EP3670027A1 - Wärmeaufnahmevorrichtung - Google Patents

Wärmeaufnahmevorrichtung Download PDF

Info

Publication number
EP3670027A1
EP3670027A1 EP18382964.7A EP18382964A EP3670027A1 EP 3670027 A1 EP3670027 A1 EP 3670027A1 EP 18382964 A EP18382964 A EP 18382964A EP 3670027 A1 EP3670027 A1 EP 3670027A1
Authority
EP
European Patent Office
Prior art keywords
energy
heat
capturing
tubes
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18382964.7A
Other languages
English (en)
French (fr)
Inventor
Susana LÓPEZ PÉREZ
Jesus Febres Pascual
Eduardo Ubieta Astigarraga
Itzal DEL HOYO ARCE
Jon Iturralde Iñarga
Mercedes Gómez de Arteche Botas
Peru Fernandez Arroiabe
Mohammed Mounir Bou-Ali Saidi
Manex Martinez-Agirre
Andoni Diaz de Mendibil Bermejo
Patricio Aguirre Mugica
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fundacion Tekniker
Fundacion Tecnalia Research and Innovation
Original Assignee
Fundacion Tekniker
Fundacion Tecnalia Research and Innovation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fundacion Tekniker, Fundacion Tecnalia Research and Innovation filed Critical Fundacion Tekniker
Priority to EP18382964.7A priority Critical patent/EP3670027A1/de
Publication of EP3670027A1 publication Critical patent/EP3670027A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001Recuperative heat exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00Arrangement of monitoring devices; Arrangement of safety devices
    • F27D21/0014Devices for monitoring temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00Arrangements of controlling devices
    • F27D2019/0006Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0028Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0077Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for tempering, e.g. with cooling or heating circuits for temperature control of elements
    • F28D2021/0078Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for tempering, e.g. with cooling or heating circuits for temperature control of elements in the form of cooling walls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00Coatings; Surface treatments
    • F28F2245/06Coatings; Surface treatments having particular radiating, reflecting or absorbing features, e.g. for improving heat transfer by radiation

Definitions

  • the present invention relates to the field of radiant energy or heat collector assemblies. More particularly, it refers to methods and systems for recovering or capturing heat in the form of radiant energy and using the recovered energy for further purposes such as heating of buildings, electricity production or steam generation.
  • the heat capturing device can be applied in industries such as in steel mills, metallurgy, furnaces or glass production or any other energy intensive industry with high radiant emissions.
  • the European patent application EP2403668 (A2 ) discloses a heat retrieving system in which heat is retrieved via conduction and convection. This patent application uses the transportation rollers as heat exchangers.
  • the patent application DE3019714 (A1 ) discloses a heat collection arrangement comprising water containing tubes. The prior art is silent on heat collection devices especially configured for capturing heat transferred by radiation. It is therefore required a technical arrangement recovering radiant energy or heat from an object or objects being at temperature higher than 500° C.
  • the present application overcomes the drawbacks of the prior art and allows higher energy or heat retrieval of the heat or energy radiated by an object or group of objects.
  • the described heat capturing device comprises an upper side and lateral sides connected to the upper side, said connected sides defining an energy capturing space.
  • the device further comprises an energy insulating layer, an intermediate energy reflecting layer and an inner energy capturing layer capturing energy from at least a radiation emitting object (hereinafter referred to as "object") located at least partly in the energy capturing space.
  • the inner energy capturing layer comprises at least one material containing structure.
  • the material may be a heat transfer fluid (hereinafter referred to as fluid), for example a liquid such as silicon based thermal oil, for capturing energy.
  • the material containing structure may be at least a tube having preferably a circular cross-section.
  • the dimensions of the inner energy capturing layer are based, at least, on the dimensions of the at least an object in the energy capturing space and based on at least a further parameter.
  • Said further parameter may be at least one of: at least one further parameter of said at least an object or at least one parameter of the inner energy capturing layer or at least one parameter of the energy capturing space or a combination of said further parameters.
  • Said further parameter or parameters of the inner energy capturing layer may be intrinsic parameters of the surface of the inner energy capturing layer defining the energy capturing space.
  • the energy insulating layer may entirely cover the intermediate energy reflecting layer, and the intermediate energy reflecting layer may entirely cover the inner energy capturing layer.
  • a further plate or plates may be located at the entrance or exit of the energy capturing space for better retaining and/or reflecting the radiant heat or energy of the object or objects inside the energy capturing space.
  • the plate or plates located at the entrance and/or exit of the energy capturing space may be made of a heat or energy reflecting material.
  • the energy insulating layer may be covered with an outer casing or outer cover for protecting and encapsulating the heat capturing device.
  • the described layers may be different layers which may be separated from each other.
  • the heat capturing device may be connected to a bottom layer or plate or surface made of either reflecting or insulating heat material.
  • the parameter or parameters defining the width and the height of the inner energy capturing layer may be, for example, at least one of: the convection coefficient of the air inside the energy capturing space, the emissivity and absorptivity of at least one of the surfaces of the object, the emissivity and absorptivity of at least one of the surfaces of the inner energy capturing layer or a combination of said parameters.
  • the emissivity and absorptivity of a surface are magnitudes indicating its effectiveness in emitting or absorbing (respectively) thermal radiation. Quantitatively, they are described as the ratio between the thermal radiation emitted/absorbed by a surface compared to the radiation emitted/absorbed by an ideal black body at the same temperature (which is maximum).
  • the parameter or parameters defining the height and width of the heat capturing device may be based on some intrinsic properties of the objects which are to be received in the energy capturing space or transported through the energy capturing space.
  • the objects can be for example a slab, billet or beam resulting from a production process such as a metallurgic production process or preferably a piece of hot glass (e.g. bottle shaped glass) produced by a glass production factory. Said production processes may serially produce objects such as slabs or hot pieces of glass, and some properties of said serially produced objects or pieces are known.
  • the objects may be solid or partly solid objects.
  • the objects are preferably at a temperature higher than 500° C.
  • the fact that the heat capturing device of the present application allows a modular construction permits the customization of the size or dimensions of the heat capturing device or tailoring the size of the heat capturing device according to the properties of the objects, thus allowing to capture the radiated heat from the objects when the objects are partly or completely in the energy capturing space or even slightly outside the energy capturing space.
  • the width and the height of the inner energy capturing layer can be selected based on said properties of the object, which implies that the width and height of the heat capturing device as a whole is selected based on at least the properties of the objects or parameters taking into consideration the properties of the object.
  • the heat capturing device and its size may be configured before the production process of the objects start.
  • the modularity of the heat capturing device permits the heat capturing device to be assembled and/or remove parts of the heat capturing device easily.
  • the inner energy capturing layer for example a tube bundle, may cover an inner surface of a tunnel-shaped surface defined by the energy capturing space or may have a tunnel-shaped arrangement, and the diameter of the tubes of the bundle may be the same or similar.
