energy sources.
  • the inventive device or the inventive method is also particularly advantageous for stabilizing an electricity grid suitable.
  • Electricity networks with a high proportion of wind and solar energy have a high
  • Residual load that is, a load or power that is applied by quickly controllable power plants. It is known to use pumped storage power plants for a highly fluctuating feed of wind turbines and solar plants because they can store and release energy surpluses. However, pumped storage power plants are usually designed as speed-rigid systems and also have a significantly reduced efficiency in part-load operation. Such pumped storage power plants are therefore poorly suited for operation with variable electrical power.
  • the device according to the invention or the method according to the invention uses turbo-compressors or turboexpanders, that is to say rotating machines, for compressing and relaxing the working gas, and in combination with an electricity network has the advantages that a rapid change of the residual load can be easily followed by a partial load operation high efficiency is possible that in a possible embodiment, a variable speed operation is possible, and that the inventive device is therefore excellent for stabilizing the electricity grid is suitable.
  • the device according to the invention or the method according to the invention is therefore able to provide the two system services required for stable operation of an electricity network, provision of control power and use of control energy, and is superior to conventional pumped storage power plants with regard to these system services.
  • the device according to the invention is capable of constantly balancing the difference between generated and consumed electrical power in an electricity grid, and thus can ensure the stability of an electricity grid.
  • the inventive device is on the one hand in combination with particular renewable energy operable to electrical
  • the device according to the invention is also suitable for network stabilization, in combination with renewable energies or in conventional electricity networks.
  • a particular advantage of the inventive device is the fact that the provision of control power in the
  • Grid stabilization causes the greatest cost, and that the inventive device can generate such a control power.
  • the device according to the invention has the advantages that it is less expensive to build, that it can be built in the lowlands, that less space is required, and that they cause a much lower impairment in terms of landscape image and therefore encounter less resistance in the population ,
  • the device according to the invention has an instantaneous reserve due to the rotating flywheel masses of the engine, generator and turbomachinery and is therefore able to stabilize the frequency of an electricity network at extremely short notice.
  • the erfmdungsgemässe device is also capable of a change in density of the working gas and / or a
  • the current-heat-power storage device according to the invention which could also be referred to as a thermal battery, can be charged and discharged similarly to an electric battery, in addition to a full charge at any time a partial load or a partial discharge is possible.
  • the memory concept underlying the current-heat-power storage device according to the invention makes it possible to store electrical powers in the range from 1 to 50 MW and preferably electrical energy quantities in the range from 1 to 250 MWh and release them again with a delay by appropriate design of the subcomponents. Due to the relatively large storable electrical energy or amount of energy, the storage device according to the invention is particularly well suited for network stabilization of a power supply comprising renewable energy sources.
  • the storage device comprises a regenerator.
  • a regenerator is a heat exchanger in which the heat is temporarily stored in a storage material during the replacement process.
  • the regenerator When the regenerator is charged, the heat energy supplied by the hot working gas is released to the storage material and stored in the storage material.
  • the storage material becomes cool working gas supplied, wherein the cool working gas extracts heat energy from the storage material, so that the storage material is cooled and the working gas is heated, wherein the heat energy extracted from the working gas is supplied to a subsequent process.
  • the regenerator has tubes, through which the working fluid flows, wherein the tubes are thermally coupled to the storage material, so that a heat exchange occurs.
  • Fig. 2 shows a charging circuit in detail
  • Fig. 3 shows a discharge circuit in detail
  • FIG. 4 shows a further embodiment of a power-heat-current storage device
  • Fig. 8 is a T, s diagram showing the influence of the density change
  • Fig. 10 - 12 each have a diagram relating to recording and delivery of electrical power in
  • Fig. 13 shows a detail of the control method when changing the output power.
  • the performance of a turbomachine depends on the thermodynamic state of the engine, characterized by the enthalpy difference ⁇ ( ⁇ , ⁇ ) and the mass flow rate m of the engine.
  • ⁇ ⁇ , ⁇
  • m mass flow rate
  • the mass flow can be calculated
  • V volumetric flow [m 3 / s]
  • the power P of the turboexpander is proportional to the density of the delivered working gas. According to equation (4b), the power P of the turboexpander
  • Turboexpanders is proportional to the pressure p of the delivered working gas. Will the density of the For example, if the working gas or the pressure p of the working gas doubles, the resulting power P is doubled. If the density of the working gas or the pressure p of the working gas is halved, for example, the resulting power P is halved.
  • the power consumption of a turbocompressor or the power output of a turboexpander can thus be regulated by a change in the density or the pressure of the working gas.
  • the prerequisite is that when the density or pressure changes, both the inlet pressure and the outlet pressure of the turbomachine are raised
  • the inventive current heat and power storage device has two closed
  • Circuits on the charging circuit and the discharge circuit uses the density change or the pressure change of the working gas to control the recorded or the output power.
  • Turbo compressor or the power output of the turboexpander can also be achieved by a volume flow change.
  • a control based on a change in the volume flow has the disadvantage that the efficiency of the power-heat storage device drops sharply in the partial load or in partial load operation, so that a control of the density of the working gas is much more advantageous.
  • FIG. 8 shows the T, s diagram of the closed discharge circuit 200 shown in FIG.
  • FIG. 3 shows the closed discharge circuit 200 shown in FIG. 1, which is configured as a gas turbine process, in detail.
  • the closed unloading circuit 200 for the working gas A comprises a second turbocompressor 210, a second turboexpander 250, a second recuperator 230 having a first and a second heat exchange channel 230a, 230b, a high temperature regenerator 120 and a first cooler 270, the second turbocompressor 210 via the Wave 214 is coupled to the second turboexpander 250 and a generator 290.
