US20080128121A1 - Heat Storage Device with Heat-Radiative Coating - Google Patents
Heat Storage Device with Heat-Radiative Coating Download PDFInfo
- Publication number
- US20080128121A1 US20080128121A1 US11/815,488 US81548805A US2008128121A1 US 20080128121 A1 US20080128121 A1 US 20080128121A1 US 81548805 A US81548805 A US 81548805A US 2008128121 A1 US2008128121 A1 US 2008128121A1
- Authority
- US
- United States
- Prior art keywords
- heat
- heat retainer
- retainer
- coating layer
- highly
- 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.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
- F27D1/042—Bricks shaped for use in regenerators
-
- 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
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
-
- 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
- F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
- F28D17/02—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
-
- 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
- F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage 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
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2245/00—Coatings; Surface treatments
- F28F2245/06—Coatings; Surface treatments having particular radiating, reflecting or absorbing features, e.g. for improving heat transfer by radiation
-
- 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 heat exchanger and more particularly to a heat exchanger with a highly-radiative coating layer facilitating heat exchange.
- heat exchangers In industrial fields such as metallurgy, machinery and farm product processing, heat exchangers are commonly-used. The main function of a heat exchanger is to transfer heat to air or gas.
- One type of heat exchangers uses coal, gas, oil or electricity as a direct heat source.
- Another type of heat exchangers employs secondary sources of heat.
- a heat source firstly transfers energy to a heat retainer of the heat exchanger, and then air or gas that needs to be heated is passed over it. During heat exchange between the heat retainer and air or gas, heat is removed from the heat retainer, and air or gas is heated.
- the heat retainer is made of a refractory material, a ceramic material, an iron or a steel material.
- Heat absorption and emission capability of heat retainers is an important factor for the heat exchange performance of a heat exchanger, and is directly associated with power savings.
- a plurality of patents such as CN2462326Y and CN2313197Y, provide structural improvements.
- a heat exchanger employing a coating layer made of highly radiative material has not heretofore been proposed to improve the heat storage capability of the heat retainer and, in turn, to improve the efficiency of the heat exchanger.
- the invention provides a heat retainer with a coating layer for facilitating heat exchange, wherein at least one surface of the heat retainer is coated with a coating layer made of a highly-radiative material.
- the thickness of the highly-radiative material coating layer is 0.02-3 mm.
- the emissivity of the highly-radiative material is greater than that of the substrate material of which the core of the heat retainer is made.
- the highly-radiative material is a material having an absorption rate and an emission rate higher than those of the substrate material of which the core of the heat retainer is made.
- the heat retainer takes the shape of a honeycomb, a fin, a ball, an ellipse or a plate.
- One or a plurality of inner holes is disposed within the heat retainer.
- the inner hole is circular, square, rectangular, rhombic, hexagonal or polygonal.
- the substrate of the heat retainer is made of a refractory material, a ceramic material, an iron or a steel material.
- a cross section of the heat retainer is circular, square, rectangular, rhombic, hexagonal or polygonal.
- the highly-radiative material is any suitable highly-radiative far-infrared material suitable for a heat retainer made of a refractory material, a ceramic material or a steel material.
- the coating layer made of highly-radiative material is implemented by way of paste-coating, spray-coating or dip-coating, and the heat retainer having the coating layer is used directly after coating, or is used after high temperature curing.
- Surfaces of the substrate of the heat retainer are pre-treated with a pre-treating liquid prior to being paste-coated, spray-coated or dip-coated with the highly-radiative material, so as to further improve adhesion between the highly-radiative material and the substrate.
- the pre-treating liquid is an aqueous solution containing polyamine curing agent PA80 (PA80 adhesive) or an alkali metal silicate.
- Solid components in the highly-radiative material are hyperfinely processed, so as to enable the particle size to be 20-900 nm, and to improve adhesion between the highly-radiative material and the substrate.
- heat retainer for the heat exchanger of the invention are coated with a coating layer of highly-radiative material whose emissivity is greater than that of the substrate material of which the core of the heat retainer is made; the heat absorption and emission capability of the heat exchanger is increased, which improves heat absorption and emission of the heat retainer, and increases the heat storage capacity.
- the heat exchange efficiency of the heat exchanger also saves energy.
- a checker brick of a hot blast stove of a blast furnace is coated with the highly radiative material, temperature inside the hot blast stove is uniformly distributed, and the heat storage capacity is notably increased. This raises the temperature of the circulating air, shortens the startup period, and reduces the gas amount and air flow. Reduction of the gas amount and the air flow further saves energy, lowers the requirement of a wind turbine, and reduces the overall cost of devices.
