DE102019207965B4 - Heat storage device and method for storing and/or providing heat - Google Patents

Abstract

Heat storage device (100), comprising a storage device (104), which has a storage medium (106) for storing heat, and a heat transfer device (102), through which heat can be supplied to the storage device (104) and/or heat can be removed from it, wherein the heat transfer device (102) has a first flow device (110) and a second flow device (112), each of which is in thermal contact with the storage device (104) and with each other, wherein through the first flow device (110) a first heat transfer medium (118) and A second heat transfer medium (120) can flow through the second flow device (112), the first flow device (110) being fluidically separated from the second flow device (112), characterized in that the storage device (104) is relative by means of an adjusting device (128). can be moved to the heat transfer device (102), and comprises one or more receptacles (132) for receiving and/or guiding storage medium (106), wherein the one or more receptacles (132) are at least approximately cylindrical, in particular at least approximately hollow cylindrical are.

Description

The invention relates to a heat storage device, comprising a storage device which has a storage medium for storing heat and a heat transfer device through which heat can be supplied to the storage device and / or heat can be removed from it, the heat transfer device having a first flow device and a second flow device, which are each in thermal contact with the storage device and/or with each other. A first heat transfer medium can flow through the first flow device and a second heat transfer medium can flow through the second flow device. The first flow device is fluidically separated from the second flow device.

The invention further relates to a method for storing and/or providing heat by means of a heat storage device.

Heat transfer devices are from the WO 2011/069 693 A1 , the DE 10 2009 006 788 A1 , the DE 20 2010 015 920 U1 , the DE 10 2009 059 090 A1 the DE 10 2004 020 993 A1 and the DE 10 2017 213 718 A1 known.

The invention is based on the object of providing a heat storage device of the type mentioned, which can be easily manufactured and loaded or discharged with high efficiency.

This object is achieved by a heat storage device according to claim 1 and by a method for storing and / or providing heat by means of a heat storage device according to claim 13.

The first flow device and the second flow device are each in thermal contact with the storage device. Heat transfer can thus take place from the first heat transfer medium to the storage medium of the storage device and/or the second heat transfer medium to the storage medium of the storage device and/or vice versa.

“Warm” and “cold” are preferably used as relative terms in the following. Heat transfer takes place in particular from the warm to the cold medium.

In order to supply heat to the heat storage device, the first flow device is flowed through, for example, by a warm first heat transfer medium, which releases its heat to the storage medium via the heat transfer device. The storage medium is in particular melted.

The storage medium of the storage device is or includes, for example, a phase change medium.

The phase change medium includes in particular nitrate salts or a mixture of different nitrate salts. It includes, for example, sodium nitrate and/or potassium nitrate and/or lithium nitrate. For example, a melting point of the phase change medium can be adjusted using different mixtures of the substances mentioned.

Alternatively, the phase change medium comprises, for example, a paraffin material.

To remove heat from the heat storage device, for example, a cold second heat transfer medium flows through the second flow device, to which the storage device releases its stored heat via the heat transfer device. The storage medium preferably solidifies in the process.

Additionally or alternatively, a heat transfer of heat from the warm first heat transfer medium to the second cold heat transfer medium can also be and/or be formed.

A heat transfer function between the different media can preferably be used when the respective medium - i.e. first heat transfer medium, second heat transfer medium and / or storage medium - is moved relative to at least one further medium.

In the case of the first and/or second heat transfer medium, a movement is preferably a flow through the respective flow device. With the storage medium, movement is possible using the adjusting device.

Due to the fluidic separation of the first flow device from the second flow device, different heat transfer media can be used for loading and unloading the heat storage device.

This allows, for example, a first warm heat transfer medium to pass through the first flow device and a second cold heat transfer medium at the same time flow through the second flow device. This enables, for example, simultaneous loading and unloading of the heat storage device.

Alternatively, one heat transfer medium can also flow while the other heat transfer medium is stationary and/or at rest.

Fluidically separated means in particular that the first flow device and the second flow device are fluidly separated from one another.

The first flow device and the second flow device in particular each have completely separate fluid circuits for the respective heat transfer media.

The first and second heat transfer media may be different media. Alternatively, it is conceivable that the first heat transfer medium and the second heat transfer medium are materially identical.

The first and/or second heat transfer medium are preferably liquids or gases or mixtures thereof. For example, the first and/or second heat transfer medium are water.

The first flow device and the second flow device are preferably in thermal contact with one another. Heat transfer from the first heat transfer medium to the second heat transfer medium or vice versa can preferably be implemented.

By moving the storage device by means of the adjusting device relative to the heat transfer device, additional parameters are preferably present which can be used to optimize loading or unloading of the heat storage device.

The storage device is preferably automatically movable relative to the heat transfer device by means of the adjusting device.

The movement of the storage device relative to the heat transfer device is preferably a linear movement along or against a direction of movement, which is arranged in particular perpendicular to a main extension direction of a tubular element of the first flow device.

