Heat storage device, power plant and method for operating a heat storage device

Abstract

Heat storage device (100), in particular high-temperature heat storage device (102), wherein the heat storage device (100) comprises the following: a heat storage section (104) comprising a heat storage material (106) for storing latent and / or sensible heat; a storage container (108) for receiving the heat storage section 104); a charging supply line (110) for supplying a gaseous heat transfer medium into the storage container (108) for charging the heat storage device (100) and / or for discharging a gaseous heat transfer medium from the storage container (108) for discharging the heat storage device (100), wherein the loading feed line (110) opens into the storage container (108) at a lower end region (112) of the storage container (108) in the direction of gravity, characterized by that the loading feed line (110) comprises a feed channel section (124) arranged in an interior (116) of the storage container (108), which penetrates the heat storage section (104) at least approximately completely parallel to the direction of gravity, that the feed channel section (124) comprises a feed channel wall (127) which comprises or consists of a ceramic material (154), in particular an oxide ceramic (156), that the storage container (108) comprises a storage container wall (128), and that the loading supply line (110) is connected to the storage container wall (128) outside the storage container (108) in a pressure-resistant manner, wherein the storage container (108) is designed at least approximately rotationally symmetrical to a longitudinal axis (130) of the storage container (108), wherein the loading supply line (110) is arranged concentrically to the longitudinal axis (130) of the storage container (108).

Description

[0001] The present invention relates to a heat storage device, in particular a high-temperature heat storage device.

[0002] Heat storage devices are known, for example, from US 3 624 356 A, US 4 343 989 A and WO 2010 / 060 524 A1.

[0003] The present invention is based on the objective of providing a heat storage device, in particular a high-temperature heat storage device, by means of which latent and / or sensible heat can be stored effectively and which can also be manufactured cost-effectively.

[0004] This problem is solved by a heat storage device, in particular a high-temperature heat storage device with the features of claim 1.

[0005] The heat storage device, in particular the high-temperature heat storage device, preferably comprises the following: a heat storage section which includes a heat storage material for storing latent and / or sensible heat; a storage container to accommodate the heat storage section; a charging supply line for supplying a gaseous heat transfer medium into the storage container for charging the heat storage device and / or for removing a gaseous heat transfer medium from the storage container for discharging the heat storage device, the loading feed line opens into the storage container at a lower end area in the direction of gravity.

[0006] Preferably, the loading feed line opens into the storage container at a lower end in the direction of gravity.

[0007] The storage container preferably defines an interior space.

[0008] The heat storage section preferably forms at least 50%, and in particular at least 70%, of the volume of the interior of the storage container.

[0009] The heat storage section is completely enclosed within the storage container.

[0010] Preferably, the heat storage device is a solid-state regenerator storage device.

[0011] For example, flue gas from a gas or coal-fired power plant and / or compressed air from an adiabatic compressed air energy storage power plant can be supplied to the storage tank of the heat storage device as a gaseous heat transfer medium.

[0012] It can be advantageous if the height of the storage container is greater than the width of the storage container, in particular by a factor of at least 2, preferably by a factor of at least 5.

[0013] The storage tank preferably has a height of at least 20 m, in particular at least 35 m.

[0014] The storage tank preferably has a height of no more than 150 m, in particular a height of no more than 90 m.

[0015] According to the invention, the loading feed line comprises a feed channel section, which is arranged in particular entirely within an interior of the storage container and which penetrates the heat storage section at least approximately completely parallel to the direction of gravity.

[0016] Preferably, gaseous heat transfer medium can be supplied to the storage container at a lower end area in the direction of gravity and guided through the heat storage section to an upper end area of ​​the storage container in the direction of gravity.

[0017] According to the invention, it is further provided that the feed channel section comprises a feed channel wall which comprises or consists of a ceramic material, in particular an oxide ceramic.

[0018] It can be advantageous if the feed channel wall comprises or consists of several bricked and / or stacked shaped bricks.

[0019] The shaped bricks include, in particular, the heat storage material.

[0020] Preferably, at least part of the loading supply line can therefore be constructed simply and cost-effectively from shaped bricks, especially if the loading supply line is pressure-resistant and connected to a storage tank wall outside the storage tank.

[0021] It can be advantageous if the feed channel section includes a thermal insulation device for thermally insulating the charging feed line, in particular the feed channel section of the charging feed line, from the heat storage section.

