CN102322410B - Method of forming hot air by using solar energy to generate power - Google Patents
Method of forming hot air by using solar energy to generate power Download PDFInfo
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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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
A method of forming hot air by using solar energy to generate power relates to a solar heat collector (6), a hot wind tower (1) and generating sets (4). The method is characterized in that a wind drum is vertically and upwards built at the highest part of a ridge (5); a vertical shaft is vertically and downwards built along the wind drum; the wind drum and the vertical shaft form the hot wind tower (1); a plurality of drifts which form wind inlet passageways (3) are built at the periphery of the vertical shaft and are tangentially communicated with the periphery of the vertical shaft; the solar heat collector (6) is built along the slope of the ridge; a certain gap exists between the solar heat collector (6) and the ground; the highest part and the side of the solar heat collector (6) are separated from atmosphere; the lowest part of the solar heat collector is communicated with atmosphere; the space formed by the solar heat collector (6) and the ground in the surrounding manner forms a greenhouse; a wind inlet of each wind inlet passageway (3) is arranged in the greenhouse; and the generating set (4) is arranged in each wind inlet passageway (3). The method can be used for realizing the power generation of solar energy and auxiliary energy parallel machine by using the ridge and wastelands.
Description
One, technical field
The present invention relates to the solar power station technology, be specially the method for utilizing solar energy to form hot airflow power generation.
Two, background technique
The solar electrical energy generation tower technology comes from the Schlaich of Stuttgart, Germany university and teaches the bold conception that proposed in 1978.This power generation system mainly partly is made of solar energy heating canopy, hot blast tower and turbine generation unit three basic.The solar energy heating canopy build that solar irradiance is strong in, on the reasonable ground of heat-insulating property, between thermal-arrest canopy and the ground certain interval is arranged, and can allow surrounding atmosphere enter system; The middle overhead a distance of thermal-arrest canopy is filling chimney (hot blast tower), in chimney bottom a turbo machine is housed.The thermal-arrest canopy is to adopt the material of printing opacity to make, and after solar radiation saw through thermal-arrest: most of solar energy formed " greenhouse effect " in the thermal-arrest canopy, and the air temperature in the thermal-arrest canopy is raise, and density reduces; Be positioned at the chimney of thermal-arrest canopy central authorities, towering hundreds of rice and even the upper km of reaching, the hot air flow in the thermal-arrest canopy constantly compiles to thermal-arrest canopy center under the suction of chimney, and intake duct produces powerful hot air flow and rises along chimney, thereby promote the rotation of turbine wind mill group, drive the generator set generating; Cool air around the thermal-arrest canopy constantly sucks the thermal-arrest canopy simultaneously, forms thermodynamic cycle.In air flow process, be accompanied by the process of three transformation of energy, at first air is heated, and solar energy is converted into air internal energy; Because the rising of air in chimney flowed, interiorly can change kinetic energy into; When air flow to turbo machine, air-flow promoted turbine rotor and rotates, and kinetic energy changes into again our required electric energy.Therefore the thermodynamic cycle process of solar heat air-flow generating is a power cycle process in essence.Remaining part solar energy is absorbed by the ground below the thermal-arrest canopy.
Chinese patent application 201010296818 discloses a kind of heat energy wind driven generator, comprise heat energy, the wind chimney, turbine, four parts of motor, it is characterized in that: on comprehensive at present known various wind-driven generator advantages basis, overcome the existing calm inoperative defective of wind-driven generator, use the sunlight heat radiation, the principles such as air thermal expansion, design a kind of solar heat energy that utilizes and excite Air Flow, utilize high altitude stream to strengthen the device of flowed energy, even make device in the null situation of natural wind speed, also can rely on merely solar heat energy and the high low air flow temperature difference to run well and generate electricity.
Chinese patent application 200810062186 discloses a kind of solar energy thermal current wind power generation method.Its technological scheme is: wind-driven generator is at the wind energy power of the basis of natural wind energy generating stack hot air flow, this hot air flow is to utilize the heat of solar energy generation to the air heating of wind-power generating system pylon air conducting tube bottom, the wind effect of pulling out owing to tubular pylon air conducting tube, the hot air of pylon air conducting tube bottom will rise at a high speed along the pylon inner chamber with the form of hot air flow, the wind-force of this thermal current generating goes to drive the turbine rotation that is positioned at pylon inside, this turbine is connected by the gear of transmission shaft with the gear-box inside of engine rooms of wind power generators, drives wind-driven generator.Hot air flow is collected solar energy by heat-collecting devcie, and this heat-collecting devcie is that a upper and lower opening is conical surface pyramidal structure; Its open top links to each other with the air conducting tube part lower ending opening coupling of pylon, and base or support are fixed in the bottom.Heat-collecting devcie converts solar energy into heat energy, the air of heating pylon air conducting tube bottom taper tower inside, and inner air is warmmer, and the hot air flow wind speed of pylon air conducting tube inside is larger, and the secondary speed of pylon inside is also just larger.The turbine of rotation drives wind turbine power generation by the gear-box of transmission shaft and wind-driven generator inside.
