CN102055375A - High-efficiency low-cost solar power supply - Google Patents
High-efficiency low-cost solar power supply Download PDFInfo
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- CN102055375A CN102055375A CN2009101532762A CN200910153276A CN102055375A CN 102055375 A CN102055375 A CN 102055375A CN 2009101532762 A CN2009101532762 A CN 2009101532762A CN 200910153276 A CN200910153276 A CN 200910153276A CN 102055375 A CN102055375 A CN 102055375A
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- 238000000034 method Methods 0.000 claims abstract 2
- 239000004020 conductor Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 230000002463 transducing effect Effects 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 230000005291 magnetic effect Effects 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims 1
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- 238000010248 power generation Methods 0.000 abstract description 8
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- 238000010586 diagram Methods 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
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- 230000005622 photoelectricity Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000013083 solar photovoltaic technology Methods 0.000 description 1
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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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
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Abstract
The invention relates to the technical field of new energy sources with the most development prospect in the world at present, in particular to a solar power supply with high efficiency and low cost, which is one of important methods for utilizing and popularizing renewable energy sources. The invention designs a solar power generation device for generating power by combining condensation and heat energy, which fully utilizes the light and heat of solar energy to generate power. The automatic tracking type light-gathering reflector is adopted, the conversion efficiency of the solar cell is efficiently improved, and the photocell is connected with the heat exchanger in a heat conduction mode. And regulating and reducing the working temperature of the solar cell according to the design requirement. The heat energy of the invention is directly converted into electric energy by adopting the thermoelectric cell power generation principle of electromagnetism, the power generation efficiency is improved, the cost is reduced, the material cost is low, the manufacture and the maintenance are simple and convenient, the power order can be used as a daily power supply for household, commercial and enterprise, and the power generation cost can compete with the commercial power to enter a public power grid due to the reduction of the power generation cost.
Description
Technical field:
The present invention relates to new energy technology the most promising on the our times, particularly a kind of sun-generated electric power of high efficiency, low cost is the important component part of regenerative resource.
Technical background:
By solar cell the electricity generation system that solar radiant energy is converted to electric energy is called solar photovoltaic generation system, it is converted into electric energy with the luminous energy of the sun, the power supply that produces is a direct current, can directly use with galvanic form, also can convert thereof into and be alternating current, use with inverter.Also can electric energy be deposited, discharge at any time as required and use with accumulators such as storage batterys.Estimate that solar energy power generating will develop into important supply power mode, in world's sustainable energy structure, occupy important ratio, be widely used in the every field of industry, agricultural, science and technology, culture and education, national defence and people's lives.
The solar photovoltaic generation system that is connected with public electric wire net is that solar energy power generating enters the large-scale commercial applications elelctrochemical power generation stage, become the important directions of power industry part, be the main flow trend of world today's solar photovoltaic technology development, particularly photovoltaic cell wherein and the networking roof solar photovoltaic generating system that combines of building, be the focus that numerous countries such as U.S., Europe, day competitively develop, extensive market, prospect are tempting.
At present, the light conversion efficiency of commodity photovoltaic cell only 10～14%, the cost of external application photovoltaic cell capable of generating power remains several times of other conventional power generation usage modes, the cost height is the greatest factor of its extensive use of restriction, and structure is very complicated usually, only uses its electric energy, a large amount of heat energy not to make full use of the function of its generating.
The objective of the invention is to design a kind of optically focused and the compound Blast Furnace Top Gas Recovery Turbine Unit (TRT) of heat energy, make full use of the light and heat cogeneration of solar energy, improved generating efficiency, reduced cost, the cost of material is low for it, manufacturing process is simple, and the power number magnitude can be used as daily power supply, source power supply and business electrical source and uses, and cost of electricity-generating of the present invention can be reduced to 6 cents/kw.h, can compete with civil power, enter public electric wire net.
The present invention is achieved by the following technical solutions:
Can design according to characteristics and to be divided into: 1. direct current system with electric loading, 2. AC system, 3. alternating current-direct current hybrid system, its main distinction is whether inverter is arranged in the system, the present invention mainly by: solar cell array, controller, batteries, inverter etc. are partly formed solar photovoltaic generation system.For the utilization ratio that improves solar energy adopts solar energy automatic tracking formula concentrating to generate power reflector, efficiently collect sunlight and other light and make it to shine on the solar cell surface, improve photronic conversion efficiency greatly.Solar cell has absorbed and has had high-octane photon excitation and go out photo-generated carrier-electron-hole pair, thereby the accumulation that produces the charges of different polarity on P-N knot both sides produces the photoproduction electromotive force, obtains power output solar energy or other luminous energy have been directly changed into electric energy.Also can between the contact of the back side of solar cell, deposit the metal surface (can be absorbed and convert to the electric energy light wavelength by photocell) of one deck high reflectance with vacuum vapour deposition, make any radiated wave all see through semi-conducting material easily and enter back of the body surface reflection face, thereby it can arrive the utilance that the surperficial light of the back of the body has increased light by the reflecting ﹠ transmitting battery substantially.
Studies show that: the Carnot's cycle efficiency that solar radiant energy converts electric energy to can reach 95%, and the upper limit of solar cell theoretical efficiency only is 33% at present, the photoelectric conversion efficiency of this explanation solar cell also has very big potentiality, and the principal element that causes the solar cell energy loss is exactly a thermal loss, temperature is very large to the electric output performance influence of solar cell, rising along with temperature, the photocell short circuit current increases little, and the open circuit voltage reduction is very fast, almost be linear, thereby make the conversion efficiency of solar cell reduce, power output descends.
Solar cell must tan by the sun under the sun in work, solar cell itself is also constantly producing heat during generating, the actual work temperature that causes solar cell is not 25 ℃ under the reference condition, often than higher, the present invention is installed near the optically focused reflector focus point heat exchanger and produces hot water (or for heat carrier produce hot-air with the air) with water for the heat carrier utilizes solar energy, heat exchanger is equipped with solar cell on the surface of optically focused reflector, there is heat conduction to be connected between photocell and the heat exchanger, heat exchanger is equipped with water inlet, delivery port and temperature control equipment top connect heat exchanger, heat exchanger inwardly injects cold water and outwards discharges hot water, by the working temperature of the tuning solar cell of designing requirement, improve the electric delivery efficiency of solar cell.
The present invention forms the heat energy power-generating device by heat conductor, transducing conductor, heat dissipation conductor, steady magnetic field, two aspects of transducing conductor connect respectively heat conductor and heat dissipation conductor, heat energy through heat conductor pass to the transducing conductor through heat dissipation conductor outwards dispel the heat, the direction of steady magnetic field is parallel to joint face between conductor, perpendicular to the temperature gradient direction in the transducing conductor, just produce electromotive force on the transducing conductor like this heat energy be converted into outwards output or store of electric energy.
A kind of high-efficiency low-cost solar power supply of the present invention has following advantage:
1. the output energy is big: electricity generation system is compared with flat photocell, and power output increases more than 60%.
2. reduction cost of electricity-generating: because optically focused emission effect can increase substantially energy density, the solar cell of unit are can send bigger electric energy, and therefore the cost of every watt of electricity also obviously descends.
3. optimize the working temperature of solar cell, improve photoelectric conversion efficiency and electric delivery efficiency.
4. constitute a photo-thermal, photoelectricity compound electricity generation system, technology maturity height, good product quality, performance brilliance, can realize high-power, the cost of material is low, totally is in advanced level, a plurality of indexs are leading.
5. solar power generation utilance height: not only having utilized the light of solar energy to change electric energy but also make full use of its heat energy changes electricity, be Blast Furnace Top Gas Recovery Turbine Unit (TRT) be again the automatic boiler of supply heat and boiling water.
6. apparatus structure is simple, is widely used, heat energy power-generating is because the required temperature difference is little, can do energy generating with one glass of hot water, makes the hot water charge power supply, solar energy UTILIZATION OF VESIDUAL HEAT IN, geothermal utilization and make relevant generating using electricity system.
7. be applicable to all kinds of high-low storey buildings of different class standards such as villa, grange, management and maintenance level that the disposable life-span of coming into operation is long, each class property was paid wages, was fit to the saving energy.
8. can the technology kind be carried out menu mode select according to the demand of user and building.
Fig. 1 is the sun-generated electric power electricity generation system basic block diagram of high efficiency, low cost of the present invention.
Fig. 2 is the solar cell I-V characteristic curve under the different irradiation intensities.
Fig. 3 is the I-V characteristic curve of solar cell under the different temperatures.
Concrete enforcement:
High-efficiency low-cost solar power supply as shown in Figure 1, it is the compound device of solar generating of a kind of concentrating to generate power and heat energy power-generating, adopt solar energy automatic tracking formula optically focused reflector, the efficient sunlight of collecting makes it to shine on the solar cell surface with other light, increased irradiation intensity, improved photronic conversion efficiency greatly, utilize heat exchanger simultaneously, heat exchanger, automatic temperature controller is the heat carrier with water, be adjacent to solar cell and realize that heat conduction connects, make the working temperature of solar cell remain on about 25 ℃ of best working temperatures, heat exchanger is equipped with intake-outlet and automatic temperature controller, the top connects interchanger, heat exchanger inwardly injects cold water and outwards discharges hot water, water in the heat exchanger effectively is the working temperature cooling cooling of solar cell, a large amount of hot water are obtained in heat absorption again, enter in the heat exchanger through temperature difference circulation, cold water in the heat exchanger is again in the inflow heat exchanger, and constantly circulation is raised to water temperature and discharges after the design temperature and carries out heat energy power-generating.
The transducing conductor that heat energy power-generating is made by the ferromagnetic metal alloy, the heat conductor that common material is made are formed with heat dissipation conductor, steady magnetic field, two faces of heat exchange conductor are connected heat conductor respectively and heat dissipation conductor, hot water through heat conductor pass to the transducing conductor through heat dissipation conductor outwards dispel the heat, the direction of steady magnetic field is parallel to the joint face between conductor, perpendicular to the temperature gradient direction of transducing conductor.The transducing conductor produces electromotive force heat energy is directly changed into electric energy output like this, and the transducing conductor can produce high potential by vertical many group series connection, the parallel connection of a plurality of equipotential device can realized high-power generating and the cost of material is low.
Irradiation intensity shown in Fig. 2, Fig. 3 must be paid attention to, be can not ignore in design and practical application the electric output performance influence of solar cell.
Claims (3)
1. the sun-generated electric power of the high efficiency, low cost of a light and heat cogeneration that makes full use of solar energy is characterized in that: by solar module, tracing collection reflector, heat exchanger, heat exchanger, heat energy power-generating, controller, batteries, inverter (standby inverter), AC power distribution cabinet/AC distribution panel, ammeter etc. are formed automatically.
2. the sun-generated electric power of high efficiency, low cost according to claim 1 is characterized in that a plurality of combination exchangers in the concentrating to generate power are the heat carrier with the water or the aqueous solution.Heat exchanger is connected and can fixes with methods such as soldering, heat-conducting glues with the heat conduction of solar cell, further reduces the solar cell floor space.
3. the sun-generated electric power according to the described high efficiency, low cost of claim 1.2 is characterized in that it is that electric excellence conductor, heat conductor and heat dissipation conductor is the excellence conductor of the strong heat energy of diamagnetism that the transducing conductor of heat energy power-generating has high magnetic conductivity.With a plurality of iso-electric thermoelectric cell combinations, realize high-power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101532762A CN102055375A (en) | 2009-10-30 | 2009-10-30 | High-efficiency low-cost solar power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101532762A CN102055375A (en) | 2009-10-30 | 2009-10-30 | High-efficiency low-cost solar power supply |
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| Publication Number | Publication Date |
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| CN102055375A true CN102055375A (en) | 2011-05-11 |
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| CN2009101532762A Pending CN102055375A (en) | 2009-10-30 | 2009-10-30 | High-efficiency low-cost solar power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185528A (en) * | 2011-05-10 | 2011-09-14 | 北京航空航天大学 | Heat control system and method with complementary solar energy and temperature difference energy applicable to long-endurance aircraft |
| WO2013183066A2 (en) * | 2012-06-04 | 2013-12-12 | Insolare Energy Pvt Ltd | Solar energy distribution network |
-
2009
- 2009-10-30 CN CN2009101532762A patent/CN102055375A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185528A (en) * | 2011-05-10 | 2011-09-14 | 北京航空航天大学 | Heat control system and method with complementary solar energy and temperature difference energy applicable to long-endurance aircraft |
| WO2013183066A2 (en) * | 2012-06-04 | 2013-12-12 | Insolare Energy Pvt Ltd | Solar energy distribution network |
| WO2013183066A3 (en) * | 2012-06-04 | 2014-01-30 | Insolare Energy Pvt Ltd | Solar energy distribution network |
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Application publication date: 20110511 |