DE102019207965A1 - Heat storage device and method for storing and / or providing heat - Google Patents

Abstract

In order to provide a heat storage device that is easy to manufacture and can be loaded or unloaded with high efficiency, it is proposed that a heat transfer device of the heat storage device have a first flow device and a second flow device, each in thermal contact with a storage device of the heat storage device and / or with one another stand, wherein 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 being fluidically separated from the second flow device and the storage device being movable relative to the heat transfer device by means of an actuating device.

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 one another. 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 also relates to a method for storing and / or providing heat by means of a heat storage device.

Heat transfer devices are from the WO 2011/069693 A1 , the DE 10 2009 006 788 A1 , the DE 20 2010 015 920 U1 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 at the outset, which is easy to manufacture and can be charged or discharged with high efficiency.

This object is achieved according to the invention in the heat storage device mentioned at the beginning in that the storage device can be moved relative to the heat transfer device by means of an actuating device.

The first flow device and the second flow device are each in thermal contact with the storage device. Thus, heat can be transferred 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.

In the following, “warm” and “cold” are preferably used as relative terms. A heat transfer takes place in particular from the warm to the cold medium.

In order to supply heat to the heat storage device, a warm first heat transfer medium flows through the first flow device, for example, which transfers its heat to the storage medium via the heat transfer device. In particular, the storage medium is melted.

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

The phase change medium comprises 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. A melting point of the phase change medium can be set, for example, by means of 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 emits its stored heat via the heat transfer device. The storage medium preferably solidifies in the process.

In addition or as an alternative, 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 implemented.

A heat transfer function between the different media can preferably be used when the respective medium - that is, 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. The storage medium can be moved by means of the actuating 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.

In this way, for example, a first warm heat transfer medium can flow through the first flow device and a second cold heat transfer medium through the second flow device at the same time. 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 is to be understood in particular as meaning that the first flow device and the second flow device are separated from one another in a fluid-effective manner.

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

The first and second heat transfer media can 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. Thus, a heat transfer from the first heat transfer medium to the second heat transfer medium or vice versa can preferably be formed.

As a result of the movement of the storage device by means of the actuating device relative to the heat transfer device, further parameters are preferably present which can be used to optimize the 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 actuating 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 in particular arranged perpendicular to a main direction of extent of a tubular element of the first flow device.

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

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

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

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

The actuating device preferably comprises an intermediate medium by means of which one or more receptacles of the storage device for receiving and / or guiding the storage medium and the heat transfer device are connected to one another.

The one or more receiving containers 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 the 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 favorable 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 preferably comprises one or more receiving containers for receiving and / or guiding storage medium. The one or more receiving containers are preferably at least approximately cylindrical, in particular at least approximately hollow cylindrical. This is particularly advantageous when the respective receptacle is rotated.

For example, the one or more receiving containers are at least approximately in the form of a hollow circular cylinder.

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 actuating device. In particular, each of the receiving containers can be rotated about an axis of rotation, the axes of rotation preferably being arranged at least approximately parallel to one another.

It can be favorable if the one or more axes of rotation of the one or more receiving containers are arranged at least approximately parallel to a main direction of extent of a pipe 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 receiving containers, these are preferably designed essentially identically with regard to shape, material and / or volume. In this way, a homogeneous heat transfer can be established over the entire storage device.

Alternatively, it can be provided that different receptacles are used. In this way, a selective heat transfer can be established even with several receiving containers.

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 receiving containers can be rotated in opposite or identical directions of rotation.

As a result, a power output of the heat storage device can be set and / or regulated as a whole.

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

In the case of two receptacles, it can be advantageous for a displacement body to be arranged in each of the receptacles. The displacement bodies are preferably used, in particular in the event of a discharge, to make 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 pipe elements of the first and second flow devices are in particular 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.

One or more of the following elements preferably comprise or are formed from a metallic material, for example steel: the pipe elements of the first and / or second flow devices, the wall (s) of the one or more receiving containers.

The storage medium and the first heat transfer medium and / or the storage medium and the second heat transfer medium are preferably thermally coupled.