The direction of movement is in particular arranged perpendicular to a longitudinal central axis of a tubular element of the second flow direction.

It can be advantageous if a receptacle is moved along the direction of movement to load the storage medium. In particular, a position of the heat transfer device remains unchanged. To discharge the storage medium, the receptacle is preferably moved in the opposite direction to the direction of movement.

By means of the tubular elements of the first and/or second flow device, a container in which the storage device and the heat transfer device are arranged can flow through, preferably horizontally with respect to a bottom wall of the container.

As an alternative to designing the movement of the storage device as a linear movement, it can be provided that the storage device can be rotated about an axis of rotation relative to the heat transfer device by means of the adjusting device.

Preferably, the adjusting device comprises an intermediate medium, by means of which one or more receiving containers of the storage device for receiving and/or guiding storage medium and the heat transfer device are connected to one another.

The one or more receptacles of the storage device are preferably connected to one another and/or to the heat transfer device in a thermally conductive manner by means of the intermediate medium.

The intermediate medium serves in particular to reduce a frictional resistance of a wall of the one or more receiving containers and/or an outer surface of a heat-conducting body of the heat transfer device.

It can be advantageous if the intermediate medium is designed as a thermally conductive layer between the storage device and the heat transfer device.

The intermediate medium is preferably an intermediate fluid.

Wax has proven to be a particularly suitable intermediate medium.

The storage device comprises one or more storage containers for holding and/or guiding storage medium. One or the other several receptacles are at least approximately cylindrical, in particular at least approximately hollow cylindrical. This is particularly advantageous when the respective receiving container rotates.

For example, the one or more receptacles are at least approximately hollow circular cylindrical.

It can be provided that the storage device comprises one or more receptacles for receiving and/or guiding storage medium, wherein the one or more receptacles can be rotated about one or more axes of rotation by means of the adjusting device. In particular, each of the receptacles is rotatable about an axis of rotation, the axes of rotation preferably being arranged at least approximately parallel to one another.

It can be advantageous if the one or more axes of rotation of the one or more receptacles are arranged at least approximately parallel to a main extension direction of a tubular element of the first and/or second flow device.

The one or more receptacles are designed, for example, as pipe sections.

The walls of the one or more receptacles are preferably thin-walled. This facilitates heat transfer from the storage medium to the first and/or second heat transfer medium and vice versa.

In the case of several receptacles, these are preferably designed to be essentially identical in terms of shape, material and/or volume. In this way, a homogeneous heat transfer can be achieved across the entire storage device.

Alternatively, it can be provided that different receiving containers are used. This means that even with several receptacles, heat transfer can be carried out at certain points.

It can be provided that the storage device comprises two or more than two receptacles for receiving and/or guiding storage medium, the two or more than two receptacles being rotatable by means of the adjusting device about two or more than two axes of rotation arranged at least approximately parallel to one another . In particular, at least two of the two or more than two receptacles can be rotated in opposite or same directions of rotation.

In this way, in particular, the overall power output of the heat storage device can be adjusted and/or regulated.

It can be advantageous if the receptacle is arranged above the heat transfer device or to the side of the heat transfer device with respect to a direction of gravity.

If the storage device comprises a plurality of receptacles for receiving and/or guiding storage medium, it can be advantageous if the heat transfer device is arranged, in particular centrally, between two of the several receptacles. In this way, direct thermal contact can preferably be formed between the two receiving containers and the heat transfer device.

If there are two receptacles, it may be advantageous for a displacement body to be arranged in each of the receptacles. The displacement bodies preferably serve, particularly during a discharge, for thermal contact between the storage medium and the respective heat transfer medium.

It can be advantageous if the first flow device and the second flow device each comprise a tubular element at least in sections. The tubular elements of the first and second flow devices are in thermal and/or mechanical contact with one another and/or with one or more walls of one or more receptacles of the storage device.

Preferably, one or more of the following elements comprise or are formed from a metallic material, for example steel: the tubular elements of the first and/or second flow devices, the wall(s) of the one or more receptacles.

Preferably, the storage medium and the first heat transfer medium and/or the storage medium and the second heat transfer medium are thermally coupled.

A thermal conductivity of the material of the tubular elements and/or the walls of the one or more receptacles is preferably in a range of approximately 30 W/(m.K) or more.

Preferably, the adjusting device comprises a control and/or regulating device for controlling and/or regulating an amount of heat provided. In particular, a movement of the storage device relative to the heat transfer device can be regulated by means of the control and/or regulating device in such a way that the heat storage device has a constant power output.

The statement “constant power output” refers in particular to power output with constant fluid parameters.

• - Geschwindigkeit eines oder mehrerer Aufnahmebehälter der Speichereinrichtung; und/oder
• - Temperatur des ersten Wärmeübertragungsmediums; und/oder
• - Temperatur des zweiten Wärmeübertragungsmediums; und/oder
• - Temperatur des Speichermediums; und/oder
• - Strömungsgeschwindigkeit des ersten Wärmeübertragungsmediums; und/oder
• - Strömungsgeschwindigkeit des zweiten Wärmeübertragungsmediums.