- the coating layer of the heat retainer also operates to protect the substrate of which the core of the heat retainer is made. When the surfaces of the heat retainer of a steel-rolling regenerative furnace are coated with the highly-radiative material, temperature inside the heat retainer increases significantly.
- FIG. 1 is a diagram illustrating a honeycomb-shaped heat retainer with a coating layer for a heat exchanger according to one embodiment of the invention
- FIG. 2 is a diagram illustrating a honeycomb-shaped heat retainer with a coating layer for a heat exchanger according to another embodiment of the invention
- FIG. 3 is a diagram illustrating a fin-shaped heat retainer with a coating layer for a heat exchanger according to another embodiment of the invention.
- FIG. 4 is a partial cross-sectional view illustrating a plate-shaped heat retainer with a coating layer for a heat exchanger according to yet another embodiment of the invention
- FIG. 5 is a partial cross-sectional view illustrating a ball-shaped heat retainer with a coating layer for a heat exchanger according to yet another embodiment of the invention
- FIG. 6 is a diagram illustrating an elliptical heat retainer with a coating layer for a heat exchanger according to yet another embodiment of the invention.
- FIG. 7 is a partial cross-sectional view illustrating a non-metal heat retainer with a coating layer for a heat exchanger according to yet another embodiment of the invention.
- a heat retainer used for a hot blast stove of a blast furnace is a checker brick.
- the checker brick (heat retainer) has a plurality of circular inner holes 1 , and all surfaces (comprising those of the inner holes) of the check brick (heat retainer) are coated with a coating layer of a highly radiative material 2 whose thickness is 0.02 mm.
- a substrate of the heat retainer is a refractory material
- the highly-radiative material coating layer 2 is a highly-radiative material whose emissivity in the far-infrared region is greater than that of a substrate material of the heat retainer.
- the highly-radiative material coating layer 2 comprises by weight: 110 parts of Cr 2 O 3 , 80 parts of clays, 90 parts of montmorillonites, 300 parts of brown corundums, 100 parts of silicon carbides, 400 parts of PA80 adhesive and 100 parts of water. These components are hyperfinely processed, so as to enable the particle size to be in the 25-700 nm range. Compared with existent heat exchangers, the heat exchanger of this embodiment saves over 20% of energy.
- the cross section of the honeycomb-shaped heat retainer is rectangular; and the highly-radiative material coating layer is disposed within a plurality of circular inner holes 3 (as shown in FIG. 2 ).
- the heat retainer for a heat exchange is fin-shaped.
- a plurality of rectangular inner holes 5 are disposed in the heat retainer, and all surfaces (comprising surfaces of the inner holes) of the heat retainer for the heat exchanger are paste-coated with a highly-radiative material coating layer 6 whose thickness is 0.03 mm.
- a substrate of the heat retainer is a ceramic material, and the highly-radiative material coating layer 4 is a highly-radiative material whose far-infrared emissivity is greater than that of a substrate material of the heat retainer.
- the highly-radiative material comprises by weight: 15 parts of zirconium oxide, 8 parts of Cr 2 O 3 , 10 parts of TiO 2 , 2 parts of montmorillonites, 15 parts of Al 2 O 3 , 10 parts of carborundums, 30 parts of PA80 adhesives, and 10 parts of water.
- the heat efficiency of the heat exchanger according to this embodiment is improved by over 10%.
- the heat retainer for use in a heat exchanger is plate-shaped; and the surfaces of the heat retainer are paste-coated with a coating layer 7 made of a highly-radiative material and whose thickness is 0.1 mm.
- a substrate 8 of the heat retainer is an iron and a steel material, and the highly-radiative material is a highly-radiative material whose far-infrared emissivity is greater than that of the substrate material.
- the highly-radiative material comprises by weight: 60 parts of Cr 2 O 3 , 200 parts of brown corundums, 50 parts of clays, 30 parts of montmorillonites, 200 parts of silicon carbides, 200 parts of hydrated sodium silicate gels, and 100 parts of water.
- the outer surface of the coating layer 7 is the heat exchange surface 9 .
- the surfaces of the heat retainer are coated with a pre-treating liquid prior to being paste-coated with the highly-radiative material.
- the pre-treating liquid comprises 10% aqueous solution (by weight) of hydrated sodium silicate gels. Compared with existent heat exchangers, the heating efficiency of the heat exchanger of this embodiment is improved by over 10%.
- the heat retainer for a heat exchanger is ball-shaped, and the surfaces of the heat retainer are paste-coated with a highly-radiative material resulting in a coating layer 11 whose thickness is 2 mm.
- An outer surface of the coating layer 7 is the heat exchange surface 12 .
