CN105180467B - Through type single tube solar collector with semiellipse glass cover - Google Patents
Through type single tube solar collector with semiellipse glass cover Download PDFInfo
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- CN105180467B CN105180467B CN201510439215.8A CN201510439215A CN105180467B CN 105180467 B CN105180467 B CN 105180467B CN 201510439215 A CN201510439215 A CN 201510439215A CN 105180467 B CN105180467 B CN 105180467B
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- China
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- glass cover
- heat
- insulation layer
- absorption tube
- semiellipse
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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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Abstract
The invention discloses the through type single tube solar collector with semiellipse glass cover, glass cover including absorption tube and below absorption tube, described absorption tube is a metal circular tube for through type, the upper semicircumference of the absorption tube is coated with one layer of bottom has the annular heat-insulation layer for disconnecting breach, heat-insulation layer coincides with the center of circle of absorption tube, the lower half circumference of absorption tube exposes to heat-insulation layer, described glass cover is hollow semiellipse lid, and the glass cover exposes to the side hitch heat-insulation layer of heat-insulation layer from absorption tube.The absorber increases the aggregation extent of reflection light using the refraction of semiellipse glass cover, while the amount of light projected on heat-insulation layer can be reduced, greatly improves the solar thermal utilization efficiency of solar energy.
Description
Technical field
The present invention relates to solar energy optical-thermal absorption equipment, the through type single tube solar energy with semiellipse glass cover is specifically referred to
Absorber.
Background technology
With energy resource consumption, population increases, increasingly serious the problems such as environmental disruption, solar energy as it is inexhaustible with it not
The clean energy resource for exhausting, solar thermal utilization is increasingly becoming the research topic of hot topic.Focus solar collector has operation temperature higher
Degree, transformation efficiency higher with advances in technology, awaits further reduces cost, with great potentiality.
Absorber is a very important part in concentrating collector, and the glass cover of existing cavity type absorber is mostly
Plate, light can just be projected on designed absorbing surface after by plate glass cover, and light is passed through when by glass
Make light outwards one segment distance of translation after refraction twice, reduce the light of the receiving on absorbing surface, additionally, there is most
Light causes damage because having projected in heat-preservation cotton, reduces optical efficiency.
The content of the invention
It is an object of the invention to provide a kind of through type single tube solar collector with semiellipse glass cover, the absorber
Using the refraction of semiellipse glass cover, increase the aggregation extent of reflection light, while the light projected on heat-insulation layer can be reduced
Line number amount, greatly improves the solar thermal utilization efficiency of solar energy.
What above-mentioned purpose of the invention was realized by the following technical solutions：Through type single tube with semiellipse glass cover
Solar collector, including absorption tube and the glass cover below absorption tube, it is characterised in that：Described absorption tube is one
The metal circular tube of root through type, the upper semicircumference of the absorption tube is coated with one layer of bottom has the annular insulation for disconnecting breach
Layer, heat-insulation layer coincides with the center of circle of absorption tube, and the lower half circumference of absorption tube exposes to heat-insulation layer, and described glass cover is hollow
Semiellipse lid, the glass cover exposes to the side hitch heat-insulation layer of heat-insulation layer from absorption tube.
In the present invention, the material of the absorption tube is steel or stainless steel.
In the present invention, the material of described heat-insulation layer is mineral wool or mineral wool or microporous calcium silicate.
In the present invention, the absorption tube is coated with absorber coatings in the lower half circumference for exposing, can absorb as far as possible it is many too
Positive short wave radiation section hot-fluid, and suppress the long-wave band heat radiation itself launched to environment, then reduce heat loss.
In the present invention, the ratio between major axis and short axle of the glass cover are 6：5, the major axis of glass cover and the bore of absorption tube
The ratio between be 3：1, the ratio between the major axis of glass cover and the external diameter of heat-insulation layer are 1.1：1.
In the present invention, the breach of the heat-insulation layer is sector notch, and heat-insulation layer has inner arc surface and exterior arc surface, cylindrical
Central angle corresponding to cambered surface is 227.4 °.
In the present invention, the glass cover uses ultra-clear glasses of the light transmittance more than 91.5%.
In the present invention, the pipe external diameter of the absorption tube is 204mm, and bore is 200mm.
Compared with prior art, absorber of the invention uses half elliptic glass cover, on the one hand can reduce in cavity
The flowing of outer air, suppresses the heat convection of absorber and extraneous air, makes heat flux distribution uniform, on the other hand, the half of use
Elliptic cross-section, can play a part of to assemble reflection light, make most of light-ray condensing on the lower half circumference of absorption tube, have
Effect light is reduced to fall the solar energy heat loss caused on heat-insulation layer.