[0022] The thermal insulation device includes, for example, a thermal insulation layer arranged between the supply channel section and the heat storage section, for example made of glass or mineral wool.

[0023] Furthermore, it can be advantageous if the thermal insulation device includes glass or mineral wool inserted into the openings of the shaped blocks of the supply channel wall.

[0024] Preferably, all openings in the shaped blocks of the supply channel wall are completely sealed using glass or mineral wool.

[0025] According to the invention, it is further provided that the storage container is designed to be at least approximately rotationally symmetrical about a longitudinal axis of the storage container, wherein the loading feed line is arranged concentrically to the longitudinal axis of the storage container.

[0026] In one embodiment of the heat storage device, it is provided that the storage container comprises a storage container wall, wherein the storage container wall is designed in particular for a maximum internal pressure of the storage container of at least 65 bar, in particular of at least 80 bar.

[0027] Preferably, the maximum operating pressure of the heat storage device corresponds to the maximum internal pressure of the storage container.

[0028] The heat storage device is therefore preferably suitable for storing heat in an adiabatic compressed air energy storage power plant.

[0029] The storage tank wall is designed to be particularly pressure-resistant and, in particular, defines an interior space of the storage tank.

[0030] The storage container is preferably a pressure vessel.

[0031] The storage tank can be operated with a maximum internal pressure of at least 65 bar, in particular at least 80 bar.

[0032] The storage tank wall preferably forms a pressure vessel wall.

[0033] It can be advantageous if the storage container, especially the storage container wall, is made of steel and / or reinforced concrete.

[0034] Reinforced concrete includes, in particular, reinforcing steel.

[0035] Furthermore, it can be advantageous if the heat storage device includes a thermal insulation layer which is arranged on a side of the storage container wall facing the interior of the storage container and covers it at least approximately completely.

[0036] According to the invention, it is further provided that the loading feed line is connected to the wall of the storage container in a pressure-resistant manner outside the storage container.

[0037] A pressure-resistant connection between the charging supply line and the storage tank wall is preferably designed for a maximum operating pressure of the heat storage device of at least 65 bar, in particular at least 80 bar.

[0038] It can be advantageous if the loading feed line enters the storage tank through a penetration in the tank wall.

[0039] Preferably, the storage container includes one or more openings in the storage container wall only at its lower end region.

[0040] In particular, the storage tank wall does not include any openings at an upper end area of ​​the storage tank.

[0041] In one embodiment of the heat storage device, it is provided that the heat storage device includes a discharge supply line for supplying a gaseous heat transfer medium into the storage container for discharging the heat storage device and / or for removing a gaseous heat transfer medium from the storage container for charging the heat storage device, wherein the discharge supply line opens into the storage container in a lower end region in the direction of gravity.

[0042] Preferably, the discharge feed line opens into the storage container at a lower end in the direction of gravity.

[0043] The discharge feed line is preferably arranged coaxially with the loading feed line.

[0044] The discharge feed line preferably surrounds the loading feed line concentrically.

[0045] It can be advantageous if the discharge supply line is pressure-resistant and connected to the storage tank wall.

[0046] A pressure-resistant connection between the discharge supply line and the storage tank wall is preferably designed for a maximum operating pressure of the heat storage device of at least 65 bar, in particular at least 80 bar.

[0047] In one embodiment of the heat storage device, it is provided that the heat storage section can be permeated by means of a gaseous heat transfer medium, in particular parallel to the direction of gravity.

[0048] The heat storage section forms, in particular, a heat storage bed of the heat storage device.

[0049] The heat storage section preferably fills the interior of the storage container completely in a radial direction, i.e. perpendicular to the direction of gravity, at least approximately completely.

[0050] The heat storage section is arranged in the axial direction, i.e. in particular parallel to the direction of gravity, at least one, in particular two, opposing end regions of the storage container.

[0051] It can be advantageous if the heat storage section is arranged at a distance in the axial direction from an inner wall of the storage container.

[0052] In one embodiment of the heat storage device, it is provided that by flowing a gaseous heat transfer medium through the heat storage section to charge the heat storage device, heat can be transferred from the gaseous heat transfer medium to the heat storage material of the heat storage section, and / or that by flowing a gaseous heat transfer medium through the heat storage section to discharge the heat storage device, heat can be transferred from the heat storage material of the heat storage section to the gaseous heat transfer medium.

