DE102016120664A1 - Heat storage system - Google Patents

Abstract

The invention relates to a heat storage system (10) for storing thermal energy, comprising a solid reservoir (12) having a plurality of memory blocks (14) having outer sides (58) arranged to one another, the memory blocks (14) having at least one longitudinal through opening (16) arranged longitudinally. and / or on its outer side (58) at least one longitudinally formed recess (18), and are arranged to each other, that at least one channel (20) through the recess (18) and / or the through opening (16) Inlet opening (22) and an outlet opening (24) arranged at a distance from the inlet opening (22), a heat transfer medium in direct contact at least in sections with the channel (20), a loading loop (32) having one with the inlet opening (22) of the channel (20) connected first supply line (36) for supplying thermally loaded heat transfer medium and with a the outlet opening (24) connected first discharge means (38) for balancing the supplied heat transfer medium, and / or a discharge circuit (34) having a with the inlet opening (22) of the channel (20) connected second discharge means (46) for discharging the thermally loaded heat transfer medium , and a second supply means (48) connected to the outlet opening (24) for balancing the discharged heat transfer medium.

Description

The invention relates to a thermal storage system for storing thermal energy, the use of a thermal storage system for storing thermal energy and a method for storing thermal energy.

In the course of the world's dwindling raw materials for energy production, the generation of renewable energy is becoming increasingly important. Solar power plants, for example, generate heat from solar power and fed to a power plant to generate electricity. The energy from solar power is coupled to the sunlight and is therefore subject to strong fluctuations. At particularly sunny times, energy production from solar power can be higher than energy demand, while in cloudy times or during the night, little or no energy can be gained from the solar power plant. There is therefore a need to store excess energy from the solar power plant so that this energy can be used at a later time.

A device and system for buffering thermal energy is for example from the DE 10 2009 060 911 A1 known. The device has a solid storage and a single-pipe formed piping system that passes through the solid reservoir and is traversed by an energy carrier medium. In order to be able to charge and discharge the solid storage medium quickly and evenly with thermal energy, heat-conducting elements are provided which each form heat transfer areas with the individual pipes and which extend into the regions of the solid storage tank which are free of the individual pipes. In this case, the heat-conducting elements have a higher thermal conductivity than the solid storage.

There is a regular need to optimize heat storage systems to reduce manufacturing costs and increase heat storage efficiency.

It is the object of the invention to provide a heat storage system for storing thermal energy, which is economical to produce, and can be stored with the thermal energy in a simple manner.

The object is achieved by a heat storage system according to the features of claim 1, by a use of a heat storage system according to the features of claim 9 and by a method for storing thermal energy according to the features of claim 10. Preferred embodiments of the invention are in the dependent claims and the following description, each of which individually or in combination may constitute an aspect of the invention.

According to the invention, a heat storage system is provided for storing thermal energy, comprising a solid reservoir having a plurality of mutually arranged outer sides having memory blocks, wherein the memory blocks have at least one longitudinally disposed through opening and / or on its outer side at least one recess formed in the longitudinal direction, and arranged to each other in that at least one channel with an inlet opening and an outlet opening spaced from the inlet opening is formed by the depression and / or the through opening,
a heat transfer medium in direct contact with the channel, at least in sections,
a Beladekreislauf with a connected to the inlet opening of the channel first supply means for supplying thermally loaded heat transfer medium and with a
the outlet opening connected to the first discharge means for balancing the supplied heat transfer medium, and / or
a discharge circuit having a first discharge means connected to the inlet opening of the channel for discharging the thermally loaded heat transfer medium, and a second supply means connected to the outlet opening for compensating the discharged heat transfer medium.

Thermal energy is preferably understood as meaning a solar thermal heat energy generated from a solar power plant and / or solar power plant and / or thermal waste heat from industry and / or other waste heat or heat energy made available.

A depression is a groove, groove, groove and / or groove formed in the outside of a memory block in a longitudinal direction.

