CN201032297Y - Pressure-bearing flat-plate solar collector - Google Patents
Pressure-bearing flat-plate solar collector Download PDFInfo
- Publication number
- CN201032297Y CN201032297Y CNU2007200374081U CN200720037408U CN201032297Y CN 201032297 Y CN201032297 Y CN 201032297Y CN U2007200374081 U CNU2007200374081 U CN U2007200374081U CN 200720037408 U CN200720037408 U CN 200720037408U CN 201032297 Y CN201032297 Y CN 201032297Y
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- Prior art keywords
- plate
- heat
- cover plate
- collector
- solar
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- Expired - Lifetime
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 22
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 19
- 239000004417 polycarbonate Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 12
- 230000001413 cellular effect Effects 0.000 claims description 12
- 230000009977 dual effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 239000003507 refrigerant Substances 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract 1
- 238000000576 coating method Methods 0.000 description 16
- 239000011248 coating agent Substances 0.000 description 12
- 230000005855 radiation Effects 0.000 description 10
- 239000006096 absorbing agent Substances 0.000 description 8
- 241000256844 Apis mellifera Species 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000010748 Photoabsorption Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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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- Photovoltaic Devices (AREA)
- Building Environments (AREA)
Abstract
The pressure-bearing flat-plate solar collector is an improvement of the traditional flat-plate solar collector, and can be used in a traditional solar water heater mode with a working medium as water and a direct-expansion solar heat pump evaporator with a refrigerant as the working medium, the upper portion of the solar collector is a glass cover plate (1), the lower portion of the glass cover plate (1) is a transparent polycarbonate cover plate (2), the lower surface of the transparent polycarbonate cover plate (2) is connected with small fins (3), the lower portion of the transparent polycarbonate cover plate (2) is a heat absorption core plate (4), the upper surface of the heat absorption core plate (4) is provided with a honeycomb structure material (7), the lower portion of the heat absorption core plate (4) is a bottom heat insulation layer (5), and a pressure-bearing pipeline (6) is arranged in the bottom heat insulation layer (5). The solar heat collector flat plate structure can be well combined with a building under the condition that no water storage tank is arranged, and building integration is achieved.
Description
Technical field
The utility model is a kind of the classic flat-plate solar thermal collector to be improved, making can be that the conventional solar boilers mode of water is used with the working media, can use with the direct expanding solar heating pump evaporimeter of cold-producing medium again as working media, belong to solar water heater, the technical field of solar heat pump.
Background technology
The solar energy heating technical development is to the today of technically collecting efficiency aspect no matter, still coml cost performance aspect has all possessed the condition that large-scale promotion is used, but also needs further to improve at installation form, security life-span and with the coordination aesthetic of building.Heat collector must be as the part of building, and both organically combine on aesthetic effect, heat collector must with the same life-span of building.Flat plate collector has the incomparable advantage of other heat collector in this respect:
1) flat plate collector does not have the vacuum requirement, and the life-span is longer, especially high-quality from the full copper heat collector of melting welding, its life-span even also longer than structure trunk.
2) in flat plate collector, working media flows in metallic conduit, does not contact glass and can not cause that water or a large amount of leakage of working medium cause systemic breakdown because of cold fried, hot exploding.
3) in the flat plate collector, heat collecting element and walk between the wet part to be welding or all-metal sealing does not use inevitable aging in time cushion rubber, the long-time running better reliability.
4) flat plate collector realize no gap install produce hot water in, thereby the repertoire that has traditional roofings such as insulation, heat insulation, shading, the rain that keeps out the wind concurrently partly or entirely replaces roof Material minimizing construction cost.
5) the flat plate collector shape and structure is flexible, is easy to make heat collector and architecture noumenon to reach combination.
Have above plurality of advantages just because of flat plate collector, account for more than 80% of the total volume of production and marketing of solar thermal collector in the volume of production and marketing of developed area flat plate collectors such as Europe, the U.S., Australia.
But,, directly add hot water to satisfy domestic hot-water supply by solar energy because the working media of classic flat-plate solar thermal collector generally is a water.Though this mode is simple, may produce in the winter of cold and freeze phenomenon, even can bursting by freezing heat collector itself.And present freezing proof technique also is in development period, can not be satisfactory, and the classic flat-plate heat collector is restricted in the use of high latitude cold district.And when solar radiation is not enough, only adopt solar energy heating water can't satisfy domestic hot-water's temperature requirement.The defective of flat plate collector aspect heat loss also clearly needs to improve collecting efficiency by certain measure.
Summary of the invention
Technical problem: the purpose of this utility model provides a kind of pressure-bearing type flat-plate solar collector that can use the different operating medium, can adopt different cold-producing mediums according to different needs, all can operate as normal under different evaporating pressures.