[0053] Heat can be transferred from the gaseous heat transfer medium to the heat storage material of the heat storage section, in particular, if the gaseous heat transfer medium has a higher temperature than the heat storage material of the heat storage section.

[0054] Heat can be transferred from the heat storage material of the heat storage section to the gaseous heat transfer medium, in particular, if the heat storage material of the heat storage section has a higher temperature than the gaseous heat transfer medium.

[0055] In one embodiment of the heat storage device, it is provided that the heat storage material comprises or is formed from a ceramic material, in particular an oxide ceramic.

[0056] The heat storage material is preferably a solid-state heat storage material.

[0057] For the purposes of this description and the attached claims, a solid heat storage material is preferably understood to be a heat storage material that remains solid during the operation of the heat storage device.

[0058] The ceramic material is, for example, chamotte, especially mullite chamotte.

[0059] Alternatively or additionally, the heat storage material preferably comprises a latent heat storage material, in particular a phase change material.

[0060] Heat can preferably be supplied to the heat storage material of the heat storage section from a gaseous heat transfer medium with a temperature of at most approximately 850 °C, in particular at most approximately 600 °C.

[0061] In one embodiment of the heat storage device, it is provided that the heat storage section comprises one or more shaped bricks, wherein the heat storage section consists in particular of several bricked and / or stacked shaped bricks.

[0062] Preferably, several shaped bricks are arranged next to each other perpendicular to the direction of gravity.

[0063] It can also be advantageous if several shaped bricks are arranged one above the other parallel to the direction of gravity.

[0064] The one or more shaped bricks are preferably formed at least partially from the heat storage material.

[0065] It can be advantageous if one or more of the shaped bricks consist entirely of the heat storage material.

[0066] The shaped bricks preferably consist of a ceramic material, in particular an oxide ceramic.

[0067] It can be advantageous if the shaped bricks are bricks, especially clinker bricks.

[0068] The shaped bricks are, for example, clay bricks.

[0069] As an alternative or supplement to shaped bricks, it may be provided that the heat storage section comprises or is formed from a bed of heat storage material.

[0070] The fill material includes, for example, pellets made of heat storage material.

[0071] It can be advantageous if the heat storage section includes the largest possible heat-transferring surface, in particular the largest possible surface area over which gaseous heat transfer medium can flow.

[0072] In one embodiment of the heat storage device, it is provided that one or more shaped bricks each comprise one or more flow channels incorporated into the shaped bricks, which are arranged in particular parallel to each other.

[0073] Preferably, the one or more flow channels completely penetrate the one or more shaped bricks, each parallel to the direction of gravity.

[0074] It can be advantageous if each shaped brick has at least 200, preferably at least 1000, flow channels per m in a cross-section taken perpendicular to the direction of gravity. 2 includes.

[0075] Furthermore, it can be advantageous if the shaped bricks are laid and / or stacked in such a way that the flow channels of shaped bricks arranged parallel to the direction of gravity are axially aligned.

[0076] Preferably, a heat storage section constructed from shaped bricks can thus be completely permeated with a gaseous heat transfer medium parallel to the direction of gravity by means of the axially aligned flow channels of the shaped bricks.

[0077] The shaped bricks are in particular so-called perforated bricks.

[0078] It can be advantageous if the heat storage section has at least 200 flow channels per m in a cross-section taken perpendicular to the direction of gravity. 2 , preferably at least 500 flow channels per m 2 includes.

[0079] The flow channels of the molded bricks and / or the heat storage section comprise, perpendicular to a flow direction of a gaseous heat transfer medium, in particular perpendicular to the direction of gravity, preferably an opening cross-section of at least 0.5 cm². 2 , in particular of at least 1 cm 2 .

[0080] In one embodiment of the heat storage device, it is provided that the heat storage device includes a diverting device arranged in the storage container for diverting gaseous heat transfer medium flowing through the heat storage device.

[0081] By means of the diverting device, in particular the flow direction of gaseous heat transfer medium flowing in the storage container can be changed, in particular at least approximately reversible by 180°.

[0082] The diverting device is arranged in the storage container, particularly at an upper end area.

[0083] It can be advantageous if the storage tank wall includes or forms the diverting device.

[0084] Preferably, the diversion device comprises one or more diversion elements, for example diversion plates and / or diversion pipes.

[0085] The diverting device is in particular arranged and designed such that gaseous heat transfer medium supplied to the interior of the storage container against the direction of gravity via the feed channel section of the loading feed line can flow uniformly through the heat storage section in the direction of gravity.

[0086] The heat storage device according to the invention is preferably suitable for use in a power plant.

[0087] The present invention therefore further relates to a power plant comprising one or more heat storage devices according to the invention.

[0088] The power plant is, for example, a solar power plant, an adiabatic compressed air energy storage power plant, a coal-fired power plant and / or a gas-fired power plant.

[0089] It can be advantageous if the power plant is a steam power plant.

[0090] The heat storage device according to the invention is also suitable for use as a hot blast stove in a blast furnace process.

[0091] The present invention therefore further relates to the use of a heat storage device according to the invention as a hot blast stove in a blast furnace process.

[0092] The present invention also relates to a blast furnace which includes a heat storage device according to the invention.

[0093] The present invention further relates to a method for operating a heat storage device according to the invention.

[0094] The method for operating the heat storage device according to the invention preferably comprises the following: Supplying a gaseous heat transfer medium into the storage container to charge the heat storage device and / or removing a gaseous heat transfer medium from the storage container to discharge the heat storage device.

[0095] Further features and / or advantages of the invention are the subject of the following description and the graphic representation of exemplary embodiments.

[0096] The drawings show: Fig. 1 a schematic representation of a first embodiment of a heat storage device; Fig. 2 a schematic representation of a second embodiment of a heat storage device; Fig. 3 a schematic enlarged representation of detail D in the Fig. 1 and Fig. 2 with a first embodiment of a heat storage section and a charging supply line of the heat storage device; Fig. 4 a schematic enlarged representation of detail D in the Fig. 1 and Fig. 2 with a second embodiment of a heat storage section and a charging supply line of the heat storage device; Fig. 5 a shaped block of the heat storage section made of Fig. 3 and Fig. 4; and Fig. 6 a schematic enlarged representation of detail D from Fig. 1 and Fig. 2 with a third embodiment of a heat storage section and a charging supply line of the heat storage device.

[0097] Identical or functionally equivalent elements are provided with the same reference symbols in all figures.

[0098] Fig. Figure 1 shows an embodiment of a heat storage device designated as a whole by 100. The heat storage device 100 is, in particular, a high-temperature heat storage device 102.

[0099] According to the invention, the heat storage device 100 comprises a heat storage section 104, which includes a heat storage material 106 for storing latent and / or sensible heat.

[0100] According to the invention, the heat storage device 100 further comprises a storage container 108 for receiving the heat storage section 104.

[0101] According to the invention, the heat storage device 100 comprises a charging supply line 110 for supplying a gaseous heat transfer medium into the storage container 108 for charging the heat storage device 100 and / or for removing a gaseous heat transfer medium from the storage container 108 for discharging the heat storage device 100.

[0102] According to the invention, the loading feed line 110 opens into the storage container 108 at a lower end region 112 in the direction of gravity G.

[0103] The loading feed line 110 opens into the storage container, in particular at a lower end 114 of the storage container 108 in the direction of gravity G.

[0104] The storage container 108 preferably defines an interior space 116.

[0105] It can be advantageous if the heat storage section 104 fills or forms at least 50%, in particular at least 70%, of the volume of the interior 116 of the storage container 108.

[0106] As in Fig. As can be clearly seen in Figure 1, the heat storage section 104 is completely enclosed in the storage container 108.

[0107] According to the invention, a gaseous heat transfer medium, for example flue gas from a power plant 118, can be supplied to the heat storage device 100.

[0108] The heat storage device 100 can be supplied with, in particular, flue gas from a gas or coal-fired power plant and / or compressed air from an adiabatic compressed air storage power plant.

[0109] The storage container 108 preferably has a height of 120 and a width of 122.

[0110] It can be advantageous if the height 120 of the storage container 108 is greater than the width 122 of the storage container 108, in particular by a factor of at least 2, preferably by a factor of at least 5.

[0111] The storage tank 108 preferably has a height of at least 20 m, in particular at least 35 m.

[0112] The storage tank 108 preferably has a height of 120 of at most 150 m, in particular of at most 90 m.

