CN202083827U - Solar secondary concentrating frequency division device based on dish concentrating - Google Patents
Solar secondary concentrating frequency division device based on dish concentrating Download PDFInfo
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- CN202083827U CN202083827U CN2011200473187U CN201120047318U CN202083827U CN 202083827 U CN202083827 U CN 202083827U CN 2011200473187 U CN2011200473187 U CN 2011200473187U CN 201120047318 U CN201120047318 U CN 201120047318U CN 202083827 U CN202083827 U CN 202083827U
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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
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses a disc type condensation based solar energy secondary condensation frequency division apparatus. The middle of a revolution paraboloid disc type reflector is provided with a light hole, the two sides along the axis of the disc type reflector are respectively provided with a condensing photovoltaic cell panel and an inlet of a heat collector below the light hole; a frequency division lens is arranged at a position above the light hole, the distance between the position and the vertex of the disc type reflector is certain, one curved surface of the frequency division lens near the disc type reflector is pasted with a frequency division film, another curved surface of the frequency division lens far from the disc type reflector is a silver mirror reflector, a supporting rod is arranged between the disc type reflector and the frequency division lens, a support is arranged below the disc reflector, the support is provided with a double-shaft tracking system, and the whole system is arranged on a rotary base plate. According to the utility model, solar energy condensation frequency division is realized, two condensation focal spots are transferred below the system, the energy consumption for the system to trace the sun is effectively reduced, the balance and anti-wind property of the system are improved, and the condensation ratios of two beams can be respectively adjusted, thus satisfying the optimal condensation intensity requirement of the condensation photovoltaic cell panel and the heat collector.
Description
Technical field
The utility model relates to the solar energy generation technology field, relates in particular to a kind of sun power secondary condensation frequency divider based on dish formula optically focused.
Background technology
Global solar radiation amount about 1.7 * 10
17W, wherein China accounts for 1%(1.8 * 10
15W is equivalent to 1.9 trillion tons of mark coal/years), be present year 680 times of total energy consumption of China.Electric power is the secondary energy of consumption maximum in the world, and solar energy generation technology is an effective means of alleviating current energy crisis, and application prospect is extremely wide.
Solar energy generation technology mainly is divided into photovoltaic generation and photo-thermal power generation two big classes.Photovoltaic generation mainly is to utilize the photoelectric effect of photovoltaic battery panel to generate electricity.The main at present three big shortcomings that exist of this technology: (1) generated output changes with sunlight intensity, can not generate electricity fully with overcast and rainy at night, electrical network is impacted big; (2) the sunshine current density is low, and the required photovoltaic battery panel area of unit generating capacity is big, and the photovoltaic cell board manufacturing process is seriously polluted, cost is very high; (3) photovoltaic battery panel mainly concentrates on high-frequency short waves zone (400＜λ＜1100 nm) to the response wave band of solar spectral, the energy of low frequency Long wavelength region then major part is converted into heat, causes the rising of photovoltaic cell plate temperature, photoelectric transformation efficiency reduction, serviceable life to shorten.The usable floor area, the employing divided thin film frequency method that adopt the concentrating photovoltaic power generation method can reduce photovoltaic battery panel at double shine photovoltaic battery panel after the low frequency long wave in the sunshine is separated again, are two important directions of present photovoltaic power generation technology; For discontinuous problem round the clock, photovoltaic power generation technology itself is difficult to overcome, and mainly relies on supporting the replenishing of accumulator or energy storage power generation system (as storage station etc.), and cost is very high.
The photo-thermal power generation technology is mainly to be to utilize parabolic mirror (or Fresnel mirror) that sunshine is gathered together, and produces steam or heating fluid driveable engine (as steam turbine, Stirling-electric hybrid etc.) is generated electricity by photo-thermal conversion and heat-exchanger rig; Its advantage is that this technology can absorb full wave sunshine, can realize uninterruptable power generation round the clock by accumulation of heat.Parabolic mirror mainly is divided into slot type, tower and dish formula three major types.Wherein, the slot type mirror is that sunshine is accumulated on the line parallel with minute surface, and this technology is only carried out the one dimension tracking to sunshine, and the sun power utilization ratio is lower.Tower optically focused normally utilizes thousands of (or more) individual heliostats sunshine to be accumulated on the heat collector on high tower top, and this system's floor area is big, and the orientation of each heliostat and curved surface are all inequality, the control system complexity.Dish formula optically focused is made up of integral body rotation parabolic minute surface or multiaspect mirror usually, sunshine can be accumulated in the small size, and floor area and optically focused are more adjustable than flexibly, are the important directions of current development; Current dish formula concentrating generating system need be installed in stirling generator on the focus of dish formula mirror, and stirling generator is very heavy, and the system energy consumption when this has just increased solar tracking has greatly obviously reduced simultaneously system balancing and wind resistance.