- a substrate 10 of the heat retainer is a refractory material, and the highly-radiative material forming the coating layer 11 is a highly-radiative material whose far-infrared emissivity is greater than that of a substrate material.
- the highly-radiative material comprises by weight: 5 parts of zirconium oxide, 10 parts of silicon carbides, 5 parts of titanium, 3 parts of clays, 40 parts of brown corundums, 10 parts of aluminum hydroxides, 15 parts of phosphoric acid, and 12 parts of water.
- the heat retainer according to this embodiment is applicable for use as a regenerative furnace, in which the ball-shaped heat retainer exchanges heat within a heat accumulator being part of the regenerative furnace.
- the heat retainer for a heat exchanger is elliptical in shape (as shown in FIG. 6 ).
- the surfaces of a ball-shaped heat retainer are spray-coated with a highly-radiative material giving rise to a coating layer whose thickness is 2.5 mm.
- the coating layer comprises by weight: 15 parts of silicon carbides, 2 parts of brown corundums, 35 parts of zirconias, 2 parts of montmorillonites, 6 parts of chromium oxides, 27 parts of PA80 adhesives and parts of 13 water.
- the surfaces of the heat retainer are coated with pre-treating liquid prior to being spray-coated with the highly-radiative material,
- the pre-treating liquid comprises 10% aqueous solution (by weight) of PA80 adhesive.
- the surfaces of a ceramic substrate 13 of a heat retainer are paste-coated with a highly-radiative material resulting in a coating layer 14 whose thickness is 3 mm.
- the outer surface of the coating layer 14 is the heat exchange surface 15 .
- the coating layer comprises by weight: 60 parts of Fe 2 O 3 , 5 parts of zirconias, 20 parts of hydrated sodium silicate gels and 15 parts of water.
- the surfaces of the heat retainer are coated with a pre-treating liquid prior to being paste-coated with the highly-radiative material coating layer.
- the pre-treating liquid comprising a 8% by weight aqueous solution of hydrated sodium silicate gels.
- the highly-radiative material forming a coating layer on the heat retainer may be freely selected.
- the above embodiments are intended to be illustrative only, and are not meant to limit the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Taught herein is a heat retainer for a heat exchanger the retainer having a coating layer. At least one surface of the heat retainer is coated with a highly-radiative material forming a coating layer whose emissivity is greater than that of a substrate material of which the core of the heat retainer is made. The heat retainer is in the shape of a honeycomb, a fin, a ball, an ellipse or a plate, and one or a plurality of inner holes are disposed therein. The substrate of which the heat retainer is made is a refractory material, a ceramic material or a steel material. The heat retainer has comparatively good heat absorption and emission performance; heat storage capacity is increased, diathermancy is improved, and energy is saved.
Description
- The invention relates to a heat exchanger and more particularly to a heat exchanger with a highly-radiative coating layer facilitating heat exchange.
- In industrial fields such as metallurgy, machinery and farm product processing, heat exchangers are commonly-used. The main function of a heat exchanger is to transfer heat to air or gas. One type of heat exchangers uses coal, gas, oil or electricity as a direct heat source. Another type of heat exchangers employs secondary sources of heat. A heat source firstly transfers energy to a heat retainer of the heat exchanger, and then air or gas that needs to be heated is passed over it. During heat exchange between the heat retainer and air or gas, heat is removed from the heat retainer, and air or gas is heated. Generally, the heat retainer is made of a refractory material, a ceramic material, an iron or a steel material.
- Heat absorption and emission capability of heat retainers is an important factor for the heat exchange performance of a heat exchanger, and is directly associated with power savings. To improve the heat exchange efficiency of a heat exchanger, a plurality of patents, such as CN2462326Y and CN2313197Y, provide structural improvements. However, a heat exchanger employing a coating layer made of highly radiative material has not heretofore been proposed to improve the heat storage capability of the heat retainer and, in turn, to improve the efficiency of the heat exchanger.
- To overcome the deficiencies of prior art, it is one objective of the invention to provide a highly-efficient and energy-saving heat retainer with a coating layer for facilitating heat exchange.
- The invention provides a heat retainer with a coating layer for facilitating heat exchange, wherein at least one surface of the heat retainer is coated with a coating layer made of a highly-radiative material.
- The thickness of the highly-radiative material coating layer is 0.02-3 mm.
- The emissivity of the highly-radiative material is greater than that of the substrate material of which the core of the heat retainer is made.
- Advantageously, the highly-radiative material is a material having an absorption rate and an emission rate higher than those of the substrate material of which the core of the heat retainer is made.
- The heat retainer takes the shape of a honeycomb, a fin, a ball, an ellipse or a plate.