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

The actuating device preferably 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 specification “constant power output” relates in particular to a 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 regulates and / or controls preferably one or more of the following parameters:

• - Speed of one or more receptacles 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 regulating device controls and / or regulates a direction of movement of the plurality of receptacles, for example a direction of rotation, relative to one another.

In particular, temperature differences between 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 regulating device is in particular a mechanical control and / or regulating device.

It can be provided that the heat transfer device comprises at least one electrical heating element which can be selectively charged 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 electrically charged.

The heat transfer device comprises, in particular, a heat conducting body which makes thermal and / or mechanical contact with at least one flow device and / or at least one receptacle of the storage device, in particular by means of an intermediate medium.

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

The heat conducting body preferably encloses the second flow device along a main direction of extent of a tubular element of the second flow device.

It can be favorable if the heat conducting body is formed from a material which has a thermal conductivity of approx. 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 heat conducting body comprises a thermally conductive polymer material or is formed therefrom.

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 about 10% or more, in particular about 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 approx. 70% or less, in particular approx. 50% or less, of a total geometric surface of the wall of the receptacle.

It can be favorable if the heat conducting body forms a receiving device for receiving a receiving container of the storage device 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 case of the method, the storage device is provided with a first Heat transfer medium of the heat transfer device heat supplied or heat removed from the storage device.

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

The first heat transfer medium and the second heat transfer medium flow within the heat transfer device through fluidically separated flow devices. 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.

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

The heat storage device can in particular be used as a thermal heat store 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 store in thermal power stations.

• - 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 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
• a pumping capacity of pumps for conveying the first and / or second heat transfer medium can be reduced by a resting state of one of the heat transfer media; and or
• - Reduced temperature differences between the various media and thereby in particular reduced efficiency losses; and or
• - constant power output with 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.

In the drawings show:

• 1 a schematic sectional illustration of a first embodiment of a heat storage device, in which a storage device can be moved linearly by means of an actuating 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 discharge;
• 4th 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 state like in 5 , wherein there is additionally a heat transfer from the storage medium of the storage device to the second heat transfer medium of the heat transfer device;
• 6th a schematic sectional illustration 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 actuating device; and
• 7th a schematic sectional view of a third embodiment of a heat storage device, in which the storage device comprises two receiving containers and the heat transfer device is arranged between the receiving containers.

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

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

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

The heat transfer device 102 is preferably used for direct and / or sensible heat transfer.

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

Latent heat particularly refers to heat which is released during a phase transition of the first order and / or which has to be used for a phase transition. In the present case, the storage medium works 106 from a solid state to a liquid state.

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

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

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

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

From the pipe element 114 the first flow device 110 is preferably a first heat transfer medium 118 added, which is particularly liquid. A wall surrounds it 122 the first flow device 110 the first heat transfer medium 118 .

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

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

From the pipe element 116 the second flow device 112 is preferably a second heat transfer medium 120 recorded, which in the present case is also liquid. One wall 124 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 each in a flowing or in a stationary state within the respective pipe elements 114 , 116 exist.

The pipe elements 114 , 116 the first flow device 110 and the second flow device 112 are in the present case at least approximately in the form of a hollow cylinder.

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

The heat transfer device 102 In the present case furthermore comprises a heat conducting body 126 , which is the first flow device 110 and the second flow device 112 at least partially surrounds and / or receives.

By means of the heat conducting body 126 is preferably a thermally conductive and / or connection between the storage device 104 and the flow devices 110 , 112 educated.

The heat conductor 126 is formed in particular from a material with a thermal conductivity of 30 W / (mK) or more.

The heat conducting body is preferably 126 a molded body for receiving the pipe elements 114 , 116 the first and second flow devices 110 , 112 .

It can be provided that the heat conducting body 126 has a rib structure which is used in particular for directional heat conduction and / or heat transfer.

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

The control device 128 serves in addition to a movement of the storage device 104 relative to the heat transfer device 102 in particular a thermal connection of the elements mentioned.

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

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

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

A receptacle 132 the storage device 104 to accommodate the storage medium 106 is at least approximately cuboid in the present case.

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

It can be advantageous if the receiving container 132 comprises a metallic material, for example steel, or is formed from a metallic material, for example steel.

As an intermediate medium 130 a wax is used, for example.

