CN104320074A - Fresnel type concentrating photovoltaic photo-thermal component - Google Patents
Fresnel type concentrating photovoltaic photo-thermal component Download PDFInfo
- Publication number
- CN104320074A CN104320074A CN201410586434.4A CN201410586434A CN104320074A CN 104320074 A CN104320074 A CN 104320074A CN 201410586434 A CN201410586434 A CN 201410586434A CN 104320074 A CN104320074 A CN 104320074A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- photovoltaic
- water cooling
- groove
- photovoltaic cell
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 37
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000741 silica gel Substances 0.000 claims abstract description 5
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000003287 optical effect Effects 0.000 abstract description 6
- 239000000498 cooling water Substances 0.000 description 9
- 239000002131 composite material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000218202 Coptis Species 0.000 description 1
- 235000002991 Coptis groenlandica Nutrition 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
-
- 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
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention relates to a Fresnel type concentrating photovoltaic photo-thermal component comprises a Fresnel lens, an aluminum light funnel, a secondary optical prism, a photovoltaic cell module and a channel type water cooling heat exchanger. The channel type water cooling heat exchanger is in a channel type short pipe shape. The outer portion of a short pipe on one side is directly connected with a radiating platform in the axial direction. The aluminum light funnel is a hollow prism frustum, the lower end of the aluminum light funnel is connected with the lower end of the secondary optical prism which is a pyramid frustum, and the lower end of the secondary optical prism is connected with a photovoltaic cell on the top face of the photovoltaic cell module. The bottom face of the photovoltaic cell is connected with the radiating platform of the channel type water cooling heat exchanger through heat conducting silica gel. Sunlight is concentrated through the Fresnel lens and is evenly projected to the photovoltaic cell through the aluminum light funnel and the secondary optical prism, and photovoltaic conversion is achieved. The channel type water cooling heat exchanger is arranged below the photovoltaic cell module, the temperature of the photovoltaic cell can be effectively lowered, photovoltaic conversion efficiency is improved, meanwhile, heat is taken away through water, and extra heat energy is collected.
Description
Technical field
The invention belongs to photovoltaic and photothermal solar technical field of comprehensive utilization, be specifically related to a kind of Fresnel concentrating photovoltaic photo-thermal assembly.
Background technology
Solar energy is as one of the important substitute of traditional energy, and because its renewable and free of contamination feature has received great attention, wherein solar energy photovoltaic utilization and solar thermal utilization are two importances of Solar use.In solar energy photovoltaic utilization, improving one of effective way of solar energy power generating efficiency is the intensity of illumination that raising photovoltaic cell receives, and namely adopts spot mode.Salar light-gathering mode has a lot, current comparative maturity have slot-type optical collector, dish-style concentrator, compound parabolic concentrator and Fresnel concentrator etc.These concentrators can make focus or focal plane place obtain the irradiation intensity of several times to the thousands of times of sun, also can produce the heat of high heat flux in focus or focal plane place simultaneously.After photovoltaic cell absorbs solar irradiation, battery temperature can raise rapidly, thus photoelectric conversion efficiency can be caused to decline.Also can accelerate the aging of photovoltaic cell under being in the state compared with elevated operating temperature for a long time, even cause the permanent damage of photovoltaic cell.Therefore, in solar energy photovoltaic utilization, during particularly solar energy high power concentrating photovoltaic utilizes, be the key measure ensureing solar photovoltaic conversion efficiency to the good cooling of photovoltaic cell.
Fresnel concentrator utilizes Fresnel Lenses optical element to be converged to by sunlight on the very little battery of area, reduces the cell area at focal spot place in this way, increases the light intensity on battery with identical ratio simultaneously.In order to carry out good cooling to photovoltaic cell, usually pasting at cell backside or welding radiating element and taking away heat.In Fresnel concentration photovoltaic receiver, conventional heat exchange cooling device many by copper or aluminium as heat exchange material, make the radiating element of outside straight ribbed, contact with photovoltaic module, take away heat by the convection action of air, realize cooling object.Although the radiator of this structure can play certain heat exchange cooling effect, comparatively large by such environmental effects, under the weather condition of sweltering heat, be difficult to the temperature effectively reducing battery, and be difficult to reach instantaneously cooled heat transfer effect.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of Fresnel concentrating photovoltaic photo-thermal assembly is provided, high-efficient solar photovoltaic cell work can be ensured, and collect extra heat energy simultaneously.