The through opening is preferably a continuous recess. Particularly preferably, the through opening of a memory block forms a channel section, so that the channel is formed by arranging a plurality of memory blocks relative to one another. Particularly preferably, the through-opening is circular in a plane perpendicular to the longitudinal direction of the channel and / or of the channel section.

The longitudinal direction of the recess and / or the continuous opening is preferably designed to be rectilinear. In this way, preferably center stones and / or the inlet opening and / or the outlet opening forming endstones of the solid reservoir are provided. Particularly preferably, the longitudinal direction has a curvature, wherein the curvature may be particularly preferably arcuate, quarter-circle and / or semicircular. In this way, endstones of the solid reservoir can be provided.

Under the heat transfer medium is basically any heat transfer medium suitable for the transfer of heat. Preferably, the heat transfer medium is water and / or water vapor that is preferably supplied under high pressure to the channel of the solid reservoir. The heat transfer medium is particularly preferably air and / or tin, with tin having particularly advantageous thermal properties for the transfer of heat energy.

The term "connected" in connection with the supply line device and / or discharge device of the loading cycle and / or the discharge circuit is to be understood as meaning a connection which permits transmission of the heat transfer medium.

The heating storage system thus has a solid storage, which is formed by a plurality of mutually arranged memory blocks. The memory blocks have a recess formed in the longitudinal direction and / or a through opening, wherein the memory blocks are arranged relative to one another such that a channel with an inlet opening and an outlet opening is formed by the recess formed in the memory blocks and / or the through opening. The heating storage system also has a Beladekreislauf for thermal loading of the solid storage and a discharge circuit for thermal discharge of the solid storage. The loading cycle comprises a first supply device connected to the first inlet opening of the channel for supplying a heat transfer medium, which is thermally loaded, preferably from a solar power plant, and a first discharge device connected to the outlet opening for balancing the supplied heat transfer medium. Thus, a thermally loaded, ie heated and / or heated heat transfer medium is supplied to the solid storage via the inlet opening. To compensate for the supplied thermally loaded heat transfer medium, thermally discharged heat transfer medium, ie heat transfer medium, which has given heat to the memory blocks, discharged through the outlet from the solid storage and preferably fed to the solar power plant for renewed thermal loading. The discharge circuit has a second discharge device connected to the inlet opening of the channel for discharging the thermally loaded heat transfer medium, ie heat transfer medium, which was preferably heated and / or heated by the previously thermally loaded storage blocks, from the solid storage, so that the discharged thermally laden heat transfer medium a Power plant or a power plant device can be supplied to generate electricity. To compensate for the discharged thermally laden heat transfer medium from the solid storage, thermally discharged heat transfer medium, ie heat transfer medium, which has given heat to generate energy in the power plant, fed to the channel via the outlet opening. In this way, a casing-free solid storage is provided, which can be easily thermally loaded and thermally discharged. The fact that the solid storage is formed free of tubing, the manufacturing cost of the memory can be reduced. As a result of the casing-free design of the solids reservoir, the heat transfer medium is in direct contact with the storage block, so that heat transfer losses can be reduced, whereby the efficiency of the heat storage system can be increased.

Basically, the memory blocks may be formed differently from each other. In a preferred development of the invention, it is provided that the memory blocks have a first end face and a second end face arranged at a distance from the first end side in the longitudinal direction of a memory block, and the outer sides between the first end face and the second end face are formed parallel to the longitudinal direction of the memory block, wherein the first outer side is parallel and spaced from the second outer side and the third outer side is parallel and spaced from the fourth outer side. In this way, the memory blocks are formed cuboid, so that the memory blocks can be arranged to each other in a simple manner.