  • a density-changing device 300 is arranged, which allows the density or the system pressure of the working gas A or to change the upper and lower pressure levels of the working gas A.
  • the discharge circuit 200 has a single regenerator, the Hochtemperaturregenerator 120.
  • Figure 8 shows Yi the cycle or the T, s diagram, or
  • Temperature entropy diagram of the closed discharge circuit 200 for a working gas A with a first density, a low density or a low pressure Starting from the operating point YIA, having the lower pressure level, the working gas A is compressed by the second turbo compressor 210 to the operating point Y ] B , having the upper pressure level, in the present example from 2 bar to 8 bar.
  • a pressure equalization takes place between the lower pressure level and the upper pressure level, so that a standstill pressure, also referred to as "settie out pressure", is established, which lies between the lower and the upper pressure level
  • the working gas A is heated to the operating point Yic after the operating point YJB, in particular by the high-temperature regenerator 120, then expanded in the second turboexpander 250 to the operating point YID, and then to the operating point YIA
  • the density or the system pressure of the working gas A is now raised to a second density, a higher density, or a second system pressure, with the result that the cyclic process is shifted to the left
  • Figure 8 shows Y2 displaced to the left Circular process, or the T, s diagram of the closed
  • Working point Y2A the working gas A from the second turbocompressor 210 is compressed to the operating point Y2B, in the present example from 5 bar to 20 bar.
  • the working gas A is then heated to the operating point Y 2 c, then relaxed in the second turboexpander 250 to the operating point Y2D, and then cooled to the operating point Y 2A .
  • the solid lines in FIG. 8 represent isobars. The cooling process of the working gas A thus takes place in both circular processes Yi, Y 2 almost along one isobar.
  • Entladenikanksburg 200 output power, or in an analogous manner from the
  • Charging circuit 100 recorded power can be controlled by a density control, and that the efficiency of the discharge circuit or the charging circuit at full load operation as well as during partial load operation remains constant or nearly constant.
  • the influence of the Reynolds number has a limited effect on the efficiency of turbomachinery.
  • the Reynolds number has an influence on the heat transfer of the caloric apparatus in the cycle.
  • Fig. 1 shows a current-heat-electricity storage device 1 for storage
  • the energy storage device 1 comprises a charging circuit 100 with lines 101, a discharge circuit 200 with lines 201, a Hochtemperaturregenerator 120, hereinafter also referred to as a regenerator, two density change devices 300 and switching means 400, 401, wherein the switching means 400, 401 in such a way with the lines 101, 201 connected to the high-temperature regenerator 120 fluid conductively and switchable either with the charging circuit 100 or with the discharge circuit 200 can be connected to a closed circuit, so that the charging circuit 100 and the discharge circuit 200, the high-temperature regenerator 120 successively flow in countercurrent.
  • Control device 500 is signal-conducting connected to the switching means 400, 401 and other sensors and actuators, not shown in detail, to the energy storage device 1 to control and measure variables such as pressure, speed, temperature, power consumed, output power, etc. to measure.
  • Figures 2 and 3 show the charging circuit 100 and discharge circuit 200 shown in Figure 1 comprising the density-changing device 300 in detail.
  • the high-temperature regenerator is flowed through by a circulating in a closed circuit working gas, the charging circuit to the high-temperature regenerator supplies heat, and wherein the Entladeniklauf the high-temperature regenerator withdraws heat.
  • the temperature of the working gas flowing into the high-temperature regenerator is preferably in the range between 600 to 1000 ° C., and the temperature of the working gas flowing out of the high-temperature regenerator is generally lower, and preferably in the range between 400 ° C. and 700 ° C.
  • the working gas should preferably flow through the high-temperature regenerator as unhindered as possible, thereby releasing or absorbing the heat.
  • the high temperature regenerator should preferably meet the following, sometimes contradictory requirements:
  • the heat capacity should be as large as possible, ie a regenerator made of a densely packed material with high heat capacity.
  • the Hochtemperaturregenerator 120 includes a solid storage material and a working gas A as a heat transfer medium to exchange heat between the storage material and the working gas A flowing through.
  • a solid storage material for the Hochtemperaturregenerator 120 for example, porous refractory materials, sand, gravel, rock, concrete, graphite or a ceramic such as silicon carbide are suitable.
  • the high-temperature regenerator 120 comprises an outer shell 120a and an inner space, wherein the solid storage material is arranged and / or configured in the interior such that the storage material for heat exchange can be flowed through or flowed around by the working gas A.
  • the storage material is preferably flowed around both directly in the charging circuit and in the discharge circuit from the working gas and thus comes into direct contact with the working gas.
  • about 40% to 70% of the interior is filled with storage material, or 30% to 60% of the
  • the high-temperature regenerator 120 additionally comprises at least one inlet opening 120b and at least one Outlet opening 120c to the working in the lines 101 and 201 flowing working gas A to the interior of the Hochtemperaturregenerators or dissipate, so that in the charging circuit 100 or in the discharge circuit 200 circulating working gas A comes into contact, preferably in direct contact with the solid storage material.
  • FIGS. 1 to 3 show a high-temperature regenerator 120 running in the vertical direction, wherein the working gas A flows from top to bottom during charging and flows from below upwards during unloading.
  • FIG. 2 shows the closed charging circuit 100 shown in FIG. 1 in detail.