The control and/or regulating device of the actuating device preferably regulates and/or controls one or more of the following parameters:

• - Speed of one or more storage containers of the storage device; and or
• - temperature of the first heat transfer medium; and or
• - temperature of the second heat transfer medium; and or
• - temperature of the storage medium; and or
• - flow rate of the first heat transfer medium; and or
• - Flow rate of the second heat transfer medium.

The speed(s) of the one or more receptacles are preferably rotational speed(s).

In the case of several receptacles, it can be advantageous if the control and/or regulation device controls and/or regulates a direction of movement of the several receptacles, for example a direction of rotation, relative to one another.

In particular, temperature differences in the media mentioned can be controlled and/or regulated.

The control and/or regulation device preferably comprises one or more sensors and/or a control unit.

The control and/or regulation device is in particular a mechanical control and/or regulation device.

It can be provided that the heat transfer device comprises at least one electrical heating element which can be selectively supplied with electrical energy and which is in thermal contact with at least one of the flow device and/or the storage device.

This preferably enables the heat storage device to be charged electrically.

The heat transfer device in particular comprises a heat-conducting body which contacts at least one flow device and/or at least one receptacle of the storage device thermally and/or mechanically, in particular by means of an intermediate medium.

The heat-conducting body preferably encloses the first flow device along a main extension direction of a tubular element of the first flow device.

Preferably, the heat-conducting body encloses the second flow device along a main extension direction of a tubular element of the second flow device.

It can be advantageous if the heat-conducting body is made of a material that has a thermal conductivity of approximately 30 W/(m.K) or more.

For example, the heat-conducting body is formed from a metallic material or comprises a metallic material.

Alternatively, it can be provided that the thermally conductive body comprises or is formed from a thermally conductive polymer material.

The heat-conducting body can be in the form of a rib structure, in which, for example, ribs extend radially away from the tubular elements.

A contact area of the heat-conducting body, in particular by means of an intermediate medium, to a wall of a receptacle of the storage device is preferably approximately 10% or more, in particular approximately 20% or more, of a total geometric surface of the wall of the receptacle.

The contact area of the heat-conducting body, in particular by means of an intermediate medium, to a wall of a receptacle of the storage device is preferably approximately 70% or less, in particular approximately 50% or less, of a total geometric surface of the wall of the receptacle.

It can be advantageous if the heat-conducting body has a receiving device for receiving a receptacle of the storage device forms and in particular is at least approximately shell-shaped and / or channel-shaped.

According to the invention, a method for storing and/or providing heat by means of a heat storage device comprising a storage device and a heat transfer device is provided.

In the method, heat is supplied to the storage device or heat is removed from the storage device by means of a first heat transfer medium.

In the method, heat is also supplied to the storage device or heat is removed from the storage device by means of a second heat transfer medium.

The first heat transfer medium and the second heat transfer medium flow within the heat transfer device through flow devices that are fluidly separated from one another. The storage device is moved relative to the heat transfer device.

The method according to the invention preferably has one or more of the features and/or advantages described in connection with the heat storage device according to the invention.

Preferably, one or more receptacles of the storage device are rotated about one or more axes of rotation by means of an adjusting device of the heat storage device. The one or more axes of rotation are in particular arranged at least approximately parallel to a main extension direction of a tubular element of the first flow device and/or the second flow device.

The heat storage device can be used in particular as a thermal heat storage and/or heat buffer for industrial applications, for example for the efficient use of waste heat. It is suitable, for example, for use in connection with processes with heat emission and/or heat absorption that vary over time. The heat storage device can be used, for example, as an energy storage in thermal power plants.

• - eine Förderung des ersten und zweiten Wärmeübertragungsmedium zeitlich unabhängig voneinander; und/oder
• - durch einen ruhenden Zustand eines der Wärmeübertragungsmedien kann eine Pumpleistung von Pumpen zur Förderung des ersten und/oder zweiten Wärmeübertragungsmediums reduziert werden; und/oder
• - reduzierte Temperaturdifferenzen zwischen den verschiedenen Medien und dadurch insbesondere reduzierte Effizienzverluste; und/oder
• - konstante Leistungsabgabe bei gleichbleibendem Zustand von erstem und/oder zweitem Wärmeübertragungsmedium.

In addition to or as an alternative to the features and/or advantages mentioned, the heat storage device preferably enables the following:

• - a promotion of the first and second heat transfer medium independently of one another in time; and or
• - due to a stationary state of one of the heat transfer media, a pump output of pumps for conveying the first and / or second heat transfer medium can be reduced; and or
• - reduced temperature differences between the different media and thereby in particular reduced efficiency losses; and or
• - Constant power output with a constant state of the first and/or second heat transfer medium.

Further preferred features and/or advantages of the invention are the subject of the following description and the graphic representation of exemplary embodiments.

