CN106032941A - Vacuum heat collector - Google Patents
Vacuum heat collector Download PDFInfo
- Publication number
- CN106032941A CN106032941A CN201510117999.2A CN201510117999A CN106032941A CN 106032941 A CN106032941 A CN 106032941A CN 201510117999 A CN201510117999 A CN 201510117999A CN 106032941 A CN106032941 A CN 106032941A
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- CN
- China
- Prior art keywords
- housing
- heat
- collecting tube
- heat collector
- thermal
- 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.)
- Pending
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Thermal Insulation (AREA)
Abstract
The invention discloses a vacuum heat collector comprising a housing, a U-shape heat collecting tube, and a heat absorbing plate; the housing comprises a facing-light surface and a back-light surface and is provided with a vacuum suction nozzle; the U-shape heat collecting tube is fixedly installed inside the housing; the heat absorbing plate is installed between the facing-light surface of the housing and the U-shape heat collecting tube; the side, facing the facing-light surface of the housing of the heat absorbing plate is coated with selective absorbing coating, the other side of the heat absorbing plate is tightly fitted to the U-shape heat collecting tube; an enclosed vacuum environment can be formed inside the housing; sunshine irradiates on the heat absorbing plate through the facing-light surface of the housing and the heat absorbed by the heat absorbing plate can be used for heating heat transferring medium inside the U-shape heat collecting tube. The heat collector is provided with a heat absorbing plate which is coated with selective absorbing coating having high solar absorption efficiency and low reflection efficiency; the surface area of the heat absorbing plate is large and the heat absorbed by the heat absorbing plate can be quickly transferred to the U-shape heat collecting tube; a heat radiation shielding layer is used for reducing the heat radiation loss of the heat collector.
Description
Technical field
The present invention relates to technical field of solar, be specifically related to a kind of U-shaped vacuum heat collection pipe.
Background technology
In solar energy heating utilization, it is important to the radiation of the sun can be converted to heat energy.Due to the sun
Can ratio relatively decentralized, it is necessary to manage it to put together.Solar thermal collector is used to absorb solar radiation
It is allowed to be converted to heat energy and pass to the device of thermal medium, although it is not the end that region be directly facing consumer
End product, but solar thermal collector is the critical component forming various Solar Energy Heat Utilization System.Nothing
Opinion be solar water heater, solar cooker, active solar house, solar energy greenhouse or solar energy drying,
Solar industry heating, solar energy thermal-power-generating etc. all be unable to do without solar thermal collector, are all with solar energy
Heat collector is as the power of system or core component.Common are plate, vacuum tube type and gather
Light type solar thermal collector.
Vacuum tube type solar energy heat collector usually uses all-glass vacuum tube type thermal-collecting tube, by inside and outside two
Individual glass tubing is constituted, and forms vacuum chamber between inner and outer pipe, and the outer surface of inner tube is provided with solar energy and selects
Property absorber coatings, transmission heat transfer medium (water) in inner tube.Prior art is often arranged in glass tubing
The thermal-collecting tube of many parallel connections, these thermal-collecting tubes are parallel to collecting tray, by reducer union and female Guan Lian
Connect.Generally, thermal-collecting tube uses U-shaped tubule, and these U-shaped tubule surfaces are mostly coated with selectivity and inhale
Receive coating, complex manufacturing technology, and the many single u-shaped tubule taked to obtain bigger endotherm area is also
The mode of connection makes the structure of thermal-collecting tube become complicated, make, installation cost of a relatively high.
Therefore, this area is in the urgent need to researching and developing a kind of simple in construction, making aspect, the having of low cost
High heat absorption efficiency, low thermal emissivity, the solar energy heat collection pipe of elevated operating temperature.
Summary of the invention
It is an object of the invention to provide a kind of simple in construction, making aspect, low cost, life-span length, collection
The heat collector that the thermal efficiency is high.