  • the closed charging circuit 100 for the working gas A comprises a first turbo compressor 10, a first turboexpander 140, a first recuperator 130 with a first and a second heat exchange channel 130a, 130b, the high temperature regenerator 120 and a preheater 151, wherein the first turbocompressor 110 via a common Wave 114 is coupled to the first turboexpander 140 and an electric motor 170.
  • the first turbocompressor 110 and the first turboexpander 140 form the basic elements of a heat pump 2.
  • the switching means 400 designed as valves are switched to flow and the switching means 401 (not shown in FIG. 2) are blocked so that a closed charging circuit 100 is formed, in which the working gas A in the flow direction AI or in
  • Charge flow direction AI flows.
  • the working gas A argon or nitrogen is preferably used. Starting from the Hochtemperaturregenerator 120, the working gas A
  • the charging circuit 100 comprises a high pressure section 100a and a low pressure section 100b, wherein the high pressure section 100a runs in the flow direction AI between the first turbocompressor 110 and the first turboexpander 140, and wherein the low pressure section 100b in the flow direction AI between the first
  • Density changing device 300 includes a pressure vessel 301 connected to low pressure section 100b via line 305 and valve 302 and connected to high pressure section 100a via line 306, compressor 304, and valve 303.
  • working gas A can be removed controllably from the charging circuit 100 or working gas A can be supplied, so that the density of the working gas A and thus the power consumption of the first turbocompressor 110 can be influenced, so that the charging circuit 100 can be operated by a density change controllable with full load or an adjustable part load.
  • the working gas A is advantageously kept under elevated pressure in order to increase the power density of the compressor 110 and the turbine 140 and to improve the heat transfer in the caloric apparatus such as the recuperator 130 or the preheater 151.
  • the pressure of the working gas A is preferably maintained or regulated in a range of 1 to 20 bar.
  • the density changing device 300 could also be configured such that the working gas A of the charge cycle 100 is released to the environment for density reduction, and the working gas A is reintroduced into the charge cycle 100 to increase the density, for example, from a pressurized reservoir , Such an approach would be possible, for example, with a non-critical working gas A such as nitrogen.
  • a non-critical working gas A such as nitrogen.
  • the current heat-power storage device according to the invention is preferably operated for several thousand hours per year, it is more advantageous if the working gas A is temporarily stored in a storage tank 301, especially if as working gas A a relatively expensive gas such as Argon is used.
  • the storage tank 301 In order not to let the storage tank 301 become disproportionately large, it is advantageous to pump the working gas A by means of a compressor 304 into the storage tank 301.
  • the compressor 304 is advantageously connected to the high pressure section 100a.
  • the working gas A is advantageously fed back to the charging circuit 100 via the low pressure section 11 Ob.
  • the first turbocompressor 110, the first turboexpander 140, the first recuperator 130 and the preheater 151 form a heat pump 2.
  • the working gas A preheated by the preheater 151 and the recuperator 130 is supplied as input gas to the first turbocompressor 110, compressed therein, and thereby experiences a Temperature and pressure increase.
  • the compressed working gas A is fed to the high-temperature regenerator 120, cooled therein, subsequently cooled further in the recuperator 130, and subsequently expanded in the first turbo-expander 140, in order subsequently to be preheated in the preheater 11 and in the recuperator 130.
  • the first turbo-expander 140 and the turbocompressor 110 are disposed on the same shaft 114 so that the first turbo-expander 140 assists in driving the first turbocompressor 110.
  • the shaft 114 is driven by the electric motor 170, wherein instead of the electric motor 170 also another drive device is suitable, for example a turbine, or in general an engine.
  • a discharge circuit 200 is required.
  • FIG. 3 shows the closed discharge circuit 200 shown in FIG. 1, which is configured as a gas turbine process, in detail.
  • the working gas A the same gas as in the charging circuit 100 is used, preferably argon or nitrogen.
  • the closed discharge circuit 200 for the working gas A comprises a second
  • Turbo compressor 210 a second turboexpander 250, a second recuperator 230 with a first and a second heat exchange channel 230a, 230b, the Hochtemperaturregenerator 120 and a first radiator 270, wherein the second turbocompressor 210 via the shaft 214 with the second turboexpander 250 and a generator 290th is coupled.
  • the switching means 401 designed as valves are switched to flow and the switching means 400 (not illustrated in FIG. 3) are blocked so that a closed discharge circuit 200 is formed, in which the working gas A flows in the flow direction A2 or in FIG.
  • Discharge flow direction A2 flows.
  • the discharge circuit 200 is configured in such a way that, starting from the high-temperature regenerator 120, at least the second turboexpander 250, the first heat exchange channel 230a of the second recuperator 230, the first cooler 270, the second turbocompressor 210, the second heat exchange channel 230b of the
  • the discharge circuit 200 includes a high pressure section 200a and a
  • Low-pressure section 200b wherein the high-pressure section 200a in the flow direction A2 between the second turbo-compression 210 and the second turboexpander 250 runs, and wherein the low-pressure section 200b in the flow direction A2 between the second
  • Turboexpander 250 and the second turbocompressor 210 runs.
  • Density changing device 300 includes a pressure vessel 301 connected to low pressure section 200b via line 305 and valve 302, and connected to high pressure section 200a via line 306, compressor 304, and valve 303. With the aid of the density-changing device 300, working gas A can be taken from the discharge circuit 200 or working gas A can be supplied, so that the density of the working gas A and thus the power output of the second turboexpander 250 can be influenced so that the unloading circuit 200 can be controllably operated at full load or at partial load.