In a preferred development of the invention, it is provided that the depression is formed in a corner region between the first outer side and the third outer side and / or in a corner region between the first outer side and the fourth outer side and / or in the second outer side. If the depression is formed in the corner region between the first outer side and the third outer side and / or between the first outer side and the fourth outer side, then the depression is preferably designed as a rectilinear groove which preferably has a quarter-circle-shaped profile in a plane perpendicular to the longitudinal direction of the storage block , The recess on the fourth side is preferably formed as a straight-line throat, which preferably comprises a semicircular profile in a plane perpendicular to the longitudinal direction of the storage block. This way, in easily be formed by the arrangement of multiple memory blocks a channel.

An advantageous development of the invention is that the through opening is guided from the first end side through the memory block to the second end face. In this way, a storage block is provided which preferably has a straight through opening. Thus, preferably centerstones or memory blocks, which are arranged in the middle of the solid reservoir, are provided. Particularly preferably, it is provided that the through opening is guided from the first end side or the second end side through the storage block opens into one of the outer sides of the storage block. In this way, the through opening preferably has a curvature. This is particularly suitable for endstones or memory blocks, which are arranged at the end of the solid reservoir. The respective through opening of a memory block forms a channel section of the channel.

According to a preferred embodiment of the invention, it is provided that the memory blocks have on the first end face first connecting elements and / or on the second end face to the first connecting elements corresponding first connection receptacles. In this way, the memory blocks can preferably be positively connected to each other in the longitudinal direction.

In this connection, a preferred development of the invention provides that the first connecting elements are a dovetail joint, and the first connecting receptacles have corresponding tines. In this way, a first memory block with the first end face having the dovetail connection can be arranged in a form-fitting manner to the second end face of a second memory block having the tines. Thus, preferably a directed in the longitudinal direction of the channel tensile connection between the memory blocks can be provided.

In this connection, a preferred development of the invention provides that the dovetail connection and / or the prongs are formed tapering starting from the second outer side in the direction of the first outer side. In this way, the insertion of the dovetail connection into the corresponding prongs for connection of the storage blocks can be simplified, whereby time and costs in the production of the solid storage can be reduced.

In principle, the outer sides of the memory blocks can be designed to be flat, so that in the case of a plurality of memory blocks arranged to each other, the outer sides can be stumped. A preferred embodiment of the invention is that the memory blocks have on the second outer side second connecting elements and / or on the first outer side to the second connecting elements corresponding second connection receptacles. It is preferably provided that the second connecting elements are in one direction perpendicular to the plane of the second outer side aligned one or more projections, which are particularly preferably cylindrical and / or cuboid. The second connection receptacles are recesses corresponding to the projections of the second outer side, which are particularly preferably aligned in a direction perpendicular to the plane of the first outer side. In this way, the first outer side of a first memory block can be positively connected to the second outer side of a second memory block in a simple manner.

An advantageous development is that the butt joints of the memory blocks are glued. In this way, the memory blocks can be materially interconnected. In addition, the butt joints can be sealed, so that no heat transfer medium can escape via the butt joints. Particularly preferably, the bonding of the butt joints of the respective memory blocks via a high temperature adhesive, which has a temperature resistance greater than 400 ° C, preferably greater than 700 ° C and most preferably greater than 1000 ° C.

According to a preferred embodiment of the invention it is provided that the memory blocks are arranged in offset from each other. In this way, the structural integrity of the solid reservoir can be increased.

An advantageous development of the invention lies in the fact that the memory blocks are arranged relative to one another in such a way that the first channel is formed meander-shaped. In this way, the channel length can be increased within the solid storage for thermal loading of the solid storage. In addition, the inlet opening and the outlet opening can thus be formed on one side of the solids reservoir. If the inlet opening and the outlet opening are formed on one side of the solids store, preferably the side of the solids store having the inlet opening and the outlet opening can have a fixed bearing, wherein the part of the solids store having the channel has a sliding bearing. Thermal changes in length of the solid storage are not due to the sliding storage with special needs. Thus, the loading circuit and / or unloading circuit connected to the inlet opening and / or outlet opening can be decoupled from the thermally induced changes in length of the solids store in the course of the thermal loading and / or unloading. In this way, manufacturing costs of the heat storage system can be reduced.