[0113] According to the invention, the loading feed line 110 has a feed channel section 124, which is in particular arranged completely in the interior 116 of the storage container 108.

[0114] The feed channel section 124 penetrates the heat storage section 104 parallel to the direction of gravity G, at least approximately completely.

[0115] By means of the feed channel section 124 of the loading feed line 110, gaseous heat transfer medium can preferably be supplied to the lower end region 112 of the storage container 108 in the direction of gravity G and directed through the heat storage section 104 into an upper end region 126 of the storage container 108 in the direction of gravity G.

[0116] According to the invention, the feed channel section 124 comprises a feed channel wall 127.

[0117] According to the invention, the storage container 108 comprises a storage container wall 128.

[0118] According to the invention, the loading feed line 110 is connected to the wall of the storage container 128 outside the storage container 108 in a pressure-resistant manner.

[0119] According to the invention, the storage container 108 is designed to be at least approximately rotationally symmetrical about a longitudinal axis 130 of the storage container 108.

[0120] According to the invention, the loading feed line 110 is arranged concentrically to the longitudinal axis 130 of the storage container 108.

[0121] The storage tank wall 128 is designed in particular for a maximum internal pressure of the storage tank 108 of at least 65 bar, in particular of at least 80 bar.

[0122] Preferably, the maximum operating pressure of the heat storage device 100 corresponds to the maximum internal pressure of the storage container 108.

[0123] It can be advantageous if the maximum internal pressure of the storage container 108 is chosen such that the heat storage device 100 can be used to store heat in an adiabatic compressed air storage power plant.

[0124] The storage tank wall 128 is designed to be particularly pressure-resistant.

[0125] The storage container wall 128 preferably limits the interior 116 of the storage container 108.

[0126] The storage container 108 is preferably a pressure vessel 132.

[0127] The storage vessel wall 128 forms in particular a pressure vessel wall.

[0128] The storage tank 108, in particular the storage tank wall 128, is preferably made of steel and / or reinforced concrete and / or manufactured.

[0129] Reinforced concrete includes, in particular, reinforcing steel.

[0130] It can be advantageous if the heat storage device 100 includes a thermal insulation layer 134, which is arranged on a side of the storage container wall 128 facing the interior 116 of the storage container 108.

[0131] The loading feed line 110 is preferably pressure-resistant and connected to the wall of the storage container 128 outside the storage container 108.

[0132] A pressure-resistant connection between the charging supply line 110 and the storage tank wall 128 is preferably designed for a maximum operating pressure of the heat storage device 100 of at least 65 bar, in particular of at least 80 bar.

[0133] It can be advantageous if the loading feed line 110 opens into the storage container 108 at a penetration 136 at the lower end area 112 in the direction of gravity.

[0134] The storage container 108 preferably comprises one or more openings 136 only at its lower end region 112 in the direction of gravity G.

[0135] The storage tank wall 128 preferably has no openings 136 at the upper end region 126 in the direction of gravity G.

[0136] The heat storage device 100 preferably comprises a discharge supply line 138 for supplying a gaseous heat transfer medium into the storage container 108 for discharging the heat storage device 100 and / or for removing a gaseous heat transfer medium from the storage container 108 for charging the heat storage device 100.

[0137] The discharge feed line 138 preferably also opens into the storage container 108 at the lower end region 112 of the storage container 108 in the direction of gravity.

[0138] It can be advantageous if the discharge feed line 138 also opens into the storage container at the lower end 114 in the direction of gravity.

[0139] Preferably, the discharge feed line 138 is arranged coaxially to the loading feed line 110, in particular coaxially to the longitudinal axis 130 of the storage container 108.

[0140] It can be advantageous if the discharge supply line 138 is also pressure-resistant and connected to the storage tank wall 128.

[0141] A pressure-resistant connection between the discharge supply line 138 and the storage tank wall 128 is preferably designed for a maximum operating pressure of the heat storage device of at least 65 bar, in particular at least 80 bar.

[0142] The heat storage section 104 of the heat storage device 100 is preferably permeable by means of a gaseous heat transfer medium, in particular parallel to the direction of gravity G.

[0143] The heat storage section 104 forms in particular a heat storage bed 140 of the heat storage device 100.

[0144] The heat storage section 104 fills the interior 116 of the storage container 108 in a radial direction, that is, perpendicular to the direction of gravity G and / or to the longitudinal axis 130, preferably at least approximately completely.