Brief description of the drawings
The present invention is described in further details with reference to the accompanying drawings and detailed description.
Fig. 1 is the working state schematic representation of absorber of the present invention；
Fig. 2 is the overall structure diagram of absorber of the present invention.
Description of reference numerals
1st, absorption tube；2nd, absorber coatings；3rd, glass cover；4th, refracted light；5th, speculum；
6th, incident ray；7th, reflection light；8th, heat-insulation layer；
Specific embodiment
The through type single tube solar collector with semiellipse glass cover as shown in Figure 1 and Figure 2, including absorption tube 1 and
Positioned at the glass cover 3 of the lower section of absorption tube 1, absorption tube 1 is a metal circular tube for through type, and specific material is steel, it is also possible to adopted
With stainless steel, the pipe external diameter of absorption tube 1 is 204mm, and bore is 200mm, and the upper semicircumference of absorption tube 1 is coated with one layer of bottom
With the annular heat-insulation layer 8 for disconnecting breach, i.e. the upper semicircumference of absorption tube 1 has heat-insulation layer to wrap up, the lower half circumference of absorption tube 1
Without heat-insulation layer parcel, heat-insulation layer 8 coincides with the center of circle of absorption tube 1, and the breach of heat-insulation layer 8 is the annular breach of fan, heat-insulation layer 8
Thickness is 163mm, and heat-insulation layer 8 has inner arc surface and exterior arc surface, and inner arc surface is adjacent to the upper semicircumference of absorption tube 1, interior
Central angle corresponding to arc surface is 180 °, and the central angle corresponding to exterior arc surface is 227.4 °.
The material of heat-insulation layer 8 is mineral wool, it would however also be possible to employ mineral wool or microporous calcium silicate, the bottom of heat-insulation layer 8 open up
The fan annular breach of disconnection so that the lower half circumference of absorption tube 1 exposes to heat-insulation layer 8, and reduction projects the light on heat-insulation layer 8
Quantity, while be also causes the lower half circumference of absorption tube 1 directly against sunshine exposure, absorption tube 1 is in the lower half circle for exposing
The selective absorber coatings 2 of week coating, absorption efficiency of the enhancing to sunshine.
Glass cover 3 is hollow semiellipse lid, and using light transmittance more than 91.5%, refractive index is 1.544 to glass cover 3
Ultra-clear glasses, the major axis of glass cover 3 is 600mm, and short axle is 500mm, and the ratio between major axis and short axle are 6：5, the major axis of glass cover 3 with
The ratio between bore of absorption tube 1 is 3：1, the external diameter of heat-insulation layer 8 is 273mm, the major axis of glass cover 3 and the external diameter of heat-insulation layer 8 it
Than being 2.2：1, glass cover 3 exposes to the side hitch heat-insulation layer 8 of heat-insulation layer 8, the hitch heat-insulation layer 8 of glass cover 3 from absorption tube 1
Afterwards, the space that glass cover 3 is enclosed with the lower half circumference and heat-insulation layer 8 of absorption tube 1 constitutes the absorbing cavity of the absorber, sunshine
Line enters absorbing cavity after the refraction of semiellipse glass cover, then injects the lower half circumference of absorption tube 1.
Glass cover 3 can reduce the flowing of cavity inner air and outer air, suppress the heat convection of absorber and extraneous air, make heat
Flow distribution is uniform, while glass cover 3 uses semiellipse shape, the aggregation extent of reflection light can be improved by reflecting, and then subtracts
The light in heat-preservation cotton is projected less, plays a part of to improve optical efficiency.
When the absorber of the present embodiment is used in linear fresnel reflecting mirror concentrator, absorption tube 1 is Longitudinal extending
Pipeline, heat transfer medium is flowed into from one end of absorption tube 1, from other end outflow, the linear Fresnel speculum optically focused of Longitudinal extending
On the lower half circumference that device exposes solar radiant heat stream aggregation to absorption tube 1, working medium flowing in the absorption tube 1, incident ray 6 by
Speculum 5 reflexes to the surface of glass cover 3, and refracted light 4, opposite side of the refracted light 4 from glass cover 3 are formed into glass cover 3
Injection is reflected again, is gathered on the lower half circumference of absorption tube 1, as thermophore after working medium heat absorption, heat band to the dress that exchanges heat
Put.By the reflection of speculum 5 and the refraction and absorption of ellipsoidal glass lid, the light of the overwhelming majority can be with for incident ray 6
Arrival scribbles the pipe face of the lower half circumference of the absorption tube 1 of coating for selective absorption 2 so as to be absorbed.