• 1 eine schematische Schnittdarstellung einer ersten Ausführungsform einer Wärmespeichervorrichtung, bei welcher eine Speichereinrichtung mittels einer Stelleinrichtung linear bewegbar ist;
• 2 eine schematische systemtechnische Darstellung der Wärmespeichervorrichtung aus 1 in einem Zustand während einer Beladung;
• 3 eine schematische systemtechnische Darstellung der Wärmespeichervorrichtung aus 1 in einem Zustand während einer Entladung;
• 4 eine schematische systemtechnische Darstellung der Wärmespeichervorrichtung aus 1 in einem Zustand während einer direkten Wärmeübertragung zwischen einem ersten und einem zweiten Wärmeübertragungsmedium der Wärmeübertragungseinrichtung;
• 5 eine schematische systemtechnische Darstellung der Wärmespeichervorrichtung aus 1 in einem Zustand wie in 5, wobei zusätzlich eine Wärmeübertragung von dem Speichermedium der Speichereinrichtung auf das zweite Wärmeübertragungsmedium der Wärmeübertragungseinrichtung stattfindet;
• 6 eine schematische Schnittdarstellung einer zweiten Ausführungsform einer Wärmespeichervorrichtung, bei welcher die Speichereinrichtung mittels einer Stelleinrichtung relativ zu der Wärmeübertragungseinrichtung drehbar ist; und
• 7 eine schematische Schnittdarstellung eine dritten Ausführungsform einer Wärmespeichervorrichtung, bei welcher die Speichereinrichtung zwei Aufnahmebehälter umfasst und die Wärmeübertragungseinrichtung zwischen den Aufnahmebehältern angeordnet ist.

Shown in the drawings:

• 1 a schematic sectional view of a first embodiment of a heat storage device, in which a storage device is linearly movable by means of an adjusting device;
• 2 a schematic system-technical representation of the heat storage device 1 in a state during loading;
• 3 a schematic system-technical representation of the heat storage device 1 in a state during a discharge;
• 4 a schematic system-technical representation of the heat storage device 1 in a state during direct heat transfer between a first and a second heat transfer medium of the heat transfer device;
• 5 a schematic system-technical representation of the heat storage device 1 in a condition like in 5 , wherein additional heat transfer takes place from the storage medium of the storage device to the second heat transfer medium of the heat transfer device;
• 6 a schematic sectional view of a second embodiment of a heat storage device, in which the storage device is rotatable relative to the heat transfer device by means of an adjusting device; and
• 7 a schematic sectional view of a third embodiment of a heat storage cher device, in which the storage device comprises two receptacles and the heat transfer device is arranged between the receptacles.

Identical or functionally equivalent elements are provided with the same reference numbers in all figures.

1 shows a first embodiment of a heat storage device 100, designated as a whole by 100. The heat storage device 100 is particularly suitable for applications in the process industry and energy technology.

The heat storage device 100 includes a heat transfer device 102 and a storage device 104.

The heat transfer device 102 preferably serves for direct and/or sensitive heat transfer.

The storage device 102 is preferably used to store and/or transfer latent heat.

Latent heat refers in particular to heat that is released during a first-order phase transition and/or has to be used for a phase transition. In the present case, the storage medium 106 changes from a solid state to a liquid state.

In the 1 The line running obliquely through the storage medium 106 represents the phase boundary between the liquid and the solid phase of the storage medium 106.

In the present case, the storage medium 106 is a phase change material, preferably a nitrate salt or a mixture of different nitrate salts.

For example, a mixture of potassium nitrate and sodium nitrate is particularly suitable as a storage medium 106. Alternatively, a mixture of potassium nitrate, sodium nitrate and lithium nitrate or further mixtures of the salts mentioned or one of the salts mentioned alone can be used as storage medium 106.

The heat transfer device 102 comprises a first flow device 110 and a second flow device 112, which are in particular assigned to or form fluid circuits that are separated from one another in a fluid-effective manner.

The first flow device 110 preferably comprises a tubular element 114 or is designed as a tubular element 114. The tubular element 114 is preferably at least approximately circular in a cross section taken perpendicular to a main extension direction 105 of the tubular element 114.

A first heat transfer medium 118, which is in particular liquid, is preferably received by the tubular element 114 of the first flow device 110. A wall 122 of the first flow device 110 surrounds the first heat transfer medium 118.

For example, water is used as the first heat transfer medium 118 and/or the second heat transfer medium.

The second flow device 112 preferably comprises a tubular element 116 or is designed as a tubular element 116. The tubular element 116 is preferably at least approximately circular in a cross section taken perpendicular to a main extension direction 107 of the tubular element 116.

A second heat transfer medium 120, which in the present case is also liquid, is preferably received by the tube element 116 of the second flow device 112. A wall 124 of the second flow device 112 preferably surrounds the second heat transfer medium 120.

Depending on the use of the heat storage device 100, it can be provided that the first heat transfer medium 118 and/or the second heat transfer medium 120 are each in a flowing or stationary state within the respective pipe elements 114, 116.

