US20170051984A1 - Method For Producing A Latent Heat Storage Device - Google Patents
Method For Producing A Latent Heat Storage Device Download PDFInfo
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- US20170051984A1 US20170051984A1 US15/308,447 US201515308447A US2017051984A1 US 20170051984 A1 US20170051984 A1 US 20170051984A1 US 201515308447 A US201515308447 A US 201515308447A US 2017051984 A1 US2017051984 A1 US 2017051984A1
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- Prior art keywords
- phase
- change material
- filled
- latent heat
- heat storage
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/023—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material being enclosed in granular particles or dispersed in a porous, fibrous or cellular structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
- B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
- B21D39/023—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors using rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
- B65D7/42—Details of metal walls
- B65D7/44—Reinforcing or strengthening parts or members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D2020/0004—Particular heat storage apparatus
- F28D2020/0021—Particular heat storage apparatus the heat storage material being enclosed in loose or stacked elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/12—Fastening; Joining by methods involving deformation of the elements
- F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Definitions
- the invention relates to a method for producing a latent heat storage device.
- latent heat storage devices that comprise a phase-change material are used as thermal energy storage devices.
- latent heat storage devices have the advantage that they store thermal energy (heat) in a hidden and low-loss manner with multiple repeated cycles over a relatively long time.
- Production methods for latent heat storage devices can use jackets which accommodate the phase-change material of the latent heat storage device. Such a jacket is useful in particular in the liquid state of the phase-change material. Typically, coatings and/or polymers are used for the jacket.
- the prior art production methods for latent heat storage devices in particular methods that coat and/or deposit a polymer onto the phase-change materials, are typically technically complex and cost-intensive. Consequently, they reduce the utility value of the thermal energy stored in the latent heat storage device. In particular for temperatures above 100° C. (373.15 K) known jackets, or known latent heat storage devices, cannot be used.
- One embodiment provides a method for producing a latent heat storage device, wherein a phase-change material in the liquid or solid state is introduced into a can body, and wherein the can body filled with the solid or liquid phase-change material is closed in a fluid-tight manner by seam rolling.
- the solid phase-change material and the can body are heated prior to filling, and wherein the heated can body is filled with the phase-change material that has been liquefied by heating.
- the seam rolling is performed after solidification of the introduced liquefied phase-change material.
- the can body is filled with a powdery phase-change material.
- the can body is filled with a pelletized and/or molded phase-change material.
- the can body is filled with a pelletized and/or molded phase-change material having a form fit with the can body.
- the introduced phase-change material and/or the filled can body is/are heated prior to seam rolling, wherein said heating liquefies the introduced phase-change material.
- the liquefied, introduced phase-change material and/or the filled can body are cooled prior to seam rolling, the liquefied, introduced phase-change material being re-solidified by said cooling.
- the phase-change material comprises at least one organic and/or inorganic salt.
- a can bottom and/or a can lid are joined to the can body by seam rolling.
- a cylindrical can body has an aspect ratio of greater than one.
- a latent heat storage device comprising a can body with a phase-change material arranged within the can body, wherein the can body is closed in a fluid-tight manner by seam rolling.
- a cylindrical can body wherein a can bottom and/or a can lid are secured to the cylindrical can body by seam rolling.
- the cylindrical can body has rolled grooves.
- the can body has a chemically inert coating on an inner side facing the phase-change material.
- FIG. 1 shows an example can-type latent heat storage device, according to one embodiment
- FIG. 2 shows an example seam-rolled closure of the latent heat storage device, according to one embodiment.
- Embodiments of the present invention are provided to improve the production of a latent heat storage device.
- a can body is filled with a phase-change material in the liquid or solid state.
- the can body filled with the solid or liquid phase-change material is closed in a fluid-tight manner by seam rolling.
- the method permits a technically efficient and cost-effective encapsulation of a phase-change material and consequently a technically efficient and cost-effective production of a latent heat storage device.
- the phase-change material is canned in the liquid or solid state, as is common for drinks or food cans.
- the closed can body therefore forms a can.
- Encapsulation of the phase-change material is effected according to the invention by seam rolling.
- encapsulation of the phase-change material by seam rolling uses a cost-effective and technically proven method for the production of a latent heat storage device.
- the latent heat storage device is closed in a fluid-tight manner, that is to say liquid-tight and gas-tight.
- Tempered steel and/or aluminum sheets can for example be provided as materials for the can body. Preference is given to a metallic can body since it has good and adequate thermal and mechanical stability and strength, and good heat conductivity.
- the latent heat storage device comprises at least one can body with a phase-change material arranged within the can body, the can body being closed in a fluid-tight manner by seam rolling.
- phase-change material is encapsulated in a can or tin can.
- advantages are similar and equivalent to those of the above-mentioned method according to the invention.
- the solid phase-change material and the can body are heated prior to filling and the heated can body is filled with the phase-change material that has been liquefied by heating.
- the phase-change material may advantageously be liquefied or melted prior to filling of the can body, and is used in the liquid state to fill the previously heated can body. Heating the can body advantageously ensures that the phase-change material does not immediately solidify or freeze when introduced into the can body.
- Filling of the can body with the liquefied phase-change material is intended to be performed using a funnel, wherein the phase-change material can be heated in the funnel. Once the phase-change material is almost completely liquefied, the phase-change material is introduced into the previously heated can body via an opening of the tunnel.
- the temperature of the can body and of the liquefied phase-change material should be approximately equal. Overall, this may permit particularly cost-effective and technically efficient filling of the can body.
- the seam rolling is performed after solidification of the introduced liquefied phase-change material.
- phase-change material may ensure that the can body is close to entirely filled with the phase-change material.
- the specified process can be repeated until the solidified introduced phase-change material takes up close to all of the internal volume of the can body. This advantageously permits a particularly efficient latent heat storage device.
- the can body is filled with a powdery phase-change material.
- the can body is filled with a phase-change material in powder form.
- a phase-change material in powder form. This may permit particularly simple filling of the can body.
- it is provided to re-heat the powdery phase-change material prior to closure of the can body by seam rolling. This avoid—as much as possible—inclusions of air within the closed can body.
- the geometric shape of the phase-change material matches the geometric shape of the internal volume of the can body such that the pelletized and/or molded phase-change material fits in a form-fitting manner inside the can body.
- the phase-change material is for example in the form of a tablet, that is to say a compressed tablet. Filling of the can body is then carried out by arranging the tablet-like phase-change material in the can body. The tablet-like phase-change material therefore seals the interior of the can body in a form-fitting manner, so as to avoid interspaces and therefore air inclusions inside the closed can body (can).
- the tablet-like phase-change material matches an internal geometry of the interior of the can body in terms of its geometric shape.
- phase-change material When filling the can body using a powdery phase-change material or using a pelletized and/or molded phase-change material, it may be advantageous to heat the introduced phase-change material and/or the filled can body prior to seam rolling, wherein said heating liquefies the introduced phase-change material.
- the powdery or pelletized and/or molded phase-change material is first inserted into the can body and is then liquefied by direct heating of the phase-change material and/or by indirect heating via the can body. It may be advantageously ensured that the available internal volume of the can body is close to entirely filled with the introduced phase-change material. Also, air inclusions are avoided as far as possible.
- the volume of the phase-change material usually reduces, since interspaces or air inclusions, that form due to the powdery structure of the phase-change material, are reduced or almost entirely eliminated by liquefaction of the phase-change material. This frees up additional internal volume in the can body, which can for example be filled with additional phase-change material.
- the liquefied, introduced phase-change material and/or the filled can body are cooled prior to seam rolling, the liquefied, introduced phase-change material being re-solidified or frozen by said cooling.
- phase-change materials that comprise at least one organic and/or inorganic salt.
- Advantageous inorganic salts are for example metal nitrates, metal nitrites, metal chlorides and/or metal hydroxides.
- Intended organic salts are in particular metal acetates, for example sodium or potassium acetates. These salts may be particularly advantageous as phase-change materials for temperatures above 100° C.
- phase-change material arranged in the can body prior to seam rolling. This may improve the heat capacity of the latent heat storage device.
- the can body is joined to a can bottom and/or to a can lid by seam rolling.
- the can body forms, in conjunction with the can bottom and/or the can lid, a can.
- This may achieve a particularly technically efficient and cost-effective method for producing a latent heat storage device.
- the can bottom and/or the can lid are joined to the can body in a fluid-tight manner by seam rolling, for example as in the case of a drinks can or food can. It is expedient to join the can bottom to the can body in a fluid-tight manner prior to filling of the can body. It is possible to provide other joining methods for the can lid or the can bottom. It is in particular possible to provide a can body that already comprises a can bottom. In that context, only the can lid is joined to the can body by seam rolling.
- the can body has an aspect ratio of greater than one.
- the aspect ratio is defined as the ratio of the maximum extent of the can body to the minimum extent of the can body.
- a cylindrical can body whose maximum extent is its diameter (can body diameter) and whose minimum extent is its height (can body height).
- an aspect ratio significantly greater than one in particular greater than five.
- the can body or the can (closed can body) forms a flattened cylinder.
- the aspect ratio of greater than one improves the transfer of heat to the phase-change material arranged in the can body. This facilitates take-up and shedding of heat by the latent heat storage device.
- the cylindrical can body has rolled grooves.
- the rolled grooves may improve the mechanical stability of the cylindrical can body.
- the rolled grooves run in parallel and encircle the cylindrical can body.
- the can body has a chemically inert coating on an inner side facing the phase-change material.
- the inside of the can body has an anti-corrosion coating such that salt-containing phase-change materials, in particular in the liquid state, do not lead to corrosion of the can body, in particular of a metal can body.
- An anti-corrosion (i.e. chemically inert) coating is also provided for the can lid and/or the can bottom.
- FIG. 1 shows a latent heat storage device 1 that comprises a can body 2 .
- the closed can body 2 forms a can 2 .
- the can body 2 is joined in a fluid-tight manner to a can lid 4 by means of a closure 42 formed by seam rolling.
- a can bottom (not shown) is also joined to the can body 2 by seam rolling.
- a phase-change material (not shown) is arranged inside the can body 2 .
- the can body 2 is for example made of sheet steel or sheet aluminium and has an aspect ratio of greater than one.
- Other sheets or materials for the can body 2 are provided, in particular materials that are chemically resistant to salt-containing phase-change materials, in particular in the liquid state of the phase-change material.
- rolled grooves 12 are arranged on the outside of the can body 2 in order to increase the mechanical stability of the cylindrical can body 2 .
- the rolled grooves 12 encircle the cylindrical can body 2 .
- the can lid 4 also has rolled grooves 12 which are circular and are arranged concentric with one another.
- the can body 2 has an aspect ratio of greater than one. This may improves the transfer of heat from the can body 2 to the phase-change material arranged inside the can body 2 .
- the aspect ratio is understood here as the ratio of the can body diameter 100 to the can body height 102 .
- Of particular advantage is an aspect ratio of greater than five, in particular of greater than ten. It is also possible to provide rod-shaped (i.e. long and thin) cylinder shapes for the can body.
- FIG. 2 shows a section view of a closure 42 between a can body 2 and a can lid 4 .
- the closure 42 is formed by seam rolling.
- the can body 2 and the can lid 4 are folded or shaped and intertwined with one another so as to produce a fluid-tight connection 42 between the can body 2 and the can lid 4 .
- the closure 42 forms a double seam as may be found in drinks cans or food cans.
- the can body 2 and the can lid 4 each have, after folding or after seam rolling, a hook-shaped end, said two hook-shaped ends engaging in one another. It is in particular possible, in this context, for a form-fitting connection to be provided for the closure 42 .
- a phase-change material 10 is arranged on the inside 6 of the can body 2 .
- the can formed by the can body 2 , the can lid 4 and a can bottom is filled with the phase-change material 10 .
- the can body 2 can have rolled grooves for improving mechanical stability.
- the latent heat storage device according to the invention is in particular intended for temperatures above 100° C.
Abstract
A method for producing a latent heat accumulator may include filling a can body with a phase-change material in the liquid or solid aggregate state, and closing the can body filled with said solid or liquid phase-change material by flanging such that fluid cannot pass through.
Description
- This application is a U.S. National Stage Application of International Application No. PCT/EP2015/058397 filed Apr. 17, 2015, which designates the United States of America, and claims priority to DE Application No. 10 2014 208 555.1 filed May 7, 2014, the contents of which are hereby incorporated by reference in their entirety.
- The invention relates to a method for producing a latent heat storage device.
- According to the prior art, latent heat storage devices that comprise a phase-change material are used as thermal energy storage devices. In this context, latent heat storage devices have the advantage that they store thermal energy (heat) in a hidden and low-loss manner with multiple repeated cycles over a relatively long time.
- Production methods for latent heat storage devices can use jackets which accommodate the phase-change material of the latent heat storage device. Such a jacket is useful in particular in the liquid state of the phase-change material. Typically, coatings and/or polymers are used for the jacket. The prior art production methods for latent heat storage devices, in particular methods that coat and/or deposit a polymer onto the phase-change materials, are typically technically complex and cost-intensive. Consequently, they reduce the utility value of the thermal energy stored in the latent heat storage device. In particular for temperatures above 100° C. (373.15 K) known jackets, or known latent heat storage devices, cannot be used.
- One embodiment provides a method for producing a latent heat storage device, wherein a phase-change material in the liquid or solid state is introduced into a can body, and wherein the can body filled with the solid or liquid phase-change material is closed in a fluid-tight manner by seam rolling.
- In one embodiment, the solid phase-change material and the can body are heated prior to filling, and wherein the heated can body is filled with the phase-change material that has been liquefied by heating.
- In one embodiment, the seam rolling is performed after solidification of the introduced liquefied phase-change material.
- In one embodiment, the can body is filled with a powdery phase-change material.
- In one embodiment, the can body is filled with a pelletized and/or molded phase-change material.
- In one embodiment, the can body is filled with a pelletized and/or molded phase-change material having a form fit with the can body.
- In one embodiment, the introduced phase-change material and/or the filled can body is/are heated prior to seam rolling, wherein said heating liquefies the introduced phase-change material.
- In one embodiment, the liquefied, introduced phase-change material and/or the filled can body are cooled prior to seam rolling, the liquefied, introduced phase-change material being re-solidified by said cooling.
- In one embodiment, the phase-change material comprises at least one organic and/or inorganic salt.
- In one embodiment, a can bottom and/or a can lid are joined to the can body by seam rolling.
- In one embodiment, a cylindrical can body has an aspect ratio of greater than one.
- Another embodiment provides a latent heat storage device, comprising a can body with a phase-change material arranged within the can body, wherein the can body is closed in a fluid-tight manner by seam rolling.
- In one embodiment, a cylindrical can body, wherein a can bottom and/or a can lid are secured to the cylindrical can body by seam rolling.
- In one embodiment, the cylindrical can body has rolled grooves.
- In one embodiment, the can body has a chemically inert coating on an inner side facing the phase-change material.
- Example aspects and embodiment of the invention are described below with reference to the drawings, in which:
-
FIG. 1 shows an example can-type latent heat storage device, according to one embodiment; and -
FIG. 2 shows an example seam-rolled closure of the latent heat storage device, according to one embodiment. - Embodiments of the present invention are provided to improve the production of a latent heat storage device.
- In the method according to the invention for producing a latent heat storage device, a can body is filled with a phase-change material in the liquid or solid state. In addition, in the method according to the invention, the can body filled with the solid or liquid phase-change material is closed in a fluid-tight manner by seam rolling.
- According to the invention, the method permits a technically efficient and cost-effective encapsulation of a phase-change material and consequently a technically efficient and cost-effective production of a latent heat storage device.
- In other words, the phase-change material is canned in the liquid or solid state, as is common for drinks or food cans. The closed can body therefore forms a can. Encapsulation of the phase-change material is effected according to the invention by seam rolling. Advantageously, encapsulation of the phase-change material by seam rolling, according to the invention, uses a cost-effective and technically proven method for the production of a latent heat storage device. According to the invention, the latent heat storage device is closed in a fluid-tight manner, that is to say liquid-tight and gas-tight. By canning the phase-change material, according to the invention, it is possible to use the latent heat storage device according to the invention even at temperatures above 100° C. (373.15 K).
- Tempered steel and/or aluminum sheets can for example be provided as materials for the can body. Preference is given to a metallic can body since it has good and adequate thermal and mechanical stability and strength, and good heat conductivity.
- The latent heat storage device according to the invention comprises at least one can body with a phase-change material arranged within the can body, the can body being closed in a fluid-tight manner by seam rolling.
- In other words, the phase-change material is encapsulated in a can or tin can. The advantages are similar and equivalent to those of the above-mentioned method according to the invention.
- According to one embodiment of the invention, the solid phase-change material and the can body are heated prior to filling and the heated can body is filled with the phase-change material that has been liquefied by heating.
- In other words, the phase-change material may advantageously be liquefied or melted prior to filling of the can body, and is used in the liquid state to fill the previously heated can body. Heating the can body advantageously ensures that the phase-change material does not immediately solidify or freeze when introduced into the can body.
- Filling of the can body with the liquefied phase-change material is intended to be performed using a funnel, wherein the phase-change material can be heated in the funnel. Once the phase-change material is almost completely liquefied, the phase-change material is introduced into the previously heated can body via an opening of the tunnel. In this context, the temperature of the can body and of the liquefied phase-change material should be approximately equal. Overall, this may permit particularly cost-effective and technically efficient filling of the can body.
- In one embodiment of the invention, the seam rolling is performed after solidification of the introduced liquefied phase-change material.
- This may ensure that the can body is close to entirely filled with the phase-change material. The specified process can be repeated until the solidified introduced phase-change material takes up close to all of the internal volume of the can body. This advantageously permits a particularly efficient latent heat storage device.
- According to one embodiment of the invention, the can body is filled with a powdery phase-change material.
- In other words, the can body is filled with a phase-change material in powder form. This may permit particularly simple filling of the can body. In this context, it is provided to re-heat the powdery phase-change material prior to closure of the can body by seam rolling. This avoid—as much as possible—inclusions of air within the closed can body.
- It may be advantageous to fill the can body with a pelletized and/or molded phase-change material having a form fit.
- In other words, the geometric shape of the phase-change material matches the geometric shape of the internal volume of the can body such that the pelletized and/or molded phase-change material fits in a form-fitting manner inside the can body. In this context, the phase-change material is for example in the form of a tablet, that is to say a compressed tablet. Filling of the can body is then carried out by arranging the tablet-like phase-change material in the can body. The tablet-like phase-change material therefore seals the interior of the can body in a form-fitting manner, so as to avoid interspaces and therefore air inclusions inside the closed can body (can). In other words, the tablet-like phase-change material matches an internal geometry of the interior of the can body in terms of its geometric shape.
- When filling the can body using a powdery phase-change material or using a pelletized and/or molded phase-change material, it may be advantageous to heat the introduced phase-change material and/or the filled can body prior to seam rolling, wherein said heating liquefies the introduced phase-change material.
- In other words, the powdery or pelletized and/or molded phase-change material is first inserted into the can body and is then liquefied by direct heating of the phase-change material and/or by indirect heating via the can body. It may be advantageously ensured that the available internal volume of the can body is close to entirely filled with the introduced phase-change material. Also, air inclusions are avoided as far as possible.
- In particular, when the liquefied powdery or granular phase-change material solidifies or freezes inside the can body, the volume of the phase-change material usually reduces, since interspaces or air inclusions, that form due to the powdery structure of the phase-change material, are reduced or almost entirely eliminated by liquefaction of the phase-change material. This frees up additional internal volume in the can body, which can for example be filled with additional phase-change material.
- According to one embodiment of the invention, the liquefied, introduced phase-change material and/or the filled can body are cooled prior to seam rolling, the liquefied, introduced phase-change material being re-solidified or frozen by said cooling.
- Expediently, this brings the latent heat storage device into a state that is appropriate for further treatment of the latent heat storage device. This can involve repeated heating and cooling.
- Of particular preference are phase-change materials that comprise at least one organic and/or inorganic salt. Advantageous inorganic salts are for example metal nitrates, metal nitrites, metal chlorides and/or metal hydroxides. Intended organic salts are in particular metal acetates, for example sodium or potassium acetates. These salts may be particularly advantageous as phase-change materials for temperatures above 100° C.