A kind of Fresnel concentrating photovoltaic photo-thermal assembly comprises Fresnel Lenses 1, aluminum light funnel 2, secondary optics prism 3, photovoltaic battery module 4 and groove-type water cooling heat exchanger 6, described groove-type water cooling heat exchanger 6 is groove-type short tube shape, and the outside of side short tube is directly connected with cooling platform vertically; Be laid with conduit 10 vertically in the short tube of described groove-type water cooling heat exchanger 6, be protruding straight rib 11 between adjacent conduit 10, water inlet 7 and the delivery port 8 of groove-type water cooling heat exchanger 6 are screwed pipe; Described aluminum light funnel 2 is hollow up big and down small truncated rectangular pyramids, and the bottom surface of its upper end and Fresnel Lenses 1 keeps certain distance, and its lower end is connected to the lower end of secondary optics prism 3; Described secondary optics prism 3 is up big and down small truncated rectangular pyramids, and its lower end is connected to the photovoltaic cell 12 on the end face of photovoltaic battery module 4, and the underrun heat conductive silica gel 5 of photovoltaic battery module 4 is connected to the cooling platform of groove-type water cooling heat exchanger 6; The width of the straight rib 11 of described projection is no more than 1/3 of the width of conduit 10, and the height of straight rib 11 is no more than 1/6 of described internal diameter of the pipeline.
Distance between the bottom surface of described Fresnel Lenses 1 and aluminum light funnel 2 lower end is the focal length of Fresnel Lenses 1, and the height of described aluminum light funnel 2 is no more than 1/5 of Fresnel Lenses 1 focal length.
Advantageous Effects of the present invention embodies in the following areas:
(1) Fresnel concentrating photovoltaic photo-thermal assembly of the present invention can realize the comprehensive utilization of solar energy, collects extra heat energy, greatly improve the utilization ratio of solar energy while guarantee generating efficiency.Carry out actual measurement for Fresnel concentrating photovoltaic photo-thermal assembly of the present invention to find, when using GaAs three junction battery as photovoltaic cell, during using water as coolant, while ensureing that generating efficiency remains unchanged and even improves, solar energy thermal conversion efficiency can be realized and reaches 45%;
(2) Fresnel concentrating photovoltaic photo-thermal assembly of the present invention adopts groove-type structural design, in the short tube of wherein groove-type water cooling heat exchanger 6, the width of straight rib 11 is no more than 1/3 of the width of conduit 10 vertically, the height of straight rib 11 is no more than 1/6 of internal diameter of the pipeline, such structural design both ensure that the Uniform Flow of cooling water, in turn ensure that and too can not increase flow resistance.Straight rib 11 adds the contact area of cooling water and heat exchanger, causes disturbance to cooling water simultaneously, improves convection transfer rate.Actual measurement shows, for Fresnel concentrating photovoltaic photo-thermal assembly of the present invention, when minor tube inner diameter is 26.4mm, straight rib 11 width is 2mm, be highly 4.2mm, when conduit 10 width is 8.4mm, cooling water flow changes in the scope of 0.02 ~ 0.12kg/s, single component flow passage resistance force of waterproof is almost without increasing compared with the smooth short tube of same inner diameter, and pipeline Composite Walls improves about 2 times; This shows that flow increases, and flow resistance there is no obvious increase, and pipeline Composite Walls and flow have nothing to do, and pipeline Composite Walls calculates gained by pipeline configuration;
(3) Fresnel concentrating photovoltaic photo-thermal assembly of the present invention can realize the separate connection in circuit and water route between each receiver, convenient installation and component design.
Accompanying drawing explanation
Fig. 1 is the structural representation of each isolation of components of the present invention.
Fig. 2 is the partial schematic diagram of photovoltaic cell and secondary optics prism.
Fig. 3 is partial schematic diagram and 1/4 cutaway view of groove-type water cooling heat exchanger.
Sequence number in upper figure: Fresnel Lenses 1, aluminum light funnel 2, secondary optics prism 3, photovoltaic battery module 4, heat conductive silica gel 5, groove-type water cooling heat exchanger 6, water inlet 7, delivery port 8, internal thread interface 9, conduit 10, straight rib 11, photovoltaic cell 12.
Embodiment
In order to explain technical scheme of the present invention further, below in conjunction with accompanying drawing, by embodiment, the present invention is further described.