The pipe elements 114, 116 of the first flow device 110 and the second flow device 112 are in the present case designed to be at least approximately hollow cylindrical.

The wall 122 of the tubular element 114 of the first flow device 110 and the wall 124 of the tubular element 116 of the second flow device 112 preferably directly adjoin one another.

In the present case, the heat transfer device 102 further comprises a heat-conducting body 126, which surrounds and/or accommodates the first flow device 110 and the second flow device 112 at least in regions.

By means of the heat-conducting body 126, a heat-conducting and/or connection is preferably provided dung formed between the storage device 104 and the flow devices 110, 112.

The heat conducting body 126 is in particular formed from a material with a thermal conductivity of 30 W/(m.K) or more.

The heat-conducting body 126 is preferably a shaped body for receiving the tubular elements 114, 116 of the first and second flow devices 110, 112.

It can be provided that the heat-conducting body 126 has a rib structure, which serves in particular for directed heat conduction and/or heat transfer.

To move the storage device 104 relative to the heat transfer device 102, the heat storage device 100 includes an adjusting device 128.

In addition to moving the storage device 104 relative to the heat transfer device 102, the adjusting device 128 serves in particular to provide a thermal connection of the elements mentioned.

For reduced frictional resistance during movement, the adjusting device 128 preferably comprises an intermediate medium 130, which in particular forms a material boundary between the storage device 104 and the heat transfer device 102.

By means of the intermediate medium 130, the heat transfer device 102 and the storage device 104 are connected to one another in a thermally conductive and/or displaceable manner.

By means of the adjusting device 128, the storage device 104 is mounted displaceably along a direction of movement 134 relative to the heat transfer device 102.

A receptacle 132 of the storage device 104 for holding the storage medium 106 is in the present case designed at least approximately cuboid.

An underside 136 of the receptacle 132, which forms a lower end of the storage device 104 with respect to a direction of gravity G, is preferably in thermal contact with the heat transfer device 102 over its entire surface, in the present case by means of the intermediate medium 130.

It may be advantageous if the receptacle 132 comprises a metallic material, for example steel, or is formed from a metallic material, for example steel.

A wax, for example, is used as the intermediate medium 130.

In order to achieve a constant power output of the heat storage device 100, it may be advantageous if the adjusting device 128 comprises a control and/or regulation device 150.

• - Speichermedium 106 und erstem Wärmeübertragungsmedium 118; und/oder
• - Speichermedium 106 und zweitem Wärmeübertragungsmedium 120; und/oder
• - erstem Wärmeübertragungsmedium 118 und zweitem Wärmeübertragungsmedium 120.

The control and/or regulation device 150 preferably serves to control and/or regulate a constant power output of the heat storage device 100 and/or a targeted control of heat transfer functions between the following media:

• - storage medium 106 and first heat transfer medium 118; and or
• - storage medium 106 and second heat transfer medium 120; and or
• - first heat transfer medium 118 and second heat transfer medium 120.

• - Geschwindigkeit einer Bewegung des Aufnahmebehälters 132;
• - im Falle von mehreren Aufnahmebehältern 132 (vgl. 6 und 7) Geschwindigkeiten der Bewegung und Bewegungsrichtungen der Aufnahmebehälter 132 relativ zueinander;
• - Strömungsgeschwindigkeit des ersten Wärmeübertragungsmediums 118;
• - Strömungsgeschwindigkeit des zweiten Wärmeübertragungsmediums 120;
• - Temperatur des Speichermediums 106;
• - Temperatur des ersten Wärmeübertragungsmediums 118;
• - Temperatur des zweiten Wärmeübertragungsmediums 120.

Preferably, one or more of the following parameters are controlled and/or regulated by means of the control and/or regulating device 150:

• - speed of movement of the receptacle 132;
• - in the case of several receptacles 132 (cf. 6 and 7 ) Speeds of movement and directions of movement of the receptacles 132 relative to one another;
• - flow velocity of the first heat transfer medium 118;
• - flow velocity of the second heat transfer medium 120;
• - Temperature of the storage medium 106;
• - temperature of the first heat transfer medium 118;
• - Temperature of the second heat transfer medium 120.

With a linear movement of the storage device 104 (cf. 1 ), a power output of the heat storage device 100 can preferably be controlled and/or regulated via a feed speed of the storage device 104.

In the 2 until 5 are different operating states of the heat storage device 100 according to in 1 shown first version Form shown schematically. A heat transfer zone 135 is shown in each case.

The heat transfer zone 135 describes a position during a movement of the storage device 104 relative to the heat transfer device 102, in which the storage device 104 is located above the heat transfer device 102 with respect to the direction of gravity G. This essentially corresponds to a top view of the representation 1 .

In 2 a loading of the storage medium 106 is shown without direct use of the available energy. The storage device 104 is moved along the in. by means of the adjusting device 128 1 Direction of movement 134 shown, in particular linear, moves.

For loading, the first, in this case warm, heat transfer medium 118 flows through the tubular element 114 of the first flow device 110.

The second heat transfer medium 120 is stationary in the tubular element 116 of the second flow device 112 stored. It stands essentially motionless in the tubular element 116 of the second flow device 112.

For example, an electrical charge can be provided. For this purpose, the first heat transfer medium 118 is preferably heated by means of one or more heating elements.

When the receptacle 132 of the storage device 104 moves, the area of the storage medium 106, which is preferably directly above the tubular element 114 of the first flow device 1110 with respect to the direction of gravity G, is heated.

The heating is preferably carried out by heat transfer from the first warm heat transfer medium 118 via the heat-conducting structure 126 to the storage medium 106.

For this purpose, the heat-conducting structure 126 is designed to be particularly heat-conducting.

Due to the heat supplied to the storage medium 106, a phase transition of the storage medium 106 from solid to liquid preferably takes place.

The storage medium 106 is melted in particular by the thermal energy which is transferred from the flowing first heat transfer medium 118 to the storage medium 106.

The dotted area of the storage medium 106 in 1 represents liquid storage medium 106, while the storage medium 106 shown in checkered form is still in the solid state.

3 shows a state during a discharge of the storage medium 106 in the heat transfer zone 135, with heat in the form of thermal energy being transferred from the storage medium 106 to the second heat transfer medium 120.

The storage device 104 is preferably discharged against the direction of movement 134 1 emotional.

During the discharge, the first heat transfer medium 118 is preferably stationary and/or essentially non-flowing in the tubular element 114 of the first flow device 110.

The second, in this case cold, heat transfer medium 120 flows through, in particular, the pipe element 116 of the second flow device 112 for discharge.

Heat is preferably transferred from the storage medium 106 to the second heat transfer medium 120. In particular, heat is thereby coupled into the heat transfer device 102.

The storage medium 106 cools down due to the heat transfer.

A phase transition from liquid to solid preferably takes place in an area of the storage medium 106 which is located directly above the pipe element 116 of the second flow device 112 with respect to the direction of gravity G.

Heat transfer to the first heat transfer medium 118 is preferably unnecessary. As a result, a difference between a maximum temperature with which the storage medium 106 is loaded and a maximum temperature of heat released during the discharge can be reduced. This can improve efficiency of the heat storage device.

In 4 is a state of the heat storage device 100 off 1 shown in the heat transfer zone 135, in which a heat transfer function between the first flow device 110 and the second flow device 112 is used.

Here, the first cold heat transfer medium 118 flows through the tubular element 114 of the first flow device 110 and the second warm heat transfer medium 120 flows through the tubular element 116 of the second flow device 112.

In order to form a heat transfer between the first heat transfer medium 118 and the second heat transfer medium 120, the position of the storage device 104 relative to the heat transfer device 102 remains essentially unchanged in the present case.

An in 5 The state of the heat storage device 100 shown differs essentially from that in 4 shown state that in addition to the heat transfer between the heat transfer media 118, 120, heat transfer also takes place from the storage medium 106 to the second heat transfer medium 120.

For this purpose, the receptacle 132 with the storage medium 106 is opposite to the direction of movement 134 1 moved (cf. also 3 ).

Incidentally, the in is correct 5 State shown with the in 4 The condition shown corresponds, so that reference is made to its description.

One in 6 The second embodiment of a heat storage device 100 shown differs in terms of structure and function essentially from that in 1 illustrated first embodiment of a heat storage device 100, that the receptacle 132 can be rotated and/or rotated about an axis of rotation 140 relative to the heat transfer device 102 by means of the adjusting device 128.

In 6 1 shows a state during loading in which the storage medium 106 changes from a solid state to a liquid state and/or is melted by the supply of heat from the first heat transfer medium 118.

On an inner circumference of the receptacle 132, storage medium 106 is preferably arranged in a solid state in a discharged state and/or is deposited there (not shown).

The receptacle 132 is preferably at least approximately cylindrical, in particular hollow cylindrical, for example at least approximately hollow circular cylindrical.

A longitudinal central axis of the receptacle 132 is preferably arranged parallel to the main extension directions 105, 107 of the tube elements 114, 116 of the first and/or second flow device 118, 120.

In particular, the longitudinal center axis of the receptacle 132 is parallel to or identical to the axis of rotation 140.

The axis of rotation 140 is in particular aligned at least approximately parallel to the main extension directions 105, 107 of the tube elements 114, 116 of the first flow device 110 and/or second flow device 112.

In the present case, the heat-conducting body 126 forms a receiving device for the receiving container 132 of the storage device 104 and/or holds the receiving container 132 from below.

In particular, an outer surface of the heat-conducting body 126 facing the receptacle 132 forms a support surface for the receptacle 132. The outer surface facing the receptacle 132 is preferably curved and/or trough-shaped and/or trough-shaped.