To form a constant power output of the heat storage device 100 it can be beneficial if the actuator 128 a control and / or regulating device 150 includes.

• - 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 regulating device 150 is preferably used 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
• - the 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, by means of the control and / or regulating device 150 one or more of the following parameters controlled and / or regulated:

• - Speed of movement of the receptacle 132 ;
• - in the case of several receptacles 132 (see. 6th and 7th ) Speeds of movement and directions of movement of the receptacles 132 relative to each other;
• - Flow rate of the first heat transfer medium 118 ;
• - Flow rate 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 (see. 1 ) is a power output of the heat storage device 100 preferably via a feed rate of the storage device 104 controllable and / or adjustable.

In the 2 to 5 are different operating states of the heat storage device 100 according to the in 1 illustrated first embodiment shown schematically. There is always a heat transfer zone 135 shown.

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 with respect to the direction of gravity G above the heat transfer device 102 is located. This essentially corresponds to a plan view of the illustration from FIG 1 .

In 2 is a loading of the storage medium 106 shown without a direct use of the available energy. The storage device 104 is done by means of the adjusting device 128 along the in 1 indicated direction of movement 134 , especially linearly, moves.

The first, in the present case warm, heat transfer medium flows for loading 118 through the pipe element 114 the first flow device 110 .

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

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

When moving the receptacle 132 the storage device 104 becomes the area of the storage medium 106 which is related to the direction of gravity G preferably directly above the pipe element 114 the first flow device 1110 is located, heated.

The heating is preferably carried out by heat transfer from the first warm heat transfer medium 118 about the heat conduction structure 126 on the storage medium 106 .

This is what the heat conduction structure is for 126 in particular designed to be thermally conductive.

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

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

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

3 shows a state during discharge of the storage medium 106 in the heat transfer zone 135 taking heat in the form of thermal energy from the storage medium 106 on the second heat transfer medium 120 is transmitted.

The storage device 104 is used to discharge, preferably against the direction of movement 134 out 1 emotional.

The first heat transfer medium is at a standstill during discharge 118 preferably stationary and / or essentially non-flowing in the tubular element 114 the first flow device 110 .

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

It preferably gets heat from the storage medium 106 on the second heat transfer medium 120 transfer. As a result, there is in particular heat in the heat transfer device 102 coupled.

The storage medium 106 cools down through the heat transfer.

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

A heat transfer to the first heat transfer medium 118 is preferably dispensable. This allows a difference between a maximum temperature at which the storage medium 106 is charged, and a maximum temperature of the heat given off during the discharge can be reduced. This can improve an efficiency of the heat storage device.

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

The first cold heat transfer medium flows through this 118 the pipe element 114 the first flow device 110 and the second warm heat transfer medium 120 flows through the pipe element 116 the second flow device 112 .

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

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

The receptacle 132 with the storage medium 106 this is against the direction of movement 134 out 1 moved (cf. also 3 ).

Incidentally, the in 5 state shown with the in 4th state shown, so that reference is made to the description thereof.

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

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

On an inner circumference of the receptacle 132 is preferably the storage medium in a discharged state 106 arranged in a solid state and / or 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 parallel to the main directions of extent 105 , 107 the pipe elements 114 , 116 the first and / or second flow device 118 , 120 arranged.

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

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

The heat conductor 126 in the present case forms a receiving device for the receiving container 132 the storage device 104 and / or holds the receptacle 132 from underneath.

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

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

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

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

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

In particular, the walls 122 , 124 the first flow device 110 and the second flow device 112 in direct material contact with each other.

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

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

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

The heat conductor 126 presently comprises a first part 144 and a second part 146 , both of which are preferably arched and each have a receiving device for one of the receiving containers 132 the storage device 104 form.

In both receptacles 132 is preferably a storage medium 106 recorded. 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 limit in an area between the receptacles 132 the storage device 104 preferably to one another or are fixed to one another.

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

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 also be made in one piece and / or will be.

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

The receptacles 132 the storage device 104 are by means of the actuating device 128 preferably rotatable in the same direction or in opposite directions.

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

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

In particular, the contact areas are 138 in each case approx. 40% or more, for example approx. 50% or more, based on the total geometric surface of the respective wall 142 of the receptacle 132 .

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

For an even discharge it can be advantageous if a displacement body is in each case in the receptacles 132 is arranged.

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

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

List of reference symbols

100

Heat storage device

102

Heat transfer device

104

Storage facility

105

Main direction of extent

106

Storage medium

107

Main direction of extent

110

first flow device

112

second flow device

114

Tubular element

116

Tubular 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

Receiving container

134

Direction of movement

135

Heat transfer zone

136

bottom

138

Contact area

140

Axis of rotation

142

Wall

144

first part

146

second part

150

Control and / or regulating device

G

Direction of gravity

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was 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.

Patent literature cited

• WO 2011/069693 A1 [0003]
• DE 102009006788 A1 [0003]
• DE 202010015920 U1 [0003]
• DE 102017213718 A1 [0003]

Claims (15)

A 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 / or with one another, wherein the first flow device (110) provides a first heat transfer medium (118 ) and through the second flow device (112) a second heat transfer medium (120) can flow, wherein the first flow device (110) is fluidically separated from the second flow device (112), characterized in that the storage device (104) by means of an actuating device (128 ) is movable relative to the heat transfer device (102). Heat storage device (100) according to Claim 1 , characterized in that the actuating 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 the storage medium (106) and the heat transfer device (102), in particular thermally conductive, connected to each other. Heat storage device (100) according to Claim 1 or 2 , characterized in that the storage device (104) comprises one or more receptacles (132) for receiving and / or guiding storage medium (106), the one or more receptacles (132) being at least approximately cylindrical, in particular at least approximately hollow cylindrical are. Heat storage device (100) according to one of the Claims 1 to 3 , 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 actuating 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 extent of a pipe 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 to 4th , characterized in that the storage device (104) comprises two or more than two receiving containers (132) for receiving and / or guiding storage medium (106), wherein the two or more than two receiving containers (132) by means of the adjusting device (128) are rotatable about two or more than two axes of rotation (140) arranged at least approximately parallel to one another and wherein at least two of the two or more than two receiving containers (132) are rotatable in opposite or identical directions of rotation. Heat storage device (100) according to one of the Claims 1 to 5 , characterized in that the storage device (104) comprises a receptacle (132) for receiving and / or guiding storage medium (106), wherein the receptacle (132) is above the heat transfer device (102) or to the side with respect to a direction of gravity (G) Heat transfer device (102) is arranged. Heat storage device (100) according to one of the Claims 1 to 6th , 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) being arranged in particular in the center between two of the plurality of receptacles (132). Heat storage device (100) according to one of the Claims 1 to 7th , characterized in that the first flow device (110) and the second flow device (112) each at least partially comprise a pipe element (114, 116), in particular the pipe 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 to 8th , characterized in that the actuating device (128) comprises a control and / or regulating device (150) for controlling and / or regulating an amount of heat provided, wherein 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 to 9 , characterized in that a control and / or The regulating device (150) of the actuating device (128) regulates and / or controls one or more of the following parameters: speed, in particular rotational speed, of one or more receiving containers (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 rate of the first heat transfer medium (118); and / or - flow rate of the second heat transfer medium (120). Heat storage device (100) according to one of the Claims 1 to 10 , characterized in that the heat transfer device (102) comprises a heat conducting body (126), which at least one flow device (110, 112) and / or at least one receiving container (132) of the storage device (104) thermally and / or mechanically, in particular by means of an intermediate medium (130), contacted. Heat storage device (100) according to Claim 11 , 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 receiving container (132) of the storage device (104) is approx. 10% or more, in particular approx. 20% or more of a total geometric surface area of the wall (142) of the receiving container (132). Heat storage device (100) according to one of the Claims 11 or 12 , 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 in particular is at least approximately shell-shaped and / or channel-shaped. A 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 - Heat is supplied to the storage device (104) by means of a first heat transfer medium (118) of the heat transfer device (102) 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 fluidically separated flow devices (110, 112); and - The storage device (104) is moved relative to the heat transfer device (102). Procedure according to Claim 14 , characterized in that one or more receptacles (132) of the storage device (104) are rotated around 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) at least are arranged approximately parallel to a main direction of extent of a pipe element (114) of the first flow device (110) and / or a pipe element (116) of the second flow device (112).

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