CN210157147U - Fold dull and stereotyped spotlight frequency division photovoltaic light and heat and utilize device - Google Patents
Fold dull and stereotyped spotlight frequency division photovoltaic light and heat and utilize device Download PDFInfo
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- CN210157147U CN210157147U CN201921509467.3U CN201921509467U CN210157147U CN 210157147 U CN210157147 U CN 210157147U CN 201921509467 U CN201921509467 U CN 201921509467U CN 210157147 U CN210157147 U CN 210157147U
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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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- 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
- Y02E10/52—PV systems with concentrators
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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
- Y02E10/60—Thermal-PV hybrids
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Abstract
The utility model relates to a folded plate light-gathering frequency-dividing photovoltaic photo-thermal utilization device, which comprises a solar cell panel, a folded plate light-gathering device, a frequency divider and a vacuum tube heat collector; the solar cell panel is located above the folded flat plate condenser and located at the condensing position of the folded flat plate condenser, the frequency divider is arranged on the upper surface of the folded flat plate condenser, the vacuum tube heat collector is located below the folded flat plate condenser, and the inlet of the vacuum tube heat collector is provided with the step phase-change material preheating tube.
Description
Technical Field
The utility model relates to a roll over dull and stereotyped spotlight frequency division photovoltaic light and heat and utilize device belongs to new forms of energy utilization technical field.
Background
With the great reduction of fossil fuels and the increase of harm to the nature, solar energy is used as an environment-friendly and endless energy source by more and more people, so that solar photovoltaic power generation is rapidly developed as a novel energy source mode. However, most of the photovoltaic cells used in the market have a general power generation efficiency of only about 20%, and almost 80% of solar energy is dissipated as heat energy while the photovoltaic cells generate power. Moreover, the photovoltaic cell absorbs the heat energy generated by the solar energy and has a certain damage effect on the cell.
Since the optimum operating temperature of the photovoltaic cell is generally about 25 ℃, the increase of the temperature will cause the reduction of the power generation efficiency of the cell assembly, thereby causing the increase of the power generation cost of the system, and meanwhile, the repeated temperature increase and reduction will also have a certain negative effect on the service life of the cell assembly.
At present, the integrated photovoltaic and photothermal device gradually becomes a new technology for solar energy utilization, and chinese patent CN106849865A proposes a integrated photovoltaic and photothermal system, which can reduce the temperature on the surface of the solar cell panel to a certain extent, but in the method, only cold and hot metal water pipes are added at two ends of the solar cell panel, and the technical scheme still has the following problems: the water pipes are positioned at two ends of the solar cell panel, so that the cooling effect on the solar cell panel is difficult to ensure; the effect of the solar energy reflected by the solar panel is far inferior to that of the reflector, so that the utilization rate of the solar energy is low; sunlight is directly irradiated on the solar cell panel, the temperature of the solar cell panel is quickly raised, and the service life of the solar cell panel is influenced. Moreover, in most of the existing patents, the utilization efficiency of the solar cell panel is improved, and medium cooling is mainly adopted, but the temperature is difficult to control due to weather reasons.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem that exists among the prior art, provide the utilization efficiency of improvement solar energy that can be very big, reduce the utilization cost of photovoltaic light and heat, realize the flat spotlight frequency division photovoltaic light and heat utilization equipment of book of electric heat coproduction purpose.
In order to achieve the above object, the utility model provides a technical scheme does: a folded flat plate light-gathering frequency-division photovoltaic photo-thermal utilization device comprises a solar cell panel, a folded flat plate light collector, a frequency divider and a vacuum tube heat collector; the solar cell panel is located above the folded flat plate condenser and at the condensing position of the folded flat plate condenser, the frequency divider is arranged on the upper surface of the folded flat plate condenser, the vacuum tube heat collector is located below the folded flat plate condenser, and a stepped phase change material preheating tube is arranged at the inlet of the vacuum tube heat collector.
The technical scheme is further designed as follows: the folding plate condenser is a reflecting lens with an arc-shaped longitudinal section.
The folded plate condenser is formed by splicing a plurality of plane reflecting lenses with different slopes.
The photovoltaic photo-thermal utilization device further comprises a re-reflecting lens, and the re-reflecting lens is arranged at the bottom of the solar cell panel.
The frequency divider is a light splitting film consisting of a spectrum selective transmission coating, and the light splitting film is coated on the upper surface of the folding plate condenser.