See Fig. 1, a kind of Fresnel concentrating photovoltaic photo-thermal assembly comprises Fresnel Lenses 1, aluminum light funnel 2, secondary optics prism 3, photovoltaic battery module 4 and groove-type water cooling heat exchanger 6, wherein groove-type water cooling heat exchanger 6 is groove-type short tube shape, and one end of groove-type short tube is internal thread interface 9, and there is square cooling platform the outside, side of groove-type short tube vertically straight forming.Aluminum light funnel 2 is hollow up big and down small truncated rectangular pyramids, and the bottom surface of its upper end and Fresnel Lenses 1 keeps certain distance, and its lower end is connected to the lower end of secondary optics rib 3.Distance between the bottom surface of Fresnel Lenses 1 and aluminum light funnel 2 lower end is the focal length of Fresnel Lenses 1, and the height of aluminum light funnel 2 is no more than 1/5 of Fresnel Lenses 1 focal length.In the present embodiment, the focal length of Fresnel Lenses 1 is 0.64m, and the corresponding aluminum light hopper level adopted is 0.1m.See Fig. 3, conduit 10 is vertically laid with in the short tube of groove-type water cooling heat exchanger 6, be protruding straight rib 11 between adjacent conduit 10, the width of protruding straight rib 11 is no more than 1/3 of the width of conduit 10, and the height of straight rib 11 is no more than 1/6 of minor tube inner diameter.Water inlet 7 and the delivery port 8 of groove-type water cooling heat exchanger 6 are screwed pipe.Wherein water inlet 7 connects water inlet pipe, and delivery port 8 connects outlet pipe.See Fig. 2, secondary optics prism 3 is up big and down small truncated rectangular pyramids, and its lower end is connected to the photovoltaic cell on the end face of photovoltaic battery module 4; Shape, the size of the shape of the lower surface of secondary optics prism 3, size and photovoltaic cell 12 are identical, and photovoltaic cell 12 is welded on cell substrates by gold thread, jointly form photovoltaic battery module 4.The underrun heat conductive silica gel 5 of photovoltaic battery module 4 is connected to the cooling platform of groove-type water cooling heat exchanger 6.
In the present embodiment, the minor tube inner diameter of groove-type water cooling heat exchanger 6 is 26.4mm, straight rib 11 width is 2mm, be highly 4.2mm, when conduit 10 width is 8.4mm, cooling water flow changes in the scope of 0.02 ~ 0.12kg/s, single component flow passage resistance force of waterproof is almost without increasing compared with the smooth short tube of same inner diameter, and pipeline Composite Walls improves 2.2 times; When the sunlight of direct projection is after Fresnel Lenses 1 reflects, enters aluminum light funnel 2 and reflected, then reflecting via secondary optics prism 3, being incident upon equably on photovoltaic cell 12, and then transform light energy is become electric energy.Groove-type water cooling heat exchanger 6 below photovoltaic battery module 4, effectively can reduce the temperature of photovoltaic cell, improves photoelectric conversion efficiency, utilizes water to be taken away by heat simultaneously, collect extra heat energy.
Water inlet 7 and the delivery port 8 at the axial two ends of short tube of groove-type water cooling heat exchanger 6 of the present invention directly can pass through standardized element connecting tube, and connection in series-parallel can be realized as required between multiple receiver and freely connect, and ensure that the independence that circuit is connected with water route.Cooling water enters from the water inlet 7 of groove-type water cooling heat exchanger 6, flows out from delivery port 8, and cooling water can not be stagnated in local, amount of localized heat can be taken away instantaneously, realizes lowering the temperature rapidly.If break down, such as, when cooling water circulation interrupts suddenly, in heat exchanger of the present invention, still can store the cooling water of certain capacity, thus available protecting photovoltaic cell, race against time for fixing a breakdown.
Claims (4)
1. a Fresnel concentrating photovoltaic photo-thermal assembly, comprise Fresnel Lenses (1), aluminum light funnel (2), secondary optics prism (3), photovoltaic battery module (4) and groove-type water cooling heat exchanger (6), described groove-type water cooling heat exchanger (6) is groove-type short tube shape, and the outside, side of groove-type short tube is directly connected with cooling platform vertically; Be laid with conduit (10) vertically in the short tube of described groove-type water cooling heat exchanger (6), be protruding straight rib (11) between adjacent conduit (10), water inlet (7) and the delivery port (8) of groove-type water cooling heat exchanger (6) are screwed pipe; Described aluminum light funnel (2) is hollow up big and down small truncated rectangular pyramids, and the bottom surface of its upper end and Fresnel Lenses (1) maintains distance, and its lower end is connected to the lower end of secondary optics prism (3); Described secondary optics prism (3) is up big and down small truncated rectangular pyramids, its lower end is connected to the photovoltaic cell (12) on the end face of photovoltaic battery module (4), and the underrun heat conductive silica gel (5) of photovoltaic battery module (4) is connected to the cooling platform of groove-type water cooling heat exchanger (6).
2. a kind of Fresnel concentrating photovoltaic photo-thermal assembly according to claim 1, is characterized in that: shape, the size of the shape of the lower surface of secondary optics prism (3), size and photovoltaic cell (12) are identical.
3. a kind of Fresnel concentrating photovoltaic photo-thermal assembly according to claim 1 and 2, it is characterized in that: the width of the straight rib (11) of described projection is no more than 1/3 of the width of conduit (10), and the height of straight rib (11) is no more than 1/6 of described internal diameter of the pipeline.
4. a kind of Fresnel concentrating photovoltaic photo-thermal assembly according to claim 1 and 2, it is characterized in that: the distance between the bottom surface of described Fresnel Lenses (1) and aluminum light funnel (2) lower end is the focal length of Fresnel Lenses (1), and the height of described aluminum light funnel (2) is no more than 1/5 of Fresnel Lenses (1) focal length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410586434.4A CN104320074A (en) | 2014-10-29 | 2014-10-29 | Fresnel type concentrating photovoltaic photo-thermal component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410586434.4A CN104320074A (en) | 2014-10-29 | 2014-10-29 | Fresnel type concentrating photovoltaic photo-thermal component |
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| CN104320074A true CN104320074A (en) | 2015-01-28 |
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|---|---|---|---|
| CN201410586434.4A Pending CN104320074A (en) | 2014-10-29 | 2014-10-29 | Fresnel type concentrating photovoltaic photo-thermal component |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682855A (en) * | 2015-02-10 | 2015-06-03 | 武汉理工大学 | Integrated concentrated solar photo-thermal composite utilization assembly |
| CN104821780A (en) * | 2015-05-13 | 2015-08-05 | 江苏亚星波纹管有限公司 | High conversion rate photovoltaic power generation unit |
| CN107356413A (en) * | 2017-08-28 | 2017-11-17 | 广东工业大学 | Fresnel mirror detection means |
| TWI695577B (en) * | 2018-08-03 | 2020-06-01 | 聖約翰科技大學 | Light funnel with incident wide-angle energy gathering and no glare |
| CN111262522A (en) * | 2020-03-11 | 2020-06-09 | 常州大学 | Spray cooling type Fresnel light-gathering combined heat and power system |
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| CN201478329U (en) * | 2009-06-29 | 2010-05-19 | 厦门爱劳德光电有限公司 | Solar energy collecting system composed of prism and Fresnel lens |
| CN102487092A (en) * | 2010-12-03 | 2012-06-06 | 西安中科麦特电子技术设备有限公司 | High-power spotlighting solar photovoltaic module |
| WO2014000895A1 (en) * | 2012-06-29 | 2014-01-03 | Gpc International S.A. | Device for receiving solar energy and method for producing electricity and heating a fluid simultaneously |
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2014
- 2014-10-29 CN CN201410586434.4A patent/CN104320074A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101355114A (en) * | 2008-09-24 | 2009-01-28 | 江苏白兔科创新能源股份有限公司 | Condensation photovoltaic electrification CPV die set |
| CN201478329U (en) * | 2009-06-29 | 2010-05-19 | 厦门爱劳德光电有限公司 | Solar energy collecting system composed of prism and Fresnel lens |
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| WO2014000895A1 (en) * | 2012-06-29 | 2014-01-03 | Gpc International S.A. | Device for receiving solar energy and method for producing electricity and heating a fluid simultaneously |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682855A (en) * | 2015-02-10 | 2015-06-03 | 武汉理工大学 | Integrated concentrated solar photo-thermal composite utilization assembly |
| CN104821780A (en) * | 2015-05-13 | 2015-08-05 | 江苏亚星波纹管有限公司 | High conversion rate photovoltaic power generation unit |
| CN107356413A (en) * | 2017-08-28 | 2017-11-17 | 广东工业大学 | Fresnel mirror detection means |
| CN107356413B (en) * | 2017-08-28 | 2024-03-26 | 广东工业大学 | Fresnel mirror detection device |
| TWI695577B (en) * | 2018-08-03 | 2020-06-01 | 聖約翰科技大學 | Light funnel with incident wide-angle energy gathering and no glare |
| CN111262522A (en) * | 2020-03-11 | 2020-06-09 | 常州大学 | Spray cooling type Fresnel light-gathering combined heat and power system |
| CN111262522B (en) * | 2020-03-11 | 2023-12-08 | 常州大学 | Spray cooling type Fresnel condensation cogeneration system |
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Application publication date: 20150128 |