  • the first cooler 270 is preferably cooled to ambient temperature U. As can be seen in FIGS. 2 and 3, in the high-temperature regenerator 120, flows
  • Discharge flow direction A2 in the opposite direction to the charging flow direction AI.
  • the effluent from the Hochtemperaturregenerator 120 working gas A is expanded via the second turboexpander 250 and thereby cooled, and is then further cooled in the second recuperator 230 and in the first cooler 270, before the working gas A in the second
  • Turbo compressor 210 is compressed and then preheated in the second recuperator 230 to then flow back into the Hochtemperaturregenerator 120.
  • the second turbocompressor 210 and the second turboexpander 250 are disposed on the same shaft 214 so that the second turboexpander 250 drives the second turbocompressor 210.
  • the shaft 214 is taken by the generator 290 energy.
  • a work machine could also be connected to the shaft 214.
  • first turbocompressor 110 and the second turbocompressor 210 and preferably also the first turboexpander 140 and the second turboexpander 250 may each comprise an adjustable leading wheel 110a, 210a, 140a, 250a. An adjustment of these Vorleitizer allows the power consumption or the
  • FIG. 4 shows a particularly advantageous embodiment of an energy storage device 1.
  • the energy storage device 1 shown in FIG. 4 has a single, common recuperator 130.
  • the working gas A is so switchably routed by means of switching means 400, 401 as valves, that a charging circuit 100 and a discharge circuit 200 is formed, similar to the charging circuit 100 and discharge circuit 200 shown in Figure 2 or 3, with the exception that only a single , common recuperator 130 is present.
  • the energy storage device 1 in addition to the charging circuit 100 and the discharge circuit 200 also includes a preheating system 1 0 for a circulating preheating fluid V.
  • the preheating system 1 0 includes in particular a first fluid reservoir 152, in which a heated preheating fluid VI is stored , a second fluid reservoir 222, in which a cooled preheating fluid V2 is stored, as well as fluid lines 155, 224 and optionally conveying means 153, 223 around the
  • Vor ⁇ rmfluid V in the preheating system 150 to circulate and in particular the preheater 151st and the radiator 221 supply.
  • the heated Voricarmfluid V starting from the first fluid reservoir 152 is supplied to the preheater 151, and the then cooled Vor Reginarmfluid V supplied to the second fluid reservoir 222.
  • the cooled preheating fluid V of the second fluid reservoir 222 is supplied to a radiator 221, and the preheating fluid V heated thereafter is supplied to the first fluid reservoir 152.
  • Preheating V preferably water is used.
  • the second fluid reservoir 222 could be configured as a container such that the preheating system 150 forms a closed circuit.
  • the second fluid reservoir 222 could also be designed to be open, wherein, instead of a container, a body of water, for example a lake, would be suitable for receiving the cooled preheating fluid V or for providing cooling fluid V.
  • the energy storage device 1 is used for the storage of electrical energy and for the staggered delivery of electrical energy.
  • 4 shows such a storage device for electrical energy comprising the energy storage device 1 and comprising an electric motor 170 and a generator 290.
  • the electric motor 170 and the generator 290 are combined to form a single machine to form a
  • the energy storage device 1 shown in Figure 4 is therefore particularly low to produce, because only a single motor generator 170/290, a single Hochtemperaturregenerator 120 and a single recuperator 130 are required.
  • the first turbocompressor 110, the first turboexpander 140, the first recuperator 130 and the preheater 1 1 form a heat pump in the charging circuit 100.
  • the preheated working gas A is supplied to the first turbocompressor 110, compressed therein and heated, and flows through as a working gas A the charging circuit 100.
  • the working gas A is then through the
  • High temperature regenerator 120 passed, thereby cooled and then cooled again in the recuperator 130.
  • the working gas A is then expanded in the first turboexpander 140 to the lowest pressure in the charging circuit 100, for example to a pressure of about 1 to 5 bar, wherein the energy released thereby in the first turboexpander 140 is used to partially drive the first turbocompressor 110.
  • the working gas A then flows through the preheater 151 and is preheated.
  • the preheater 151 is connected to the preheating system 150 and draws the heat energy from the first fluid storage 152 for the warm preheating fluid, in the illustrated embodiment as warm water.
  • the discharge cycle 200 includes a second turbocompressor 210 configured as an intercooled gas turbine compressor with a radiator 221, and includes the recuperator 130, the high temperature regenerator 120, the second turboexpander 250, and the first radiator 270, which cools to the environment U.
  • the radiator 221 is connected via lines 224 with the
  • Preheating system 150 connected, wherein cool fluid is removed from the memory 222, is supplied via the conveyor 223 to the radiator 221, and wherein the heated fluid is supplied to the memory 1 2.
  • Figure 5 shows another embodiment of a charging circuit 100 with a
  • Density changing device 300 In contrast to the charging circuit 100 shown in Figure 2, the charging circuit 100 shown in Figure 5 comprises a single
  • Hochtemperaturregenerator 120 consisting of four parallel Operageneratoren 120a, 120b, 120c, 120d.
  • the single regenerator 120 may be designed as a single container or, as shown in the exemplary embodiments according to FIGS. 5 and 6, may comprise a plurality of partial regenerators connected in parallel.
  • the charging circuit 100 comprises a high-pressure section 100a and a low-pressure section 110b, wherein the partial regenerators 120a, 120b, 120c, 120d are arranged in the high-pressure section 100a, and wherein valves 307 to 310 and 321 to 324 are arranged to supply the partial regenerators 120a, 120b, 120c, 120d individually or more in parallel fluid conductively connected to the high-pressure section 100a.