In an advantageous development of the invention it is provided that the inlet opening and / or the outlet opening is preceded by a valve device. Preferably, the valve device is periodically controllable. In this way, it is controllable that thermally loaded heat transfer medium from a solar power plant is supplied to the channel for thermal loading of the storage blocks over a first period via the first supply device and via the inlet opening and thermally laden heat transfer medium from the heat storage via the inlet opening and via a second time period the second discharge device is removed and fed to a power plant for generating electricity. Thus, loading and unloading of the solid reservoir can take place with only one channel. A reduced number of channels or only one channel can increase the structural integrity of the solid reservoir.

A preferred embodiment of the invention provides that the loading cycle and / or the discharge circuit has a heat exchanger. If the heat exchanger is arranged in the loading cycle, thermal heat generated in the solar power plant is preferably transferred in the heat exchanger to the heat transfer medium and then fed to the solid storage for storage. From the solids storage via the outlet opening in the direction of the solar power plant passed heat transfer medium is also fed to the heat exchanger. In this way, a heat transfer medium different from the heat storage system can be used in the solar power plant. The same applies to the discharge cycle.

Basically, only one channel is sufficient for the thermal loading and unloading of the solid storage. In a preferred embodiment of the invention, it is provided that the solid reservoir has a plurality of channels.

In this connection, a preferred development of the invention provides that, in the case of the plurality of channels, a first channel is the loading cycle and a second channel is the unloading cycle. In this way, the loading cycle and the discharge cycle are segregated by canals, so that parallel or simultaneously with the thermal loading, a thermal discharge can take place.

The memory blocks can in principle be made of any material for storing thermal energy. Preferably, the storage blocks are made of a concrete. In a preferred embodiment of the invention it is provided that the memory blocks are made of fly ash, preferably made of ceramic fired fly ash. For this purpose, preferably fly ash, water and organic additives are mixed, so that the resulting matrix has a plastic property. The plastic matrix is filled under pressure into molds, released from the mold and fed to an oven. At a temperature of between 1,000 ° C and 1,200 ° C, the fly ash sinters and individual globules of the fly ash fuse with their surroundings and form a firm connection. Alternatively or in addition, it is provided that the storage blocks are made of blast-furnace slag, preferably of ceramic-fired blast-furnace slag. Blast furnace slag is formed during iron smelting and is tapped from the blast furnace as waste product at a temperature of more than 1,600 ° C. The slag is poured into molds to form the memory blocks and solidified. Furthermore, already tapped and solidified blast furnace slag can be granulated and fed to a ceramic processing process to form the memory blocks.

A preferred embodiment of the invention provides that the solid storage is arranged in a housing, wherein the housing preferably has a thermal insulation. In this way, heat losses of the solid storage can be reduced.

The invention also relates to the use of a heat storage system, comprising a solid storage with a plurality of mutually arranged outer sides having memory blocks, wherein the memory blocks have at least one longitudinally disposed through opening and / or on its outer side at least one recess formed in the longitudinal direction, and are arranged to each other in that at least one channel with an inlet opening and an outlet opening formed at a distance from the inlet opening is formed by the recess and / or the through opening, a heat transfer medium in direct contact with the channel at least in sections, a loading cycle having a first connected to the inlet opening of the channel Lead-in device for supplying thermally loaded heat transfer medium and a first discharge means connected to the outlet opening for balancing the supplied heat transfer medium medium, and / or a discharge circuit with a first discharge means connected to the inlet opening of the channel for discharging the thermally loaded heat transfer medium, and a second supply line connected to the outlet opening for balancing the discharged heat transfer medium.