Technical scheme: pressure-bearing type flat-plate solar collector of the present utility model, glass cover-plate, polycarbonate transparent cover plate, little fin, heat absorption central layer, bottom heat-insulation layer, bearing pipe, cellular structural material; The top of this solar thermal collector is glass cover-plate, in the bottom of glass cover-plate is the polycarbonate transparent cover plate, lower surface at the polycarbonate transparent cover plate is connected with little fin, bottom at the polycarbonate transparent cover plate is the heat absorption central layer, upper surface at the heat absorption central layer is provided with cellular structural material, bottom at the heat absorption central layer is the bottom heat-insulation layer, is provided with bearing pipe in the heat-insulation layer of bottom.On bearing pipe, be provided with electric expansion valve
The medium pipeline that is welded under the heat absorption central layer is improved, in order to adapt to operation, suitably increased pipe thickness, to improve its load performance at the solar heat pump mode.Simultaneously because the molten water-based of some cold-producing medium is relatively poor, at heat collector appropriate location installing drier, to avoid " ice berg " phenomenon.In order to make full use of solar energy and to reduce heat loss, adopt the polycarbonate transparent cover plate that has fin, and on the heat absorption central layer, place cellular structural material, to reduce convection current and radiation loss, collecting efficiency is increased greatly.Electric expansion valve is set on medium pipeline, regulates refrigerant flow and make the load coupling.
Beneficial effect: the beneficial effects of the utility model are: adopt pressure-bearing pipe runner, changing working media is cold-producing medium, make heat collector as the solar heat pump evaporimeter, make and work with the solar heat pump form under domestic hot-water's the situation can't directly obtaining.Simultaneously,, can adopt different cold-producing mediums according to different needs owing to adopt the bearing structure pipeline, all can operate as normal under different evaporating pressures.
1. this flat plate collector can use different working medias, uses flexibly;
2. dual anti-heat loss measure has improved the collecting efficiency of heat collector greatly.
Description of drawings
Fig. 1 is the schematic diagram of this flat plate collector.
Wherein have: glass cover-plate 1, polycarbonate transparent cover plate 2, riblet sheet 3, heat absorption central layer 4, bottom heat-insulation layer 5, bearing pipe 6, cellular structural material 7.
Fig. 2 is the horizontal sectional structure schematic diagram of Fig. 1.
Fig. 3 cellular material structural representation.
The specific embodiment
Fig. 1 is the schematic diagram of this flat plate collector.Glass cover-plate 1 plays the effect that reduces heat radiation and produce greenhouse effects; Polycarbonate transparent cover plate 2, riblet sheet 3 constitute the polycarbonate transparent cover plate with little fin for one, and these little fins have formed many little spaces above the heat absorption central layer, in order to suppress natural convection air; Heat absorption central layer 4 is the heat absorption aluminium sheets that scribble coating, and coating adopts the selectivity anodized coatings; Bearing pipe 6 adopts the good copper pipe material of heat conductivility, suitably increases pipe thickness, improves its bearing capacity, and making working media can be various cold-producing mediums, and heat collector can be used as the solar heat pump evaporimeter and uses; Cellular structural material 7 is that this kind material directly is placed on the absorber plate plate face, can reduce surperficial natural convection air, and greatly reduces heat loss through radiation.Honeycomb and with ribbing Merlon cover plate has played the effect of double inhibition heat collector heat loss.The mineral wool insulation is adopted in the bottom, has further reduced heat loss, improves collecting efficiency.Adding man-hour, pressure-bearing pipe and absorber plate adopt and are welded to connect, and should guarantee that weld strength is enough, can't produce air cleft, reduce thermal contact resistance as far as possible.
The top of this solar thermal collector is glass cover-plate 1, in the bottom of glass cover-plate 1 is polycarbonate transparent cover plate 2, lower surface at polycarbonate transparent cover plate 2 is connected with riblet sheet 3, bottom at polycarbonate transparent cover plate 2 is heat absorption central layer 4, upper surface at heat absorption central layer 4 is provided with cellular structural material 7, bottom at heat absorption central layer 4 is a bottom heat-insulation layer 5, is provided with bearing pipe 6 in bottom heat-insulation layer 5.On bearing pipe 6, be provided with electric expansion valve.Because under the operation of heat pump state, the evaporating pressure of cold-producing medium is much larger than the pressure of normal life hot water, the load performance of traditional sucrose runner can't satisfy the evaporating pressure requirement, therefore must use the pipeline with higher bearing capacity instead.Medium runner is handled through special processing, can bearing certain pressure, in pipeline, evaporate requirement thereby can satisfy cold-producing medium.
The heat loss of flat plate collector mainly concentrates on the heat loss through convection of thermal-arrest plate and surrounding air.For the heat collector that cover plate is arranged, convection losses divides for again by the interior convection losses of absorber plate to cover plate, and by the outer convection losses of cover plate to surrounding air.Under calm situation, outer convection losses is caused by free convection.When hanging down wind speed, cross-ventilation is also dominant.Though also should manage to reduce outer convection losses, convection losses in the most effective still minimizing is to reduce the temperature of cover plate.Convection losses in reducing, method commonly used is to dwindle the air gap and insert heat-barrier material between absorber plate and cover plate.The design settles the polycarbonate transparent cover plate above absorber plate, the riblet sheet under the cover plate is separated into many little passages to air flow channel, is equivalent to reduce the air gap; The cellular material of laying on absorber plate simultaneously, itself has also reduced air flow spaces.Therefore, can effectively reduce interior convection losses.