The outer surface facing the receptacle 132 forms in particular a contact surface 138 of the heat-conducting body 126 to the wall 142 of the receptacle 132. In the present case, the contact is made by means of the intermediate medium 130.

In the present case, the contact surface 138 is approximately 15% or more, in particular approximately 20% or more, of a total geometric surface of the wall 142 of the receptacle 132.

In particular, the contact area 138 is approximately 50% or less, for example approximately 30% or less, of a total geometric surface of the wall 142 of the receptacle 132.

In the present case, walls 122, 124 of the first flow device 110 and/or the second flow device 112 are in thermal contact with a wall 142 of the receiving container 132 of the storage device 104 by means of the intermediate medium 130.

In particular, the walls 122, 124 of the first flow device 110 and the second flow device 112 are in direct material contact with one another.

Alternatively, it can be provided that a region of the heat-conducting body 126 is arranged between each of the elements mentioned.

Incidentally, the in 6 Illustrated second embodiment of a heat storage device 100 in terms of structure and function with that in 1 illustrated first embodiment of a heat storage device 100, so that reference is made to its description.

One in 7 The third embodiment of a heat storage device 100 shown differs in terms of structure and function essentially from that in 6 illustrated second embodiment, that the storage device 104 comprises two receptacles 132 and that the heat transfer device 102 is arranged between the two receptacles 132.

In the present case, the heat-conducting body 126 comprises a first part 144 and a second part 146, both of which are preferably curved and each form a receiving device for one of the receiving containers 132 of the storage device 104.

Storage medium 106 is preferably accommodated in both receptacles 132. The axes of rotation 140 are preferably arranged parallel to one another.

The first part 144 and the second part 146 of the heat-conducting body 126 preferably adjoin one another or are fixed to one another in an area between the receptacles 132 of the storage device 104.

The tubular elements 114, 116 of the first flow device 110 and/or the second flow device 112 are preferably accommodated between the first part 144 and the second part 146 of the heat-conducting body 126.

It can be provided that the first part 144 and the second part 146 are manufactured as separate components and then connected to one another.

Alternatively, the heat-conducting body 126 can also be made in one piece.

In the present case, walls 122, 124 of the first flow device 110 and/or the second flow device 112 adjoin walls 142 of the receptacle 132 on both sides by means of the intermediate medium 130.

The receptacles 132 of the storage device 104 can preferably be rotated in the same direction or in opposite directions by means of the adjusting device 128.

In 7 a rotation of the receptacles in opposite directions is indicated by arrows.

In the in 7 In the third embodiment shown, contact surfaces 138 of the heat-conducting body 126 to the walls 142 of the receptacle are preferably approximately 60% or less, in particular approximately 70% or less, based on a total geometric surface of the respective wall 142 of the receptacle 132.

In particular, the contact surfaces 138 each amount to approximately 40% or more, for example approximately 50% or more, based on the overall geometric surface of the respective wall 142 of the receiving container 132.

The receptacles 132 preferably have the same volume and/or are identical in terms of shape and/or material.

For a uniform discharge, it can be advantageous if one displacer body is arranged in the receiving containers 132.

Incidentally, the in 7 Illustrated second embodiment of a heat storage device 100 in terms of structure and function with that in 6 illustrated second embodiment of a heat storage device 100, so that reference is made to its description.

In addition to the flexibility shown and different states for operating the heat storage device 100 and/or increased efficiency, the heat storage device 100 preferably enables a more compact structure and/or a reduction of thermal losses to an environment of the heat storage device 100.

Reference symbol list

100

Heat storage device

102

Heat transfer device

104

Storage facility

105

Main direction of extension

106

storage medium

107

Main direction of extension

110

first flow device

112

second flow device

114

Pipe element

116

Pipe element

118

first heat transfer medium

120

second heat transfer medium

122

wall

124

wall

126

Heat conducting body

128

Adjusting device

130

Intermediate medium

132

Receptacle container

134

Direction of movement

135

Heat transfer zone

136

bottom

138

Contact surface

140

Axis of rotation

142

wall

144

first part

146

second part

150

Control and/or regulation device

G

Gravity direction

Claims (14)