- One or a plurality of inner holes is disposed within the heat retainer. The inner hole is circular, square, rectangular, rhombic, hexagonal or polygonal. The substrate of the heat retainer is made of a refractory material, a ceramic material, an iron or a steel material.
- A cross section of the heat retainer is circular, square, rectangular, rhombic, hexagonal or polygonal.
- The highly-radiative material is any suitable highly-radiative far-infrared material suitable for a heat retainer made of a refractory material, a ceramic material or a steel material.
- The coating layer made of highly-radiative material is implemented by way of paste-coating, spray-coating or dip-coating, and the heat retainer having the coating layer is used directly after coating, or is used after high temperature curing.
- Surfaces of the substrate of the heat retainer are pre-treated with a pre-treating liquid prior to being paste-coated, spray-coated or dip-coated with the highly-radiative material, so as to further improve adhesion between the highly-radiative material and the substrate.
- The pre-treating liquid is an aqueous solution containing polyamine curing agent PA80 (PA80 adhesive) or an alkali metal silicate.
- Solid components in the highly-radiative material are hyperfinely processed, so as to enable the particle size to be 20-900 nm, and to improve adhesion between the highly-radiative material and the substrate.
- Surfaces of the heat retainer for the heat exchanger of the invention are coated with a coating layer of highly-radiative material whose emissivity is greater than that of the substrate material of which the core of the heat retainer is made; the heat absorption and emission capability of the heat exchanger is increased, which improves heat absorption and emission of the heat retainer, and increases the heat storage capacity.
- Meanwhile, increasing the heat exchange efficiency of the heat exchanger also saves energy. Particularly, when a checker brick of a hot blast stove of a blast furnace is coated with the highly radiative material, temperature inside the hot blast stove is uniformly distributed, and the heat storage capacity is notably increased. This raises the temperature of the circulating air, shortens the startup period, and reduces the gas amount and air flow. Reduction of the gas amount and the air flow further saves energy, lowers the requirement of a wind turbine, and reduces the overall cost of devices. The coating layer of the heat retainer also operates to protect the substrate of which the core of the heat retainer is made. When the surfaces of the heat retainer of a steel-rolling regenerative furnace are coated with the highly-radiative material, temperature inside the heat retainer increases significantly.
-
FIG. 1 is a diagram illustrating a honeycomb-shaped heat retainer with a coating layer for a heat exchanger according to one embodiment of the invention; -
FIG. 2 is a diagram illustrating a honeycomb-shaped heat retainer with a coating layer for a heat exchanger according to another embodiment of the invention; -
FIG. 3 is a diagram illustrating a fin-shaped heat retainer with a coating layer for a heat exchanger according to another embodiment of the invention; -
FIG. 4 is a partial cross-sectional view illustrating a plate-shaped heat retainer with a coating layer for a heat exchanger according to yet another embodiment of the invention; -
FIG. 5 is a partial cross-sectional view illustrating a ball-shaped heat retainer with a coating layer for a heat exchanger according to yet another embodiment of the invention; -
FIG. 6 is a diagram illustrating an elliptical heat retainer with a coating layer for a heat exchanger according to yet another embodiment of the invention; and -
FIG. 7 is a partial cross-sectional view illustrating a non-metal heat retainer with a coating layer for a heat exchanger according to yet another embodiment of the invention. - In the drawings: 1-circular inner hole; 2-highly-radiative material coating layer; 3-circuilar inner hole; 4-highly-radiative material coating layer; 5-rectangular inner hole; 6-highly-radiative material coating layer; 7-highly-radiative material coating layer; 8-substrate; 9-heat exchange surface; 10-substrate; 11-highly radiative material coating layer; 12-heat exchange surface; 13-substrate; 14-highly radiative material coating layer; 15-heat exchange surface.
- As shown in
FIG. 1 , a heat retainer used for a hot blast stove of a blast furnace is a checker brick. The checker brick (heat retainer) has a plurality of circular inner holes 1, and all surfaces (comprising those of the inner holes) of the check brick (heat retainer) are coated with a coating layer of a highlyradiative material 2 whose thickness is 0.02 mm. A substrate of the heat retainer is a refractory material, and the highly-radiativematerial coating layer 2 is a highly-radiative material whose emissivity in the far-infrared region is greater than that of a substrate material of the heat retainer. The highly-radiativematerial coating layer 2 comprises by weight: 110 parts of Cr2O3, 80 parts of clays, 90 parts of montmorillonites, 300 parts of brown corundums, 100 parts of silicon carbides, 400 parts of PA80 adhesive and 100 parts of water. These components are hyperfinely processed, so as to enable the particle size to be in the 25-700 nm range. Compared with existent heat exchangers, the heat exchanger of this embodiment saves over 20% of energy. - As described in embodiment 1, except that differences are as follows: the cross section of the honeycomb-shaped heat retainer is rectangular; and the highly-radiative material coating layer is disposed within a plurality of circular inner holes 3 (as shown in
FIG. 2 ). - As shown in
FIG. 3 , the heat retainer for a heat exchange is fin-shaped. A plurality of rectangular inner holes 5 are disposed in the heat retainer, and all surfaces (comprising surfaces of the inner holes) of the heat retainer for the heat exchanger are paste-coated with a highly-radiative material coating layer 6 whose thickness is 0.03 mm. A substrate of the heat retainer is a ceramic material, and the highly-radiativematerial coating layer 4 is a highly-radiative material whose far-infrared emissivity is greater than that of a substrate material of the heat retainer. The highly-radiative material comprises by weight: 15 parts of zirconium oxide, 8 parts of Cr2O3, 10 parts of TiO2, 2 parts of montmorillonites, 15 parts of Al2O3, 10 parts of carborundums, 30 parts of PA80 adhesives, and 10 parts of water. Compared with existent heat exchangers, the heat efficiency of the heat exchanger according to this embodiment is improved by over 10%. - As shown in
FIG. 4 , the heat retainer for use in a heat exchanger according to this embodiment is plate-shaped; and the surfaces of the heat retainer are paste-coated with a coating layer 7 made of a highly-radiative material and whose thickness is 0.1 mm. A substrate 8 of the heat retainer is an iron and a steel material, and the highly-radiative material is a highly-radiative material whose far-infrared emissivity is greater than that of the substrate material. The highly-radiative material comprises by weight: 60 parts of Cr2O3, 200 parts of brown corundums, 50 parts of clays, 30 parts of montmorillonites, 200 parts of silicon carbides, 200 parts of hydrated sodium silicate gels, and 100 parts of water. The outer surface of the coating layer 7 is theheat exchange surface 9. The surfaces of the heat retainer are coated with a pre-treating liquid prior to being paste-coated with the highly-radiative material. The pre-treating liquid comprises 10% aqueous solution (by weight) of hydrated sodium silicate gels. Compared with existent heat exchangers, the heating efficiency of the heat exchanger of this embodiment is improved by over 10%. - As shown in
FIG. 5 , the heat retainer for a heat exchanger is ball-shaped, and the surfaces of the heat retainer are paste-coated with a highly-radiative material resulting in a coating layer 11 whose thickness is 2 mm. An outer surface of the coating layer 7 is theheat exchange surface 12. Asubstrate 10 of the heat retainer is a refractory material, and the highly-radiative material forming the coating layer 11 is a highly-radiative material whose far-infrared emissivity is greater than that of a substrate material. The highly-radiative material comprises by weight: 5 parts of zirconium oxide, 10 parts of silicon carbides, 5 parts of titanium, 3 parts of clays, 40 parts of brown corundums, 10 parts of aluminum hydroxides, 15 parts of phosphoric acid, and 12 parts of water. Compared with existent heat exchangers, the relative temperature of the heat exchanger of this embodiment is increased by over 15° C. The heat retainer according to this embodiment is applicable for use as a regenerative furnace, in which the ball-shaped heat retainer exchanges heat within a heat accumulator being part of the regenerative furnace. - As described in embodiment 5, except that the heat retainer for a heat exchanger is elliptical in shape (as shown in
FIG. 6 ). - The surfaces of a ball-shaped heat retainer are spray-coated with a highly-radiative material giving rise to a coating layer whose thickness is 2.5 mm. The coating layer comprises by weight: 15 parts of silicon carbides, 2 parts of brown corundums, 35 parts of zirconias, 2 parts of montmorillonites, 6 parts of chromium oxides, 27 parts of PA80 adhesives and parts of 13 water.
- The surfaces of the heat retainer are coated with pre-treating liquid prior to being spray-coated with the highly-radiative material, The pre-treating liquid comprises 10% aqueous solution (by weight) of PA80 adhesive.
- As shown in
FIG. 7 , the surfaces of aceramic substrate 13 of a heat retainer are paste-coated with a highly-radiative material resulting in acoating layer 14 whose thickness is 3 mm. The outer surface of thecoating layer 14 is theheat exchange surface 15. The coating layer comprises by weight: 60 parts of Fe2O3, 5 parts of zirconias, 20 parts of hydrated sodium silicate gels and 15 parts of water. The surfaces of the heat retainer are coated with a pre-treating liquid prior to being paste-coated with the highly-radiative material coating layer. the pre-treating liquid comprising a 8% by weight aqueous solution of hydrated sodium silicate gels. - The highly-radiative material forming a coating layer on the heat retainer may be freely selected. The above embodiments are intended to be illustrative only, and are not meant to limit the invention.
Claims (9)
1. A heat retainer for a heat exchanger the heat retainer having a coating layer, wherein at least one surface of said heat retainer is coated with a highly-radiative material forming said coating layer.
2. The heat retainer of claim 1 , wherein a thickness of said coating layer is 0.02-3 mm.
3. The heat retainer of claim 1 , wherein an emissivity of said highly-radiative material is greater than that of a substrate material of which the heat retainer is made.
4. The heat retainer of claim 1 , wherein the heat retainer is in the shape of a honeycomb, a fin, a ball, an ellipse or a plate.
5. The heat retainer of claim 1 , comprising one or a plurality of inner holes disposed within said heat retainer.
6. The heat retainer of claim 5 , wherein the inner hole may be circular, square, rectangular, rhombic, hexagonal or polygonal.
7. The heat retainer of claim 1 , wherein a cross section of the heat retainer is circular, square, rectangular, rhombic, hexagonal or polygonal.
8. The heat retainer of claim 1 , prepared by coating surfaces of the substrate of the heat retainer with a pre-treating liquid and then paste-coating, spray-coating or dip-coated with the highly-radiative material to form a coating layer, wherein the pre-treating liquid is an aqueous solution of the polyamine curing agent PA80 or an alkali metal silicate.
9. The heat retainer of claim 1 , wherein the substrate of the heat retainer is made of a refractory material, a ceramic material, an iron and a steel material.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200510043838.X | 2005-06-17 | ||
CNB200510043838XA CN100412495C (en) | 2005-06-17 | 2005-06-17 | Heat exchanger with covering layer |
PCT/CN2005/002010 WO2006133608A1 (en) | 2005-06-17 | 2005-11-25 | A heat storage body with a coated layer for heat exchanging |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080128121A1 true US20080128121A1 (en) | 2008-06-05 |
Family
ID=35349426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/815,488 Abandoned US20080128121A1 (en) | 2005-06-17 | 2005-11-15 | Heat Storage Device with Heat-Radiative Coating |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080128121A1 (en) |
JP (1) | JP5145215B2 (en) |
KR (1) | KR20080028914A (en) |
CN (1) | CN100412495C (en) |
DE (1) | DE112005003606T5 (en) |
RU (1) | RU2387938C2 (en) |
WO (1) | WO2006133608A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120001438A1 (en) * | 2010-06-30 | 2012-01-05 | Mitsubishi Heavy Industries, Ltd. | Wind power generator |
US20130168470A1 (en) * | 2008-10-01 | 2013-07-04 | John W. Olver | Burner Tips |
US20130192792A1 (en) * | 2012-01-31 | 2013-08-01 | Burton Krakow | Thermal Energy Storage Systems and Methods |
US9210832B2 (en) | 2012-08-13 | 2015-12-08 | Asustek Computer Inc. | Thermal buffering element |
WO2016050732A1 (en) * | 2014-09-29 | 2016-04-07 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Thermal storage unit |
WO2016134974A1 (en) * | 2015-02-26 | 2016-09-01 | Dürr Systems GmbH | Molded parts for controlling the temperature of a fluid and heat exchanger composed of said molded parts |
US10234214B2 (en) * | 2015-08-05 | 2019-03-19 | Tvk Corporation | Heat storage body |
EP4220031A1 (en) * | 2017-06-22 | 2023-08-02 | Kelvin Thermal Energy, Inc. | Stabilized thermal energy output system |
JP7507141B2 (en) | 2021-12-27 | 2024-06-27 | 東京窯業株式会社 | Regenerative burner device, heat storage body, and method for manufacturing heat storage body |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101737969A (en) * | 2008-11-05 | 2010-06-16 | 上海神曦太阳能科技有限公司 | Solar energy heat storage device and preparation method thereof |
CN104654864A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Honeycomb block for chemical heat storage |
CN104654872A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Honeycomb blocks for high temperature heat energy and manufacturing method of same |
CN104654870A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Solid granule blocks for high temperature heat transferring |
CN104650820A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Formula of chemical heat storage material for heat transfer |
CN104650821A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Solid particle blocks for chemical heat storage |
DE102015117256B4 (en) * | 2015-10-09 | 2024-05-29 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Vehicle component and method for producing a vehicle component |
CN105651092A (en) * | 2016-03-29 | 2016-06-08 | 东莞市兆荣节能科技有限公司 | Assembled phase-change cold storage ball |
WO2017195270A1 (en) * | 2016-05-10 | 2017-11-16 | 三菱電機株式会社 | Heat sink |
JP6680668B2 (en) * | 2016-12-19 | 2020-04-15 | 東京窯業株式会社 | Method for manufacturing heat storage body |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3252506A (en) * | 1965-07-20 | 1966-05-24 | Chrysler Corp | Rotary heat exchanger |
US3289743A (en) * | 1963-08-02 | 1966-12-06 | Nikex Nehezipari Kulkere | Isothermic heat exchangers |
US3339627A (en) * | 1965-03-22 | 1967-09-05 | Philips Corp | Regenerator |
US4111189A (en) * | 1977-01-03 | 1978-09-05 | Cities Service Company | Combined solar radiation collector and thermal energy storage device |
US4249386A (en) * | 1978-06-16 | 1981-02-10 | Smith Otto J | Apparatus for providing radiative heat rejection from a working fluid used in a Rankine cycle type system |
US5992504A (en) * | 1994-06-17 | 1999-11-30 | Ngk Insulators, Ltd. | Honeycomb regenerator |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4936361B1 (en) * | 1969-03-08 | 1974-09-30 | ||
JPS5598958U (en) * | 1978-12-28 | 1980-07-09 | ||
JPS55158135A (en) * | 1979-05-29 | 1980-12-09 | Asahi Glass Co Ltd | Glass melting method and its furnace |
JPS5622639A (en) * | 1979-07-31 | 1981-03-03 | Asahi Glass Co Ltd | Regenerator |
JPS5948876B2 (en) * | 1980-03-11 | 1984-11-29 | 三菱電機株式会社 | Heat sink surface treatment method |
JPS60251186A (en) * | 1984-05-28 | 1985-12-11 | 橋本 卓彦 | Heat resistant sintered body with ceramic infrared high effeciency radiation layer |
CN2149596Y (en) * | 1992-07-22 | 1993-12-15 | 鞍山钢铁公司 | Porous radiation brick for smoke mouth of soaking furnace |
CN2141824Y (en) * | 1992-09-21 | 1993-09-08 | 鞍山钢铁公司 | Heat-collecting radiation perforated hollow brick |
JP2003100311A (en) * | 2001-09-25 | 2003-04-04 | Hokkaido Technology Licence Office Co Ltd | Heat absorber, heat accumulator and manufacturing methods of these |
CN1168787C (en) * | 2002-03-01 | 2004-09-29 | 迟贵庆 | Far infrared energy saving paint |
DE10234771B4 (en) * | 2002-07-30 | 2004-08-26 | Rauschert Verfahrenstechnik Gmbh | Heat storage bed for regenerative heat transfer |
CN2559935Y (en) * | 2002-08-05 | 2003-07-09 | 陈明 | All-weather vacuum heat collecting tube |
JP2006517507A (en) * | 2003-01-13 | 2006-07-27 | チョースン リフラクトリーズ カンパニー リミテッド | Insulating bricks installed in industrial furnaces and methods for producing the same |
CN1285876C (en) * | 2003-12-18 | 2006-11-22 | 周惠敏 | Construction process for spraying paint of high-temperature furnace internal wall and water-cooled wall surface |
CN1235990C (en) * | 2003-12-18 | 2006-01-11 | 周惠敏 | High-temperature far infrared paint and preparing method thereof |
CN2793669Y (en) * | 2005-06-17 | 2006-07-05 | 周惠敏 | High-efficient and energy-saving heat exchanger |
-
2005
- 2005-06-17 CN CNB200510043838XA patent/CN100412495C/en active Active
- 2005-11-15 US US11/815,488 patent/US20080128121A1/en not_active Abandoned
- 2005-11-25 KR KR1020087000465A patent/KR20080028914A/en active Search and Examination
- 2005-11-25 WO PCT/CN2005/002010 patent/WO2006133608A1/en active Application Filing
- 2005-11-25 JP JP2008516105A patent/JP5145215B2/en active Active
- 2005-11-25 DE DE112005003606T patent/DE112005003606T5/en not_active Withdrawn
- 2005-11-25 RU RU2007148680/06A patent/RU2387938C2/en active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3289743A (en) * | 1963-08-02 | 1966-12-06 | Nikex Nehezipari Kulkere | Isothermic heat exchangers |
US3339627A (en) * | 1965-03-22 | 1967-09-05 | Philips Corp | Regenerator |
US3252506A (en) * | 1965-07-20 | 1966-05-24 | Chrysler Corp | Rotary heat exchanger |
US4111189A (en) * | 1977-01-03 | 1978-09-05 | Cities Service Company | Combined solar radiation collector and thermal energy storage device |