  • the valves 307 to 310 and 321 to 324 preferably only have to be switched on and off and are designed, for example, as flap valves.
  • Partial regenerators 120a, 120b, 120c, 120d can be of any size, with a number between 2 and 10 proving to be particularly advantageous. Usually only one of the partial regenerators 120a, 120b, 120c, 120d, in FIG. 5, for example, the partial regenerator 120a, is actively integrated in the high-pressure section 120a and flows through the circulating working gas A, while the other, temporarily inactive partial regenerators 120b, 120c, 120d due to the closed valves have no fluid-conducting connection to the high-pressure section 120a and are thus decoupled from the loading and unloading process.
  • the individual partial regenerators 120b, 120c, 120d are either heated or fully charged and ready for emptying or for the discharge process, or they are cold and are ready for heating or charging with the upper end is generally hot and the lower end generally a lower temperature having.
  • the individual partial heat storages 120a, 120b, 120c, 120d can also be partially charged
  • the internal volume of a partial regenerator is filled with a heat-storing material and a gas volume, wherein the gas volume or the porosity of the storage material is preferably between 30-60% of the internal volume of the partial regenerator.
  • the charging circuit 100 comprises a density-changing device 300 for power control.
  • the high temperature regenerator 120 comprising a plurality of parallel connected
  • Partial regenerators 120a, 120b, 120c, 120d can be fluidly connected to the charging circuit 100 or the discharge circuit 200 by a corresponding switching of the valves 400, 401 to form a closed circuit.
  • At least one, and preferably more, of the inactive partial regenerators 120b, 120c, 120d or their gas volume is used for intermediate storage of working gas A, thereby increasing the density or the pressure in the charging circuit 100
  • FIG. 6 shows such an exemplary embodiment with reference to an arrangement of the high-temperature regenerator 120 in the charging circuit 100, wherein the
  • High-temperature regenerator 120 in comparison to the embodiment shown in Figure 5, only two parallel partial regenerators 120a, 120b includes, the arrangement includes in addition to the already disclosed in Figure 5 switching valves 307, 308, 309, 310 additional components, namely valves 312, 313rd , 314 and lines 317, 318 and 319. These additional components, in combination with the partial regenerators 120a, 120b, allow one
  • Density change device 300 form, and therefore replace the density change device 300 shown in Figure 5.
  • the charging circuit 100 includes a high pressure section 100a, in which the working gas A is a higher pressure of, for example 8 bar.
  • the charging circuit 100 also includes a low-pressure section 100b, in which the working gas A has a low pressure of, for example, 2 bar.
  • the first partial regenerator 120a is activated, forms part of the charging circuit 100, and is flowed through by the working gas A.
  • the second partial regenerator 120b is used as a pressure accumulator 301, wherein the second partial regenerator 120b is not actively connected in the charging circuit 100, but serves as a buffer for the working gas A.
  • the mass of the working gas A in the charging circuit 100 is changed by shifting working gas A between the second dividing regenerator 120b and the charging circuit 100.
  • the valves 309 and 310 are opened, and the valves 307 and 308 and the valves 312, 313 and 314 are closed, so that the first Operaregenerator 120a forms part of the charging circuit 100 and the working gas A flows through, whereas the second Partregenerator 120b is separated from the charging circuit 100.
  • the pressure in the partial regenerator 120b is low, ie at 2 bar.
  • the working gas A in the high-pressure section 100a has a high pressure of 8 bar.
  • valve 312 In this state, an opening of the valve 312 results in working gas A flowing via the line 319 into the second partial regenerator 120b, so that 100 mass is taken from the charging circuit and the density and the pressure of the working gas in the charging circuit 100 thus decreases. Once the charging circuit 100 enough working gas A or a sufficiently large mass is removed, the valve 312 is closed again.
  • the pressure in the second partial regenerator 120b rises to a maximum of the pressure of the first
  • Partial regenerator 120a so that in a second operating state, the second Partregenerator 120b has an increased pressure.
  • the maximum achievable pressure is dependent on the ratio of the volume of the active charging circuit 100 and the partial regenerator 120b.
  • opening the valve 313 results in working gas A flowing from the second partial regenerator 120b into the low pressure section 100b via the line 317, so that mass is supplied to the charging circuit 100 and the density and pressure of the working gas A in the charging circuit 100 are thus increased increases.
  • the valve 313 is closed again.
  • partial regenerators 120b, 120c, 120d as shown for example in Figure 5.
  • the first partial regenerator 120a is part of
  • FIG. 7 shows a discharge circuit 200 with a first and a second partial regenerator 120a, 120b.
  • the discharge circuit 200 comprises a high-pressure section 200a, in which the working gas A has a higher pressure of, for example, 8 bar.
  • the discharge circuit 200 also includes a low pressure section 200b, in which the working gas A has a low pressure of, for example, 2 bar.
  • the first Operaregenerator 120 a is switched active, forms part of the Entladeniklaufes 200, and is traversed by the working gas A.
  • the second partial regenerator 120b is used as an accumulator 301a, wherein the second partial regenerator 120b is not actively connected in the charging circuit 100, but serves as a buffer for the working gas A.
  • the mass of the working gas A in the discharge circuit 200 is changed by exchanging working gas A between the second dividing regenerator 120 b and the unloading circuit 200.
  • the valves 309 and 310 are opened, and the valves 307 and 308 and the valves 312, 313 and 314 are closed, so that the first Operaregenerator 120a forms part of the Entladeniklaufs 200 and the working gas A flows through, whereas the second Partregenerator 120b is separated from the discharge circuit 200.