From present technical indicator, the peak efficiencies of concentrating photovoltaic power generation and dish formula photo-thermal power generation all can reach about 30%.If can adopt the optically focused dividing method, concentrating photovoltaic power generation (utilizing high-frequency short waves) and dish formula photo-thermal power generation (utilizing the low frequency long wave) are combined, not only can realize uninterruptable power generation round the clock, and the peak efficiencies of totally generating electricity can reach about 45%; If can then can effectively reduce system energy consumption with the focal spot of optically focused from transferring to system below or ground in the air, improve the balance and the wind resistance of system.
Though at present slot type, tower and dish formula condenser system all propose the method for optically focused frequency division separately, but their common shortcomings are: only simply utilize the frequency division film that high-frequency short waves and low frequency long wave are separated, two-beam behind the frequency division lays respectively at spectroscopical both sides, can't simultaneously two focal spots be transferred to system below or ground, and the optically focused of two focal spots ratio can not independent regulation, has reduced the feasibility and the dirigibility of condensation photovoltaic and photo-thermal cogeneration.
Summary of the invention
The utility model purpose is to overcome the deficiency of existing optically focused frequency division system, a kind of sun power secondary condensation frequency divider based on dish formula optically focused is provided, provide a kind of and two focal spots behind the frequency division all can be transferred to the system below, but and the dish formula optically focused frequency divider of the optically focused of two focal spots ratio independent regulation.
Have light hole in the middle of the dish formula catoptron based on the paraboloid of revolution in the sun power secondary condensation frequency divider of dish formula optically focused, the below of light hole is furnished with the inlet of condensation photovoltaic cell panel and heat collector respectively along the both sides of the dish formula catoptron axis of the paraboloid of revolution; The light hole top, arrange a step lens at 200～4000mm place, summit from paraboloid of revolution dish formula catoptron, step lens has two different curves, wherein, on near step lens one curved surface of paraboloid of revolution dish formula catoptron, post the frequency division film, step lens another curved surface far away from paraboloid of revolution dish formula catoptron is the silver mirror reflecting surface, be provided with support bar between paraboloid of revolution dish formula catoptron and the step lens, the back bracket of paraboloid of revolution dish formula catoptron is connected by the double-axis tracking system with column one end, the controller of double-axis tracking system places on the ground, and the column other end links to each other with swivel base.
Described step lens arrangement is: step lens is arranged between paraboloid of revolution dish formula catoptron and its optically focused focus, or step lens is arranged in the focus outside of paraboloid of revolution dish formula catoptron, or two different curves of step lens lay respectively at the inside and outside both sides of focus of paraboloid of revolution dish formula catoptron.When described step lens was arranged between paraboloid of revolution dish formula catoptron and its optically focused focus, two different curves of step lens all were convex surface, and the perifocus of two convex surfaces lays respectively at the both sides of paraboloid of revolution dish formula catoptron axis; The surface equation of described convex surface is the composite surface that a rotation Hyperbolic Equation or a plurality of rotation Hyperbolic Equation are formed.When described step lens is arranged in the focus outside of paraboloid of revolution dish formula catoptron, two different curves of step lens all are concave surface, the perifocus of two concave surfaces lays respectively at the both sides of paraboloid of revolution dish formula catoptron axis, and the surface equation of described concave surface is the composite surface that an ellipse of revolution equation or a plurality of ellipse of revolution equation are formed.When two different curves of described step lens lay respectively at the inside and outside both sides of the focus of paraboloid of revolution dish formula catoptron, two different curves of step lens are respectively convex surface and concave surface, wherein convex surface is between paraboloid of revolution dish formula catoptron and its focus, concave surface is in the paraboloid of revolution dish formula reflector focal point outside, and the perifocus of convex surface and concave surface lays respectively at the homonymy of paraboloid of revolution dish formula catoptron axis; The surface equation of described convex surface is the composite surface that a rotation Hyperbolic Equation or a plurality of rotation Hyperbolic Equation are formed; The surface equation of described concave surface is the composite surface that an ellipse of revolution equation or a plurality of ellipse of revolution equation are formed.