But above-mentioned technology exists a lot significantly not enough, as: 1, solar electrical energy generation need to absorb a large amount of heat, and gathering-device will be very large so, causes that floor space is very large; 2, owing to not having solar energy evening, the electric energy that sends night is very little, even may not generate electricity; 3, the heat energy wind driven generator of having announced at present can't resolve the calm problem that does not start, and does not also have to solve the technical bottleneck of extensive generating; 4, the efficient of solar energy generation electric energy is too low in the existing solar energy thermal current wind power generation method, is difficult to extensive generating.
Three, summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, design and a kind ofly can utilize the ridge wasteland as far as possible, by appropriate design, can realize that the solar energy that utilizes of extensive generating forms the method for hot airflow power generation; Simultaneously, when illumination is not enough, also can be by other supplementary energy (as burn away the refuse etc.) to the interior air heating of tower, to guarantee successive generating.Thereby can utilize the ridge wasteland, realize solar energy and supplementary energy parallel operation generating.
Concrete technological scheme of the present invention is:
A kind of method of utilizing solar energy to form hot airflow power generation relates to solar energy heating canopy, hot blast tower and generator set, it is characterized in that:
A, selection ridge highest point are built vertically upward a cross section and are circular air duct, build vertically downward a cross section along the center line of air duct simultaneously and are the vertical shaft of circle, and air duct and vertical shaft seamless link consist of the hot blast tower;
B, build a plurality of circular gallerys along vertical shaft periphery, circular gallery tangentially is communicated with the vertical shaft periphery, circular gallery formation air intake passage;
C, along the slope construction of ridge periphery one or more solar energy heating canopies are arranged, between solar energy heating canopy and the ground certain interval is arranged, the highest point of each solar energy heating canopy and side and large gas barrier, lowest part is communicated with atmosphere, and the space that surrounds between each solar energy heating canopy and the ground consists of a greenhouse;
The intake grill of D, each air intake passage is positioned at corresponding greenhouse;
E, in each air intake passage, generator set is housed.
In the present invention, ridge should be strong waste hillside at sunshine as far as possible; Air duct can be cylindrical shape or taper, and vertical shaft also can be cylindrical shape or taper; Each circular gallery can be dug and also can dug on different isohypses on the identical isohypse; Circular gallery generally will have the suitable gradient, is beneficial to circular gallery internal water accumulation and can naturally flows out etc.; Certain intervals (clearance space can be used as access path, builds corresponding supporting facility etc.) can be arranged between each solar energy heating canopy; The intake grill of air intake passage should be positioned at the higher position in greenhouse; Generator set can be the wind turbine generator group.
Further scheme is, the thermal-arrest coil pipe is equipped with on ground in each greenhouse, at the hot blast tower bottom heat-radiation heat-dissipating coil pipe is housed, and heat-radiation heat-dissipating coil pipe two ends are communicated with the formation circulation loop by pipeline with the thermal-arrest coil pipe, heat transfer medium is housed in the pipeline, pump also is housed on the pipeline.Heat transfer medium is generally water or air, thereby can further utilize solar energy.
Further scheme is to be covered with thermal-protective coating between thermal-arrest coil pipe and ground.In order to improve the thermal efficiency of solar energy.
Further scheme is that heat-radiation heat-dissipating coil pipe two ends also are equipped with (being parallel with) assisted heating device.So that when illumination is not enough, also can to the air heating in the tower, guarantee successively to generate electricity by other supplementary energy (as burn away the refuse etc.).Assisted heating device can be built the more smooth place of ridge in.
When specific design, also should take into full account: along with the diameter increase of tower height and tower, the buoyancy that hot blast Ta Tanei produces is just larger; The tower height of the wind speed of air intake passage and hot blast tower and diameter, air intake passage length, diameter, the factors such as mode of heating are relevant.
Air intake passage tangentially is connected with the hot blast tower, can improve the suction effect in the hot blast tower, increases the air velocity of air intake passage, makes generator set produce larger output power.