  • the pressure in the partial regenerator 120b is low, ie at 2 bar.
  • the working gas A in the high-pressure section 200a has a high pressure of 8 bar.
  • valve 312 In this state, an opening of the valve 312 has the consequence that working gas A flows via the line 319 in the second Partregenerator 120 b, so that the Entladeniklauf 200 mass is removed and thus the density and the pressure of the working gas in the discharge circuit 200 thus decreases. Once the discharge circuit 200 enough working gas A or a sufficiently large mass is removed, the valve 312 is closed again. The pressure in the second partial regenerator 120b rises to a maximum of the pressure of the first
  • Partial regenerator 120a so that in a second operating state, the second Operagenerator 120b has an increased pressure.
  • the maximum achievable pressure is dependent on the ratio of the volume of the active charging circuit 100 and the partial regenerator 120b.
  • opening the valve 313 causes working gas A to flow from the second part regenerator 120b into the low pressure section 200b via the line 317, so that the discharge circuit 200 is supplied with ground and thus the density and pressure of the working gas A in the discharge circuit 200 increases.
  • the valve 313 is closed again.
  • the second partial regenerator 120b as an accumulator 301a in order to change the mass of working gas A in the unloading circuit 200.
  • the first Operagenerator 120a forms part of the Entladeniklaufs 200 and is traversed by the working gas A, while the second, third and fourth Operagenerator 120b, 120c, 120d via valves from the Entladeniklauf 200 separately, but in this switchable.
  • the second, third and fourth Operagenerator 120b, 120c, 120d via valves from the Entladeniklauf 200 separately, but in this switchable.
  • Partial regenerators 120b, 120c, 120d can be connected via valves to the high-pressure section 200a or the low-pressure section 200b, so that a corresponding exchange of the working gas A between the respective partial regenerators 120b, 120c, 120d and the
  • Discharge cycle 200 takes place.
  • the charge cycle 100 and / or the discharge loop 200 may also include two or more pressure change devices 300.
  • FIG. 7 shows an embodiment of the invention Entladeniklaufs 200 comprising two pressure change devices 300. The first
  • Pressure change device 300 comprises, as previously described with Figure 7, the
  • the second pressure changing device 300 comprises a pressure vessel 301, lines 305, 306, valves 302, 303, and a compressor 304.
  • the charging circuit 100 and / or the discharge circuit 200 may include the first and / or the second pressure changing devices 300.
  • Figure 9 shows the performance of the inventive storage device 1 at full and part load.
  • the axis of abscissa shows for the charging process, the power Pz supplied to the storage device 1 via the electric motor 170 in percent, or shows for the
  • the maximum power Pzmax corresponds to the maximum possible power of the electric motor or of the generator.
  • the axis of ordinates shows the coefficient of performance of the charging process
  • the curve C includes a first curve section Cl and a second curve section C2 and shows the operating behavior of an inventive
  • Memory device 1 comprising two parallel partial regenerators 120a, 120b, as shown in Figures 6, 7 and 8.
  • the first curve section C 1 shows the course of the coefficient of performance during the charging process and the discharge efficiency with the in
  • Curve section C 1 runs between 70% and 100% of the supplied or discharged power Pz horizontally, which means that in the range between 70% and 100%, no change in the coefficient of performance or the discharge efficiency occurs.
  • the storage device 1 according to the invention thus has the advantage that it can also be operated during partial load operation during the charging and discharging process with a constant coefficient of performance during charging or constant efficiency during discharging.
  • the second curve section C2 shows that the memory device 1 according to the invention comprising two partial regenerators 120a, 120b can also be operated at a supplied or discharged power Pz of below 70% of the maximum power. This second curve section C2, which extends over a
  • Partial load range between about 45% and 70% is achieved by adjusting the
  • Vorleitizer 110a, 140a achieved or by adjusting the Vorleitizer 210a and 250a.
  • the second curve section C2 thus has on the one hand the disadvantage that the coefficient of performance during charging or the efficiency during discharge decrease.
  • Curve section C2 has the advantage that the power consumption or output of the According to the invention, the memory device 1 can be operated in a partial power range between 45% and 100% of the maximum supplied or discharged power Pztnax.
  • the curve B shows the course of the coefficient of performance of the heat pump process or the efficiency of the gas turbine process for the charging and discharging process for a
  • the storage device 1 without density change device 300, so that the curve B is achieved only by adjusting the Vorleitrate 110a, 140a or by adjusting the Vorleitrate 210a and 250a. It can be seen from a comparison of the course of the curves B and C that the storage device 1 according to the invention has the advantage that it has a constant or substantially constant course of the coefficient of performance or efficiency in the partial load range between 70% and 100%.
  • the curve D shows the curve of the coefficient of performance of the heat pump process or the efficiency of the gas turbine process for the charging or discharging for a
  • Memory device 1 with three Operageneratoren 120a, 120b, 120c, wherein, for example, in the first Partregenerator 120a, the heat is stored, and wherein the second and the third Partregenerator 120b, 120c are used as a fluid storage.
  • the heat could also be stored in the second or third partial regenerator 120b, 120c so that the remaining two partial regenerators form the fluid reservoir.
  • the first curve section D 1 shows the course of the coefficient of performance during the charging process and the discharge efficiency with the in
  • Curve section Dl extends between 50% and 100% of the supplied or discharged power Pz horizontally, which means that in the range between 50% and 100% no change in the coefficient of performance or the efficiency during discharge occurs.
  • the second curve section D2 which extends over a partial load range between about 25% and 50%, is achieved by adjusting the Vorleitizer 110a, 140a and the Vorleitizer 210a and 250a.
  • the curve E shows the course of the coefficient of performance of the heat pump process and the efficiency of the gas turbine process for the loading and unloading for a
  • Memory device 1 with four Operageneratoren 120a, 120b, 120c, 120d wherein, for example, in the first Partregenerator 120a, the heat is stored, and the second, third and fourth Partregenerator 120b, 120c, 120d used as a pressure accumulator.
  • Curve section E 1 shows the course of the coefficient of performance during the charging process or the
  • the first curve section El runs between 35% and 100% of the maximum applied power or dissipated power P z horizontal, which means that in the range between 35% and 100% no change in the coefficient of performance or the efficiency occurs during unloading.
  • This second curve section E2 which extends over a partial load range between approximately 10% and 35%, is achieved by adjusting the guide vanes 110a, 140a or the guide vanes 210a and 250a.
  • FIGS. 10, 11 and 12 show, by way of example, possible operating methods of FIG
  • FIG. 10 shows, by way of example, a possible course of operation of the memory device 1, for example in an island mode in which an electrical network is operated only with wind and / or solar energy.
  • the course of the curve F shows in function of the time of the
  • Memory recorded electrical power said electrical power is preferably the excess power present in the electrical network.
  • the storage device 1 is operated in heat pump mode and the energy stored via the charging circuit 100, so that energy is stored according to the course of the curve H.
  • the heat pump in accordance with the excess electrical power in the network,
  • the regenerator 120 is increasingly supplied heat energy.
  • the curve H shows the heat energy stored in the regenerator 120, the curve H starts with a storage charge of 0%, and the regenerator 120 is completely filled up to a storage charge of 100%.
  • the electrical network constantly requires additional energy, so that the regenerator 120 must be discharged via the discharge circuit 200.
  • the curve J shows a possible discharge operation of the storage device 1 as a function of time. The curve J thus shows the operation of the final circuit 200.
  • the second turboexpander 250 or the generator G is first operated at 100% of the rated power Pz max , then with a partial load of 20%, then again with partial load of 80% and then continue with
  • the regenerator 120 is increasingly withdrawn heat energy.
  • the curve I shows the heat energy stored in the regenerator 120, wherein the curve I starts with a storage charge of 100%, and wherein the regenerator 120 is completely deflated over time, up to a storage charge of 0%.
  • FIG. 11 shows the operating behavior of the storage device 1 when used for network stabilization of an interconnected electrical grid, it does not matter whether the electrical grid comprises renewable energy sources or not.
  • the storage device 1 is constantly driven in a partial load range
  • the curve L shows an example of a course during a phase during which too much electrical power is present in the interconnected network.
  • the course of the curve L shows, as a function of time, the excess electrical power taken from the electrical network.
  • the storage device 1 is operated in heat pump mode and the energy is taken from the motor M via the charging circuit 100 and stored in the regenerator 120, so that energy is stored according to the course of the curve L.
  • the storage device 1 is initially operated continuously with a low load load of 20%.
  • the storage device 1 is thus quasi in a Lauer ein to remove the power grid in a short time electric power. It is the
  • Charging circuit 100 or the heat pump 2 according to the excess electrical power in the network as shown in curve K, for example by first with 20%> the rated power Pz max is driven, then with full load of 100%, then with a partial load of 40%, and then again with different partial loads. In this case, the regenerator 120 is increasingly supplied heat energy.
  • the curve L shows the in
  • Regenerator 120 stored thermal energy, wherein the curve L starts with a storage charge of 0%, and wherein the regenerator 120 is completely filled, up to a storage charge of 100%.
  • the curve O shows an example of a course during a phase during which tends to be present in the electrical grid tends to low electrical power.
  • the course of the curve O shows the electric power supplied to the electrical network as a function of time.
  • the storage device 1 is operated with the discharge circuit 200 and the energy taken from the regenerator 120 and fed via the generator G in the electrical grid, so that electric power is fed according to the course of the curve O.
  • the storage device 1 is initially operated continuously with a low partial load of 20%.
  • the storage device 1 is thus quasi in a Lauergna to supply the composite network in a short time electrical power.
  • the discharge circuit 200 is operated according to the electrical power required in the network, as shown in curve O, for example, first with 20% of the nominal power Pz max , then with full load of 100%, then with a partial load of 20%, and then again with different partial loads.
  • the regenerator 120 is increasingly dissipated heat energy.
  • the curve N shows the heat energy stored in the regenerator 120, wherein the curve L starts with a storage charge of 100%, and the regenerator 120 is completely emptied, up to one
  • FIG. 12 shows, by way of example, an operation of the storage device 1 according to the invention, during which recording or delivery of electrical power takes place, depending on the network requirement. This mode is particularly suitable for network stabilization.
  • FIG. 12 shows, with the curve P, a heat pump operation of the storage device 1 as a function of time.
  • the regenerator 120 as can be seen from the curve Q,
  • the curve R shows a turbine operation of the storage device 1 as a function of time.
  • the curve R thus shows the operation of the Endladeniklaufes 200.
  • the transition of the operation between the curve P and R is such that starting from the charging circuit 100, the regenerator 120 in the discharge circuit 200 Ent is switched so that the regenerator 120 are withdrawn via the gas turbine operation heat can.
  • the decrease in the heat energy stored in the regenerator 120 can be seen from the course of the curve Q.
  • FIG. 12 shows, with the curve T, a heat pump operation of the storage device 1 in FIG
  • the curve W shows a gas turbine operation of the storage device 1 as a function of time.
  • the curve W thus again shows the operation of the Entladenikonnes 200. This is the
  • Regenerator 120 as seen from the curve Q, extracted heat energy and fed electrical power to the electrical network.
  • the storage device 1 according to the invention is operated continuously in an advantageous method using the method illustrated in FIG. FIG. 13 shows an example of a method such as that of the invention
  • the curve P shows the absorbed power in%, which is reduced from 100% of the current power to 70%.
  • the curve X shows the change in the density in the charge circuit 10 in% 0.
  • the curve X shows that the density in the charge circuit 100 is reduced, which, however, requires a certain amount of time.
  • the curve Z shows the relative position of the guide wheels 110a, 140a.
  • the Vorleitradver ein initially has the relative value 80. In order to reduce the power consumption of the charging circuit 100 or the storage device 1 quickly, the Vorverradver ein is changed to the relative value 30, with the result that the angle of the guide wheels is changed, the position of the Vorleitrate later restored to the original relative value 80th is returned again.
  • Vorleitradver ein has, as can be seen from the curve P with the result that the power absorbed by the motor M P drops rapidly.
  • the combination of Vorleitradver ein shown in Figure 12 of the guide wheels 110a, 140a and density change of the working gas A has the consequence that the power P can be changed in a short time.
  • FIG. 12 shows a
  • an increase in the power P received by the memory device 1 can also be effected by briefly increasing the absorbed power by changing the leading wheel position, then changing the density in the working gas A, and the
  • Impeller position returns to its original position as soon as the changed density has caused the recorded power corresponds to the specified power.
  • the method described can be used analogously in the discharge circuit 200, by the
  • Discharge circuit 200 output electric power can be changed faster that, as shown in Figure 13, the Vorleitrad ein the stator 210a, 250a is changed in the discharge circuit 200, wherein the density of the working gas A is changed, and wherein the Vorleitrad ein after a certain time , as shown in Figure 13, back to the starting position.
  • Another method of rapidly changing the power consumed by the invented memory device 1 is to change the original speed of the compressor and expander. Such a speed change may be in place of
  • Position change of the Vorleitrate or in combination with the change in position of the Vorleitrate be used.
  • the speed is preferably only temporarily changed, as shown in the curve Z, until the density control can ensure the desired target value alone, so that the speed is again operated at the original speed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un dispositif d'accumulation courant- chaleur-courant (1) comprenant un circuit de charge (100) ainsi qu'un circuit de décharge (200) destinés à transporter un gaz de travail (A), le circuit de charge (100) ainsi que le circuit de décharge (200) comprenant un régénérateur (120) commun, lequel est en liaison fluidique réversible soit avec le circuit de charge (100) soit avec le circuit de décharge (200), afin de constituer un circuit fermé et afin d'amener le gaz de travail (A) au régénérateur (120). Le circuit de charge (100) comprend un premier turbocompresseur (110) ainsi qu'un premier turbo-détendeur (140), le premier turbocompresseur (110) étant entraîné par le premier turbo-détendeur (140) ainsi que par un moteur électrique (170). Le circuit de décharge (200) comprend un deuxième turbo-détendeur (250) et un deuxième turbocompresseur (210), le deuxième turbo-détendeur (250) entraînant le deuxième turbocompresseur (210) ainsi qu'un générateur (290). Le dispositif d'accumulation comprend également un dispositif de régulation (500) ainsi qu'un dispositif de modification de densité (300), lesquels permettent de modifier la pression du gaz de travail (A) dans le circuit de charge (100) et/ou dans le circuit de décharge (200) de manière commandable, afin de réguler la puissance pouvant être absorbée par le premier turbocompresseur (110) ou la puissance pouvant être délivrée par le deuxième turbo-détendeur (250).
EP16805013.6A 2015-11-10 2016-11-10 Dispositif de stockage de courant-chaleur-courant et son procede de compensation de charge Not-in-force EP3374603B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15193987 2015-11-10
PCT/EP2016/077319 WO2017081186A1 (fr) 2015-11-10 2016-11-10 Dispositif d'accumulation courant-chaleur-courant et procédé de régulation de charge de ce dernier

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EP3374603A1 true EP3374603A1 (fr) 2018-09-19
EP3374603B1 EP3374603B1 (fr) 2019-08-14

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EP3532710B1 (fr) 2016-10-26 2020-08-26 Peter Ortmann Dispositif de stockage d'énergie et procédé de stockage d'énergie thermique

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Publication number Priority date Publication date Assignee Title
FR2916101B1 (fr) 2007-05-11 2009-08-21 Saipem Sa Installation et procedes de stockage et restitution d'energie electrique
EP2574739A1 (fr) 2011-09-29 2013-04-03 Siemens Aktiengesellschaft Installation de stockage d'énergie thermique et son procédé de fonctionnement
DE102011088380A1 (de) * 2011-12-13 2013-06-13 Siemens Aktiengesellschaft Energiespeichervorrichtung mit offenem Ladekreislauf zur Speicherung saisonal anfallender elektrischer Überschussenergie
GB2501685A (en) 2012-04-30 2013-11-06 Isentropic Ltd Apparatus for storing energy
DE102013217607B4 (de) * 2013-09-04 2023-12-07 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren zum Bereitstellen von Dampf, Verfahren zum Speichern und späteren Bereitstellen von Energie, Dampfbereitstellungsvorrichtungund Verwendung einer Dampfbereitstellungsvorrichtung

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