  • the dimensions or the size of the tube bundle are defined in such a way that the heat captured by the heat capturing device is maximized, mainly the heat transmitted by radiation.
  • the arrangement of the tube bundle may be perpendicular or parallel to the direction of movement of the objects being transported (e.g. objects entering, leaving or being transported through the energy capturing space or objects remaining for some time in the energy capturing space). Heat losses due to convection and radiation of the surfaces of the heat capturing device (e.g. the tubes of the bundle) are minimized using insulating materials.
  • the heat capturing device, and more particularly the inner energy capturing layer may be designed to operate with the fluid flowing through the tubes at a medium fluid temperature around 350° C.
  • the fluid may be at a temperature that satisfies a heat demand with temperatures between 600 and 140° C. In some other examples, the fluid may be at a temperature that satisfies a heat demand with temperatures between 140 and 40° C.
  • the tubes of the bundle may be separated from each other. More preferably, the distance between the center of two consecutive tubes may be between 1,25 and 2 times the external diameter of a tube of the bundle.
  • the bundle of tubes may be connected, e.g. welded, to at least two headers.
  • the headers may be to feed the fluid to the inner energy capturing layer with the fluid being at a first temperature, to distribute the fluid through the inner energy capturing layer such the fluid may increase its temperature from the first temperature to a second temperature by absorbing heat from the object or objects, and to remove the fluid from the inner energy capturing layer with the fluid at the second temperature.
  • the second temperature may be higher than the first temperature.
  • the headers may transport the fluid from/to a fluid storage or to any other device that may reuse the recovered energy for similar or different purposes such as heating of buildings, electricity production or steam generation.
  • the external surface of the bundle of tubes i.e., the surface of the bundle of tubes facing the object, may be covered with a high absorptivity coating or with a high absorptivity paint.
  • the paint may have as much absorptivity as possible in near and mid-infrared spectrum, and at least higher than the corresponding values of the base material of the inner capturing layer.
  • the paint may have an absorptivity around 0,97 for a wavelength between 2-3 microns.
  • the intermediate energy reflecting layer may have a flat structure such as a plate or a corrugated shaped structure or surface or layer behind the bundle of tubes.
  • the corrugated shaped structure may be a sinus shaped surface or sinus shaped structure.
  • the convex part of the corrugated shaped structure is located in correspondence with at least one of the tubes of the bundle and the concave part of the corrugated shaped structure is located in correspondence with at least one of the separations between the tubes.
  • the corrugated or wavy or sinus shaped structure is designed to better focus the reflected heat towards the rear part of the tubes for allowing better heat or energy absorption of the reflected heat, thus allowing an enhanced heat exchange with the rear part of the tubes.
  • the heat capturing device may comprise an energy insulating layer surrounding the intermediate energy reflecting layer.
  • the energy insulating layer may be made of ceramic fiber.
  • the insulating layer may be a separate layer from the other layers.
  • the heat capturing device may further comprise an outer casing covering the energy insulating layer.
  • the outer casing that may be made of metal, contains and protects the heat capturing device.
  • the heat capturing device may comprise one or several sensors.
  • the sensors may be of the same type or may be a combination of different types of sensors.
  • the sensors may be: one or more sensors for measuring the temperature of the object or objects, one or more sensors for measuring the temperature of the energy capturing space, one or more sensors for measuring the temperature inside the tubes or the temperature of the fluid within the tubes, one or more sensors for detecting the object either entering into, or exiting out of or remaining in the energy capturing space or any combination of said sensors.
  • the sensors may be connected to control means, such as a controller or processor or group of processors for processing the information received from the sensors.
  • the control means may process the data received form the sensors and may issue instructions or control data based on the sensed data as provided by one or more of said sensors, based on the processed data or based in a combination of the data as received and the data after being processed.
  • the heat capturing device may comprise transport means for moving the object or objects relative to the energy capturing space.
  • the transport means may be managed by control means, the control means configured to control the transport of the object from or to the energy capturing space.
  • the heat capturing device automatically transports the object to or from the energy capturing space based on a certain temperature captured by at least one or more sensors exceeding or being below a predetermined threshold. Said threshold may define a temperature threshold.
  • the transport means may transport the object through the energy capturing space or may leave the object in the energy capturing space for a predetermined time interval so that the inner energy capturing layer captures heat from the object.
  • the transport means transport the object or objects through the energy capturing space in case the tunnel-shaped heat capturing device or tunnel-shaped inner energy capturing layer is open on both sides, that means no plate or door is placed at the entry and exit of the tunnel-shaped heat capturing device. In case a plate or door is located at the exit of the tunnel-shaped heat capturing device, the transport means use the open entry for entering and removing the object or objects to/from the energy capturing space.
  • the device may comprise further control means, wherein the control means are configured for controlling the quantity of fluid and/or the speed of the fluid circulating in the bundle of tubes, wherein the control means automatically control said quantity and/or speed of fluid based on the data captured by at least one of the sensors.