Generator set of the present invention is mounted in the air intake passage, rather than is installed in hot blast tower bottom central authorities as other solar chimney power station.This mode has avoided the interior Air Flow of hot blast tower on the impact of wind turbine generator, thereby has improved the working efficiency of wind-powered electricity generation unit.
External heat source of the present invention is diversification, and can utilize solar energy daytime; In the situation that night or sunshine are not strong, can utilize the unnecessary solar energy of storage on daytime, perhaps utilize the available renewable sources of energy such as local rubbish, thereby make the power station can continue generating.
Described hot blast tower bottom can be up-small and down-big taper, in order at the hot blast tower bottom power station supplementary equipment is installed, hot blast tower major part preferably is positioned at the inside of massif.
The heat-radiation heat-dissipating coil pipe preferably is installed in the bottom center of hot blast tower, so that the air in the homogeneous heating hot blast tower.
Generator set preferably is installed on air intake passage near an end of hot blast tower.
Wherein:
1, hot blast tower: the base diameter of hot blast tower, the height of tower body diameter and hot blast tower all must design in strict accordance with the calculated results.
2, air intake passage: air intake passage tangentially is connected with the hot blast tower, can improve the suction effect in the hot blast tower, increases the air velocity of air intake passage, makes generator set produce larger output power.Through pre-stage test, the method for this tangential air intake is compared with other air intake mode, can better guide the Air Flow in the hot blast tower.
When 3, generator set adopts up-to-date centreless rare earth permanent-magnetic generator, generating efficiency is greatly improved.
Certainly, also need in practice to consider at least following factors:
1, air velocity is relevant with factors such as the tower height of hot blast tower and diameter, air intake passage length, diameter, mode of heatings in the air intake passage.The hot blast tower is higher, and its construction difficulty is larger, and construction cost is also corresponding higher.So, can not only pursue simply large-sized hot blast tower because pursuing the output power of single hot blast tower, and should consider according to the factor of each side.
2, the power station should be selected in solar energy than more rich place, and the addressing of hot blast tower generally is chosen on the isolated mountain peak as far as possible and builds, and the major part of hot blast tower is built massif inside in, to reduce outside projecting height, to reduce the difficulty of its construction.
The present invention also has the following advantages:
1, the present invention takes full advantage of the pumping action of solar energy heating canopy " greenhouse effect " and hot blast tower.Than traditional solar power station, take effective soil still less.
2, its additional heat energy adopts solar energy and auxiliary heat energy, makes its external heat source supply mode variation, thereby guarantees that its day and night can both stable electric generation.
Four, description of drawings
Fig. 1 is the structure section schematic diagram that adopts a kind of solar power station of the inventive method design.
Fig. 2 is that air intake passage is connected detailed drawing with the hot blast tower.
Fig. 3 is heating system figure.
Fig. 4 is solar energy heating air and water pipe schematic diagram (the A-A generalized section of Fig. 1) on daytime.
Fig. 5 is that water pipe heat radiation at night adds hot air schematic diagram (the A-A generalized section of Fig. 1).
In the accompanying drawing: 1, hot blast tower; 2, heat-radiation heat-dissipating coil pipe; 3, air intake passage; 4, generator set; 5, massif; 6, solar energy heating canopy; 7, thermal-protective coating; 8, thermal-arrest coil pipe; 9, pump; 10, supplementary energy heating equipment; 11, packed layer.
Five, embodiment
The present invention is further described below in conjunction with specific embodiment.Application area of the present invention is not limited to this example.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, a kind of method of utilizing solar energy to form hot airflow power generation relates to solar energy heating canopy 6, hot blast tower 1 and wind turbine generator group 4, it is characterized in that:
A, selection ridge 5 highest points are built vertically upward a cross section and are circular air duct, build vertically downward a cross section along the center line of air duct simultaneously and are the vertical shaft of circle, and air duct and vertical shaft seamless link consist of hot blast tower 1;
B, build a plurality of circular gallerys along silo bottom periphery, circular gallery tangentially is communicated with the silo bottom periphery, circular gallery formation air intake passage 3;
C, along the slope construction of ridge periphery a huge solar energy heating canopy 6 is arranged, between solar energy heating canopy 6 and the ground certain interval is arranged, the highest point of solar energy heating canopy 6 and side and large gas barrier, lowest part is communicated with atmosphere, and the space that surrounds between solar energy heating canopy 6 and the ground consists of the greenhouse;
The intake grill of D, each air intake passage 3 is positioned at the greenhouse;
E, in each air intake passage 3 wind turbine generator group 4 is housed, wherein generator is the centreless rare earth permanent-magnetic generator;
Thermal-arrest coil pipe 8 is equipped with on ground in the greenhouse, in hot blast tower 1 bottom heat-radiation heat-dissipating coil pipe 2 is housed, heat-radiation heat-dissipating coil pipe 2 two ends are communicated with the formation circulation loop by pipeline with thermal-arrest coil pipe 8, heat transfer medium-water is housed in the pipeline, and the water pump 9 that impels the heat transfer medium circulation also is housed on the pipeline.Between thermal-arrest coil pipe 8 and ground, be covered with thermal-protective coating 7.Heat-radiation heat-dissipating coil pipe (2) two ends also are parallel with assisted heating device 10.Be filled with thermal insulation packing layer 11 between thermal-arrest coil pipe 8 and the thermal-protective coating 7.