The above embodiment of the present invention is not limiting the scope of the present invention, and embodiments of the present invention are not limited to
This, all this kind the above of the invention, according to the ordinary technical knowledge and customary means of this area, is not departing from this
Under the premise of inventing above-mentioned basic fundamental thought, the modification of other diversified forms made to said structure of the present invention, replace or become
More, all should fall within the scope and spirit of the invention.
Claims (8)
1. the through type single tube solar collector with semiellipse glass cover, including absorption tube and the glass below absorption tube
Glass lid, it is characterised in that：Described absorption tube is a metal circular tube for through type, and the upper semicircumference of the absorption tube is coated with
One layer of bottom has the annular heat-insulation layer for disconnecting breach, and heat-insulation layer coincides with the center of circle of absorption tube, the lower half circle of absorption tube
Expose to heat-insulation layer week, described glass cover is hollow semiellipse lid, and the glass cover exposes to heat-insulation layer from absorption tube
Side hitch heat-insulation layer.
2. the through type single tube solar collector with semiellipse glass cover according to claim 1, it is characterised in that：Institute
The material for stating absorption tube is steel or stainless steel.
3. the through type single tube solar collector with semiellipse glass cover according to claim 1, it is characterised in that：Institute
The material of the heat-insulation layer stated is mineral wool or mineral wool or microporous calcium silicate.
4. the through type single tube solar collector with semiellipse glass cover according to claim 1, it is characterised in that：Institute
State absorption tube and be coated with absorber coatings in the lower half circumference for exposing.
5. the through type single tube solar collector with semiellipse glass cover according to claim 1, it is characterised in that：Institute
It is 6 to state the ratio between major axis and short axle of glass cover：5, the ratio between the major axis of glass cover and the bore of absorption tube are 3：1, glass cover
The ratio between external diameter of major axis and heat-insulation layer is 1.1：1.
6. the through type single tube solar collector with semiellipse glass cover according to claim 1, it is characterised in that：Institute
The breach of heat-insulation layer is stated for sector notch, heat-insulation layer has inner arc surface and exterior arc surface, the central angle corresponding to exterior arc surface
It is 227.4 °.
7. the through type single tube solar collector with semiellipse glass cover according to claim 1, it is characterised in that：Institute
Glass cover is stated using ultra-clear glasses of the light transmittance more than 91.5%.
8. the through type single tube solar collector with semiellipse glass cover according to claim 1, it is characterised in that：Institute
The pipe external diameter of absorption tube is stated for 204mm, bore is 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510439215.8A CN105180467B (en) | 2015-07-14 | 2015-07-23 | Through type single tube solar collector with semiellipse glass cover |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520510342 | 2015-07-14 | ||
| CN2015205103428 | 2015-07-14 | ||
| CN201510439215.8A CN105180467B (en) | 2015-07-14 | 2015-07-23 | Through type single tube solar collector with semiellipse glass cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105180467A CN105180467A (en) | 2015-12-23 |
| CN105180467B true CN105180467B (en) | 2017-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510439215.8A Active CN105180467B (en) | 2015-07-14 | 2015-07-23 | Through type single tube solar collector with semiellipse glass cover |
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| Country | Link |
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| CN (1) | CN105180467B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826714B (en) * | 2018-05-11 | 2020-01-07 | 北京恒聚化工集团有限责任公司 | Heat collecting pipe |
| CN112460381B (en) * | 2020-11-26 | 2022-04-26 | 中广核研究院有限公司 | Metal reflection type heat insulation layer structure of primary loop equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10306531A1 (en) * | 2002-11-28 | 2004-06-17 | Brose, Ursula | Solar heat collection panel has heat insulation surface backed by a heat conducting surface which acts as a heating or cooling surface |
| CN2826294Y (en) * | 2005-09-30 | 2006-10-11 | 邵强 | Strong light solar heating pipe |
| CN103225900B (en) * | 2013-04-25 | 2015-10-14 | 桑夏太阳能股份有限公司 | Based on the pressure-bearing type solar heat collector of groove type parabolic mirror |
| CN103344057B (en) * | 2013-06-27 | 2014-11-26 | 中国石油大学(华东) | Glass cover with uniformly distributed tube type solar energy heat absorber heat flux density field and light-condensing system |
| CN204923503U (en) * | 2015-07-23 | 2015-12-30 | 广东电网有限责任公司电力科学研究院 | Take through type single tube solar of semiellipse glass lid |
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2015
- 2015-07-23 CN CN201510439215.8A patent/CN105180467B/en active Active
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| Publication number | Publication date |
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| CN105180467A (en) | 2015-12-23 |
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