- Furthermore, it is provided to compress the phase-change material arranged in the can body prior to seam rolling. This may improve the heat capacity of the latent heat storage device.
- According to one embodiment of the invention, the can body is joined to a can bottom and/or to a can lid by seam rolling.
- In other words, the can body forms, in conjunction with the can bottom and/or the can lid, a can. This may achieve a particularly technically efficient and cost-effective method for producing a latent heat storage device. In this context, the can bottom and/or the can lid are joined to the can body in a fluid-tight manner by seam rolling, for example as in the case of a drinks can or food can. It is expedient to join the can bottom to the can body in a fluid-tight manner prior to filling of the can body. It is possible to provide other joining methods for the can lid or the can bottom. It is in particular possible to provide a can body that already comprises a can bottom. In that context, only the can lid is joined to the can body by seam rolling.
- In some embodiments the can body has an aspect ratio of greater than one.
- Here, the aspect ratio is defined as the ratio of the maximum extent of the can body to the minimum extent of the can body.
- Preference is given to a cylindrical can body whose maximum extent is its diameter (can body diameter) and whose minimum extent is its height (can body height). In this context, particular provision is made of an aspect ratio significantly greater than one, in particular greater than five. In other words, the can body or the can (closed can body) forms a flattened cylinder. The aspect ratio of greater than one improves the transfer of heat to the phase-change material arranged in the can body. This facilitates take-up and shedding of heat by the latent heat storage device.
- According to one embodiment of the invention, the cylindrical can body has rolled grooves.
- The rolled grooves may improve the mechanical stability of the cylindrical can body. In particular, the rolled grooves run in parallel and encircle the cylindrical can body.
- In one embodiment of the invention, the can body has a chemically inert coating on an inner side facing the phase-change material.
- In other words, the inside of the can body has an anti-corrosion coating such that salt-containing phase-change materials, in particular in the liquid state, do not lead to corrosion of the can body, in particular of a metal can body. An anti-corrosion (i.e. chemically inert) coating is also provided for the can lid and/or the can bottom.
-
FIG. 1 shows a latentheat storage device 1 that comprises acan body 2. In this context, theclosed can body 2 forms acan 2. Thecan body 2 is joined in a fluid-tight manner to a can lid 4 by means of aclosure 42 formed by seam rolling. A can bottom (not shown) is also joined to thecan body 2 by seam rolling. - A phase-change material (not shown) is arranged inside the
can body 2. Thecan body 2 is for example made of sheet steel or sheet aluminium and has an aspect ratio of greater than one. Other sheets or materials for thecan body 2 are provided, in particular materials that are chemically resistant to salt-containing phase-change materials, in particular in the liquid state of the phase-change material. - Furthermore, rolled
grooves 12 are arranged on the outside of thecan body 2 in order to increase the mechanical stability of thecylindrical can body 2. In this context, the rolledgrooves 12 encircle thecylindrical can body 2. The can lid 4 also has rolledgrooves 12 which are circular and are arranged concentric with one another. - The
can body 2 has an aspect ratio of greater than one. This may improves the transfer of heat from thecan body 2 to the phase-change material arranged inside thecan body 2. The aspect ratio is understood here as the ratio of thecan body diameter 100 to thecan body height 102. Of particular advantage is an aspect ratio of greater than five, in particular of greater than ten. It is also possible to provide rod-shaped (i.e. long and thin) cylinder shapes for the can body. -
FIG. 2 shows a section view of aclosure 42 between acan body 2 and a can lid 4. Here, theclosure 42 is formed by seam rolling. Thecan body 2 and the can lid 4 are folded or shaped and intertwined with one another so as to produce a fluid-tight connection 42 between thecan body 2 and the can lid 4. In other words, theclosure 42 forms a double seam as may be found in drinks cans or food cans. To that end, thecan body 2 and the can lid 4 each have, after folding or after seam rolling, a hook-shaped end, said two hook-shaped ends engaging in one another. It is in particular possible, in this context, for a form-fitting connection to be provided for theclosure 42. - A phase-
change material 10 is arranged on the inside 6 of thecan body 2. In other words, the can formed by thecan body 2, the can lid 4 and a can bottom is filled with the phase-change material 10. On an outside 8, thecan body 2 can have rolled grooves for improving mechanical stability. The latent heat storage device according to the invention is in particular intended for temperatures above 100° C. - Thus, what is achieved is a latent heat storage device that is cost-effective to produce and has both high mechanical stability and high thermal stability.
- Although the invention has been described and illustrated in detail by way of the preferred exemplary embodiments, the invention is not restricted by the disclosed examples and other variations can be derived here from by a person skilled in the art without departing from the scope of protection of the invention.
Claims (15)
1. A method for producing a latent heat storage device, the method comprising:
at least partially filling a can body with phase-change material in a liquid or solid state, and
performing a seam rolling to close the can body filled with the solid or liquid phase-change material in a fluid-tight manner.
2. The method of claim 1 , comprising:
heating the solid phase-change material and the can body prior to filling the can body, wherein the solid phase-change material is liquefied by the heating, and
wherein at least partially filling the can body with the phase-change material comprises at least partially filling the heated can body with the liquefied phase-change material.
3. The method as claimed in claim 2 , comprising performing the seam rolling after the liquefied phase-change material solidifies in the can body.
4. The method as claimed in claim 1 , wherein the can body is filled with a powdery phase-change material.
5. The method as claimed in claim 1 , wherein the can body is filled with at least one of a pelletized phase-change material or a molded phase-change material.
6. The method as claimed in claim 5 , wherein the can body is filled with at least one of a pelletized phase-change material or a molded phase-change material having a form fit with the can body.
7. The method as claimed in claim 4 , comprising heating at least one of the phase-change material filled in the can body or the filled can body prior to the seam rolling, wherein said heating liquefies the introduced phase-change material filled in the can body.
8. The method as claimed in claim 7 , comprising cooling at least one of the liquefied phase-change material filled in the can body or the filled can body prior to the seam rolling, wherein the liquefied phase-change material in the can body is re-solidified by said cooling.
9. The method as claimed in claim 1 , wherein the phase-change material comprises at least one salt or inorganic salt.
10. The method as claimed in claim 1 , comprising joining at least one of a can bottom or a can lid to the can body by seam rolling.
11. The method as claimed in claim 10 , wherein the can body is a cylindrical can body having an aspect ratio of greater than one.
12. A latent heat storage device, comprising:
a can body having a phase-change material arranged in the can body,
wherein the can body is closed in a fluid-tight manner by seam rolling.
13. The latent heat storage device of claim 12 , wherein the can body is cylindrical can body, and wherein at least one of a can bottom or a can lid is secured to the cylindrical can body by seam rolling.
14. The latent heat storage device of claim 13 , wherein the cylindrical can body has rolled grooves.
15. The latent heat storage device of claim 12 , wherein the can body has a chemically inert coating on an inner side facing the phase-change material.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014208555.1A DE102014208555A1 (en) | 2014-05-07 | 2014-05-07 | Process for producing a latent heat storage |
DE102014208555.1 | 2014-05-07 | ||
PCT/EP2015/058397 WO2015169567A1 (en) | 2014-05-07 | 2015-04-17 | Method for producing a latent heat accumulator |
Publications (1)
Publication Number | Publication Date |
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US20170051984A1 true US20170051984A1 (en) | 2017-02-23 |
Family
ID=53039389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/308,447 Abandoned US20170051984A1 (en) | 2014-05-07 | 2015-04-17 | Method For Producing A Latent Heat Storage Device |
Country Status (6)
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US (1) | US20170051984A1 (en) |
EP (1) | EP3116797A1 (en) |
KR (1) | KR20170005836A (en) |
CN (1) | CN106233087A (en) |
DE (1) | DE102014208555A1 (en) |
WO (1) | WO2015169567A1 (en) |
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EP3594458A1 (en) | 2018-07-09 | 2020-01-15 | Siemens Aktiengesellschaft | Apparatus and method for storing or provision of a vapour |
DE102018213063A1 (en) | 2018-08-03 | 2020-02-06 | Siemens Aktiengesellschaft | Device and method for storing steam |
DE102018213064A1 (en) * | 2018-08-03 | 2020-02-06 | Siemens Aktiengesellschaft | Device and method for storing steam from a steam cycle |
CN111137893B (en) * | 2019-11-21 | 2021-10-15 | 靖州县华荣活性炭有限责任公司 | Regenerator is used in active carbon production |
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US7910241B2 (en) * | 2004-09-22 | 2011-03-22 | Nissan Motor Co., Ltd. | Battery outer case for receiving a flat battery pack joined by seam-rolling |
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EP0031523A1 (en) * | 1979-12-28 | 1981-07-08 | Impama Anstalt | Heating element, particularly for preserve tins |
DE19745794A1 (en) * | 1996-10-18 | 1998-04-23 | Franz Hegele | Latent heat reservoir for building heating |
US20130221013A1 (en) * | 1997-04-07 | 2013-08-29 | J. Bruce Kolowich | Thermal receptacle with phase change material |
SE516196C2 (en) * | 2000-05-31 | 2001-12-03 | Pallet Coller Kb | Methods of producing delineation of refrigerated storage compartments and similarly intended wall or panel device and device made according to the method |
CN2629478Y (en) * | 2003-06-18 | 2004-08-04 | 武汉市利源能源开发有限公司 | Phase-changeable energy-storage constant-temp. moudel |
DE102009034654A1 (en) * | 2009-07-24 | 2011-01-27 | J. Eberspächer GmbH & Co. KG | Latent heat storage and associated production process |
AT508992B1 (en) * | 2009-11-11 | 2011-08-15 | Ziegler Klausdieter | PHASE CHANGE |
FR2954296B3 (en) * | 2009-12-23 | 2011-12-23 | Impress Group Bv | METAL CONSERVATION BOX FOR A FOOD PRODUCT |
AT509335B1 (en) * | 2010-04-06 | 2011-08-15 | Ziegler Klausdieter | BATHING HEATING STORAGE WITH AIR CONDITIONING BODIES |
DE102010061753A1 (en) * | 2010-11-23 | 2012-05-24 | Robert Bosch Gmbh | Exhaust gas treatment system for nitrogen oxide reduction for exhaust gas of internal combustion engine, has feeder tank, supply module and dosing module which is provided for introducing reduction medium to exhaust tract |
DE102011083499A1 (en) * | 2011-09-27 | 2013-03-28 | Siemens Aktiengesellschaft | Heat storage device for parabolic trough power plant, has storage tank including inner volume through which heat transfer medium flows, and pipe filled with medium, arranged in tank and including inner wall with anti-corrosion coating |
DE202013102378U1 (en) * | 2013-06-03 | 2013-06-18 | Constantin Porsack | Device for storing and tempering food and drinks |
-
2014
- 2014-05-07 DE DE102014208555.1A patent/DE102014208555A1/en not_active Withdrawn
-
2015
- 2015-04-17 KR KR1020167034219A patent/KR20170005836A/en not_active Application Discontinuation
- 2015-04-17 WO PCT/EP2015/058397 patent/WO2015169567A1/en active Application Filing
- 2015-04-17 CN CN201580020570.XA patent/CN106233087A/en active Pending
- 2015-04-17 EP EP15719642.9A patent/EP3116797A1/en not_active Withdrawn
- 2015-04-17 US US15/308,447 patent/US20170051984A1/en not_active Abandoned
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Publication number | Priority date | Publication date | Assignee | Title |
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US3743782A (en) * | 1969-11-04 | 1973-07-03 | Laing Nikolaus | Storage container for night storage air heater |
US4341262A (en) * | 1980-05-05 | 1982-07-27 | Alspaugh Thomas R | Energy storage system and method |
US20040084658A1 (en) * | 2002-10-28 | 2004-05-06 | Oswin Ottinger | Material mixtures for heat storage systems and production method |
US7910241B2 (en) * | 2004-09-22 | 2011-03-22 | Nissan Motor Co., Ltd. | Battery outer case for receiving a flat battery pack joined by seam-rolling |
Also Published As
Publication number | Publication date |
---|---|
CN106233087A (en) | 2016-12-14 |
KR20170005836A (en) | 2017-01-16 |
WO2015169567A1 (en) | 2015-11-12 |
EP3116797A1 (en) | 2017-01-18 |
DE102014208555A1 (en) | 2015-11-12 |
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