For achieving the above object, the invention provides a kind of heat collector, described heat collector includes: housing,
Described housing includes side to light and shady face, and described housing is provided with vacuum pumping mouth；U-shaped thermal-collecting tube, institute
State U-shaped thermal-collecting tube to be fixedly mounted in described housing；Absorber plate, described absorber plate is arranged on described housing
Side to light and described U-shaped thermal-collecting tube between, and the one of the side to light towards described housing of described absorber plate
Side is coated with coating for selective absorption, and the opposite side of described absorber plate closely pastes with described U-shaped thermal-collecting tube
Close；Described enclosure interior can form airtight vacuum environment, the sunlight described side to light by described housing
Being radiated on described absorber plate, the heat that described absorber plate absorbs is for heating the biography in described U-shaped thermal-collecting tube
Thermal medium.
In a preferred embodiment, described housing is in cylindrical or elliptical cylinder-shape, described cylinder or cylindroid
The housing of shape is divided into side to light and two parts of shady face by by the plane of its center axis, wherein said meets
Bright finish is transparent.
In a preferred embodiment, the lateral wall of described side to light is coated with anti-reflection film, and described anti-reflection film is used for
Improve the impingement rate of sunlight；And/or
The medial wall of described shady face is provided with thermal radiation shield, and described thermal radiation shield is used for reducing described
The thermal radiation loss of heat collector.
In a preferred embodiment, described thermal radiation shield is the aluminum of the medial wall being fixed on described shady face
Plate or silver plate or corrosion resistant plate of aluminizing；Or
Described thermal radiation shield is the metallic reflector of the medial wall being plated in described shady face.
In a preferred embodiment, the medial wall of described shady face is provided with 1 to 3 layer of thermal radiation shield.
In a preferred embodiment, described metallic reflector is native silver or aluminium foil.
In a preferred embodiment, described U-shaped thermal-collecting tube is elongated U-tube, and described U-tube tool
There is the plane fitted with described absorber plate, thus increase connecing between described U-shaped thermal-collecting tube and described absorber plate
Contacting surface is amassed, and improves heat transfer efficiency.
In a preferred embodiment, described housing is glass tubing, and described U-shaped thermal-collecting tube is metal tube, institute
State metal tube to be connected by cutting down with glass tubing.
In a preferred embodiment, described housing is glass tubing, and described U-shaped thermal-collecting tube is glass tubing.
In a preferred embodiment, described housing is made up of Pyrex.
In a preferred embodiment, coated by the side towards the side to light of described housing of described absorber plate
Coating for selective absorption by semiconductor absorber-metallic reflection tandem surface, metal-dielectric composite,
Dielectric-metallic interference stack surface or intrinsic selective absorption surface or micro-uneven surface etc. are constituted.
In a preferred embodiment, described coating for selective absorption by metallic reflector be formed at metal
Semiconductor absorption layer on reflecting layer is constituted, and wherein, described metallic reflection layer material is Ge, quasiconductor
The material of absorbed layer is Al.
In a preferred embodiment, phase is sealed in described hull outside with the U-shaped thermal-collecting tube in described housing
Pipeline even is enclosed with insulation material, or described pipeline is vacuum heat-preserving tube.
In a preferred embodiment, the evaporable of vacuum in maintaining housing and non-is filled and presented in described housing
Evaporable air-absorbing agent.
In a preferred embodiment, described absorber plate is connected by support and described U-shaped thermal-collecting tube are fixing,
Or described absorber plate is bonded together with described U-shaped thermal-collecting tube by binding agent.
In a preferred embodiment, the external diameter of described U-shaped tubule is 5-10mm, preferably 8mm,
And/or
The pipe thickness of described U-shaped tubule is 0.3mm-0.7mm, preferably 0.5mm.
It is provided with and absorber plate in the heat collector of the present invention, absorber plate is coated with sun absorption efficiency height, reflection
Inefficient coating for selective absorption, the surface area of absorber plate is relatively big, and the heat that absorber plate absorbs can be rapid
Passing to U-shaped thermal-collecting tube, thermal radiation shield, described thermal radiation shield is for reducing described heat collector
Thermal radiation loss.And the heat collector of the present invention can be provided only with a U-shaped thermal-collecting tube so that the knot of heat collector
Structure is simplified, processing technology and low cost and easy for installation.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the vacuum collector of the embodiment of the present invention；With
Fig. 2 is the generalized section of the vacuum collector of the embodiment of the present invention.