In the heat collector course of work, when the plate temperature was higher than environment temperature, heat collector is environmental radiation heat transfer towards periphery unavoidably, and this part radiation heat loss also is the pith of flat plate collector heat loss.In the design, effectively reduced the radiant section heat loss by a kind of cellular structural material by on absorber plate, arranging.Honeycomb as shown in Figure 3, its principle that reduces radiation loss is: each honeybee lattice of honeycomb all are orthohexagonal hollow cylinders, the light transmittance of honeybee lattice can reach more than 97% for directional light, for uneven light, honeybee lattice wall can paste the single face of out of plumb honeycomb with panel, and then honeycomb has just had good photo absorption performance.Because honeybee lattice wall can shelter from most of sunlight, the repeatedly reflection of light is all carried out on honeybee lattice wall, so light almost all absorb by honeycomb, if honeycomb is a black, the photo absorption performance of honeycomb will be near absolute black body.By this measure, greatly reduce radiation loss.Simultaneously, on absorber plate, lay cellular structural material, itself also reduced air flow spaces, also effectively reduced interior convection losses.
Directly influenced the performance of solar water heater attached to the quality of the heat absorbing coating on the heat collector heat-absorbing plate core.Heat absorbing coating can be divided into non-selective coating and selective coating two big classes generally, and the important indicator of distinguishing their heat absorption capacities is its absorptance α and the ratio cc/ε of emission than ε.α/the ε of non-selective heat absorbing coating=1; α/the ε of selective heat absorbing coating〉1, and be all selective heat absorbing coating, and the general big more person of ratio, performance is good more.Another important indicator of heat absorbing coating is its weatherability, and its quality is related to coating down to the water heater length in service life.The selectivity anodized coatings is to be widely used in comparatively ideal coating on the flat type solar heat collector, its α/ε at present〉3, service life is about 10 years.Comprehensive its heat absorption capacity and service life, the design adopts the selectivity anodized coatings.
With ribbing polycarbonate transparent cover plate and cellular structural material have significantly reduced the cross-ventilation on heat absorption central layer surface, and have significantly reduced radiation loss, make collecting efficiency obviously increase.The selectivity anodized coatings has improved the overall performance of heat collector.
Electric expansion valve on the medium pipeline can be regulated refrigerant flow according to different burden requirements, and the step-down of throttling simultaneously makes evaporation capacity satisfy the load coupling.
Because the medium pipeline different cold-producing mediums that can flow can experimentize by utilizing different cold-producing mediums, it is higher relatively and satisfy the cold-producing medium of environmental requirement to find out efficient, as the working media of heat collector.The dual anti-heat waste measure of Merlon and honeycomb has improved the collecting efficiency of heat collector, and the system that makes still can use comparatively efficiently in the out of condition occasion of solar radiation.
Claims (2)
1. pressure-bearing type flat-plate solar collector, the top that it is characterized in that this solar thermal collector is glass cover-plate (1), in the bottom of glass cover-plate (1) is polycarbonate transparent cover plate (2), lower surface at polycarbonate transparent cover plate (2) is connected with little fin (3), bottom at polycarbonate transparent cover plate (2) is heat absorption central layer (4), upper surface at heat absorption central layer (4) is provided with cellular structural material (7), bottom at heat absorption central layer (4) is bottom heat-insulation layer (5), is provided with bearing pipe (6) in bottom heat-insulation layer (5).
2. pressure-bearing type flat-plate solar collector according to claim 1 is characterized in that having adopted the dual heat loss that prevents of Merlon fin cover plate and honeycomb, is provided with electric expansion valve simultaneously on bearing pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200374081U CN201032297Y (en) | 2007-05-15 | 2007-05-15 | Pressure-bearing flat-plate solar collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200374081U CN201032297Y (en) | 2007-05-15 | 2007-05-15 | Pressure-bearing flat-plate solar collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201032297Y true CN201032297Y (en) | 2008-03-05 |
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ID=39164187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200374081U Expired - Lifetime CN201032297Y (en) | 2007-05-15 | 2007-05-15 | Pressure-bearing flat-plate solar collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201032297Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460778C (en) * | 2007-05-15 | 2009-02-11 | 江苏太阳雨太阳能有限公司 | Pressure-bearing type multi-medium flat-plate solar collector |
| CN102032615A (en) * | 2010-12-28 | 2011-04-27 | 梁长宁 | Solar heater |
-
2007
- 2007-05-15 CN CNU2007200374081U patent/CN201032297Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460778C (en) * | 2007-05-15 | 2009-02-11 | 江苏太阳雨太阳能有限公司 | Pressure-bearing type multi-medium flat-plate solar collector |
| CN102032615A (en) * | 2010-12-28 | 2011-04-27 | 梁长宁 | Solar heater |
| CN102032615B (en) * | 2010-12-28 | 2013-02-27 | 梁长宁 | Solar heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070515 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070515 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |