US20170115073A1 - Heat exchanger elements and divices - Google Patents
Heat exchanger elements and divices Download PDFInfo
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- US20170115073A1 US20170115073A1 US15/082,363 US201615082363A US2017115073A1 US 20170115073 A1 US20170115073 A1 US 20170115073A1 US 201615082363 A US201615082363 A US 201615082363A US 2017115073 A1 US2017115073 A1 US 2017115073A1
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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
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
- F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
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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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
- F28F1/424—Means comprising outside portions integral with inside portions
-
- 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
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/02—Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/086—Heat exchange elements made from metals or metal alloys from titanium or titanium alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
-
- 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
- F28F2013/001—Particular heat conductive materials, e.g. superconductive elements
Definitions
- heat exchangers are made from metals such as brass, copper, aluminum, stainless steel or titanium. Comparatively speaking, these metals are heavy and are subject to corrosion when used in oxidizing environments. Also, these metals have relatively low thermal conductivity when compared to a material such as graphene sheets. Therefore, a heat exchanger utilizing graphene sheet heat transfer plates is especially useful for compact, high efficiency, high temperature, or corrosive fluid applications or applications where weight is of concern.
- Heat exchangers based on graphene thermal transfer media are well known, especially solid/gas heat exchangers.
- the only example of plate type liquid based heat exchangers is U.S. Patent Publication 2015/0083381. It only uses graphene to conduct heat across a plastic membrane.
- the heat transfer material is a sheet of pressed graphene taking advantage of the high thermal differential between in-plane and through-plan thermal conductivity.
- U.S. Pat. No. 6,538,892 deals with a radial finned heat sink assembly for electrical component that has planar fins with graphite layers aligned with plane of the fin so that thermal conductivity in a direction parallel to the plane is greater than that in a perpendicular direction.
- Electrodes may merge with the ductile metallic layer. Then, the electrode is cooled. Upon cooling, the graphene planes are anchored in the ductile metallic layer. The soft and fusible metallic layer provides a bonding interface between the current collector and the graphene planes.
- U.S. Patent publication 2012/0285660 deals with a heatsink e.g., a car radiator, that has a heat exchange device having several heat exchange elements in branched configuration and a flat base that is configured to interface with a heat source.
- the heat exchanging element is comprised of a plurality of spaced-apart through a common wall, plates.
- the plates are capable of transmitting heat from a first end of said plates in contact with a heat source on one side of the common wall, directly to a second end of the plates that are in contact with a heat sink on the opposite side of the common wall.
- the instant invention is, in one embodiment, a heat exchanger based on the use of heat plates or fins made for the purpose with specially formulated 2-dimensional thermal conductive sheets or paper made of 2-dimensional thermal conductive materials.
- Liquid-liquid, liquid—gas or gas-gas heat exchangers may have fins or heat exchanger plates to conduct heat between hot and cold sides of the device.
- Two-dimensional thermal conductive of sheet or paper have very high thermal conductivity in the direction of the plane and more limited thermal conductivity transverse to the plane of the graphene sheet.
- An exchanger based on 2-dimensional thermal conductive sheets is, therefore, more uniform in temperature across the entire device, which results in high overall efficiency and lack of relatively hot and cold spots.
- Two-dimensional thermal conductive sheets have high resistance to acids, bases, and solvents making such heat exchangers useful for extreme working fluids or corrosive gases.
- FIG. 1 is a full front view of an illustration of a thermal conductive element of this invention.
- FIG. 2 is a full front illustration of a curved thermal conductive element of this invention.
- FIG. 3 is an illustration in perspective of a circular heat exchanging element with two heat transfer plates inserted longitudinally through the wall of the tube.
- FIG. 4 is an illustration of a full end view of the heat exchanging element of FIG. 3 .
- FIG. 5 is an illustration of a full end view of a heat exchanger of the tube and shell type with hot fluids flowing through a single circular heat exchanging element.
- FIG. 6 is an illustration of a full end view of a heat exchanger with hot fluids flowing through two circular heat exchanging elements.
- FIG. 7 is an illustration of a full side view of a rectangular heat exchanger with a heat exchanging element separating hot and cold zones.
- FIG. 8 is an illustration of a full side view of an example of two rectangular heat exchanger assembly in series by stacking.
- FIG. 9A is a side view of a plate type heat exchanger with heat transfer plates penetrating the separator plates between hot and cold zones.
- FIG. 9B is a front view of a plate type heat exchanger with heat transfer plates penetrating the separator plates between hot and cold zones.
- FIG. 9C is a view in perspective of stacked plates of a plate type heat exchanger with heat transfer plates penetrating the separator plates between hot and cold zones.
- FIG. 10 is an illustration of a full side view of a composite heat exchanger plate.
- FIG. 11 is an illustration of a full top view of an example of a heat exchanger element with corrugated heat transfer plates to cause turbulent flow.
- FIG. 12 is an illustration of a full top view of a heat exchanger element with heat transfer plates for laminar flow.
- This type of deployment is novel in that it contemplates the use of specially constructed heat exchange plates to take advantage of the high anisotropic thermal conductivity of the 2-dimensional thermal conductive materials heat exchanger plates across the plane of the materials, and it also exposes a much greater surface area to both hot and cold fluids, resulting in unexpectedly high heat transfer rates.
- the device is unexpectedly uniform in temperature and performance when compared to conventional heat exchangers, especially those typically used in corrosive environments.
- the use of 2-dimensional thermal conductive materials heat exchanger plates to conduct heat allows for the use of non-thermally conductive materials like plastics or composites for the structural components of the heat exchanger, which opens a wide range of possibilities to make these devices lighter, more resistant to corrosion, and smaller.
- Graphene sheets for example, can be manufactured in a manner that may or may not utilize binders and that include fillers tailored for specific purposes. These sheets have very high anisotropic thermal conductivity in the plane, but relatively low tensile or mechanical strength. They may also have low resistance to shear forces or surface abrasion, which can cause flaking and delamination of the graphene sheet. Therefore, the sheets may be reinforced to increase strength and resist flaking.
- the reinforcement may be a surface coating, a laminated sheet of another material, or internal materials such as fibers, or a combination of these reinforcements.
- Surface coatings may include polymeric or other coating materials specially selected to aid in heat transfer.
- Internal strengthening aids may include binders and metallic or ceramic fibers or other materials specially selected to improve heat transfer while adding strength.
- Lamination materials may include sheets of thermoplastic or thermoset materials, sheets of fabric, or sheets composed of metallic materials.
- FIG. 1 a full front view of an illustration of a thermal conductive element 1 of this invention.
- heat transfer plates 2 penetrating through a barrier 3 that separates hot 4 and cold 5 zones.
- Barrier 3 can consist of spacers, gaskets, or solid plates that form a barrier to prevent fluid interchange between hot and cold zones.
- the heat spreading heat transfer plate 2 are vertically aligned to a substrate by inserting the heat transfer plates 2 through the barrier 3 of the substrate.
- the heat transfer plates 2 are coated by the thermal heat conducting 2-dimensional material that is made of metal, ceramic, polymeric, carbonaceous, laminates, or composite materials.
- the heat transfer plates 2 are made of heat conducting plates of metals, ceramics, carbonaceous, laminates, or composite materials,
- the heat conducting plates and the barrier 3 are used to separate the hot and cold fluids in a heat exchanger.
- the heat exchanger heat transfer plates 2 are made by laminating graphene-based thermal spreading sheets on both side of a substrate such as aluminum plate.
- the heat transfer plates 2 are made by coating a graphene-based thermal ink on a substrate.
- the heat exchanger device 1 can be made in many different configurations, depending on the intended end use, as shown in FIGS. 3 to 12 , wherein there is shown a circular heat exchanger 6 wherein 7 and 7 ′ are heat transfer plates that are inserted longitudinally through the wall 8 of a tube 9 , which becomes more clear by observing FIG. 4 , which is full end view of the heat exchanging element of FIG. 3 showing the heat transfer plates 7 / 7 ′ penetrating the tube 9 wall.