Detailed description of the invention
Below with reference to accompanying drawing, presently preferred embodiments of the present invention is described in detail, in order to become apparent from understanding this
The objects, features and advantages of invention.It should be understood that embodiment shown in the drawings is not to model of the present invention
The restriction enclosed, and simply to illustrate that the connotation of technical solution of the present invention.
As illustrated in fig. 1 and 2, the heat collector of the present invention includes housing 1, U-shaped thermal-collecting tube 2, absorber plate 3
With drive end bearing bracket 4, its middle shell includes side to light and shady face, and housing is provided with vacuum pumping mouth 6；U-shaped
Thermal-collecting tube 2 is fixedly mounted in housing, and the import and export end of U-shaped thermal-collecting tube 2 with seal sleeve pipe 5
Being connected, this sealing shroud seal of tube ground is through drive end bearing bracket 4；Absorber plate 3 is arranged on side to light and the U of housing 1
Between type thermal-collecting tube, and the side towards the side to light of housing of absorber plate is coated with coating for selective absorption,
The opposite side of absorber plate is closely fitted with U-shaped thermal-collecting tube.
In the heat collector of the present invention, housing 1 is glass tubing, and U-shaped thermal-collecting tube 2 is metal tube or glass tubing.
It is preferred that housing 1 is made up of Pyrex, U-shaped thermal-collecting tube 2 is metal tube, between with cutting down connection.
In the heat collector of the present invention, housing 1 is glass tubing, and U-shaped thermal-collecting tube 2 is glass tubing.It is preferred that
Housing 1 is made up of Pyrex.
The housing 1 of heat collector seals, and enclosure interior can be evacuated by vacuum pumping mouth 6.Sunlight leads to
The side to light crossing housing is radiated on absorber plate 3, and the heat that absorber plate 3 absorbs is used for heating U-shaped thermal-collecting tube
Interior heat transfer medium, thus realize heat collector and collect the effect of solar energy.
Heat collector housing 1 shown in the drawings is cylindrical, and this cylinder heat collector housing is by by its central shaft
The plane of line is divided into side to light and two parts of shady face, and wherein side to light is transparent.It is preferred that at shell
The lateral wall of body side to light is coated with anti-reflection film, thus improves the impingement rate of sunlight, improves U further
The operating temperature of type thermal-collecting tube.
It is provided with thermal radiation shield in the medial wall of housing 1 shady face.This thermal radiation shield can be solid
It is scheduled on aluminium sheet or the silver plate of the medial wall of shady face or corrosion resistant plate of aluminizing, it is also possible to be plated in shady face interior
The metallic reflector of sidewall, such as native silver or aluminium foil.Thermal radiation shield can reduce the heat radiation of heat collector
Loss, thus improve the operating temperature of U-shaped thermal-collecting tube 2.It is preferred that the medial wall of shady face is provided with 1
To 3 layers of thermal radiation shield.
Being provided only with an elongated U-shaped thermal-collecting tube 2 in the present invention, the external diameter of this U-shaped tubule is 5-10mm,
Preferably 8mm.The pipe thickness of U-shaped tubule is 0.3mm-0.7mm, preferably 0.5mm.
Although it is not shown in the drawings, it is preferred that U-tube has and the plane of absorber plate laminating, the most permissible
Increase the contact area between U-shaped thermal-collecting tube and absorber plate, improve heat transfer efficiency.Absorber plate can pass through support
Fix with U-shaped thermal-collecting tube and be connected, it is possible to be bonded together with U-shaped thermal-collecting tube by binding agent, this enforcement
In example, the size of described absorber plate is 134mm × 1880mm.
Absorber plate can be selected for partly leading towards the coating for selective absorption coated by the side of the side to light of housing
Body absorption-metallic reflection tandem surface, metal-dielectric composite, dielectric-metallic interference stack
The material structures such as surface, intrinsic selective absorption surface or micro-uneven surface are constituted.Semiconductor absorber-gold
Belong to reflection tandem surface and can be selected for the materials such as Si/Ge/-Al/Au/Cu/Al/Pt/W/Ni.Metal-dielectric is multiple
Condensation material can be selected for Pt-Al2O3, Ni-SiO2, Ni/Co/Mo/Au/W/Pt-Al2O3, Al-AlN；
The materials such as Mo-MoO2 or W-WO2.Dielectric-metallic interference stack surface can be selected for ZrB2,
The materials such as Mo/Co/Cr-Cr2O3, Mo-AlN or Au-TiO2/MgO.Intrinsic Gettering selective absorbing
The materials such as surface W, HfC or Cu2S.Micro-uneven surface can be selected for Cu, Ni, SS, Re or W
Deng material.In the present embodiment, coating for selective absorption by metallic reflector be formed at metallic reflector
On semiconductor absorption layer constitute.Metallic reflection layer material is Ge, and the material of semiconductor absorption layer is
Al.It is plated in the coating for selective absorption of U-shaped vacuum heat-collecting tube outer surface for absorbing sunlight visible ray,
Reduce infra-red radiation, improve the absorption efficiency to sunlight, reduce radiation efficiency, thus improve U-shaped
The operating temperature of thermal-collecting tube.
It is preferred that in order to maintain the vacuum in heat collector housing, can fill and present in housing for maintaining housing
The evaporable of interior vacuum and nonevaporable getter.Additionally, insulation can be wrapped up in the outside sealing sleeve pipe 5
Material, or sheathed vacuum heat-preserving sleeve pipe, to reduce thermal loss, improve the work efficiency of heat collector.
It is provided with and absorber plate in the heat collector of the present invention, absorber plate is coated with sun absorption efficiency height, reflection
Inefficient coating for selective absorption, the surface area of absorber plate is relatively big, and the heat that absorber plate absorbs can be rapid
Passing to U-shaped thermal-collecting tube, thermal radiation shield, thermal radiation shield damages for the heat radiation reducing heat collector
Lose.And the heat collector of the present invention can be provided only with a U-shaped thermal-collecting tube so that the structure of heat collector is simplified,
Processing technology and low cost and easy for installation.
Below presently preferred embodiments of the present invention has been described in detail, it is understood that reading this
After bright above-mentioned teachings, the present invention can be made various changes or modifications by those skilled in the art.
These equivalent form of values fall within the application appended claims limited range equally.
Claims (10)
1. a heat collector, it is characterised in that described heat collector includes:
Housing, described housing includes side to light and shady face, and described housing is provided with vacuum pumping mouth；
U-shaped thermal-collecting tube, described U-shaped thermal-collecting tube is fixedly mounted in described housing；
Absorber plate, described absorber plate is arranged between the side to light of described housing and described U-shaped thermal-collecting tube,
And the side towards the side to light of described housing of described absorber plate is coated with coating for selective absorption, described suction
The opposite side of hot plate is closely fitted with described U-shaped thermal-collecting tube；Wherein
Described enclosure interior can form airtight vacuum environment, the sunlight described side to light by described housing
Being radiated on described absorber plate, the heat that described absorber plate absorbs is for heating the biography in described U-shaped thermal-collecting tube
Thermal medium.
Heat collector the most according to claim 1, it is characterised in that described housing is cylindrical or ellipse
Cylinder, the housing of described cylinder or elliptical cylinder-shape by by the plane of its center axis be divided into side to light and
Two parts of shady face.
Heat collector the most according to claim 1, it is characterised in that the lateral wall of described side to light is coated with
Being covered with anti-reflection film, described anti-reflection film is for improving the impingement rate of sunlight；And/or
The medial wall of described shady face is provided with thermal radiation shield, and described thermal radiation shield is used for reducing described
The thermal radiation loss of heat collector.
Heat collector the most according to claim 3, it is characterised in that described thermal radiation shield is solid
It is scheduled on aluminium sheet or the silver plate of the medial wall of described shady face or corrosion resistant plate of aluminizing；Or
Described thermal radiation shield is the metallic reflector of the medial wall being plated in described shady face.
Heat collector the most according to claim 1, it is characterised in that described housing is glass tubing, institute
Stating U-shaped thermal-collecting tube is metal tube, passes through to cut down to be connected between described metal tube and glass tubing.