The invention also relates to a method for storing thermal energy, comprising the steps:

• - thermisch erwärmtes Wärmeträgermedium über die Einlassöffnung dem Kanal zugeführt wird und
• - thermisch entladenes Wärmeträgermedium über die Auslassöffnung abgeführt wird, und zur thermischen Entladung der Speicherblocke über den Entladekreislauf:
• - thermisch beladenes Wärmeträgermedium über die Einlassöffnung abgeführt und
• - thermisch entladenes Wärmeträgermedium über die Auslassöffnung dem Kanal zugeführt wird.

Providing a heat storage system, comprising a solid reservoir having a plurality of mutually arranged outer sides having memory blocks, the memory blocks at least one longitudinally disposed through opening and / or on its outer side at least one longitudinally formed recess, and are arranged to each other that through the recess and / or the continuous opening is formed at least one channel with an inlet opening and an outlet opening spaced from the inlet opening, a heat transfer medium in direct contact with the channel at least in sections, a loading circuit with a first supply line connected to the inlet opening of the channel for supplying thermal laden heat transfer medium and connected to the outlet opening first discharge means for balancing the supplied heat transfer medium, and / or a discharge ekreislauf with a connected to the inlet opening of the channel first discharge means for discharging the thermally laden heat transfer medium, and connected to the outlet opening second supply means for equalizing the discharged heat transfer medium, wherein for thermal loading of the storage blocks via the loading cycle:

• - Thermally heated heat transfer medium through the inlet port is fed to the channel and
• - Is discharged thermally discharged heat transfer medium via the outlet opening, and for the thermal discharge of the storage blocks via the Entladekreislauf:
• - thermally loaded heat transfer medium via the inlet port and discharged
• - Thermally discharged heat transfer medium via the outlet opening is fed to the channel.

Finally, it is pointed out that the preferred and / or advantageous developments of the heat storage system also apply to the use according to the invention and the method according to the invention.

• 1 eine schematische Darstellung eines Wärmespeichersystems, gemäß einem bevorzugten Ausführungsbeispiel der Erfindung,
• 2 eine Ansicht eines Speicherblocks, gemäß einem ersten bevorzugten Ausführungsbeispiel der Erfindung,
• 3 eine Ansicht mehrerer im Versatz zueinander angeordneter Speicherblöcke, gemäß dem ersten bevorzugten Ausführungsbeispiel der Erfindung,
• 4 eine Ansicht eines Speicherblocks, gemäß einem zweiten bevorzugten Ausführungsbeispiel der Erfindung.

The invention will now be described by way of example with reference to the accompanying drawings with reference to preferred embodiments, wherein the features shown below, both individually and in combination may represent an aspect of the invention. Show it:

• 1 a schematic representation of a heat storage system, according to a preferred embodiment of the invention,
• 2 a view of a memory block, according to a first preferred embodiment of the invention,
• 3 a view of a plurality of mutually offset memory blocks, according to the first preferred embodiment of the invention,
• 4 a view of a memory block, according to a second preferred embodiment of the invention.

In 1 is a schematic representation of the heat storage system 10 shown for storing thermal energy. The heat storage system 10 has a solid reservoir 12 with a plurality of mutually arranged outsides having memory blocks 14 on. A detailed view of the memory blocks is in the 2 to 4 given. The memory blocks 14 have a longitudinally disposed through opening 16 and / or on its outside at least one recess formed in the longitudinal direction 18 on, and are arranged to each other, that through the depression 18 and / or the through opening 16 a channel 20 with an inlet opening 22 and one to the inlet opening 22 spaced trained outlet opening 24 is trained. Furthermore, through the memory blocks 14 one from the channel 20 different second channel 26 with a second inlet opening 28 and one to the second inlet port 28 spaced second outlet opening 30 educated. In this way, a piping-free solid storage 12 provided, thereby reducing material and manufacturing costs of the heat storage system 10 can be reduced.