US4249386A (en) * | 1978-06-16 | 1981-02-10 | Smith Otto J | Apparatus for providing radiative heat rejection from a working fluid used in a Rankine cycle type system |
US5992504A (en) * | 1994-06-17 | 1999-11-30 | Ngk Insulators, Ltd. | Honeycomb regenerator |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130168470A1 (en) * | 2008-10-01 | 2013-07-04 | John W. Olver | Burner Tips |
US20120001438A1 (en) * | 2010-06-30 | 2012-01-05 | Mitsubishi Heavy Industries, Ltd. | Wind power generator |
US8308438B2 (en) * | 2010-06-30 | 2012-11-13 | Mitsubishi Heavy Industries, Ltd | Wind power generator |
US20130192792A1 (en) * | 2012-01-31 | 2013-08-01 | Burton Krakow | Thermal Energy Storage Systems and Methods |
US10267571B2 (en) * | 2012-01-31 | 2019-04-23 | University Of South Florida | Thermal energy storage systems and methods |
US9210832B2 (en) | 2012-08-13 | 2015-12-08 | Asustek Computer Inc. | Thermal buffering element |
WO2016050732A1 (en) * | 2014-09-29 | 2016-04-07 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Thermal storage unit |
US11384984B2 (en) | 2014-09-29 | 2022-07-12 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Thermal storage unit |
WO2016134974A1 (en) * | 2015-02-26 | 2016-09-01 | Dürr Systems GmbH | Molded parts for controlling the temperature of a fluid and heat exchanger composed of said molded parts |
US10234214B2 (en) * | 2015-08-05 | 2019-03-19 | Tvk Corporation | Heat storage body |
EP4220031A1 (en) * | 2017-06-22 | 2023-08-02 | Kelvin Thermal Energy, Inc. | Stabilized thermal energy output system |
JP7507141B2 (en) | 2021-12-27 | 2024-06-27 | 東京窯業株式会社 | Regenerative burner device, heat storage body, and method for manufacturing heat storage body |
Also Published As
Publication number | Publication date |
---|---|
CN1696596A (en) | 2005-11-16 |
KR20080028914A (en) | 2008-04-02 |
RU2007148680A (en) | 2009-07-27 |
CN100412495C (en) | 2008-08-20 |
RU2387938C2 (en) | 2010-04-27 |
WO2006133608A1 (en) | 2006-12-21 |
JP2008544201A (en) | 2008-12-04 |
JP5145215B2 (en) | 2013-02-13 |
DE112005003606T5 (en) | 2008-04-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20080128121A1 (en) | Heat Storage Device with Heat-Radiative Coating | |
CN103864442B (en) | High emissivity high-temperature nano ceramic coating | |
MX2011006066A (en) | Regenerative air preheater design to reduce cold end fouling. | |
CN1775870A (en) | Anticorrosive energy-saving coating based on infrared radiating body | |
WO2017177894A1 (en) | Heat transfer enhancement mesh-honeycombed bulge and kiln | |
CN107032735A (en) | A kind of boiler insulating moulding coating, preparation method and construction method | |
CN2793669Y (en) | High-efficient and energy-saving heat exchanger | |
CN110132018A (en) | A kind of periodic high temperature waste-heat recovery device | |
CN202393208U (en) | Domestic ceramic kiln | |
CN104744973B (en) | A kind of effective high radiation ceramic coating of heating-furnace and its preparation, application method | |
CN204461171U (en) | Ceramic honeycomb heat storage plate | |
CN204027403U (en) | A kind of convection type flue gas heat exchange tube | |
CN205537264U (en) | Modular ceramic honey comb heat accumulator | |
CN201897420U (en) | Heat accumulator structure of heat-accumulation heating furnace | |
CN103134376A (en) | Heat transfer tube | |
CN207035936U (en) | A kind of cooling tower anti-corrosion structure | |
CN207743652U (en) | A kind of MPP power pipes | |
CN202350519U (en) | Heat transfer component of industrial furnace | |
CN207229943U (en) | A kind of steel sleeve steel insulating tube with air sac thermal insulating layer | |
CN205803555U (en) | The belt type roasting machine of energy-conserving and environment-protective | |
CN207317563U (en) | A kind of flue gas condensing tower | |
CN205383900U (en) | High temperature resistant fever board that holds of piece formula | |
CN102747200A (en) | Annealing furnace heat-preserving furnace wall | |
CN201561660U (en) | Thermal energy recovery heat exchanger | |
CN201463558U (en) | Low thermal conduction and energy saving kiln wall |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION |