CN102767492B - Solar power generation and heat collection system - Google Patents
Solar power generation and heat collection system Download PDFInfo
- Publication number
- CN102767492B CN102767492B CN201210262948.5A CN201210262948A CN102767492B CN 102767492 B CN102767492 B CN 102767492B CN 201210262948 A CN201210262948 A CN 201210262948A CN 102767492 B CN102767492 B CN 102767492B
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- Prior art keywords
- light receiver
- concentrator
- heat
- directional light
- solar cell
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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
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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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
- Y02E10/47—Mountings or tracking
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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
Abstract
The invention relates to a light condenser which takes both power generation and heat supply demands into consideration and has high photoelectric and photo-thermal conversion efficiency. The solar power generation and heat collection system includes a light condenser for parallel superposition of light, and a parallel light receiver arranged adjacent to a condensing zone of the light condenser. The parallel light receiver includes a solar cell and a solar heat collection tube, which are back on to each other and integrally arranged. In need of solar power source, the solar cell of the parallel light receiver is opposed to the light reflection face of the light condenser; and in need of liquid heat source, the parallel light receiver is turned over so that the solar heat collection tube is opposed to the light reflection face of the light condenser. Since the light condenser is adopted, photoelectric conversion efficiency and photo-thermal conversion efficiency are high. Power supply or heat supply can be selected as required. As the light condenser is adopted, the photoelectric conversion efficiency or photo-thermal conversion efficiency is high.
Description
The application divides an application, the invention and created name < < solar generating heat collecting system > > of original application, application number: 201110085377.8, the applying date: on April 6th, 2011.
Technical field
The present invention relates to the technical field of solar energy light gathering and heat collecting and generating, specifically a kind of solar generating heat collecting system.
Background technology
Existing solar power generation or heating equipment often can only be realized single function, are using adstante febre, do not have external power to supplement; When generating, the waste heat of generation need to spend cost to dispel the heat.Solar cell does not have thermostatic control, and when sunny, ambient temperature is very high, solar cell Yin Wendu rises and causes generating efficiency to decline, and what have is even damaged.
How taking into account generating and heat supply, and make solar cell substantially keep constant temperature to guarantee its generating efficiency when generating, is the technical problem that this area will solve.
Summary of the invention
[0004] the technical problem to be solved in the present invention be to provide a kind of simple and reliable for structure, be suitable for selecting as required power supply or heat supply and photoelectricity or the higher solar generating heat collecting system of photo-thermal conversion efficiency.
For solving the problems of the technologies described above, solar generating heat collecting system provided by the invention, comprising: for the directional light receiver of the concentrator of light ray parallel stack and the optically focused band setting of contiguous this concentrator; Directional light receiver comprises: the solar cell being wholely set dorsad and solar energy heat collection pipe; When needs sun-generated electric power, the solar cell of directional light receiver is relative with the reflective surface of concentrator; When needs liquid thermal source, upset directional light receiver, so that described solar energy heat collection pipe is relative with the reflective surface of concentrator.Owing to having adopted concentrator, so photoelectricity or photo-thermal conversion efficiency are higher.
Described solar cell is located on a heat-dissipating cavity, this heat-dissipating cavity is connected with the heat exchange liquid pipeline in solar energy heat collection pipe by cooling liquid outlet or the cooling fluid entrance of end, the heat energy producing when making full use of solar cell power generation, and solar cell is played to cooling effect.
Described concentrator comprises: horizontal skeleton, be vertical at a pair of main framing on horizontal skeleton, be symmetrically set in horizontal skeleton both sides parabola skeleton, be located at main framing top directional light receiver, be located at many level crossings parallel with described directional light receiver on parabola skeleton.
Further, for improving the overall mechanical strength of concentrator, between the far-end of described parabola skeleton and the middle and upper part of described main framing, be provided with oblique pull reinforcement.Between the outside pars intermedia of described parabola skeleton and the middle and upper part of described main framing, be provided with parabola reinforcement, to improve the bonding strength of parabola skeleton and main framing.
Further, level crossing forms a level crossing group described in 2-5 bar, between adjacent level crossing group, has ventilative gap, can be fine ventilative, prevent the impact of strong wind on concentrator.
Further, the width of described level crossing is 45-75mm, so that the light focusing on receiver is a rectangle, and then makes the temperature of receiver heating surface more even.The two ends of described level crossing are installed press strip by level crossing and are located on parabola skeleton, with clamping plane mirror, and convenient installation simultaneously.
Solar cell can adopt common monocrystalline silicon battery or adopt gallium arsenide solar cell module, and gallium arsenide solar cell mould is located on described heat-dissipating cavity by ceramic substrate.The condenser lens adopting is biconvex lens.
The technique effect that the present invention has: in (1) solar generating heat collecting system of the present invention, on the optically focused band of concentrator, solar cell and solar energy heat collection pipe are wholely set dorsad; When needs sun-generated electric power, the solar cell of directional light receiver is relative with the reflective surface of concentrator; When needs liquid thermal source, upset directional light receiver, so that described solar energy heat collection pipe is relative with the reflective surface of concentrator.So it can select power supply or heat supply as required; Owing to having adopted concentrator, its photoelectricity or photo-thermal conversion efficiency are higher.(2) in concentrator, every glass-reflected light superposes, and makes the light that is superimposed to receiver heating surface be a rectangle, and then makes the temperature of receiver heating surface more even, be difficult for producing the situation of local overheating, guaranteed higher photoelectricity or photo-thermal conversion efficiency.(2) adopt level crossing as reflection, its production technology is simple, and low price maintains easily and keeps in repair, and any glass store all can be processed.The fiber-loss of concentrator additive process, can compensate by increasing level crossing way.(4) loss of concentrator additive process, can increase level crossing in both sides and compensate a part.(5) the parabola skeleton in concentrator adopts aluminium die casting or anti-purple modification PC or panel beating, all can produce by mould, unanimously good, is applicable to mass processing.(6) concentrator skeleton: form general frame by parabola skeleton, horizontal skeleton, main framing, directional light receiver, oblique pull reinforcement, parabola reinforcement etc., structural strength is good.(7) follow the tracks of support and adopt double-shaft tracking mechanism, horizontal rotary mechanism drive motors, electric pushrod motor adopt stepping motor, and adopt code-disc to detect, and guarantee tracking accuracy.Electric pushrod can be placed on left side also can be placed on right side.Adopt double-axis tracking, at horizontal angle and azimuth, all obtain the utilization of peak efficiency, than the efficiency of any uniaxiality tracking mode, exceed a lot, thereby make this biaxial tracking trough-type bracket be suitable for real-time accurate tracks sunlight.Employing stepping motor drives, and rapidly equipment is put into the position of windage minimum running into large wind energy.Guarantee device security.While running into heavy snow, equipment can be erected, anti-heavy snow overstocks, damage equipment.Employing stepping motor drives, and in tracking accuracy, is guaranteed.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below the specific embodiment by reference to the accompanying drawings of basis, the present invention is further detailed explanation, wherein
The perspective view of the solar generating heat collecting system in Fig. 1 embodiment;
Fig. 2 is the side structure schematic diagram of the described solar generating heat collecting system in Fig. 1;
Fig. 3 is the perspective view of the concentrator in Fig. 1;
Fig. 4 is the vertical view of described concentrator;
Fig. 5 is the side structure schematic diagram of described concentrator;
Fig. 6 is the another side structural representation of described concentrator;
Fig. 7 is the structural representation of the heat-dissipating cavity at gallium arsenide solar cell module place;
Fig. 8 is the A-A cross section view of Fig. 7;
Fig. 9 is another perspective view of described solar generating heat collecting system;
Figure 10 is the another side structural representation of described solar generating heat collecting system;
Figure 11 is the local structure for amplifying schematic diagram of described heat-dissipating cavity;
Figure 12 is at temperature during lower than 0 ℃, and the fin in described heat-dissipating cavity is opening up to store the structural representation of a small amount of conductive fluid between fin and the base plate of heat-dissipating cavity.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
As Fig. 1-10, the solar generating heat collecting system of the present embodiment comprises: for the directional light receiver 4 of the concentrator a of light ray parallel stack and the optically focused band setting of contiguous this concentrator a; Directional light receiver 4 comprises: the solar cell 4-1 being wholely set dorsad and solar energy heat collection pipe 4-2; When needs sun-generated electric power, the solar cell 4-1 of directional light receiver 4 is relative with the reflective surface of concentrator a; When needs liquid thermal source, upset directional light receiver 4, so that described solar energy heat collection pipe 4-2 is relative with the reflective surface of concentrator a.In other execution modes, directional light receiver 4 can adopt single solar cell or solar energy heat collection pipe.