The vacuum tube heat collector also comprises an S-shaped vacuum heat collecting tube, the step phase change material preheating tube is communicated with one end of the vacuum heat collecting tube, and the other end of the vacuum heat collecting tube is communicated with an outlet of the vacuum tube heat collector.
The outer surface of the vacuum heat collecting pipe is coated with heat absorbing coating,
the photovoltaic photo-thermal utilization device further comprises a support frame, and the solar cell panel and the folding plate condenser are both arranged on the support frame.
The support frame includes base, bracing piece and rotary rod, roll over dull and stereotyped spotlight ware and fix in the bracing piece lower part, solar cell panel fixes on bracing piece upper portion, be equipped with the pivot on the bracing piece, the rotary rod top is articulated through pivot and bracing piece, the rotary rod bottom is passed through the bearing and is rotated the connection on the base. The vacuum tube heat collector is arranged at the top of the base, and a heat insulation board is arranged between the vacuum tube heat collector and the base.
The utility model has the advantages that:
the device forms relatively uniform isocandela faculae through the light condensation effect of the reflecting light refraction flat plate, and stronger and denser light energy promotes the photoelectric conversion efficiency of the solar cell panel.
The solar energy is utilized in two parts under the action of the frequency divider, one part of sunlight is gathered to the solar cell panel through the reflection light flat plate to react, the other part of sunlight is transmitted to the vacuum tube heat collector to be utilized, the surface temperature and the temperature rising speed of the solar cell panel are reduced by reducing the amount of the sunlight irradiating the solar cell panel, the power generation efficiency is improved, and meanwhile the service life of the solar cell panel is prolonged.
Because the solar panel cannot utilize all the sunlight even if the sunlight irradiates the solar panel and is influenced by the power generation efficiency, the invention can effectively utilize the heat which can only be wasted originally and can bring high-temperature damage to the solar panel by dividing the sunlight into two parts, and avoids the overhigh temperature of the solar panel while not influencing the power generation efficiency of the solar panel.
The utility model discloses set up step phase change material preheating tube at vacuum tube heat collector cold water inlet pipeline section, preheat cold water, can prevent that the supercooled water from leading to the booster behind the very high evacuated collector tube of entering temperature, increased the vacuum heat collector life-span.
The utility model discloses a difficult problem such as solar photovoltaic generating efficiency is low, with high costs has effectively been solved to can avoid the waste scheduling problem of heat energy, the utility model discloses a device novel structure, simple reliable, safe high-efficient, the practicality is strong.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic view of the evacuated tube collector of FIG. 1;
FIG. 3 is a schematic diagram of the incident trajectory of sunlight;
fig. 4 is a schematic structural diagram of a second embodiment of the present invention.
In the figure: 1. a folded plate condenser; 2. a frequency divider; 3. a vacuum tube heat collector; 4. a solar panel; 5. a re-reflective lens; 6. a step phase change material preheating pipe; 7. a support frame; 71. a base; 72. rotating the rod; 73. a support bar; 8. a rotating shaft; 9. a vacuum heat collecting tube; 10. a cold water inlet; 11. a hot water outlet; 12. a heat insulation board.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example one
The folded flat plate concentrating and frequency dividing photovoltaic photo-thermal utilization device of the embodiment mainly comprises a folded flat plate concentrator 1, a solar cell panel 4, a frequency divider 2, a vacuum tube heat collector 3 and a support frame 7, as shown in fig. 1. The solar cell panel 4 is located above the folded flat plate condenser 1 and at the light condensation position of the folded flat plate condenser 1, the frequency divider 2 is arranged on the upper surface of the folded flat plate condenser 1, and the vacuum tube heat collector 3 is located below the folded flat plate condenser. The solar cell panel 4, the folded flat plate condenser 1 and the vacuum tube heat collector 3 are all arranged on the support frame 7.
The flat plate condenser 1 of rolling over in this embodiment is curved reflection lens for the longitudinal section, and the radian and the mounted position of rolling over flat plate condenser 1 are confirmed according to solar cell panel 4's width, mounting height, installation inclination, guarantee to shine to be rolled over light on flat plate condenser 1 and reflected to solar cell panel 4 by the gathering, and flat plate condenser 1 of rolling over is installed in the support frame top with certain radian, is the low high trend in the right side in a left side.
