CN108224801A - A kind of cavity-type solar flat plate collector - Google Patents
A kind of cavity-type solar flat plate collector Download PDFInfo
- Publication number
- CN108224801A CN108224801A CN201810125058.7A CN201810125058A CN108224801A CN 108224801 A CN108224801 A CN 108224801A CN 201810125058 A CN201810125058 A CN 201810125058A CN 108224801 A CN108224801 A CN 108224801A
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- China
- Prior art keywords
- absorber
- cavity
- thermal insulation
- flat plate
- type solar
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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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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- Paints Or Removers (AREA)
- Building Environments (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of cavity-type solar flat plate collector, including：Absorber, black coating, liquid-working-medium, transparent cover plate, housing, thermal insulation layer, moving thermal insulation roller shutter and gasket；The upper surface of the absorber is coated with black coating, and for the heat-absorbent surface of absorber into cavity structure, absorber top is provided with transparent cover plate, and filled with thermal insulation layer between absorber lower section and housing, transparent cover plate top is equipped with moving thermal insulation roller shutter, between the two equipped with gasket.The sunlight that heat collector of the present invention enables projection is absorbed by multiple reflections, improves absorptivity of the absorber to solar radiant energy；The solar radiant energy that absorber absorbs can be directly passed to the liquid-working-medium in fluid channel, reduce heat transfer resistance, enhance heat transfer property of the absorber to liquid-working-medium.The present invention is adapted for mount on numerous regions such as ground, roofing, wall surface, balcony, and the further large-scale promotion application for plate solar collector provides technical support.
Description
Technical field
The present invention relates to low-temperature heat collection technical fields in solar energy, and in particular to a kind of cavity-type solar flat plate collector.
Background technology
Plate solar collector low-grade utility in solar energy because of the advantages that it is environmentally friendly, energy saving, practical, of low cost
Field is widely used.Its typical structure is made of absorber, transparent cover plate, thermal insulation layer and four part of housing.Absorber
It is the combination of collecting plate sum aggregate hot working fluid through-flow channel as its critical component, in structure.Above absorber, one layer of covering or
Multi-layer transparent cover board, this cover board require the characteristic that sunlight transmissivity is high, heat-proof quality is good, on the one hand can reduce heat absorption
On the other hand radiation loss of the body to environment can protect absorber from the direct invasion of wind and frost sleet and dust etc..
Although transparent cover plate can play certain insulation effect, it can also absorb with reflective portion solar radiant energy,
The solar radiant energy total amount received to absorber surface plays the role of certain reduction.On the other hand, collecting plate is generally plane
Structure, upper surface spray one layer of blacking or plating coating for selective absorption.This structure type to project on collecting plate
A sunlight part absorbed by collecting plate, another part is reflected towards glass cover-plate by collecting plate, so as to influence collecting plate too
Positive radiant energy absorption and photothermal conversion efficiency.Furthermore the solar radiant energy absorbed by collecting plate need to first pass through conductive force biography
To draft tube, then by heat convection effect be transmitted to liquid-working-medium, could be utilized by user, the process heat transfer resistance compared with
Greatly, the heat transfer property of heat collector is affected.The overall construction design of flat plate collector causes it when intensity of solar radiation is relatively low
Collecting efficiency is relatively low；And problems of excessive heat is susceptible to when intensity of solar radiation is higher, lead to liquid-working-medium vaporization, decompose
Or corrosivity enhancing, so as to influence the performance and durability of each heat-collecting part and entire collecting system.
Invention content
In order to solve the problems in the existing technology, the present invention provides a kind of cavity-type solar flat plate collector, overcomes
Flat plate collector heat transfer property and the problem of poor durability in the prior art.
