CN106766257A - A kind of trough type solar heat-collector - Google Patents
A kind of trough type solar heat-collector Download PDFInfo
- Publication number
- CN106766257A CN106766257A CN201611251799.7A CN201611251799A CN106766257A CN 106766257 A CN106766257 A CN 106766257A CN 201611251799 A CN201611251799 A CN 201611251799A CN 106766257 A CN106766257 A CN 106766257A
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- China
- Prior art keywords
- heat
- insulation layer
- round tube
- glass round
- arc opening
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/30—Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/71—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with parabolic reflective surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/30—Auxiliary coatings, e.g. anti-reflective coatings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/20—Working fluids specially adapted for solar heat collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/60—Thermal insulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S2080/01—Selection of particular materials
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
To overcome that traditional trough system solar vacuum heat-collecting pipe processing and manufacturing difficulty is big, service life is short, manufacture and maintenance cost shortcoming high, the invention discloses a kind of trough type solar heat-collector, including thermal-collecting tube, condenser and support, wherein, thermal-collecting tube includes glass round tube, absorber coatings, heat-insulation layer and heat absorption working medium；Absorber coatings are arranged in glass round tube inwall, and heat-insulation layer is arranged in glass round tube outer wall, and heat-insulation layer is provided with heat-insulation layer arc opening, and absorber coatings are provided with absorber coatings arc opening at position corresponding with heat-insulation layer arc opening；Heat absorption working medium filling is in glass round tube.Further, low-radiation film is additionally provided between glass round tube and heat-insulation layer.By the trough type solar heat-collector of this structure, the characteristics of blackbody chamber high-absorbility can not only be made full use of, collecting efficiency is greatly promoted；Traditional vacuum tube can also be overcome for the rigors of vacuum simultaneously, there is simple structure, easy to maintenance, low cost of manufacture.
Description
Technical field
The present invention relates to a kind of trough type solar heat-collector, belong to solar energy optical-thermal applied technical field.
Background technology
The characteristics of low-density that solar energy has, intermittence, spatial distribution are continually changing is also to the collection of solar thermal energy
Requirement very high is proposed with utilizing.By the difference of heat collector type, concentration type solar electricity generation system can be divided into slot type system
System, tower system and disk system.Wherein, solar parabolic through power generation system had commercial scale and technical requirements relatively
It is low, it is a kind of more satisfactory generation technology.
Heat collector is the important component of solar thermal collection system, the thermal-arrest used by the collecting system of traditional groove type solar
Device is usually vacuum heat collection pipe, and the primary structure of the thermal-collecting tube is metal tube and concentric glass of the surface with absorber coatings
Glass pipe, and vacuumized in glass tube with metal tube interlayer.This structure has following technical problem：Metal and glass
Between there is a problem of welded seal sex chromosome mosaicism, metal tube and glass pipeline swell increment differ generation internal stress, be difficult to ensure that folder
The problem of the vacuum in layer.These technical problems determine its high production cost and shorter service life.In view of on
The problems of traditional vacuum tube that face is mentioned, it is necessary to the trough type solar heat-collector of Development of Novel.
The absorptance of black matrix is 1, it means that black matrix can all absorb the solar radiant energy of various wavelength.With aperture
The uniform cavity of temperature be exactly a blackbody model, when solar radiant energy injects cavity through aperture, experience multiple in cavity
Absorb and reflect, and often by once absorbing, radiation energy is just weakened once according to the share of inwall absorptivity, can finally leave
The energy of aperture is very little, it is believed that be completely absorbed in cavity inside.So, for radiation characteristic, aperture
With the same property of black-body surface.
Chinese patent CN102135331A discloses a kind of trough type solar heat-collector, including opening ring pipe, absorption are applied
Layer, heat-insulating material and entrance cloche, opening ring pipe are provided with opening, and annular housing inside sets equipped with heat absorption working medium, inner surface
There are absorber coatings, outer surface is provided with heat-insulating material, entrance cloche is connected at opening.It has simple structure, it is easy to maintenance, into
This is low, the advantages of collecting efficiency is high.But, open annular pipe is in hollow-core construction, and its inner layer glass is heated first, and heat is again by inhaling
Hot working fluid outer layers glass is transmitted, therefore internal and external layers of glass easily produces internal stress to cause its deformation or even damage due to there is the temperature difference
It is bad；Secondly, the outside heat loss through radiation amount of the heat collector is more, causes more heat transfer to lose；Again, the glass bushing is due to its shape
Particularity, do not have ready-made pipeline can directly be connected up to will manage in heat absorption working medium draw purpose, collection can be brought
The connectivity problem of heat pipe termination.
The content of the invention
To solve the above problems, the present invention proposes a kind of trough type solar heat-collector, makes wall temperature inside and outside glass round tube equal
It is even, it is unlikely to deform, service life is longer；And collecting efficiency is higher, structure is simpler.
Trough type solar heat-collector provided by the present invention, including thermal-collecting tube, condenser and support；Condenser uses optically focused
Paraboloid structure, thermal-collecting tube is fixedly connected condenser by support, it is characterised in that：Thermal-collecting tube includes glass round tube 1, absorbs painting
Layer 2, heat-insulation layer 4 and heat absorption working medium 6；Absorber coatings 2 are arranged in the inwall of glass round tube 1, and heat-insulation layer 4 is arranged in outside glass round tube 1
Wall；Heat-insulation layer 4 is provided with heat-insulation layer arc opening 5, and absorber coatings 2 are provided with the corresponding position of heat-insulation layer arc opening 5
Absorber coatings arc opening 7；Heat absorption working medium 6 is filled in glass round tube 1.
Preferably, low-radiation film 3 is additionally provided between glass round tube 1 and the heat-insulation layer 4.
Preferably, glass round tube 1 uses high-boron-silicon glass material
Preferably, the width of heat-insulation layer arc opening 5 and absorber coatings arc opening 7 is more than or equal to light through condenser
The width of the linear beam spot formed after focusing.
Preferably, heat absorption working medium 6 is conduction oil or water.
Beneficial effect：
(1) design feature such as one slit that trough type solar heat-collector is formed by arc opening, high using blackbody chamber
The characteristics of absorptivity, make the sunray after focusing by heat absorption working medium and glass inside pipe wall by repeatedly absorbing repeatedly, fully inhale
The defocused light of pinching, collecting efficiency is high；And overcoming rigors of the traditional vacuum tube for vacuum so that structure is greatly simple
Change, manufacture and maintenance cost are significantly reduced.
(2) wall temperature is more uniform inside and outside glass chamber, is difficult to form hot-spot, causes the deformation of heat collector, and hot property is stable,
Service life is longer.
(3) low-radiation film of glass tube exterior surface allows that solar radiation is directed through heat-insulation layer arc opening and enters glass
Glass pipe, while reducing the outside long-wave radiation of glass tube；Additionally, the use of heat-insulation layer can also reduce heat dissipation capacity.
(4) in same outer diameter, in the case of identical pipe range, trough type solar heat-collector disclosed in this invention can be contained more
Many heat absorption working medium, can further save the cost of heat collector materials and use space.
Brief description of the drawings
Fig. 1 is the thermal-collecting tube cross-sectional view in embodiment；
Fig. 2 is the trough type solar heat-collector working state schematic representation in embodiment；
In figure：1- glass tubes；2- absorber coatings；3- low-radiation films；4- heat-insulation layers；5- heat-insulation layer arc openings；6- absorbs heat
Working medium；7- absorber coatings arc openings；8- supports；9- optically focused parabolas.
Specific embodiment
Shown in Fig. 1 be trough type solar heat-collector embodiment disclosed in this invention heat collector cross-section structure illustrate
Figure, heat collector includes thermal-collecting tube, optically focused parabola 9 and support 7.Wherein, thermal-collecting tube includes glass round tube 1, absorber coatings 2, low
Radiation film 3, heat-insulation layer 4, heat-insulation layer arc opening 5, absorber coatings arc opening 7.