Described solar cell 4-1 is located on a heat-dissipating cavity 11, and this heat-dissipating cavity 11 is connected with the heat exchange liquid pipeline in solar energy heat collection pipe 4-2 by the cooling liquid outlet 13 of end.As Fig. 1, during generating, water is A point by the cooling fluid entrance 16(of heat-dissipating cavity 11) enter, the cooling liquid outlet 13(of heat-dissipating cavity 11 is A ' point) be connected with one end (being B ' interface) of heat exchange liquid pipeline in solar energy heat collection pipe 4-2, flow through B ' the B section of heat exchange liquid pipeline, water temperature obtains entering lifting, then is flowed out by the another port (being B point) of heat exchange liquid pipeline, gets back in water tank.Thereby when solar cell working, heat exchange liquid plays the effect to solar cell cooling all the time, so substantially keep constant temperature when generating, and then guaranteed generating efficiency and useful life, prevent overheated situation.Heat exchange liquid is water or conduction oil.
As the execution mode of optimizing, between a plurality of concentrator a, the heat exchange liquid pipeline in solar energy heat collection pipe 4-2 is wherein series connection successively also; And heat exchange liquid preferred water is provided with temperature-sensing valve on the cold water source pipeline being connected with described heat exchange liquid pipeline, for controlling water temperature by controlling flow.
Described solar cell 4-1 is gallium arsenide solar cell module; On described heat-dissipating cavity 11, in the place ahead of each gallium arsenide solar cell module, be provided with condenser lens 12, to play further optically focused effect, further to improve photoelectric conversion efficiency.
For realizing sunshine tracking function, described concentrator a is located at one and is suitable on the tracking support of the motion tracking sun, and this tracking support comprises: column 21, be located at column 21 tops horizontal rotary mechanism 22, be located between the middle and upper part of the installing rack 23 on horizontal rotary mechanism 22, the front bottom end that is articulated with concentrator a and column 21 for controlling the electric pushrod 25 at the concentrator a elevation angle; The bottom center of concentrator a is articulated with on installing rack 23.
The push rod 25-1 top of described electric pushrod 25 and the front bottom end of concentrator a are hinged, and the guide pin bushing 25-2 middle and upper part in described electric pushrod 25 and the middle and upper part of column 21 are hinged by anchor ear 26.
Concentrator a comprises: horizontal skeleton 1, be located at main framing 2 on horizontal skeleton 1, be symmetrically set in horizontal skeleton 1 both sides parabola skeleton 3, be located at main framing 2 tops directional light receiver 4, be located at many level crossings 5 parallel with described directional light receiver 4 on parabola skeleton 3.The two ends of described level crossing 5 are installed press strip 8 by level crossing and are located on parabola skeleton 3.
Between the middle and upper part of the far-end of described parabola skeleton 3 and described main framing 2, be provided with oblique pull reinforcement 6.Between the outside pars intermedia of described parabola skeleton 3 and the middle and upper part of described main framing 2, be provided with parabola reinforcement 7.
The width of described level crossing 5 is 45-75mm.This level crossing is as reflection, and its production technology is simple, and low price maintains easily and keeps in repair, and any glass store all can be processed.
As Figure 11-12, the lower surface of the base plate 14 of described heat-dissipating cavity 11 is used for arranging solar cell 4-1, in heat-dissipating cavity 11, be provided with a plurality of parallel alternate fin 15 of being located at the upper surface of described base plate 14, each fin 15 is acute angle with the angle of described base plate 14; The top board 17 of the cooling fluid entrance 16 contiguous heat-dissipating cavities 11 of heat-dissipating cavity 11 arranges, and the contiguous described base plate 14 of described cooling liquid outlet 13 arranges.Due to when described solar cell 4-1 normally works, the temperature at described base plate 14 places is often higher, so making heat exchange liquid sends into from the top board 17 first cooling fluid entrances 16 of contiguous heat-dissipating cavity 11, and send from the cooling liquid outlet 13 of contiguous described base plate 14, can make the contact-making surface of heat exchange liquid and fin be flowed to higher temperatures place by lower temperature place,, fully heat exchange even to realize, guaranteed heat transfer effect.
The upright projection of adjacent fin 15 on described base plate 14 partially overlaps, so that have all the time conductive fluid on described base plate 14 upper surfaces, thereby can guarantee radiating effect, the infringement of moment high temperature to solar cell 4-1 that prevents from when described solar cell 4-1 from normally working producing.Between the top board of described fin and heat dissipation metal cavity, there is gap, so that the cold and hot abundant convection current of cooling fluid it is heated evenly.