[0145] The heat storage section 104 is arranged in the axial direction, i.e. parallel to the direction of gravity G and / or to the longitudinal axis 130, preferably spaced apart from the two opposite end regions 112, 126 of the storage container 108.

[0146] It can be particularly advantageous if the heat storage section 104 is arranged axially spaced from an inner wall 142 of the storage container.

[0147] The in Fig. The heat storage device 100 shown in 1 preferably comprises a diverting device 144 arranged in the storage container 108 for diverting heat transfer medium flowing through the heat storage device 100.

[0148] By means of the diverting device, in particular the flow direction of gaseous heat transfer medium flowing in the storage container 108 can be changed, in particular at least approximately reversible by 180°.

[0149] The diverting device 144 is arranged in particular at the upper end region 126 of the storage container 108 in the direction of gravity G in the storage container 108.

[0150] Preferably the storage container wall 128 comprises or forms the diverting device 144.

[0151] The diversion device 144 preferably comprises one or more diversion elements 146, for example diversion plates and / or diversion pipes.

[0152] The diverting device 144 is in particular arranged and designed such that gaseous heat transfer medium supplied to the interior 116 of the storage container 108 against the direction of gravity G by means of the feed channel section 124 of the loading feed line 110 is directed in the direction of the Fig. 1 shown arrows 148 can be diverted and can flow uniformly through the heat storage section 104 in the direction of gravity G.

[0153] The in Fig. The heat storage device 100 shown in Figure 2 differs from the one in Figure 2. Fig. The heat storage device 100 shown in Figure 1 is essentially characterized by the fact that the discharge supply line 138 is located in the heat storage device shown in Figure 1. Fig. The heat storage device 100 shown in 2 does not open into the storage container 108 at the lower end 114 in the direction of gravity G.

[0154] The discharge feed line 138 terminates at the Fig. 2 heat storage device 100 shown preferably radially, that is perpendicular to the direction of gravity G and / or to the longitudinal axis 130 of the storage container 108, into the storage container 108.

[0155] The storage tank 108 or the storage tank wall 128 includes one or more additional openings 136 for this purpose.

[0156] Incidentally, that's true in Fig. 2 second embodiment of the heat storage device 100 shown with regard to structure and function with the one in Fig. The first embodiment shown in 1 is identical, so reference is made to its preceding description.

[0157] Fig. Figure 3 shows an embodiment of a feed channel wall 127, a feed channel section 124, a charging feed line 110, and a heat storage section 104 in an enlarged view according to detail D of the heat storage device 100. Fig. 1 and Fig. 2.

[0158] The heat storage material 106 of the in Fig. The heat storage section 104 shown in Figure 3 is in particular a solid heat storage material 150.

[0159] The heat storage device 100 is preferably a solid-state regenerator storage device 152.

[0160] The heat storage material 106 preferably comprises a ceramic material 154, in particular an oxide ceramic 156, or is formed therefrom.

[0161] The ceramic material 154 is, for example, fireclay 158, in particular mullite fireclay 160.

[0162] The in Fig. The heat storage section 104 of the heat storage device 100 shown in Figure 3 preferably comprises several shaped bricks 162.

[0163] The heat storage section 104 consists in particular of several brick-built shaped bricks 162.

[0164] In particular, several shaped stones 162 are arranged next to each other perpendicular to the direction of gravity G, and several shaped stones 162 are arranged one above the other parallel to the direction of gravity G.

[0165] The shaped bricks 162 are preferably formed at least partially from the heat storage material 106, in particular completely.

[0166] Preferably the shaped bricks are 162 bricks, in particular so-called perforated bricks.

[0167] The molded bricks 162 preferably each comprise several flow channels 164 incorporated into the molded bricks 162, which are in particular arranged parallel to each other.

[0168] Preferably, the flow channels 164 penetrate the molded bricks 162 completely parallel to the direction of gravity G and thus form, in particular, passage openings 166 in the molded bricks.

[0169] Preferably, each shaped brick 162 comprises at least 200, preferably at least 500, flow channels per m in a cross-section taken perpendicular to the direction of gravity G. 2 .

[0170] The shaped bricks 162 are in particular constructed in such a way that the flow channels 164 of shaped bricks 162 arranged one above the other parallel to the direction of gravity G are axially aligned, so that a heat storage section 104 constructed of shaped bricks 162 can preferably be completely permeated by a gaseous heat transfer medium parallel to the direction of gravity G.

[0171] Preferably, the heat storage section 104 also comprises at least 200 flow channels, preferably at least 500 flow channels, per m in a cross-section taken perpendicular to the direction of gravity G. 2 .

[0172] The flow channels 164 of the shaped bricks 162 and / or the heat storage section 104 comprise, perpendicular to a flow direction, in particular to the direction of gravity G, preferably an opening cross-section 168 of at least 0.5 cm² 2 , in particular of at least 1 cm 2 (cf. Fig. 5).

[0173] Preferably, the feed channel wall 127 also comprises several brick-built shaped bricks 162.

[0174] The feed channel wall 127 is particularly bounded by several brick-built shaped bricks 162.

[0175] Preferably, at least part of the charging supply line 110, which is arranged inside the storage container 108 of the heat storage device 100, can be constructed simply and cost-effectively from shaped bricks 162.

[0176] The in Fig. The second embodiment of the feed channel wall 127 and the heat storage section 104 shown in Figure 4 differs from the one in Figure 4. Fig. 3 first embodiment shown essentially in that the feed channel section 124 comprises a thermal insulation device 170 for thermal insulation of the charging feed line 110 from the heat storage section 104.

[0177] The thermal insulation device 170 comprises, for example, a thermal insulation layer arranged between the supply channel section 124 and the heat storage section 104, for example made of glass or mineral wool.

[0178] It can be advantageous if the thermal insulation device is 170, as in Fig. Figure 4 shows that the glass or mineral wool is inserted into the passage openings 166 of the molded blocks 162 of the feed channel wall 127, by means of which preferably all passage openings in the molded blocks 162 of the feed channel wall 127 are completely closed.

[0179] Incidentally, that's true in Fig. 4 second embodiment of the feed channel wall 127 and the heat storage section 104 shown with regard to structure and function with the one in Fig. The first embodiment shown in section 3 is identical, so reference is made to its description in this respect.

[0180] Fig. Figure 6 shows a third embodiment of the feed channel wall 127 and the heat storage section 104 of the heat storage device 100.

[0181] The in Fig. The third embodiment shown in section 6 differs from those described in the Fig. 3 and Fig. The first and second embodiments shown in 4 are essentially distinguished by the fact that the heat storage section 104 comprises a bed 172 of heat storage material 106, in particular of pellets 174.

[0182] The heat storage material 104 is preferably a latent heat storage material 176, in particular a phase change material 178.

[0183] The feed channel wall 127 can in turn be constructed from several shaped bricks 162, which, however, do not necessarily have to have flow channels 164.

[0184] The in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig.The 6 heat storage devices shown preferably function as follows: A gaseous heat transfer medium can be supplied to the storage container 108 via the charging supply line 110 for the purpose of charging the heat storage device 100.

[0185] The heat storage section 104 is permeable with the gaseous heat transfer medium for charging the heat storage device 100, whereby heat can be transferred from the gaseous heat transfer medium to the heat storage material 106 of the heat storage section 104.

[0186] Cooled heat transfer medium can be discharged via the discharge supply line 138 when the heat storage device is being charged.

[0187] To discharge the heat storage device, gaseous heat transfer medium can be supplied to the storage container 108 of the heat storage device via the discharge supply line 138, whereby heat can be transferred from the heat storage material 106 of the heat storage section 104 to the gaseous heat transfer medium by flowing through the heat storage section 104 with the gaseous heat transfer medium to discharge the heat storage device 100, which in turn can be discharged from the storage container 108 of the heat storage device 100 via the charging supply line 110.

[0188] Overall, a heat storage device 100 can be provided, by means of which heat can be stored simply and reliably and which is particularly cost-effective to manufacture. Reference symbol list 100 Heat storage device 102 High-temperature heat storage device 104 Heat storage section 106 Heat storage material 108 storage tanks 110 Loading feed line 112 lower end range 114 lower end 116 Interior 118 Power Plant 120 height 122 width 124 Feed channel section 126 upper end range 127 Feed channel wall 128 Storage tank wall 130 Longitudinal axis 132 pressure vessels 134 thermal insulation layer 136 Breakthrough 138 Discharge feed line 140 heat storage bed 142 Inner wall 144 Diversion device 146 Diversion element 148 Arrow 150 solid heat storage material 152 Solid-state regenerator storage device 154 ceramic material 156 Oxide ceramics 158 fireclay 160 mullite chamotte 162 Formstein 164 Flow channel 166 Passage opening 168 Opening cross-section 170 thermal insulation device 172 screed 174 pellets 176 Latent heat storage material 178 Phase change material G Direction of gravity

Claims

[1] Heat storage device (100), in particular high-temperature heat storage device (102), wherein the heat storage device (100) comprises: a heat storage section (104) comprising a heat storage material (106) for storing latent and / or sensible heat; a storage container (108) for receiving the heat storage section 104); a charging supply line (110) for supplying a gaseous heat transfer medium into the storage container (108) for charging the heat storage device (100) and / or for discharging a gaseous heat transfer medium from the storage container (108) for discharging the heat storage device (100), wherein the loading feed line (110) opens into the storage container (108) at a lower end region (112) of the storage container (108) in the direction of gravity, characterized by , that the loading feed line (110) comprises a feed channel section (124) arranged in an interior (116) of the storage container (108), which penetrates the heat storage section (104) at least approximately completely parallel to the direction of gravity, that the feed channel section (124) comprises a feed channel wall (127) which comprises or consists of a ceramic material (154), in particular an oxide ceramic (156), that the storage container (108) comprises a storage container wall (128), and that the loading supply line (110) is connected to the storage container wall (128) outside the storage container (108) in a pressure-resistant manner, wherein the storage container (108) is designed at least approximately rotationally symmetrical to a longitudinal axis (130) of the storage container (108), wherein the loading supply line (110) is arranged concentrically to the longitudinal axis (130) of the storage container (108). [2] Heat storage device (100) according to claim 1, characterized by , that the storage vessel wall (128) is designed for a maximum internal pressure of the storage vessel (108) of at least 65 bar, in particular of at least 80 bar. [3] Heat storage device (100) according to one of claims 1 to 2, characterized by , that the heat storage device (100) comprises a discharge supply line (138) for supplying a gaseous heat transfer medium into the storage container (108) for discharging the heat storage device (100) and / or for removing a gaseous heat transfer medium from the storage container (108) for charging the heat storage device (100), wherein the discharge supply line (138) opens into the storage container (108) in a lower end region (112) in the direction of gravity. [4] Heat storage device (100) according to one of claims 1 to 3, characterized by, that the heat storage section (104) can be permeated by means of a gaseous heat transfer medium, in particular parallel to the direction of gravity. [5] Heat storage device (100) according to any one of claims 1 to 4, characterized by , that by flowing a gaseous heat transfer medium through the heat storage section (104) to charge the heat storage device (100) heat can be transferred from the gaseous heat transfer medium to the heat storage material (106) of the heat storage section and / or that by flowing a gaseous heat transfer medium through the heat storage section (104) to discharge the heat storage device (100) heat can be transferred from the heat storage material (106) of the heat storage section (104) to the gaseous heat transfer medium. [6] Heat storage device (100) according to any one of claims 1 to 5, characterized bythat the heat storage material (106) comprises or is formed from a ceramic material (154), in particular an oxide ceramic (156). [7] Heat storage device (100) according to any one of claims 1 to 6, characterized by , that the heat storage section (104) comprises one or more shaped bricks (162), wherein the heat storage section (104) consists in particular of several bricked and / or stacked shaped bricks (162). [8] Heat storage device (100) according to claim 7, characterized by that the one or more molded bricks (162) each comprise one or more flow channels (164) incorporated into the molded bricks (162), which are in particular arranged parallel to each other. [9] Heat storage device (100) according to any one of claims 1 to 8, characterized by, that the heat storage device (100) comprises a diverting device (144) arranged in the storage container (108) for diverting gaseous heat transfer medium flowing through the heat storage device (100). [10] Power plant (118) comprising one or more heat storage devices (100) according to any one of claims 1 to 9. [11] Method for operating a heat storage device (100) according to any one of claims 1 to 9, wherein the method comprises: Supplying a gaseous heat transfer medium into the storage container (108) to charge the heat storage device (100) and / or removing a gaseous heat transfer medium from the storage container (108) to discharge the heat storage device (100).

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