The technical scheme is that：A kind of cavity-type solar flat plate collector, including：Absorber, black coating, liquid
Working media, transparent cover plate, housing, thermal insulation layer, moving thermal insulation roller shutter and gasket；The upper surface of the absorber is coated with black painting
Layer, for the heat-absorbent surface of absorber into cavity structure, absorber top is provided with transparent cover plate, is filled between housing below absorber
There is thermal insulation layer, moving thermal insulation roller shutter is equipped with above transparent cover plate, between the two equipped with gasket.
The heat-absorbent surface of the absorber is cavity structure, and section shape is V-type, fluted body, semi-circular or pipe aerofoil profile, institute
V-angle A is stated between 45 °~70 °, absorber by aluminium alloy or other high temperature resistants, thermal conductivity factor height, easy processing, it is cheap easily
The material obtained forms an entirety through rolling.
The black coating is blacking or coating for selective absorption.The blacking is unglazed blackboard paint, described
Coating for selective absorption is alumilite process, copper surface oxidation or black nickel plating.
The liquid-working-medium is water, conduction oil, alcoholic solution, melting salt or nano-solution.
The transparent cover plate is set as one layer or multilayer, material for sunlight transmittance is high, absorptivity and reflectivity are low, every
Good in thermal property, the material of good mechanical property.
The transparent cover plate material is glass or polyurethane.
The moving thermal insulation roller shutter is made of the waterproof materials such as plastic-steel, aluminium alloy package heat-insulating heat-preserving material.
Beneficial effects of the present invention are：The cavity-type solar flat plate collector of the present invention, by the way that absorber upper surface is set
Count into cavity structure so that projecting the sunlight come can be absorbed by multiple reflections, improve absorber to solar radiant energy
Absorptivity.The solar radiant energy that absorber absorbs can be directly passed to the liquid-working-medium in fluid channel, which reduces
Heat transfer resistance, enhances heat transfer property of the absorber to liquid-working-medium.Absorber by aluminium alloy or other high temperature resistants, lead
Hot coefficient height, easy processing, the rolling of cheap and easily-available material into an entirety, this structure type intensity is high, can modularization add
Work manufactures.In addition, when intensity of solar radiation is relatively low or higher, moving thermal insulation roller shutter can play certain heat preservation or anti-overheat is made
With ensure that heat collector can also work normally under unfavorable state of weather.The cavity-type solar flat plate collector is adapted to fit
In numerous regions such as ground, roofing, wall surface, balcony, the further large-scale promotion application for plate solar collector provides
Technical support.
Description of the drawings
Fig. 1 is the end structure illustration of cavity-type solar flat plate collector of the present invention；
Fig. 2 is the end structure illustration that absorber cavity of the present invention is fluted body；
Fig. 3 is that absorber cavity of the present invention is semi-circular end structure illustration；
Fig. 4 is the end structure illustration that absorber cavity of the present invention is pipe aerofoil profile；
Fig. 5 is the three-dimension packaging structure diagram of the present invention for inhaling cavity-type solar flat plate collector.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 5, cavity-type solar flat plate collector of the present invention includes absorber 1, black coating 2, liquid
Body running medium 3, transparent cover plate 4, housing 5, thermal insulation layer 6, moving thermal insulation roller shutter 7, gasket 8, lower manifold 9, upper confluence are female
The components such as pipe 10, water inlet pipe 11 and outlet pipe 12.The upper surface of absorber 1 is coated with black coating 2, comes too to absorb projection
Positive radiation energy, black coating 2 can be blacking, such as unglazed blackboard paint；Coating for selective absorption is alternatively, such as aluminium anodes oxygen
Change, copper surface oxidation, black nickel plating etc..The heat-absorbent surface of absorber 1 into V-type cavity structure, to project the sunlight come into
Row repeatedly absorbs and reflection, to improve absorptivity of the absorber 1 to solar radiant energy.The solar radiant energy that absorber 1 absorbs, can
The liquid-working-medium 3 being directly passed in its fluid channel, is then used by user side.The process can reduce heat transfer resistance,
Enhance heat transfer property of the absorber 1 to liquid-working-medium 3.The heat-absorbent surface end surface shape of absorber 1 in addition to for above-mentioned V-type it
Outside or fluted body shown in Fig. 2~4, semi-circular, pipe aerofoil profile etc., more than shape can play the effect of cavity, by aluminium alloy
Or other high temperature resistants, thermal conductivity factor height, easy processing, cheap and easily-available material form an entirety, this structural strength through rolling
High, processing and manufacturing is simply.To ensure enough structural strengths and higher solar absorptance, v-angle A is preferably at 45 °~70 °
Between.There is transparent cover plate 4 in 1 top of absorber, filled with thermal insulation layer 6 between lower section and housing 5, to protect absorber 1 and drop
The radiation loss of low absorber 1 outwardly environment.There is moving thermal insulation roller shutter 7 in 4 top of transparent cover plate, has gasket 8 to rise between the two
To protection cushioning effect.