Heat storage device (100), comprising a storage device (104), which has a storage medium (106) for storing heat, and a heat transfer device (102), through which heat can be supplied to the storage device (104) and/or heat can be removed from it, wherein the heat transfer device (102) has a first flow device (110) and a second flow device (112), each of which is in thermal contact with the storage device (104) and with each other, wherein through the first flow device (110) a first heat transfer medium (118) and A second heat transfer medium (120) can flow through the second flow device (112), the first flow device (110) being fluidically separated from the second flow device (112), characterized in that the storage device (104) is relative by means of an adjusting device (128). can be moved to the heat transfer device (102), and comprises one or more receptacles (132) for receiving and/or guiding storage medium (106), wherein the one or more receptacles (132) are at least approximately cylindrical, in particular at least approximately hollow cylindrical are. Heat storage device (100). Claim 1 , characterized in that the adjusting device (128) comprises an intermediate medium (130), by means of which one or more receiving containers (132) of the storage device (104) for receiving and / or guiding storage medium (106) and the heat transfer device (102), in particular thermally conductive, connected to each other. Heat storage device (100). Claim 1 or Claim 2 , characterized in that the storage device (104) comprises one or more receptacles (132) for receiving and / or guiding storage medium (106), wherein the one or more receptacles (132) by means of the adjusting device (128) by one or more Axes of rotation (140) are rotatable, in particular the one or more axes of rotation (140) being arranged at least approximately parallel to a main direction of extension of a tubular element (114, 116) of the first flow device (110) and / or second flow device (112). Heat storage device (100) according to one of the Claims 1 until 3 , characterized in that the storage device (104) comprises two or more than two receptacles (132) for receiving and / or guiding storage medium (106), wherein the two or more than two receptacles (132) by means of the adjusting device (128) can be rotated about two or more than two axes of rotation (140) arranged at least approximately parallel to one another and at least two of the two or more than two receptacles (132) can be rotated in opposite or identical directions of rotation. Heat storage device (100) according to one of the Claims 1 until 4 , characterized in that the storage device (104) comprises a receptacle (132) for receiving and / or guiding storage medium (106), wherein the receptacle (132) with respect to a direction of gravity (G) above the heat transfer device (102) or to the side of the Heat transfer device (102) is arranged. Heat storage device (100) according to one of the Claims 1 until 5 , characterized in that the storage device (104) comprises a plurality of receptacles (132) for receiving and/or guiding storage medium (106), the heat transfer device (102) in particular which is arranged in the middle between two of the several receptacles (132). Heat storage device (100) according to one of the Claims 1 until 6 , characterized in that the first flow device (110) and the second flow device (112) each comprise, at least in sections, a tubular element (114, 116), in particular the tubular elements (114, 116) of the first and second flow devices (110, 112) with one another and/or are in thermal and/or mechanical contact with one or more walls (142) of one or more receiving containers (132) of the storage device (104). Heat storage device (100) according to one of the Claims 1 until 7 , characterized in that the adjusting device (128) comprises a control and/or regulating device (150) for controlling and/or regulating a quantity of heat provided, in particular by means of the control and/or regulating device (150) a movement of the storage device (104 ) can be regulated relative to the heat transfer device (102) in such a way that the heat storage device (100) has a constant power output. Heat storage device (100) according to one of the Claims 1 until 8th , characterized in that a control and/or regulating device (150) of the adjusting device (128) regulates and/or controls one or more of the following parameters: - Speed, in particular rotational speed, of one or more receptacles (132) of the storage device (104) ; and/or - temperature of the first heat transfer medium (118); and/or - temperature of the second heat transfer medium (120); and/or - temperature of the storage medium (106); and/or - flow velocity of the first heat transfer medium (118); and/or - flow velocity of the second heat transfer medium (120). Heat storage device (100) according to one of the Claims 1 until 9 , characterized in that the heat transfer device (102) comprises a heat-conducting body (126) which thermally and/or mechanically contains at least one flow device (110, 112) and/or at least one receiving container (132) of the storage device (104), in particular by means of an intermediate medium (130), contacted. Heat storage device (100). Claim 10 , characterized in that a contact surface (138) of the heat-conducting body (126), in particular by means of an intermediate medium (130), to a wall (142) of a receptacle (132) of the storage device (104) is approximately 10% or more, in particular approximately. 20% or more, of a total geometric surface of the wall (142) of the receptacle (132). Heat storage device (100) according to one of the Claims 10 or 11 , characterized in that the heat-conducting body (126) forms a receiving device for receiving one or more receiving containers (132) of the storage device (104) and is in particular at least approximately shell-shaped and / or channel-shaped. Method for storing and/or providing heat by means of a heat storage device (100), comprising a storage device (104) and a heat transfer device (102), wherein in the method - the storage device (104) by means of a first heat transfer medium (118) of the heat transfer device (102 ) Heat is supplied or heat is removed from the storage device (104); - heat is supplied to the storage device (104) by means of a second heat transfer medium (120) of the heat transfer device (102) or heat is removed from the storage device (104); - the first heat transfer medium (118) and the second heat transfer medium (120) flow within the heat transfer device (102) through flow devices (110, 112) that are fluidly separated from one another; and - the storage device (104) is moved relative to the heat transfer device (102), characterized in that the storage device (104) comprises one or more receptacles (132) for receiving and/or guiding storage medium (106), the one or the plurality of receptacles (132) are at least approximately cylindrical, in particular at least approximately hollow cylindrical. Procedure according to Claim 13 , characterized in that one or more receptacles (132) of the storage device (104) are rotated about one or more axes of rotation (140) by means of an adjusting device (128) of the heat storage device (100), the one or more axes of rotation (140) being at least approximately parallel to a main extension direction of a tubular element (114) of the first flow device (110) and/or a tubular element (116) of the second flow device (112) are arranged.

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