The heat storage system 10 also has a loading cycle 32 for thermal loading of the solid reservoir 12 , and a discharge circuit 34 for thermal discharge of the solid reservoir 12 on.

The loading cycle 32 has a first supply device 36 for thermal loading of the solid reservoir 12 by supplying a thermally loaded heat transfer medium, and a first discharge means 38 to compensate for the supplied heat transfer medium.

The first supply line 36 is via a first valve device 40 with the inlet opening 22 of the canal 20 and with the second inlet opening 28 of the second channel 26 connected. On one end of the first supply line 36 , that of the inlet opening 22 is remote, is the first supply line 36 with a solar power plant 42 connected. In this way, via the first supply line device 36 one from the solar power plant 42 thermally loaded heat transfer medium via the inlet opening 22 the channel 20 and via the second inlet opening 28 the second channel 26 and thus the solid reservoir 12 for thermal loading of the storage blocks 14 be supplied.

The first discharge device 38 is via a second valve device 44 with the outlet opening 24 of the canal 20 and with the second outlet opening 30 of the second channel 26 connected. With one end of the first discharge device 38 , which faces away from the outlet opening, is the first discharge means 38 with the solar power plant 42 connected. In this way, to compensate for the supplied thermally loaded heat transfer medium, thermally discharged heat transfer medium via the outlet opening 24 and the second outlet opening 30 from the solid storage 12 dissipated and the solar power plant 42 be fed for renewed thermal loading.

The discharge cycle 34 has a second discharge device 46 for thermal discharge of the solid reservoir 12 , and a second supply device 48 to compensate for the discharged, thermally laden heat transfer medium.

The second discharge device 46 is at one end via the first valve device 40 with the inlet opening 22 of the canal 20 and the second inlet opening 28 of the second channel 26 connected to the discharge of the thermally laden heat transfer medium from the Feststoffspeieher 12. With one end of the second discharge device 46 , that of the second inlet opening 28 is remote, is the second discharge device 46 with a power plant 50 connected to power generation. In this way, the thermally loaded heat transfer medium from the solid storage 12 the power plant 50 be supplied for power generation.

The second supply device 48 is about the second valve device 44 with the outlet opening 24 of the canal 20 and with the second outlet opening 30 of the second channel 26 connected. With one end of the second supply line, that of the second outlet opening 30 is remote, is the second supply line 48 with the power plant 50 connected. In this way can compensate for the power plant 50 supplied thermally loaded heat transfer medium, thermally discharged heat transfer medium via the outlet opening 24 and the second outlet opening 30 the solid storage 12 be fed for renewed thermal loading.

Thus, a tubeless solid storage is provided which can be easily thermally loaded and thermally discharged. The fact that the solid storage is formed free of tubing, the manufacturing cost of the heat storage system can be reduced. In addition, the heat transfer medium is in direct contact with the storage blocks, so that heat transfer losses can be reduced.

The first valve device 40 and the second valve device 44 are each designed as a 4/2 way valve.

The thermal loading and the thermal discharge of the solid storage 12 occurs periodically. That way, the channel can 20 and the second channel 26 for thermal loading of the solid reservoir 12 and used for thermal discharge, reducing the number of channels 20 . 26 in the solid storage 12 reduced and the structural integrity of the solid reservoir 12 can be increased.

The majority of memory blocks 14 is arranged so that the channel 20 and the second channel 26 have a meandering course. In this way, the inlet opening and the outlet opening of the channel 20 and the second inlet opening 28 and second outlet opening 30 of the second channel 26 on one side of the solid reservoir 12 be formed so that these in a simple manner via the corresponding supply lines 36 . 48 and discharge devices 38 . 46 can be connected. The the inlet opening 22 . 28 and the outlet opening 24 . 30 having side of the solid reservoir 12 is firmly stored or has a fixed storage 51 on. The part of the solid reservoir 12 , the channels 20 . 26 has, is slidably mounted or has a sliding bearing 53 on. Thermal conditional changes in length of the solid reservoir 12 be through the sliding storage 53 not disabled. In this way, the loading cycle 32 and / or discharge circuit 34 from the thermally induced changes in length of the solid reservoir 12 be decoupled. Thus, manufacturing costs of the heat storage system can 10 be reduced.