In this embodiment, the frequency divider 2 is a light splitting film formed by a spectrum selective transmission coating. In this embodiment, a frequency divider is designed by using a Needle method, and Nb is used2O3And TiO2As a high refractive index material, SiO2As a low-emissivity material, and matched with a certain proportion, the material meets the requirements of spectral reflectivity close to 100% between the wavelength of 0.25 mu m and 1.1 mu m and spectral transmissivity close to 100% when the wavelength exceeds 1.1 mu m; the light splitting film is coated on the upper surface of the folding flat plate condenser 1, part of sunlight containing more light energy is reflected to the solar cell panel 4, and the other part of sunlight containing more heat energy is irradiated to the vacuum tube heat collector 3 positioned below the folding flat plate condenser 1 through the light splitting film and the folding flat plate condenser 1.
Referring to fig. 2, in the present embodiment, the evacuated tube collector 3 is disposed below the folded flat plate condenser 1, and includes a cold water inlet 10, a step phase change material preheating tube 6, an evacuated collector tube 9, and a hot water outlet 11, which are connected in sequence; the cold water inlet 10 is a straight pipe section, the middle of the cold water inlet is connected with the step phase change material preheating pipe 6, the phase change material on the step phase change material preheating pipe 6 is compounded by a porous carbon material and fatty acid, the mass fraction ratio is that the mass fraction of the carbon material is 10-30%, the temperature control of 60-90 ℃ can be met, the step phase change material preheating pipe 6 is used for preheating cold water flowing into the cold water inlet 10 to prevent the cold water from entering the vacuum heat collecting pipe 9 and causing pipe explosion, and the surface of the vacuum heat collecting pipe 9 is coated with heat absorption coating.
The support frame 7 comprises a base 71, a rotating rod 72 and a supporting rod 73, the supporting rod 73 is in an L shape, the folding plate condenser 1 is fixed at the lower part of the supporting rod 73, the solar panel 4 is fixed at the upper part of the supporting rod 73, the supporting rod 73 is also provided with a rotating shaft 8, the top of the rotating rod 72 is hinged with the supporting rod 73 through the rotating shaft 8, the bottom of the rotating rod 72 is rotatably connected to the base 71 through a bearing, so that the folding plate condenser 1 and the solar panel 4 can rotate in the horizontal plane by rotating the rotating rod 72, the folding plate condenser 1 and the solar panel 4 can rotate in the vertical plane by rotating the supporting rod 73, the support frame 7 can also be provided with an automatic solar tracking device, the rotation of the supporting rod 73 and the rotating rod 72 can be controlled by the automatic solar tracking device, thereby the direction of the folding plate condenser 1 can be adjusted, and the horizontal plane, as shown in fig. 3.
Vacuum tube heat collector 3 sets up on base 71, and base 71 top is equipped with curved adiabatic heated board 12, and vacuum tube heat collector 3 sets up on adiabatic heated board 12, and the thermal loss of reducible vacuum tube heat collector 3 of adiabatic heated board 12 and incident sunlight.
Example two
Referring to fig. 4, the structure of the folded flat plate concentrating and frequency dividing photovoltaic photo-thermal utilization device of the present embodiment is substantially the same as that of the first embodiment, except that: the bottom of the solar cell panel 4 is coated with the re-reflecting lens 5, because the frequency divider 2 cannot completely transmit sunlight with a wavelength exceeding 1.1 μm, part of the sunlight in the wavelength range is reflected to the solar cell panel 4 together, and the re-reflecting lens 5 is used for re-reflecting the part of the sunlight to the frequency divider 2 for recycling.
In this embodiment, the folding plate condenser 1 is formed by splicing a plurality of plane reflection lenses with different slopes.
The specific working principle is as follows: when sunlight vertically enters, light rays are reflected by the frequency divider 2 on the folding plate condenser 1 and are converged on the surface of the solar cell panel 4 to form relatively uniform isocandela faculae, so that the uniform distribution of the radiation energy flux density on the solar cell panel 4 can be ensured. The reflection light refraction flat plate is plated with a light splitting film, when sunlight is incident on the light splitting film 2, one part of light is reflected to the photovoltaic cell panel 4 by the light splitting film 2 to respond, the other part of light penetrates through the light splitting film 2 to the vacuum tube heat collector 3, and water or heat conduction oil in the vacuum tube heat collector 3 absorbs solar radiation entering the vacuum tube heat collector 3 and heat conduction of the refraction flat plate reflection condenser to raise the temperature so as to utilize heat; because the light receiving surface of the solar cell panel 4 is arranged downwards, sunlight cannot directly irradiate the solar cell panel 4, the solar cell panel 4 only receives partial sunlight reflected by the frequency divider 2, the heat received by the solar cell panel 4 is less, the temperature rise is slow, the temperature is low, and the service life is long.
The technical scheme of the utility model is not limited to above-mentioned each embodiment, and the technical scheme that all adopt to equate substitution mode to obtain all falls the utility model discloses the within range that claims.
Claims (10)
1. The utility model provides a roll over dull and stereotyped spotlight frequency division photovoltaic light and heat and utilize device which characterized in that: the solar energy heat collector comprises a solar cell panel, a folded flat plate condenser, a frequency divider and a vacuum tube heat collector; the solar cell panel is located above the folded flat plate condenser and at the condensing position of the folded flat plate condenser, the frequency divider is arranged on the upper surface of the folded flat plate condenser, the vacuum tube heat collector is located below the folded flat plate condenser, and a stepped phase change material preheating tube is arranged at the inlet of the vacuum tube heat collector.
2. The folding plate concentrating and frequency dividing photovoltaic photo-thermal utilization device as claimed in claim 1, wherein: the folding plate condenser is a reflecting lens with an arc-shaped longitudinal section.
3. The folding plate concentrating and frequency dividing photovoltaic photo-thermal utilization device as claimed in claim 1, wherein: the folded plate condenser is formed by splicing a plurality of plane reflectors with different slopes.
4. The folding plate concentrating and frequency dividing photovoltaic photo-thermal utilization device as claimed in claim 2 or 3, wherein: the solar cell panel further comprises a re-reflecting lens, and the re-reflecting lens is arranged at the bottom of the solar cell panel.
5. The folded flat plate concentrating and frequency dividing photovoltaic photo-thermal utilization device as claimed in claim 4, wherein: the frequency divider is a light splitting film consisting of a spectrum selective transmission coating, and the light splitting film is coated on the upper surface of the folding plate condenser.
6. The folding plate concentrating and frequency dividing photovoltaic photo-thermal utilization device as claimed in claim 1, wherein: the vacuum tube heat collector also comprises an S-shaped vacuum heat collecting tube, the step phase change material preheating tube is communicated with one end of the vacuum heat collecting tube, and the other end of the vacuum heat collecting tube is communicated with an outlet of the vacuum tube heat collector.
7. The folded flat plate concentrating and frequency dividing photovoltaic photo-thermal utilization device as claimed in claim 6, wherein: and the outer surface of the vacuum heat collecting pipe is coated with heat absorbing coating.
8. The folding plate concentrating and frequency dividing photovoltaic photo-thermal utilization device as claimed in claim 1, wherein: the solar cell panel and the folding plate condenser are both arranged on the support frame.
9. The folded flat plate concentrating and frequency dividing photovoltaic photo-thermal utilization device as claimed in claim 8, wherein: the support frame includes base, bracing piece and rotary rod, roll over dull and stereotyped spotlight ware and fix in the bracing piece lower part, solar cell panel fixes on bracing piece upper portion, be equipped with the pivot on the bracing piece, the rotary rod top is articulated through pivot and bracing piece, the rotary rod bottom is passed through the bearing and is rotated the connection on the base.
10. The folded flat plate concentrating and frequency dividing photovoltaic photo-thermal utilization device as claimed in claim 9, wherein: the vacuum tube heat collector is arranged at the top of the base, and a heat insulation board is arranged between the vacuum tube heat collector and the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921509467.3U CN210157147U (en) | 2019-09-11 | 2019-09-11 | Fold dull and stereotyped spotlight frequency division photovoltaic light and heat and utilize device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921509467.3U CN210157147U (en) | 2019-09-11 | 2019-09-11 | Fold dull and stereotyped spotlight frequency division photovoltaic light and heat and utilize device |
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| Publication Number | Publication Date |
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| CN210157147U true CN210157147U (en) | 2020-03-17 |
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| CN201921509467.3U Active CN210157147U (en) | 2019-09-11 | 2019-09-11 | Fold dull and stereotyped spotlight frequency division photovoltaic light and heat and utilize device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492843A (en) * | 2019-09-11 | 2019-11-22 | 国电环境保护研究院有限公司 | A kind of folding flat-plate concentration frequency division photovoltaic photo-thermal utilizes device |
-
2019
- 2019-09-11 CN CN201921509467.3U patent/CN210157147U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492843A (en) * | 2019-09-11 | 2019-11-22 | 国电环境保护研究院有限公司 | A kind of folding flat-plate concentration frequency division photovoltaic photo-thermal utilizes device |
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