Compared with prior art, the utlity model has following advantage:
1, method of the present utility model can realize the optically focused and the frequency division of sun power simultaneously, and two optically focused focal spots are all transferred to the system below, the energy consumption in the time of can effectively reducing system's solar tracking, the balance and the wind resistance of raising system.
2, the equation of two different curves that method of the present utility model can be by adjusting step lens is regulated the optically focused ratio of two-beam respectively, satisfies the requirement of the required separately best optically focused intensity of condensation photovoltaic cell panel and heat collector (or Stirling-electric hybrid hot junction).
Description of drawings
Fig. 1 is based on the sun power secondary condensation frequency divider synoptic diagram of dish formula optically focused;
Fig. 2 is the step lens synoptic diagram with two different curves that is arranged between dish formula catoptron and the focus thereof of the present utility model;
Fig. 3 is the step lens synoptic diagram with two different curves that is arranged in the dish formula reflector focal point outside of the present utility model;
Fig. 4 is the step lens synoptic diagram that two different curves of the present utility model lay respectively at the inside and outside both sides of dish formula reflector focal point;
Among the figure: controller 1, paraboloid of revolution dish formula catoptron 2, light hole 3, support bar 4, silver mirror reflecting surface 5, step lens 6, frequency division film 7, heat collector inlet 8, condensation photovoltaic cell panel 9, back bracket 10, double-axis tracking system 11, column 12, swivel base 13.
Embodiment
Sun power secondary condensation dividing method based on dish formula optically focused is: adopt the paraboloid of revolution dish formula catoptron 2 of light hole 3 in the middle of having that sunshine is gathered together, arrange a step lens 6 at vertex distance 200～4000mm place from paraboloid of revolution dish formula catoptron 2, step lens 6 has two different curves, wherein, on near step lens 6 one curved surfaces of paraboloid of revolution dish formula catoptron 2, post frequency division film 7, sunshine in the condensation photovoltaic cell panel 9 response wave band scopes is reflected, shine on the condensation photovoltaic cell panel 9 after passing light hole 3, from paraboloid of revolution dish formula catoptron 2 step lens 6 another curved surfaces far away is silver mirror reflecting surface 5, silver mirror reflecting surface 5 reflects light that all see through frequency division film 7, enters heat collector inlet 8 after passing light hole 3.
Described step lens 6 arrangements are: step lens 6 is arranged between paraboloid of revolution dish formula catoptron 2 and its optically focused focus, or step lens 6 is arranged in the focus outside of paraboloid of revolution dish formula catoptron 2, or two different curves of step lens 6 lay respectively at the inside and outside both sides of focus of paraboloid of revolution dish formula catoptron 2.When described step lens 6 was arranged between paraboloid of revolution dish formula catoptron 2 and its optically focused focus, 6 two different curves of step lens all were convex surface, and the perifocus of two convex surfaces lays respectively at the both sides of paraboloid of revolution dish formula catoptron 2 axis; The surface equation of described convex surface is the composite surface that a rotation Hyperbolic Equation or a plurality of rotation Hyperbolic Equation are formed.When described step lens 6 is arranged in the focus outside of paraboloid of revolution dish formula catoptron 2,6 two different curves of step lens all are concave surface, the perifocus of two concave surfaces lays respectively at the both sides of paraboloid of revolution dish formula catoptron 2 axis, and the surface equation of described concave surface is the composite surface that an ellipse of revolution equation or a plurality of ellipse of revolution equation are formed.Inside and outside two different curves of described step lens 6 lay respectively at the focus of paraboloid of revolution dish formula catoptron 2 during both sides, 6 two different curves of step lens are respectively convex surface and concave surface, wherein convex surface is between paraboloid of revolution dish formula catoptron 2 and its focus, concave surface is in the paraboloid of revolution dish formula catoptron 2 focuses outside, and the perifocus of convex surface and concave surface lays respectively at the homonymy of paraboloid of revolution dish formula catoptron 2 axis; The surface equation of described convex surface is the composite surface that a rotation Hyperbolic Equation or a plurality of rotation Hyperbolic Equation are formed; The surface equation of described concave surface is the composite surface that an ellipse of revolution equation or a plurality of ellipse of revolution equation are formed.
As shown in Figure 1, form by controller 1, paraboloid of revolution dish formula catoptron 2, light hole 3, support bar 4, silver mirror reflecting surface 5, step lens 6, frequency division film 7, heat collector inlet 8, condensation photovoltaic cell panel 9, back bracket 10, double-axis tracking system 11, column 12, swivel base 13 based on the sun power secondary condensation frequency divider of dish formula optically focused.Have light hole 3 in the middle of the dish formula catoptron 2 based on the paraboloid of revolution in the sun power secondary condensation frequency divider of dish formula optically focused, the below of light hole 3 is furnished with the inlet 8 of condensation photovoltaic cell panel 9 and heat collector respectively along the both sides of paraboloid of revolution dish formula catoptron 2 axis; The top of light hole 3, arrange a step lens 6 at vertex distance 200～4000mm place from paraboloid of revolution dish formula catoptron 2, step lens 6 has two different curves, wherein, on near step lens 6 one curved surfaces of paraboloid of revolution dish formula catoptron 2, post frequency division film 7, from paraboloid of revolution dish formula catoptron 2 step lens 6 another curved surfaces far away is silver mirror reflecting surface 5, be provided with support bar 4 between paraboloid of revolution dish formula catoptron 2 and the step lens 6, the back bracket 10 of paraboloid of revolution dish formula catoptron 2 is connected by double-axis tracking system 11 with column 12 1 ends, the controller 1 of double-axis tracking system 11 places on the ground, and column 12 other ends link to each other with swivel base 13.
Described step lens 6 arrangements are: step lens 6 is arranged between paraboloid of revolution dish formula catoptron 2 and its optically focused focus, or step lens 6 is arranged in the focus outside of paraboloid of revolution dish formula catoptron 2, or two different curves of step lens 6 lay respectively at the inside and outside both sides of focus of paraboloid of revolution dish formula catoptron 2.
As shown in Figure 2, when described step lens 6 is arranged between paraboloid of revolution dish formula catoptron 2 and its optically focused focus, 6 two different curves of step lens all are convex surface, and the perifocus of two convex surfaces lays respectively at the both sides of paraboloid of revolution dish formula catoptron 2 axis; The surface equation of described convex surface is the composite surface that a rotation Hyperbolic Equation or a plurality of rotation Hyperbolic Equation are formed; Scribbling frequency division film 7 on the near convex surface of paraboloid of revolution dish formula catoptron 2, is silver mirror reflecting surface 5 from paraboloid of revolution dish formula catoptron 2 another convex surfaces far away.
As shown in Figure 3, when described step lens 6 is arranged in the focus outside of paraboloid of revolution dish formula catoptron 2,6 two different curves of step lens all are concave surface, the perifocus of two concave surfaces lays respectively at the both sides of paraboloid of revolution dish formula catoptron 2 axis, and the surface equation of described concave surface is the composite surface that an ellipse of revolution equation or a plurality of ellipse of revolution equation are formed; Scribbling frequency division film 7 on the near convex surface of paraboloid of revolution dish formula catoptron 2, is silver mirror reflecting surface 5 from paraboloid of revolution dish formula catoptron 2 another convex surfaces far away.
As shown in Figure 4, inside and outside two different curves of described step lens 6 lay respectively at the focus of paraboloid of revolution dish formula catoptron 2 during both sides, 6 two different curves of step lens are respectively convex surface and concave surface, wherein convex surface is between paraboloid of revolution dish formula catoptron 2 and its focus, concave surface is in the paraboloid of revolution dish formula catoptron 2 focuses outside, and the perifocus of convex surface and concave surface lays respectively at the homonymy of paraboloid of revolution dish formula catoptron 2 axis; The surface equation of described convex surface is the composite surface that a rotation Hyperbolic Equation or a plurality of rotation Hyperbolic Equation are formed; The surface equation of described concave surface is the composite surface that an ellipse of revolution equation or a plurality of ellipse of revolution equation are formed; Scribbling frequency division film 7 on the near convex surface of paraboloid of revolution dish formula catoptron 2, is silver mirror reflecting surface 5 from paraboloid of revolution dish formula catoptron 2 another convex surfaces far away.
Embodiment:
Paraboloid of revolution dish formula catoptron diameter of section is 3500mm, light hole opening diameter 600mm, and the minute surface equation of paraboloid of revolution dish formula catoptron is X
2+ Y
2=6062Z; The step lens diameter of section is 600mm, place 1265mm place, paraboloid of revolution dish formula catoptron central axis top, the curved surface that posts the frequency division film will make that its surface equation can be written as after central axis and the paraboloid of revolution dish formula catoptron central axes around 4.6 ° of coordinate system rotation
The curved surface of silver mirror catoptron along 4.6 ° of phase reverse direction rotations, makes that its surface equation can be written as after central axis and the paraboloid of revolution dish formula catoptron central axes with coordinate system
Condensation photovoltaic cell panel and heat collector inlet are separately positioned on paraboloid of revolution dish formula catoptron below 700mm and 350mm place.
In the fine morning in East China spring, the spot diameter on the condensation photovoltaic cell panel is about 200 mm, and the average energy current density is 70-80 kW/m
2The spot diameter of heat collector porch is about 100 mm, and the average energy current density is 300-400 kW/m
2
At fine high noon in East China summer, the spot diameter on the condensation photovoltaic cell panel is about 200 mm, and the average energy current density is 90-100 kW/m
2The spot diameter of heat collector porch is about 100 mm, and the average energy current density is 500-600 kW/m
2
At fine high noon in East China autumn, the spot diameter on the condensation photovoltaic cell panel is about 200 mm, and the average energy current density is 70-80 kW/m
2The spot diameter of heat collector porch is about 100 mm, and the average energy current density is 300-400 kW/m
2
In fine afternoon in East China winter, the spot diameter on the condensation photovoltaic cell panel is about 200 mm, and the average energy current density is 50-60 kW/m
2The spot diameter of heat collector porch is about 100 mm, and the average energy current density is 200-250 kW/m
2
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200473187U CN202083827U (en) | 2011-02-25 | 2011-02-25 | Solar secondary concentrating frequency division device based on dish concentrating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200473187U CN202083827U (en) | 2011-02-25 | 2011-02-25 | Solar secondary concentrating frequency division device based on dish concentrating |
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| CN202083827U true CN202083827U (en) | 2011-12-21 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103258A (en) * | 2011-02-25 | 2011-06-22 | 浙江大学 | Dish condensation-based solar energy secondary condensation frequency division method and device |
| CN102967918A (en) * | 2012-12-05 | 2013-03-13 | 河海大学常州校区 | Novel solar light-condensation disc |
| CN105042887A (en) * | 2015-07-16 | 2015-11-11 | 哈尔滨工业大学 | Device for increasing thermal utilization rate of disc type solar thermal collector |
| CN106989525A (en) * | 2017-04-10 | 2017-07-28 | 天津清芸主力能源科技有限公司 | A kind of disc type solar energy photo-thermal power generation amplitude transformer device |
| CN114123963A (en) * | 2021-11-25 | 2022-03-01 | 中国石油大学(华东) | Solar disc type light-gathering frequency-division utilization system |
-
2011
- 2011-02-25 CN CN2011200473187U patent/CN202083827U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103258A (en) * | 2011-02-25 | 2011-06-22 | 浙江大学 | Dish condensation-based solar energy secondary condensation frequency division method and device |
| CN102967918A (en) * | 2012-12-05 | 2013-03-13 | 河海大学常州校区 | Novel solar light-condensation disc |
| CN102967918B (en) * | 2012-12-05 | 2014-12-31 | 河海大学常州校区 | Novel solar light-condensation disc |
| CN105042887A (en) * | 2015-07-16 | 2015-11-11 | 哈尔滨工业大学 | Device for increasing thermal utilization rate of disc type solar thermal collector |
| CN105042887B (en) * | 2015-07-16 | 2017-04-12 | 哈尔滨工业大学 | Device for increasing thermal utilization rate of disc type solar thermal collector |
| CN106989525A (en) * | 2017-04-10 | 2017-07-28 | 天津清芸主力能源科技有限公司 | A kind of disc type solar energy photo-thermal power generation amplitude transformer device |
| CN114123963A (en) * | 2021-11-25 | 2022-03-01 | 中国石油大学(华东) | Solar disc type light-gathering frequency-division utilization system |
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