  • the control means may process the data received from the sensors and based on said processing, the control means may issue instructions or control data.
  • the instructions may control the transport means such as its speed, start and stop functions, may control the quantity of fluid circulating in the bundle of tubes, may control the quantity of fluid in the headers and may control the speed of fluid circulating in the tubes or in the bundle of tubes.
  • the transport means are preferably controlled for transporting the object or objects such that the objects or objects are symmetrically placed or located inside the energy capturing space or symmetrically placed or located while being transported through the energy capturing space.
  • the control means may control the transport means and the speed of transport of the object or objects entering or leaving the energy capturing space. This may be useful in cases in which the object or objects are transported through the energy capturing space.
  • the control means may control the time period an object or objects remain the energy capturing space and it can be implemented by the control means controlling the transport means for stopping and starting the transport means.
  • the instructions of the control means may control the transport means and all devices regulating the flow and/or temperature of fluid in the tubes or headers.
  • the distance of the respective lateral sides of the object to the respective corresponding closest surface or sides of the inner energy capturing layer is preferably the same, or equal or almost the same, while the object (or objects) is in the energy capturing space.
  • a method for capturing energy as indicated by the heat capturing device may be implemented.
  • a heat capturing system is further described.
  • Said heat capturing system comprises a heat capturing device as previously described and at least one object located at least partly in the energy capturing space.
  • the heat capturing device is configured to capture heat from the at least one object that is inserted into the energy capturing space defined by the upper side and lateral sides connected to the upper side of the heat capturing device.
  • the at least one object is cooled by capturing the heat irradiated from the object by the inner energy capturing layer of the heat capturing device.
  • the heat capturing device's geometry (see figure 1 ), in particular the width (A) and the height (B) of the inner energy capturing layer; the object's (or objects') geometry, in particular the height (C) and the width (D) of the object, considering that the object or objects are assimilated to a parallelepiped of smaller volume that can contain them; and the spatial relationship between the heat capturing device and the at least one object, in particular, the height of the position of the heat capturing device relative to the at least one object, influence the thermal behavior of the heat capturing device.
  • the length (L) is the length to be covered in the process with one or more heat capturing devices lined up next to each other (not the length of an individual heat capturing device).
  • F 12 _ 22 G 12 _ 22 x 12 _ 22 2 ⁇ x 12 _ 22 1 ⁇ y 12 _ 22 2 ⁇ y 12 _ 22 1
  • F 21 A 1 A 2 ⁇ F 12
  • F 23 A 3 A 2 ⁇ F 32
  • a 1 2 ⁇ C i ⁇ L + D i ⁇ L
  • a 2 A i ⁇ L + 2 ⁇ B i ⁇ L
  • a 3 2 ⁇ L ⁇ A i ⁇ D i 2 2 + Hzl 2
  • the optimal geometry of the heat capturing device is the one that maximizes the amount of net heat reaching the heat capturing device.
  • Figure 9 shows the different heat fluxes considered.
  • the heat capturing device is assumed to be perfectly insulated from the back.
  • the object 1 and the heat capturing device 2 are considered as grey bodies (a body that emits radiation at each wavelength in a constant ratio less than unity to that emitted by a black body at the same temperature) and the surface 3 is considered a black body (a body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence, an ideal emitter that at every frequency emits as much or more thermal radiative energy as any other body at the same temperature).
  • the next step is to calculate the energy transferred to the internal ambient through convection (Qnet_convection).
  • Q net_convection h conv ⁇ A 2 ⁇ T 2 ⁇ T 3 ;
  • the value of the convection heat transfer coefficient (h conv ) may be introduced by the user.
  • the optimal design is obtained by solving an optimization problem. This is formulated as the maximization of the total heat transferred between the piece (object) and the heat capturing device (more particularly the bundle of tubes of the inner energy capturing layer), subject to the physical and manufacturing constraints.
  • the minimum width and height that the heat capturing device can have are also input parameter.
  • the model-based optimization approach was used to formulate the design optimization problem.
  • the supporting model was developed in Python 3.6 based on physics equations.
  • the proposed solution is based on the L-BFGS-B algorithm implemented in the Scipy (v1.1.0) optimization package.
  • Figures 10-12 show a graphical representation of the listed cases 1-8 mentioned in the following Table 1.
  • Figures 10-12 show a schematic representation of the size ratio between the object and the heat capturing device (named as collector in the figures for clarity purposes).
  • Case 1 has been selected as a reference case where the optimal solution for the heat capturing device geometry matches with the minimal dimensions defined for it. As can be seen in cases 1 to 6 (see Table 1) with the same minimum values for the dimensions of the heat capturing device the optimal solution is affected by:
  • Figure 13 shows a perspective view of an example tunnel shaped heat capturing device 30 wherein the inner energy capturing layer comprises a bundle of tubes 31.
  • the tubes 31 may have preferably a circular cross section.
  • the heat capturing device 30 may be implemented using tubes 31 having other cross sections such as square or elliptical cross sections.
  • the tubes 31 are connected to the represented headers 32.
  • the tubes 31 of the bundle may be welded to the headers 32.
  • the inner energy capturing layer 31 is covered by an intermediate energy reflecting layer 33 that in turn is covered by an energy insulating layer 34, preferably made of ceramic fiber with low thermal conductivity.
  • the energy insulating layer 34 is covered by an outer casing 35, preferably made of a metal.
  • the headers 32 transport the heat captured by the fluid inside the tubes of the heat capturing device 30 to either a heating station or to a heat exchanger (not shown).
  • the heat capturing device 30 comprises control means which may control the flow of fluid in the tubes 31 of the bundle and may control at least one pump, cooling means and/or valves (not shown).
  • the control means of the heat capturing device 30 may control the cooling means or control one or more heat exchangers for regulating the temperature of the fluid flowing in the tubes 31.
  • the control of the pump and/or valves by the control means allow to control the quantity or volume of fluid circulating in the tubes 31.
  • the fluid circulating in the tubes 31 of the bundle may be water, an organic thermal oil or silicone based thermal oil.
  • the objects introduced in the energy capturing space 36 are at high temperatures, such as typically greater than 500°C.
  • the heat capturing device is designed to operate with medium temperatures in the fluid around 350° C.
  • Figure 14 shows a cross-sectional cut of the heat capturing device 30 of figure 13 .
  • all layers namely the outer casing 35, the energy insulating layer 34, the intermediate energy reflecting layer 33 and the inner energy capturing layer 31 (e.g. the tubes) have a tunnel shape as shown which indicates that said layers also define the ceiling and the sides of the tunnel shape arrangement. All said layers may also be at least partly disposed in the floor of said tunnel shaped structure, such that the tubes 31 are also able to capture heat or energy from the floor side of the structure.
  • the outer casing 35 may be disregarded, and it is not installed.
  • the tubes 31 are not in direct contact with the intermediate energy reflecting layer 33 or reflecting plate, i.e., the inner energy capturing layer 31 (e.g. tubes) and the intermediate energy reflecting layer 33 are separated by air or some gas.
  • the inner energy capturing layer 31 may contact the intermediate energy reflecting layer 33.
  • the intermediate energy reflecting layer 33 may be in direct contact with the energy insulating layer 34, or both layers (intermediate energy reflecting layer 33 and energy insulating layer 34) may be separated by a chamber of air or gas or insulating fluid.
  • the energy insulating layer 34 may be in contact with the outer casing 35 or may be separated by air.
  • the outer casing 35 may be made of steel or other metal or may be made of refractory material or heat resistant material.
  • Figure 15 shows a perspective view of another example tunnel-shaped heat capturing device 40 with the tubes 41 being positioned substantially parallel to the direction of displacement of the two objects 47 relative to the energy capturing space 46 defined by the tunnel-shaped heat capturing device 40. While Figure 15 shows two identical objects placed parallel to each other, any number of objects with any different shape and spatial relationship to each other could be placed in the energy capturing space 46.
  • the tubes 41 of the bundle may have preferably a circular cross section although any other cross sections such as square or elliptical cross sections may be implemented.
  • the tubes 41 are connected to the represented headers 42 (not shown in this figure).
  • the headers may be positioned at both openings of the tunnel such that their geometry corresponds to the geometry of the openings.
  • the intermediate energy reflecting layer 43 is attached to the inner surface of the outer energy insulating layer 44.
  • the energy insulating layer 44 is located between the intermediate energy reflecting layer 43 and the outer casing 45.
  • the energy insulating layer 44 may be made of ceramic fiber with low thermal conductivity.
  • Figure 16 shows a cross-sectional representation of the tunnel-shaped heat capturing device and the further layers of the device of figure 15 .
  • Figure 17 shows a perspective view of an example inner energy capturing layer 50.
  • the inner energy capturing layer 50 is formed by a bundle of tubes 51 for circulating the heat transfer fluid, a first header 52 and a second header 53.
  • the tubes 51 are placed in parallel to each other and have the same diameter. Besides, the distance between two consecutives tubes 51 is the same along the entire inner energy capturing layer 50.
  • the fluid 54 ingress in the tubes 51 via the first header 52 through a first opening 55.
  • the first header 52 is divided in sections 56 wherein each section is communicated to a set of tubes 51 but isolated from the contiguous sections 56 within the first header 52.
  • the second header 53 is divided in sections 57 wherein each section is communicated to a set of tubes 51 but isolated from the contiguous sections 57 within the first header 53.
  • the fluid 54 that enters into the first section 56a of the first header 52 circulates through the tubes 51 connected to this first section 56a until the first section 57a of the second header 53, which in turn is connected to other tubes for keeping circulating the fluid towards a second section 56 b of the first header, and so on, until the fluid reaches the last section of the first header 53 through which the fluid 54 exits the inner energy capturing layer 50 via a second opening (not shown in this figure).
  • Figure 18 shows a representation of an example architecture of some tubes of the tube bundle forming the inner energy capturing layer and a representation of the corrugated intermediate energy reflecting layer.
  • the distance (d1) between the centers of two consecutive tubes is 1.25 times the outside diameter of one of the tubes. All tubes have the same diameter.
  • the minimal distance (d2) between the outer surfaces of two consecutives tubes is 0.25 times the diameter of one of the tubes. Due to the particular pattern of the corrugated intermediate energy reflecting layer the radiation going through the existing space between tube is reflected in the reflective corrugated surface and directed back to the collecting tubes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Photovoltaic Devices (AREA)
EP18382964.7A 2018-12-20 2018-12-20 Wärmeaufnahmevorrichtung Withdrawn EP3670027A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18382964.7A EP3670027A1 (de) 2018-12-20 2018-12-20 Wärmeaufnahmevorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18382964.7A EP3670027A1 (de) 2018-12-20 2018-12-20 Wärmeaufnahmevorrichtung

Publications (1)

Publication Number Publication Date
EP3670027A1 true EP3670027A1 (de) 2020-06-24

Family

ID=64755490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18382964.7A Withdrawn EP3670027A1 (de) 2018-12-20 2018-12-20 Wärmeaufnahmevorrichtung

Country Status (1)

Country Link
EP (1) EP3670027A1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56131906U (de) * 1980-02-29 1981-10-06
DE3019714A1 (de) 1980-05-23 1981-12-10 Mannesmann AG, 4000 Düsseldorf Vorrichtung zur rueckgewinnung von waerme aus heissen stahlbrammen
US20110049773A1 (en) * 2009-08-27 2011-03-03 Kiefer Bruce V Heat retention tunnel for processing coils of hot rolled bar and rod products
EP2403668A2 (de) 2009-03-02 2012-01-11 SMS Siemag AG Energierückgewinnung in warmbandstrassen durch umwandlung der kühlwärme der stranggiessanlage sowie der restwärme von brammen und coils in elektrische energie oder sonstige nutzung der aufgefangenen prozesswärme
DE102011107685A1 (de) * 2011-07-13 2013-01-17 Werner Luz Verfahren und Vorrichtung zur Rückgewinnung von Wärmeenergie aus Coils
EP2861771A1 (de) * 2012-06-15 2015-04-22 G.A.P. S.p.A. Vorrichtung zur rückgewinnung von wärme und dämpfen aus beim stahlproduktionszyklus anfallender schlacke
WO2016178641A1 (de) * 2015-05-06 2016-11-10 Topal Ömer Ali Abwärmetauscher für gefertigte warme metallteile
US20180050406A1 (en) * 2015-04-24 2018-02-22 Semikron Elektronik Gmbh & Co. Kg Device, method, and system for cooling a flat object in a nonhomogeneous manner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56131906U (de) * 1980-02-29 1981-10-06
DE3019714A1 (de) 1980-05-23 1981-12-10 Mannesmann AG, 4000 Düsseldorf Vorrichtung zur rueckgewinnung von waerme aus heissen stahlbrammen
EP2403668A2 (de) 2009-03-02 2012-01-11 SMS Siemag AG Energierückgewinnung in warmbandstrassen durch umwandlung der kühlwärme der stranggiessanlage sowie der restwärme von brammen und coils in elektrische energie oder sonstige nutzung der aufgefangenen prozesswärme
US20110049773A1 (en) * 2009-08-27 2011-03-03 Kiefer Bruce V Heat retention tunnel for processing coils of hot rolled bar and rod products
DE102011107685A1 (de) * 2011-07-13 2013-01-17 Werner Luz Verfahren und Vorrichtung zur Rückgewinnung von Wärmeenergie aus Coils
EP2861771A1 (de) * 2012-06-15 2015-04-22 G.A.P. S.p.A. Vorrichtung zur rückgewinnung von wärme und dämpfen aus beim stahlproduktionszyklus anfallender schlacke
US20180050406A1 (en) * 2015-04-24 2018-02-22 Semikron Elektronik Gmbh & Co. Kg Device, method, and system for cooling a flat object in a nonhomogeneous manner
WO2016178641A1 (de) * 2015-05-06 2016-11-10 Topal Ömer Ali Abwärmetauscher für gefertigte warme metallteile

Similar Documents

Publication Publication Date Title
Abanades et al. Design and simulation of a solar chemical reactor for the thermal reduction of metal oxides: Case study of zinc oxide dissociation
Melchior et al. A cavity-receiver containing a tubular absorber for high-temperature thermochemical processing using concentrated solar energy
US11326810B2 (en) Falling particle solar receivers
Mittelman et al. A model and heat transfer correlation for rooftop integrated photovoltaics with a passive air cooling channel
Velmurugan et al. Energy and exergy analysis of solar air heaters with varied geometries
Mills et al. Design evaluation of a next-generation high-temperature particle receiver for concentrating solar thermal applications
Tan et al. Wind effect on the performance of solid particle solar receivers with and without the protection of an aerowindow
Sviatoslavsky et al. A KrF laser driven inertial fusion reactor “SOMBRERO”
US9945585B2 (en) Systems and methods for direct thermal receivers using near blackbody configurations
CN102667336B (zh) 用于在冶炼技术设备中回收能量的方法和基于热电偶的冶炼技术设备
Good et al. A 1.2 MWth solar parabolic trough system based on air as heat transfer fluid at 500 C—Engineering design, modelling, construction, and testing
Martinek et al. Computational modeling and on-sun model validation for a multiple tube solar reactor with specularly reflective cavity walls. Part 1: Heat transfer model
KR102071595B1 (ko) 피동 원자로 공동 냉각장치
EP3670027A1 (de) Wärmeaufnahmevorrichtung
CN109564206A (zh) 用于确定金属产品微观结构的设备和方法以及冶金系统
Ho et al. Fractal-like materials design with optimized radiative properties for high-efficiency solar energy conversion
US20180358134A1 (en) Passive cooling of a nuclear reactor
CN113195131B (zh) 用于增材制造三维构件的制造设备的工艺腔的加热/冷却
Ali et al. Characteristics of heat transfer and fluid flow in a channel with single-row plates array oblique to flow direction for photovoltaic/thermal system
Ramamurthy et al. A thermal system model for a radiant-tube continuous reheating furnace
CN115038913B (zh) 用于基于多次反射储存太阳源热能的装置
Shewale et al. Experimental and numerical analysis of convective heat losses from spherical cavity receiver of solar concentrator
Nandakumar et al. Effect of thermocouple for sodium leak detection for an annular plenum in heat exchanger
Shanmugam et al. Comparative analysis of flat heat pipe heat exchanger with conventional heat recovery systems in steel industry
JP4961502B2 (ja) 放射性物質貯蔵方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20210112

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SAIZ BOMBIN, SERGIO

Inventor name: AGUIRRE MUGICA, PATRICIO

Inventor name: DIAZ DE MENDIBIL BERMEJO, ANDONI

Inventor name: MARTINEZ-AGIRRE, MANEX

Inventor name: BOU-ALI SAIDI, MOHAMMED MOUNIR

Inventor name: ARROIABE, PERU FERNANDEZ

Inventor name: GOMEZ DE ARTECHE BOTAS, MERCEDES

Inventor name: ITURRALDE INARGA, JON

Inventor name: DEL HOYO ARCE, ITZAL

Inventor name: UBIETA ASTIGARRAGA, EDUARDO

Inventor name: FEBRES PASCUAL, JESUS

Inventor name: LOPEZ PEREZ, SUSANA