- FIG. 2 is a full front illustration of a curved thermal conductive element 10 of this invention showing the heat transfer plates 2 penetrating through a barrier 3 that separates hot 4 and cold 5 zones.
- FIG. 5 is an illustration of a full end view of a heat exchanger 11 of the tube and shell type with hot fluids 4 flowing through a single circular heat exchanging element.
- FIG. 6 is an illustration of a full end view of a heat exchanger 12 with hot fluids 4 flowing through two circular heat exchanging elements 13 and 14 .
- FIG. 7 there is shown an illustration of a full side view of a rectangular heat exchanger 15 with a heat exchanging element 16 separating hot 4 and cold 5 zones. Shown are the hot inlet 16 and the hot outlet 17 , along with a cold inlet 18 and a cold outlet 19 . Also shown are the heat transfer plates 2 penetrating through the barrier 3 .
- FIG. 8 shows an example of two rectangular heat exchanges assemble in a series by stacking the.
- the hot inlet 16 and the hot outlet 17 along with a cold inlet 18 and a cold outlet 19 .
- the heat transfer plates 2 penetrating through the barrier 3 . It should be noted that the hot outlet 17 and hot inlet 16 are joined together on one end as are the cold outlet 19 and the cold inlet 18 .
- FIGS. 9A, 9B, and 9C show an example of a plate type heat exchanger with heat transfer plates penetrating the barrier plates 3 between hot 4 and cold 5 zones.
- the heat transfer plates 2 , the back plate, or barrier 3 , and stacked plates 20 are shown.
- FIG. 10 is an illustration of a composite heat exchanger plate 21 , wherein 22 is graphite film, 23 is an adhesive, 24 is a barrier wall, 25 is additional adhesive, and 26 is graphite leaf.
- the plate is surrounded by a polymeric coating 27 .
- FIG. 11 shows an illustration showing a top view of a heat exchanger element 28 with corrugated heat transfer plates 29 to cause turbulent flow in the heat exchanger.
- FIG. 12 is an illustration of a heat exchanger element 30 with heat transfer plates 31 for laminar flow in the heat exchanger.
- the heat exchanger plates are made by laminating 2-dimensional thermal conductive materials onto thermal spreading sheets on both sides of a substrate such as aluminum plate.
- the heat transfer plates are made by coating of a 2-dimensional thermal conductive thermal ink on a substrate.
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Abstract
Description
- This application is a utility patent application from Provisional Patent application Ser. No. 62/244,927, filed Oct. 22, 2015 from which priority is claimed.
- Most heat exchangers are made from metals such as brass, copper, aluminum, stainless steel or titanium. Comparatively speaking, these metals are heavy and are subject to corrosion when used in oxidizing environments. Also, these metals have relatively low thermal conductivity when compared to a material such as graphene sheets. Therefore, a heat exchanger utilizing graphene sheet heat transfer plates is especially useful for compact, high efficiency, high temperature, or corrosive fluid applications or applications where weight is of concern.
- Heat exchangers based on graphene thermal transfer media are well known, especially solid/gas heat exchangers. The only example of plate type liquid based heat exchangers is U.S. Patent Publication 2015/0083381. It only uses graphene to conduct heat across a plastic membrane. There is no art found in which the heat transfer material is a sheet of pressed graphene taking advantage of the high thermal differential between in-plane and through-plan thermal conductivity.
- Other patent and publication disclosures that the patentees are aware of include, U.S. Pat. No. 8,269,098 which discloses a fin formed of carbon composite materials, i. e. graphene. U.S. Patent Publication 2014/0060087 deals with a heat radiation-thermoelectric fin which includes a heterogeneous laminate of graphene and a thermoelectric inorganic material.
- U.S. Pat. No. 6,538,892 deals with a radial finned heat sink assembly for electrical component that has planar fins with graphite layers aligned with plane of the fin so that thermal conductivity in a direction parallel to the plane is greater than that in a perpendicular direction.