The lower face and upper surface of absorber 1 pass through weldering with the lower manifold 9 of heat collector and upper manifold 10 respectively
Connect connected, formation fluid channel.The lower manifold 9 and upper manifold 10 of heat collector be divided into not with water inlet pipe 11 and outlet pipe
12 are connected.Wherein there is screw thread processing inside water inlet pipe 11 and outlet pipe 12, can be carried out with solar thermal collection system exterior line
Flexibly and easily connect.
The moving thermal insulation roller shutter 7 can be opened and closed flexibly, can wrap up heat-insulated guarantor by waterproof materials such as plastic-steel, aluminium alloys
Adiabator is made.When heat collector works normally, moving thermal insulation roller shutter 7 is opening；It is radiated very much on night or daytime by force
When degree is too weak, moving thermal insulation roller shutter 7 is shielding status, can play certain insulation effect；Daytime intensity of solar radiation too
Qiang Shi, moving thermal insulation roller shutter 7 are shielding status, can play certain anti-heat effect excessively.Aforesaid operations can by manually or
Simple electric drive mechanism is completed, and facilitates control.
Although above in conjunction with attached drawing, invention has been described, and the invention is not limited in above-mentioned specific implementations
Mode, above-mentioned specific embodiment is only schematical, is not restricted, those of ordinary skill in the art are at this
Under the enlightenment of invention, present inventive concept and scope of the claimed protection are not being departed from, many shapes can also be made
Formula, within these are all belonged to the scope of protection of the present invention.
Claims (8)
1. a kind of cavity-type solar flat plate collector, which is characterized in that including：Absorber (1), black coating (2), liquid working
Medium (3), transparent cover plate (4), housing (5), thermal insulation layer (6), moving thermal insulation roller shutter (7) and gasket (8)；The absorber (1)
Upper surface be coated with black coating (2), the heat-absorbent surface of absorber (1) is provided with transparency cover into cavity structure above absorber (1)
Plate (4) is equipped with moving thermal insulation and rolls up between absorber (1) lower section and housing (5) filled with thermal insulation layer (6), transparent cover plate (4) top
Curtain (7), between the two equipped with gasket (8).
2. cavity-type solar flat plate collector according to claim 1, which is characterized in that the heat-absorbent surface of the absorber (1)
For cavity structure, section shape is V-type, fluted body, semi-circular or pipe aerofoil profile, the v-angle A between 45 °~70 °,
Absorber (1) is by aluminium alloy or other high temperature resistants, thermal conductivity factor height, easy processing, cheap and easily-available material through rolling into one
It is whole.
3. cavity-type solar flat plate collector according to claim 1, which is characterized in that the black coating (2) is black
Coating or coating for selective absorption.
4. cavity-type solar flat plate collector according to claim 3, which is characterized in that the blacking is unglazed blackboard
Paint, the coating for selective absorption are alumilite process, copper surface oxidation or black nickel plating.
5. cavity-type solar flat plate collector according to claim 1, which is characterized in that the liquid-working-medium (3) is
Water, conduction oil, alcoholic solution, melting salt or nano-solution.
6. cavity-type solar flat plate collector according to claim 1, which is characterized in that the transparent cover plate (4) is set as one
Layer or multilayer, material is sunlight transmittance is high, absorptivity and reflectivity are low, heat-proof quality is good, good mechanical property material.
7. cavity-type solar flat plate collector according to claim 6, which is characterized in that transparent cover plate (4) material is
Glass or polyurethane.
8. cavity-type solar flat plate collector according to claim 1, which is characterized in that the moving thermal insulation roller shutter (7) by
The waterproof materials such as plastic-steel, aluminium alloy package heat-insulating heat-preserving material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810125058.7A CN108224801A (en) | 2018-02-07 | 2018-02-07 | A kind of cavity-type solar flat plate collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810125058.7A CN108224801A (en) | 2018-02-07 | 2018-02-07 | A kind of cavity-type solar flat plate collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108224801A true CN108224801A (en) | 2018-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810125058.7A Pending CN108224801A (en) | 2018-02-07 | 2018-02-07 | A kind of cavity-type solar flat plate collector |
Country Status (1)
| Country | Link |
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| CN (1) | CN108224801A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237815A (en) * | 2018-08-23 | 2019-01-18 | 清华大学深圳研究生院 | A kind of reflection volume holographic solar energy conversion equipment |
| CN110762665A (en) * | 2019-10-23 | 2020-02-07 | 西安工程大学 | Heating, ventilating and air conditioning system for rural residence combined with solar heat storage technology |
| CN112097314A (en) * | 2020-08-27 | 2020-12-18 | 天津大学 | Solar hot air/hot water heat collector and solar chimney integrated device |
Citations (6)
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|---|---|---|---|---|
| AU1647876A (en) * | 1975-08-01 | 1978-02-09 | Newman Tonks Ltd | Solar radiation absorption panels |
| CN201412975Y (en) * | 2009-02-18 | 2010-02-24 | 赵风雏 | Mobile type solar energy water boiling stove |
| DE102008064351A1 (en) * | 2008-12-20 | 2010-07-01 | Albrecht, René | solar panel |
| CN204214159U (en) * | 2014-11-18 | 2015-03-18 | 皖西学院 | A kind of solar water heater protective device |
| CN206369365U (en) * | 2016-12-06 | 2017-08-01 | 嘉兴家乐福新能源有限公司 | A kind of antifreezing protection type rack of solar water heater |
| CN208186882U (en) * | 2018-02-07 | 2018-12-04 | 天津大学 | A kind of cavity-type solar flat plate collector |
-
2018
- 2018-02-07 CN CN201810125058.7A patent/CN108224801A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1647876A (en) * | 1975-08-01 | 1978-02-09 | Newman Tonks Ltd | Solar radiation absorption panels |
| DE102008064351A1 (en) * | 2008-12-20 | 2010-07-01 | Albrecht, René | solar panel |
| CN201412975Y (en) * | 2009-02-18 | 2010-02-24 | 赵风雏 | Mobile type solar energy water boiling stove |
| CN204214159U (en) * | 2014-11-18 | 2015-03-18 | 皖西学院 | A kind of solar water heater protective device |
| CN206369365U (en) * | 2016-12-06 | 2017-08-01 | 嘉兴家乐福新能源有限公司 | A kind of antifreezing protection type rack of solar water heater |
| CN208186882U (en) * | 2018-02-07 | 2018-12-04 | 天津大学 | A kind of cavity-type solar flat plate collector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237815A (en) * | 2018-08-23 | 2019-01-18 | 清华大学深圳研究生院 | A kind of reflection volume holographic solar energy conversion equipment |
| CN110762665A (en) * | 2019-10-23 | 2020-02-07 | 西安工程大学 | Heating, ventilating and air conditioning system for rural residence combined with solar heat storage technology |
| CN112097314A (en) * | 2020-08-27 | 2020-12-18 | 天津大学 | Solar hot air/hot water heat collector and solar chimney integrated device |
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