Can discharge to add hot air to the solar energy of collecting daytime at night, perhaps add hot air with supplementary energy, make the power station night also can be continual and steady generating.
Claims (3)
1. a method of utilizing solar energy to form hot airflow power generation relates to solar energy heating canopy (6), hot blast tower (1) and generator set (4), it is characterized in that:
A, selection ridge (5) highest point are built vertically upward a cross section and are circular air duct, build vertically downward a cross section along the center line of air duct simultaneously and are the vertical shaft of circle, and air duct and vertical shaft seamless link consist of hot blast tower (1);
B, build a plurality of circular gallerys along vertical shaft periphery, circular gallery tangentially is communicated with the vertical shaft periphery, circular gallery formation air intake passage (3);
C, along the slope construction of ridge periphery one or more solar energy heating canopies (6) are arranged, between solar energy heating canopy (6) and the ground certain interval is arranged, the highest point of each solar energy heating canopy (6) and side and large gas barrier, lowest part is communicated with atmosphere, and the space that surrounds between each solar energy heating canopy (6) and the ground consists of a greenhouse;
The intake grill of D, each air intake passage (3) is positioned at corresponding greenhouse;
E, generator set (4) is housed in each air intake passage (3).
Thermal-arrest coil pipe (8) is equipped with on ground in each greenhouse, in hot blast tower (1) bottom heat-radiation heat-dissipating coil pipe (2) is housed, heat-radiation heat-dissipating coil pipe (2) two ends are communicated with the formation circulation loop by pipeline with thermal-arrest coil pipe (8), heat transfer medium is housed in the pipeline, pump (9) also is housed on the pipeline.
2. the method for utilizing solar energy to form hot airflow power generation according to claim 1 is characterized in that: be covered with thermal-protective coating (7) between thermal-arrest coil pipe (8) and ground.
3. the method for utilizing solar energy to form hot airflow power generation according to claim 1, it is characterized in that: heat-radiation heat-dissipating coil pipe (2) two ends also are equipped with supplementary energy heating equipment (10).
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| CN2011101377656A CN102322410B (en) | 2011-05-21 | 2011-05-21 | Method of forming hot air by using solar energy to generate power |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102606428B (en) * | 2012-03-16 | 2014-01-15 | 梁造钧 | Light-gathering energy-storage type solar thermal power and airflow mixed power generation system |
| CN106286171A (en) * | 2016-09-19 | 2017-01-04 | 青海中水数易信息科技有限责任公司 | Parallel connection type solar thermal current power generation system |
| CN106194613A (en) * | 2016-09-19 | 2016-12-07 | 青海中水数易信息科技有限责任公司 | Light-focusing type solar air-flow generating system |
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| CN101182832A (en) * | 2007-11-20 | 2008-05-21 | 西安交通大学 | Heat energy and solar complementary thermal current power generation system |
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| CN201448963U (en) * | 2009-04-28 | 2010-05-05 | 樊德玺 | Solar underground ventilation device |
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2011
- 2011-05-21 CN CN2011101377656A patent/CN102322410B/en active Active
Patent Citations (8)
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| CN1512061A (en) * | 2002-12-30 | 2004-07-14 | 约瑟普 路易斯 戈麦斯 高马 | Improved wind force recovering device |
| CN1587690A (en) * | 2004-09-02 | 2005-03-02 | 西安交通大学 | Building method for solar energy chimney generator |
| CN2876368Y (en) * | 2005-10-20 | 2007-03-07 | 河北农业大学 | High officiency solar energy power generating device |
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| CN201448963U (en) * | 2009-04-28 | 2010-05-05 | 樊德玺 | Solar underground ventilation device |
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