The material of glass round tube 1 is (3.3 scholars using the stronger high-boron-silicon glass of ability, its coefficient of linear thermal expansion is hit outside resisting
0.1) × 10-6/K, is the special of a kind of low thermal expansion, high temperature resistant, high intensity, high rigidity, high transmission rate and high chemical stability
Glass material.The inner surface note of glass round tube 1 has absorber coatings 2, the preferential absorber coatings from high-absorbility；Wrap up outer surface
There is low-radiation film 3, such as Low-E films；Inside is equipped with heat absorption working medium 6, such as conduction oil or water；In order to reduce energy loss, glass tube
Outer wall is provided with heat-insulation layer 4, there is arc opening 5 on heat-insulation layer, has absorber coatings arc in the corresponding position of heat-insulation layer arc opening
Opening 7.
As shown in Fig. 2 condenser uses optically focused paraboloid structure, optically focused parabola 9 is line focus device, the traceable sun
Light.Light at focal line by after the aggregation of optically focused parabola 9, forming line style hot spot.Glass round tube 1 is fixed by support 8 and connected
Connect optically focused parabola 9 so that heat-insulation layer arc opening 5 and absorber coatings arc opening 7 are just to the shape after the focusing of optically focused parabola 9
Into linear beam spot.Heat-insulation layer arc opening 5 and absorber coatings arc opening 7 are placed on line style hot spot, the width of arc opening 5
Width of the degree slightly larger than linear beam spot.It is just corresponding with the arc opening of heat-insulation layer in the absorber coatings 2 of the inner surface of glass round tube 1
Position be provided with absorber coatings arc opening 7, can cause solar light by opening enter glass tube in.
In real work, after light is assembled through optically focused parabola 9, a line style light articulate fascia, heat-insulation layer are formed at focal line
, just to the line style hot spot, the light after focusing is justified by arc opening into glass for arc opening 5 and absorber coatings arc opening 7
Pipe 1, the heat absorption working medium 6 in heating glass round tube 1.The width of heat-insulation layer arc opening 5 and absorber coatings arc opening 7 is greater than
The width of line style light articulate fascia, to ensure that the sunlight after focusing on does not spill over absorption region.Light is reflected through arc through optically focused parabola 9
After shape opening enters glass round tube 1, experience heat absorption working medium 6 and the inner surface of glass round tube 1 multiple absorption and reflection, by absorbing
The use of coating 2 so that energy is according to the share of inwall absorptivity higher constantly by the heat absorption working medium 6 inside glass round tube 1
Absorb so that the energy that finally can leave glass round tube 1 by heat-insulation layer arc opening 5 is smaller, reaches the effect of high-absorbility.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of trough type solar heat-collector, including thermal-collecting tube, condenser and support；Condenser uses optically focused paraboloid structure,
Thermal-collecting tube is fixedly connected condenser by support, it is characterised in that：Thermal-collecting tube includes glass round tube (1), absorber coatings (2), protects
Warm layer (4) and heat absorption working medium (6)；Absorber coatings (2) are arranged in glass round tube (1) inwall, and heat-insulation layer (4) is arranged in glass round tube
(1) outer wall；Heat-insulation layer (4) is provided with heat-insulation layer arc opening (5), and absorber coatings (2) are corresponding with heat-insulation layer arc opening (5)
Position at be provided with absorber coatings arc opening (7)；Heat absorption working medium (6) is filled in glass round tube (1).
2. a kind of trough type solar heat-collector according to claim 1, it is characterised in that：In the glass round tube (1) and
Low-radiation film (3) is additionally provided between the heat-insulation layer (4).
3. a kind of trough type solar heat-collector according to claim 1, it is characterised in that：The glass round tube (1) uses
High-boron-silicon glass material.
4. a kind of trough type solar heat-collector according to claim 1, it is characterised in that：The heat-insulation layer arc opening
(5) and absorber coatings arc opening (7) width more than or equal to light through condenser focus on after formed linear beam spot width
Degree.
5. a kind of trough type solar heat-collector according to claim 1, it is characterised in that：Heat absorption working medium (6) is to lead
Deep fat or water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251799.7A CN106766257A (en) | 2016-12-30 | 2016-12-30 | A kind of trough type solar heat-collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251799.7A CN106766257A (en) | 2016-12-30 | 2016-12-30 | A kind of trough type solar heat-collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106766257A true CN106766257A (en) | 2017-05-31 |
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ID=58928056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611251799.7A Pending CN106766257A (en) | 2016-12-30 | 2016-12-30 | A kind of trough type solar heat-collector |
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| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107054004A (en) * | 2017-06-08 | 2017-08-18 | 辽宁工业大学 | Vehicular solar follows the trail of heat collector and its control method |
| CN110454993A (en) * | 2019-07-22 | 2019-11-15 | 中国建筑股份有限公司 | A kind of optically focused plate-type collector and heat collecting method |
| CN112833570A (en) * | 2020-12-31 | 2021-05-25 | 宁波诺丁汉新材料研究院有限公司 | Solar heating and heat preservation device |
| CN113669920A (en) * | 2021-09-06 | 2021-11-19 | 北京同创绿源能源科技有限公司 | Method for improving heat transfer effect of heat transfer chain in water heater |
| WO2023016615A1 (en) * | 2021-08-09 | 2023-02-16 | Sorptionshade A/S | A shutter for mounting on an exterior side of a building and a method for making a shutter unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135331A (en) * | 2011-03-16 | 2011-07-27 | 北京航空航天大学 | Slot type solar heat collector |
| CN103144381A (en) * | 2013-04-10 | 2013-06-12 | 成都南玻玻璃有限公司 | Green low-emissivity energy-saving glass |
| CN103225900A (en) * | 2013-04-25 | 2013-07-31 | 桑夏太阳能股份有限公司 | Pressure-bearing type solar collector based on groove-type parabolic mirror |
| CN203274289U (en) * | 2013-04-25 | 2013-11-06 | 桑夏太阳能股份有限公司 | Pressure-bearing type solar thermal collector based on groove type parabolic reflector |
| CN104048429A (en) * | 2014-06-27 | 2014-09-17 | 南通河海大学海洋与近海工程研究院 | Medium-high temperature cavity heat collection tube in trough type heat collection system |
-
2016
- 2016-12-30 CN CN201611251799.7A patent/CN106766257A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135331A (en) * | 2011-03-16 | 2011-07-27 | 北京航空航天大学 | Slot type solar heat collector |
| CN103144381A (en) * | 2013-04-10 | 2013-06-12 | 成都南玻玻璃有限公司 | Green low-emissivity energy-saving glass |
| CN103225900A (en) * | 2013-04-25 | 2013-07-31 | 桑夏太阳能股份有限公司 | Pressure-bearing type solar collector based on groove-type parabolic mirror |
| CN203274289U (en) * | 2013-04-25 | 2013-11-06 | 桑夏太阳能股份有限公司 | Pressure-bearing type solar thermal collector based on groove type parabolic reflector |
| CN104048429A (en) * | 2014-06-27 | 2014-09-17 | 南通河海大学海洋与近海工程研究院 | Medium-high temperature cavity heat collection tube in trough type heat collection system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107054004A (en) * | 2017-06-08 | 2017-08-18 | 辽宁工业大学 | Vehicular solar follows the trail of heat collector and its control method |
| CN107054004B (en) * | 2017-06-08 | 2023-04-25 | 辽宁工业大学 | Vehicle-mounted solar tracking heat collection device and control method thereof |
| CN110454993A (en) * | 2019-07-22 | 2019-11-15 | 中国建筑股份有限公司 | A kind of optically focused plate-type collector and heat collecting method |
| CN112833570A (en) * | 2020-12-31 | 2021-05-25 | 宁波诺丁汉新材料研究院有限公司 | Solar heating and heat preservation device |
| WO2023016615A1 (en) * | 2021-08-09 | 2023-02-16 | Sorptionshade A/S | A shutter for mounting on an exterior side of a building and a method for making a shutter unit |
| CN113669920A (en) * | 2021-09-06 | 2021-11-19 | 北京同创绿源能源科技有限公司 | Method for improving heat transfer effect of heat transfer chain in water heater |
| CN113669920B (en) * | 2021-09-06 | 2024-01-02 | 北京同创绿源能源科技有限公司 | Method for improving heat transfer effect of heat transfer chain in water heater |
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Application publication date: 20170531 |