Heat collector the most according to claim 1, it is characterised in that described housing and U-shaped thermal-collecting tube
It is glass tubing.
Heat collector the most according to claim 1, it is characterised in that described absorber plate towards described
Coating for selective absorption coated by the side of the side to light of housing is by semiconductor absorber-metallic reflection tandem
Surface, metal-dielectric composite, dielectric-metallic interference stack surface or intrinsic selective absorbing
Surface or micro-uneven surface etc. are constituted.
Heat collector the most according to claim 1, it is characterised in that in described hull outside with described
U-shaped thermal-collecting tube in housing seals the pipeline being connected and is enclosed with insulation material, or described pipeline is that vacuum is protected
Wen Guan.
Heat collector the most according to claim 1, it is characterised in that fill and present for tieing up in described housing
Hold evaporable and the nonevaporable getter of vacuum in housing.
Heat collector the most according to claim 1, it is characterised in that described absorber plate by support with
Described U-shaped thermal-collecting tube is fixing to be connected, or described absorber plate is glued with described U-shaped thermal-collecting tube by binding agent
It is combined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510117999.2A CN106032941A (en) | 2015-03-17 | 2015-03-17 | Vacuum heat collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510117999.2A CN106032941A (en) | 2015-03-17 | 2015-03-17 | Vacuum heat collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106032941A true CN106032941A (en) | 2016-10-19 |
Family
ID=57150957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510117999.2A Pending CN106032941A (en) | 2015-03-17 | 2015-03-17 | Vacuum heat collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106032941A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766247A (en) * | 2016-11-25 | 2017-05-31 | 东南大学 | A kind of metal type vacuum heat collection pipe |
| CN106907872A (en) * | 2017-04-17 | 2017-06-30 | 安徽晶润新能源有限公司 | Solar energy vacuum heat collecting device |
| CN106949642A (en) * | 2017-04-14 | 2017-07-14 | 安徽晶润新能源有限公司 | The high solar thermal collector of heat exchange efficiency |
| CN108375226A (en) * | 2016-11-02 | 2018-08-07 | 益科博能源科技（上海）有限公司 | Non-tracking formula solar thermal collector |
| CN111998547A (en) * | 2020-09-01 | 2020-11-27 | 宁波盾科新材料有限公司 | High-efficiency solar heat collecting pipe and manufacturing method thereof |
| CN114608061A (en) * | 2022-04-04 | 2022-06-10 | 哈尔滨新光光电科技股份有限公司 | Slot type solar heating system |
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| CN203928455U (en) * | 2014-05-27 | 2014-11-05 | 益科博能源科技（上海）有限公司 | The non-tracking solar heat collector of one dimension all-glass vacuum calandria |
| CN204593898U (en) * | 2015-03-17 | 2015-08-26 | 益科博能源科技（上海）有限公司 | Vacuum collector |
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| JPS57117749A (en) * | 1981-01-14 | 1982-07-22 | Matsushita Electric Works Ltd | Solar-heat absorbing element |
| CN2365597Y (en) * | 1998-09-04 | 2000-02-23 | 北京市太阳能研究所 | U-shape tube type solar vacuum thermal-arrest tube |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375226A (en) * | 2016-11-02 | 2018-08-07 | 益科博能源科技（上海）有限公司 | Non-tracking formula solar thermal collector |
| CN106766247A (en) * | 2016-11-25 | 2017-05-31 | 东南大学 | A kind of metal type vacuum heat collection pipe |
| CN106949642A (en) * | 2017-04-14 | 2017-07-14 | 安徽晶润新能源有限公司 | The high solar thermal collector of heat exchange efficiency |
| CN106907872A (en) * | 2017-04-17 | 2017-06-30 | 安徽晶润新能源有限公司 | Solar energy vacuum heat collecting device |
| CN111998547A (en) * | 2020-09-01 | 2020-11-27 | 宁波盾科新材料有限公司 | High-efficiency solar heat collecting pipe and manufacturing method thereof |
| CN114608061A (en) * | 2022-04-04 | 2022-06-10 | 哈尔滨新光光电科技股份有限公司 | Slot type solar heating system |
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Application publication date: 20161019 |