In 2 is one out 1 known memory block 14 represented, wherein the in 1 shown solid storage 12 from a plurality of memory blocks 14 is formed. The memory block 14 is cuboid and has a first end face 52 and one in the longitudinal direction 54 a memory block 14 to the first front side 52 spaced second end face 56 on. The outsides 58 are between first front page 52 and the second end face 56 parallel to the longitudinal direction 54 of the memory block 14 educated. The first outside 60 is parallel and spaced to the second outside 62 arranged. The third outside 64 is parallel and spaced to the fourth outside 66 educated.

In a corner area between the first outside 60 and the third outside 64 , as well as in a corner area between the first outside 60 and the fourth outside 66 are each one in the longitudinal direction 54 of the memory block 14 arranged recess 18 formed as a straight-line throat, which in a plane perpendicular to the longitudinal direction 54 of the memory block 14 each has a quarter-circle-shaped profile. On the second outside 62 is the depression 18 in the form of a rectilinear throat formed in a plane perpendicular to the longitudinal direction 54 of the memory block 14 shows a semicircular profile.

In 3 is a majority of 2 known memory blocks 14 shown, which are arranged in offset from each other. A first memory block 14 'adjoins, with its fourth outer side 66' at least in sections, the third outer side 64 "of a second memory block 14". A third memory block 14 '''is at least partially arranged with its first outer side 60''' on the second outer side 62 'of the first memory block 14' and the second outer side 62 "of the second memory block 14". The profile of the semi-circular recess 18 "formed on the second outer side 62" of the second memory block 14 "and the profile of the quarter-circle-shaped recess 18 in the corner region of the first outer side 60 '" and fourth outer side 66'"of the third memory block 14 '" In this way, the arrangement of a further fourth memory block (not shown) which at least in sections to the fourth outer side 66 '''of the third memory block 14''' and to the second outer side 62 'of second memory block 14 ", a channel 20 or a channel section is formed.

In 4 is a second embodiment of the memory block 14 shown, wherein the memory block 14 one from the first end 52 to the second end face 56 through opening 16 having. The opening 16 does not necessarily have to be from the first end 52 to the second end face 56 but may also preferably from the first end face 52 or second end face 56 open into one of the four outer sides.

The memory block 14 points to the first front page 52 as a swallowtail connection 72 trained first fasteners 74 , and on the second front 56 to the first fasteners 74 corresponding as tines 76 trained first connection recordings 78 on. Thus, preferably in the longitudinal direction of in 1 shown channel 20 directed tensile connection between the memory blocks 14 to be provided.

Starting from the second outside 62 towards the first outside 60 have the dovetail connection 72 and the tines 76 a tapered course on. In this way, the insertion of the dovetail connection 72 in the corresponding prongs 76 , to connect the memory blocks 14 be simplified with each other, reducing the time and expense in the production of the solid reservoir 12 can be reduced.

On the second outside 62 points the memory block 14 second connecting elements 80 in the form of several in a direction perpendicular to the plane of the second outer side 62 cuboidal projections on. On the first outside 60 are to the second connecting elements 80 corresponding second connection recordings 82 arranged. The second connection recordings 82 are preferably in a direction perpendicular to the plane of the first outside 60 aligned and to the projections of the second outside 62 corresponding recesses. In this way, the first outside 60 a first memory block 14 in a simple way with the second outside 62 a second memory block 14 be positively connected.

LIST OF REFERENCE NUMBERS

10

Heat storage system

12

Solid storage

14

memory block

16

Through opening

18

deepening

20

channel

22

inlet port

24

outlet

26

Second channel

28

Second inlet opening

30

Second outlet opening

32

Beladekreislauf

34

Entladekreislauf

36

First supply line

38

First discharge device

40

First valve device

42

Solar power plant

44

Second valve device

46

Second discharge device

48

Second supply line

50

power plant

51

Fixed storage

52

First front page

53

Sliding storage

54

Longitudinal memory block

56

Second front side

58

outsides

60

First outside

62

Second outside

64

Third outside

66

Fourth outside

72

dovetail joint

74

First connection element

76

prong

78

First connection recordings

80

Second connecting elements

82

Second connection recordings

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102009060911 A1 [0003]

Claims (10)

A thermal storage system (10) for storing thermal energy, comprising a solid reservoir (12) having a plurality of memory blocks (14) having outer sides (58), the memory blocks (14) having at least one longitudinal through opening (16) and / or on at least one recess (18) formed in its longitudinal direction (58) and arranged relative to one another such that at least one channel (20) with an inlet opening (22) through the recess (18) and / or the through opening (16). and an outlet opening (24) arranged at a distance from the inlet opening (22) is formed, a heat transfer medium which is in direct contact at least in sections with the channel (20), a loading cycle (32) having a first supply device (36) connected to the inlet opening (22) of the channel (20) for supplying thermally loaded heat transfer medium and a first discharge device (38) connected to the outlet opening (24) for balancing the supplied heat transfer medium; and or a discharge circuit (34) having a second discharge means (46) connected to the inlet opening (22) of the channel (20) for discharging the thermally loaded heat transfer medium, and a second supply means (48) connected to the discharge opening (24) for equalizing the discharged heat transfer medium , Heat storage system according to Claim 1 , characterized in that the memory blocks (14) a first end face (52) and a longitudinal direction (54) of a memory block (14) to the first end face (52) spaced second end face (56) arranged, and the outer sides (58) between the first end face (52) and the second end face (56) are formed parallel to the longitudinal direction (54), wherein the first outer side (60) is parallel and spaced from the second outer side (62) and the third outer side (64) parallel and spaced from the fourth Outside (66) are formed. Heat storage system according to Claim 2 , characterized in that the recess (18) in a corner region between the first outer side (60) and the third outer side (64) and / or in a corner region between the first outer side (60) and the fourth outer side (66) and / or is formed in the second outer side (62). Heat storage system according to one of Claims 2 or 3 , characterized in that the memory blocks (14) on the first end face (52) first connecting elements (74) and / or on the second end face (56) to the first connecting elements (74) corresponding first connection receptacles (78). Heat storage system according to Claim 4 , characterized in that the first connecting elements (74) is a dovetail joint (72) and the first connection receptacles (78) corresponding tines (76). Heat storage system according to one of Claims 2 to 5 , characterized in that the memory blocks (14) on the first outer side (60) second connecting elements (80) and / or on the second outer side (62) to the second connecting elements (80) corresponding second connection receptacles (82). Heat storage system according to one of Claims 1 to 6 , characterized in that the memory blocks (14) are arranged to each other so that the channel (20) is meander-shaped. Heat storage system according to one of Claims 1 to 7 , characterized in that the inlet opening (22) and / or the outlet opening (24) is preceded by a valve device (40). Use of a heat storage system (10) according to one of Claims 1 to 8th for storing thermal energy. A method of storing thermal energy, comprising the steps of: providing a heat storage system (10) according to any one of Claims 1 to 8th , wherein for the thermal loading of the storage blocks via the loading circuit (32): - thermally heated heat transfer medium via the inlet port (22) the channel (20) is supplied, and - thermally discharged heat transfer medium through the outlet opening (24) discharged from the channel (20) is, and for the thermal discharge of the storage blocks (14) via the discharge circuit (34): - thermally laden heat transfer medium via the inlet opening (22) dissipated and - thermally discharged heat transfer medium via the outlet opening (24) is fed to the channel (20).

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