Utilizing water to carry out when cooling, its ambient temperature is when subzero, can rotate described heat-dissipating cavity 11 and the opening direction of fin 15 is upwards arranged, automatically closing into Shui Chu, and making delivery port pump work very short time, to extract a part of water in heat-dissipating cavity 11 out, reserve enough spaces, even if water may freeze, volumetric expansion, can be by heat-dissipating cavity 11 bursting by freezing yet, a small amount of heat exchange liquid that heat-dissipating cavity 11 exists simultaneously also can prevent heat-dissipating cavity 11 excess Temperatures.
When normal power generation, by temperature detection, implement to control the water velocity in heat-dissipating cavity 11, to dispel the heat rapidly.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And these belong to apparent variation that spirit of the present invention extended out or change still among protection scope of the present invention.
Claims (1)
1. a solar generating heat collecting system, is characterized in that comprising: for the directional light receiver (4) of the concentrator (a) of light ray parallel stack and the optically focused band setting of contiguous this concentrator (a);
Directional light receiver (4) comprising: the solar cell being wholely set dorsad (4-1) and solar energy heat collection pipe (4-2);
When needs sun-generated electric power, the solar cell of directional light receiver (4) (4-1) is relative with the reflective surface of concentrator (a);
When needs liquid thermal source, upset directional light receiver (4), so that described solar energy heat collection pipe (4-2) is relative with the reflective surface of concentrator (a);
It is upper that described solar cell (4-1) is located at a heat-dissipating cavity (11), and this heat-dissipating cavity (11) is connected with the heat exchange liquid pipeline in solar energy heat collection pipe (4-2) by cooling liquid outlet (13) or the cooling fluid entrance (16) of end;
Described concentrator (a) comprising: horizontal skeleton (1), be vertical at a pair of main framing (2) on horizontal skeleton (1), be symmetrically set in horizontal skeleton (1) both sides parabola skeleton (3), be located at many level crossings (5) parallel with described directional light receiver (4) on parabola skeleton (3); Directional light receiver (4) is located at the top of described main framing (2), and one end of directional light receiver (4) is located in motor-driven rotating self-locking mechanism (4-3); Level crossing described in 2-5 bar (5) forms a level crossing group, between adjacent level crossing group, has ventilative gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210262948.5A CN102767492B (en) | 2011-04-06 | 2011-04-06 | Solar power generation and heat collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210262948.5A CN102767492B (en) | 2011-04-06 | 2011-04-06 | Solar power generation and heat collection system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110085377A Division CN102182656B (en) | 2011-04-06 | 2011-04-06 | Solar electric power generating heat collecting system |
Publications (2)
| Publication Number | Publication Date |
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| CN102767492A CN102767492A (en) | 2012-11-07 |
| CN102767492B true CN102767492B (en) | 2014-05-07 |
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| CN201210262948.5A Expired - Fee Related CN102767492B (en) | 2011-04-06 | 2011-04-06 | Solar power generation and heat collection system |
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| CN106487325A (en) * | 2016-11-25 | 2017-03-08 | 江苏科技大学 | A kind of electric coproduction multistage application device of groove type solar condensing thermal |
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| FR2844561B1 (en) * | 2002-09-16 | 2004-10-22 | Bernard Pierre Million | DEVICE FOR CAPTURING, CONCENTRATING AND TRANSFORMING SOLAR ENERGY INTO MECHANICAL AND ELECTRICAL ENERGY |
| CN101220997A (en) * | 2007-01-09 | 2008-07-16 | 张明伟 | Light wide-angle focusing solar power generation and heat collection technology |
| US20100186820A1 (en) * | 2008-11-10 | 2010-07-29 | Schon Steven G | Solar electricity generation with improved efficiency |
| CN101608606B (en) * | 2009-07-29 | 2011-10-19 | 中国科学技术大学 | Solar-energy low-temperature thermal power-generation and photovoltaic power-generation combination system |
| CN101783630B (en) * | 2009-12-08 | 2012-02-01 | 江苏中显集团有限公司 | Solar power generation heat collecting method and special device thereof |
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Owner name: SHANXI KEZHICHENG SCIENCE AND TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CHANGSHU FOCUS ON NEW ENERGY TECHNOLOGY CO., LTD. Effective date: 20140414 |
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