- Publication WO2009/142924 deals with electrodes. The transition metal catalyst may merge with the ductile metallic layer. Then, the electrode is cooled. Upon cooling, the graphene planes are anchored in the ductile metallic layer. The soft and fusible metallic layer provides a bonding interface between the current collector and the graphene planes.
- U.S. Patent publication 2012/0285660 deals with a heatsink e.g., a car radiator, that has a heat exchange device having several heat exchange elements in branched configuration and a flat base that is configured to interface with a heat source.
- Thus, what is disclosed and claimed herein is a heat exchanging element. The heat exchanging element is comprised of a plurality of spaced-apart through a common wall, plates. The plates are capable of transmitting heat from a first end of said plates in contact with a heat source on one side of the common wall, directly to a second end of the plates that are in contact with a heat sink on the opposite side of the common wall.
- In a second embodiment, there is the use of such a heat exchanging element in a heat exchanger device.
- The instant invention is, in one embodiment, a heat exchanger based on the use of heat plates or fins made for the purpose with specially formulated 2-dimensional thermal conductive sheets or paper made of 2-dimensional thermal conductive materials. Liquid-liquid, liquid—gas or gas-gas heat exchangers may have fins or heat exchanger plates to conduct heat between hot and cold sides of the device. Two-dimensional thermal conductive of sheet or paper have very high thermal conductivity in the direction of the plane and more limited thermal conductivity transverse to the plane of the graphene sheet. An exchanger based on 2-dimensional thermal conductive sheets is, therefore, more uniform in temperature across the entire device, which results in high overall efficiency and lack of relatively hot and cold spots. This allows a more compact design and a better device for heat sensitive fluids or for applications requiring precise temperature ranges. Two-dimensional thermal conductive sheets have high resistance to acids, bases, and solvents making such heat exchangers useful for extreme working fluids or corrosive gases.
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FIG. 1 is a full front view of an illustration of a thermal conductive element of this invention. -
FIG. 2 is a full front illustration of a curved thermal conductive element of this invention. -
FIG. 3 is an illustration in perspective of a circular heat exchanging element with two heat transfer plates inserted longitudinally through the wall of the tube. -
FIG. 4 is an illustration of a full end view of the heat exchanging element ofFIG. 3 . -
FIG. 5 is an illustration of a full end view of a heat exchanger of the tube and shell type with hot fluids flowing through a single circular heat exchanging element. -
FIG. 6 is an illustration of a full end view of a heat exchanger with hot fluids flowing through two circular heat exchanging elements. -
FIG. 7 is an illustration of a full side view of a rectangular heat exchanger with a heat exchanging element separating hot and cold zones. -
FIG. 8 is an illustration of a full side view of an example of two rectangular heat exchanger assembly in series by stacking. -
FIG. 9A is a side view of a plate type heat exchanger with heat transfer plates penetrating the separator plates between hot and cold zones. -
FIG. 9B is a front view of a plate type heat exchanger with heat transfer plates penetrating the separator plates between hot and cold zones. -
FIG. 9C is a view in perspective of stacked plates of a plate type heat exchanger with heat transfer plates penetrating the separator plates between hot and cold zones. -
FIG. 10 is an illustration of a full side view of a composite heat exchanger plate. -
FIG. 11 is an illustration of a full top view of an example of a heat exchanger element with corrugated heat transfer plates to cause turbulent flow. -
FIG. 12 is an illustration of a full top view of a heat exchanger element with heat transfer plates for laminar flow. - Most, if not all, industrial heat exchangers rely on the thermal conductivity of a metallic material to conduct heat in a direction that is transverse to the plane of the material, that is, through the wall of a tube or across a metal plate, for example. Instead of relying on this transverse thermal conductivity through the wall of material dividing the hot and cold zones, the instant invention makes use of specially constructed 2-dimensional thermal conductive heat exchanger plates or fins that are deployed in a manner in which they interpenetrate the hot and cold zones of a heat exchange device. This type of deployment is novel in that it contemplates the use of specially constructed heat exchange plates to take advantage of the high anisotropic thermal conductivity of the 2-dimensional thermal conductive materials heat exchanger plates across the plane of the materials, and it also exposes a much greater surface area to both hot and cold fluids, resulting in unexpectedly high heat transfer rates. The device is unexpectedly uniform in temperature and performance when compared to conventional heat exchangers, especially those typically used in corrosive environments. Additionally, the use of 2-dimensional thermal conductive materials heat exchanger plates to conduct heat, allows for the use of non-thermally conductive materials like plastics or composites for the structural components of the heat exchanger, which opens a wide range of possibilities to make these devices lighter, more resistant to corrosion, and smaller.
- Graphene sheets, for example, can be manufactured in a manner that may or may not utilize binders and that include fillers tailored for specific purposes. These sheets have very high anisotropic thermal conductivity in the plane, but relatively low tensile or mechanical strength. They may also have low resistance to shear forces or surface abrasion, which can cause flaking and delamination of the graphene sheet. Therefore, the sheets may be reinforced to increase strength and resist flaking. The reinforcement may be a surface coating, a laminated sheet of another material, or internal materials such as fibers, or a combination of these reinforcements. Surface coatings may include polymeric or other coating materials specially selected to aid in heat transfer. Internal strengthening aids may include binders and metallic or ceramic fibers or other materials specially selected to improve heat transfer while adding strength. Lamination materials may include sheets of thermoplastic or thermoset materials, sheets of fabric, or sheets composed of metallic materials.
- Turning now to the Figures, there is shown in
FIG. 1 a full front view of an illustration of a thermal conductive element 1 of this invention. There is also shownheat transfer plates 2 penetrating through abarrier 3 that separates hot 4 and cold 5 zones.Barrier 3 can consist of spacers, gaskets, or solid plates that form a barrier to prevent fluid interchange between hot and cold zones. - The heat spreading
heat transfer plate 2 are vertically aligned to a substrate by inserting theheat transfer plates 2 through thebarrier 3 of the substrate. Theheat transfer plates 2 are coated by the thermal heat conducting 2-dimensional material that is made of metal, ceramic, polymeric, carbonaceous, laminates, or composite materials. Theheat transfer plates 2 are made of heat conducting plates of metals, ceramics, carbonaceous, laminates, or composite materials, The heat conducting plates and thebarrier 3 are used to separate the hot and cold fluids in a heat exchanger. In one embodiment, the heat exchangerheat transfer plates 2 are made by laminating graphene-based thermal spreading sheets on both side of a substrate such as aluminum plate. Yet, in another embodiment, theheat transfer plates 2 are made by coating a graphene-based thermal ink on a substrate. - The heat exchanger device 1 can be made in many different configurations, depending on the intended end use, as shown in
FIGS. 3 to 12 , wherein there is shown acircular heat exchanger 6 wherein 7 and 7′ are heat transfer plates that are inserted longitudinally through thewall 8 of atube 9, which becomes more clear by observingFIG. 4 , which is full end view of the heat exchanging element ofFIG. 3 showing theheat transfer plates 7/7′ penetrating thetube 9 wall. -
FIG. 2 is a full front illustration of a curved thermalconductive element 10 of this invention showing theheat transfer plates 2 penetrating through abarrier 3 that separates hot 4 and cold 5 zones. -
FIG. 5 is an illustration of a full end view of aheat exchanger 11 of the tube and shell type withhot fluids 4 flowing through a single circular heat exchanging element. -
FIG. 6 is an illustration of a full end view of aheat exchanger 12 withhot fluids 4 flowing through two circularheat exchanging elements - Turning now to
FIG. 7 , there is shown an illustration of a full side view of arectangular heat exchanger 15 with aheat exchanging element 16 separating hot 4 and cold 5 zones. Shown are thehot inlet 16 and thehot outlet 17, along with acold inlet 18 and acold outlet 19. Also shown are theheat transfer plates 2 penetrating through thebarrier 3. -
FIG. 8 shows an example of two rectangular heat exchanges assemble in a series by stacking the. Thus, there is shown thehot inlet 16 and thehot outlet 17, along with acold inlet 18 and acold outlet 19. Also shown are theheat transfer plates 2 penetrating through thebarrier 3. It should be noted that thehot outlet 17 andhot inlet 16 are joined together on one end as are thecold outlet 19 and thecold inlet 18. -
FIGS. 9A, 9B, and 9C show an example of a plate type heat exchanger with heat transfer plates penetrating thebarrier plates 3 between hot 4 and cold 5 zones. Thus, there is shown theheat transfer plates 2, the back plate, orbarrier 3, andstacked plates 20. -
FIG. 10 is an illustration of a compositeheat exchanger plate 21, wherein 22 is graphite film, 23 is an adhesive, 24 is a barrier wall, 25 is additional adhesive, and 26 is graphite leaf. The plate is surrounded by apolymeric coating 27. -
FIG. 11 shows an illustration showing a top view of aheat exchanger element 28 with corrugatedheat transfer plates 29 to cause turbulent flow in the heat exchanger. - Finally,
FIG. 12 is an illustration of aheat exchanger element 30 withheat transfer plates 31 for laminar flow in the heat exchanger. - The heat exchanger plates are made by laminating 2-dimensional thermal conductive materials onto thermal spreading sheets on both sides of a substrate such as aluminum plate. In another embodiment, the heat transfer plates are made by coating of a 2-dimensional thermal conductive thermal ink on a substrate.
Claims (54)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US15/082,363 US20170115073A1 (en) | 2015-10-22 | 2016-03-28 | Heat exchanger elements and divices |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201562244927P | 2015-10-22 | 2015-10-22 | |
US15/082,363 US20170115073A1 (en) | 2015-10-22 | 2016-03-28 | Heat exchanger elements and divices |
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US20180014435A1 (en) * | 2016-07-08 | 2018-01-11 | Mark Occhionero | Thermal management device for heat generating power electronics incorporating high thermal conductivity pyrolytic graphite and cooling tubes |
US20180112928A1 (en) * | 2016-10-25 | 2018-04-26 | Honeywell International Inc. | Ultra-low temperature heat exchangers |
US20180233427A1 (en) * | 2017-02-10 | 2018-08-16 | Amazing Cool Technology Corp | Graphite heat sink |
WO2019149446A1 (en) * | 2018-01-30 | 2019-08-08 | Linde Aktiengesellschaft | Insulating surface coating on heat exchangers for reducing thermal stresses |
CN110332836A (en) * | 2019-06-28 | 2019-10-15 | 河海大学常州校区 | A kind of anti-incrustation pipe heat exchanger |
US10976120B2 (en) | 2017-10-13 | 2021-04-13 | Hamilton Sundstrand Corporation | Net shape moldable thermally conductive materials |
US20210218040A1 (en) * | 2020-04-03 | 2021-07-15 | Zhejiang University | High-efficiency heat exchanger for temperature control system of fuel cell and processing device thereof |
CN114136126A (en) * | 2021-11-29 | 2022-03-04 | 无锡齐为金属科技有限公司 | Finned tube type heat exchanger |
US11313631B2 (en) * | 2020-07-07 | 2022-04-26 | Hfc Industry Limited | Composite heat sink having anisotropic heat transfer metal-graphite composite fins |
US20230058192A1 (en) * | 2020-03-13 | 2023-02-23 | Safran | Device for transferring heat |
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US20230058192A1 (en) * | 2020-03-13 | 2023-02-23 | Safran | Device for transferring heat |
US20210218040A1 (en) * | 2020-04-03 | 2021-07-15 | Zhejiang University | High-efficiency heat exchanger for temperature control system of fuel cell and processing device thereof |
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US11313631B2 (en) * | 2020-07-07 | 2022-04-26 | Hfc Industry Limited | Composite heat sink having anisotropic heat transfer metal-graphite composite fins |
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