CN101307749A - Solar energy heat-induced cyclone power generation method and its device - Google Patents
Solar energy heat-induced cyclone power generation method and its device Download PDFInfo
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- CN101307749A CN101307749A CNA2008100181887A CN200810018188A CN101307749A CN 101307749 A CN101307749 A CN 101307749A CN A2008100181887 A CNA2008100181887 A CN A2008100181887A CN 200810018188 A CN200810018188 A CN 200810018188A CN 101307749 A CN101307749 A CN 101307749A
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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
The invention relates to a method and a device for generating power by solar energy thermal whirlwind. The device comprises a wind tower 1; the top end of the wind tower 1 is provided with a diffusion section 2; the outlet center of the diffusion section 2 is provided with an impeller 3 which is connected with a generator 10; the periphery of the lower end of the wind tower 1 is provided with a solar energy heat accumulating shed 7 which is communicated with the wind tower 1 by a rotary air door 8; the periphery of the lower part of the wind tower 1 is also provided with a cooling water jacket 5; the lower part of the wind tower 1 and the rotary air door 8 are provided with a tangential hot wind replenishing spout 6; and the tail end of the rotary air door 8 and the central position of the wind tower 1 are provided with a solar energy heat accumulating plate 9. The method utilizes the wind tower 1, the solar energy heat accumulating shed 7 and the guide air door 8 to generate artificial dust devil or thermal whirlwind, reasonably organizes a flow field inside the tower in order that a thermal whirlwind field is continuous and stable to impel the impeller to rotate and drive the generator 10 to generate power.
Description
Technical field
The present invention relates to the low-temperature solar energy technical field of power generation, particularly a kind of method and implement device thereof that utilizes the controlled thermal induced cyclone power generation of solar energy.
Background technique
Along with population increases and economic development, human increasing to the consumption demand of the energy, coal, oil, rock gas etc. are conventional, not only reserves are limited but also non-renewable for primary energy, and the development and utilization of renewable energy sources becomes more and more important.The renewable and clean energy resource of extensive development comprises solar energy, wind energy, biomass energy etc. at present, and it is very huge to be radiated at tellurian solar energy, is radiated at tellurian solar energy in about 40 minutes, just is enough to the consumption for 1 year energy of global human.We can say that solar energy is really inexhaustible, the nexhaustible energy; And solar electrical energy generation is clean, does not produce public hazards.
Adopt solar electrical energy generation to mainly contain dual mode.First method is a photoelectric conversion: utilize photovoltaic cell capable of generating power, generating efficiency can reach more than the 10-14%, at present the cost costliness of photovoltaic cell capable of generating power under the technical specifications.Second method is the photo-thermal conversion power generation: for example solar light focusing is converted to high temperature heat about 550 ℃, is used for heat hot machine working medium, by hot machine heat energy is converted into mechanical energy again, finish energy converting between mechanical by generator for electricity generation at last.The Stirling circulation is adopted in the circulation of high-temperature solar generating usually, and its device is the external-burning type Stirling engine.Stirling engine has some technical problems to need further to solve at present, and as the cost height of expansion chamber, pressing chamber, heater, cooling chamber, regenerator etc., heat loss is 2-3 a times of explosive motor etc., not can manufacture etc.And for example, utilize solar thermal collector, obtain the middle temperature solar more than 150 ℃, utilize the Rankine cycle generating.
The technology of utilizing wind field geographical and terrian condition formation to carry out wind energy power has obtained development and application, and deficiency is that the diurnal variation and the seasonal variations of wind energy is violent, and the obtaining and store of wind energy influences its large-scale application.Solar energy and wind energy method are combined, utilize the principle of thermal wind, the wind tower generating of building similar chimney has entered experimental stage.The air in the heat absorption space of solar energy heating Feng Ta bottom, hot air upwards flows, and drives the wind turbine power generation in the wind tower.The wind tower generally all will be built 300 meters height, and just having can the actual value of utilizing.In order to improve the generating efficiency of wind tower, the nature upward flow is changed into the rotation upward flow, its method mainly contains two kinds: the one, and " tiltedly tradition of a family tower " promptly sets up a wind tower with the unified oblique unlatching wicket of number fan, the outer air-flow of tower introduced in the tower forming swirling eddy; The 2nd, " off-centre is injected gas " promptly tangentially injects high-temperature gas around tower, produce swirling eddy thus.Disclosed " artificial spout generating mechanism " or " artificial tornado electricity generating system " etc. belongs to this class methods among patent CN 96109612.8, CN 200510054911.3, the CN 200510126606.0.Compare with solar energy wind tower, rotate the upward flow electricity-generating method at present and exist following deficiency: 1) be still the temperature difference of utilizing at the bottom of cat head and the tower, need set up the high tower of hundreds of rice; 2) adopt high-temperature injection to obtain swirling eddy, itself needs wasteful calorimetric energy and momentum; 3) after work a period of time, owing to there is not temperature difference on the substantially horizontal in tower, add the boundary friction effect, rotation center of vorticity meeting Lock-out does not have continuous stability, will become simple wind tower.
Summary of the invention
At above-mentioned the deficiencies in the prior art, the purpose of this invention is to provide a kind of method and device thereof that utilizes the controlled thermal induced cyclone power generation of solar energy, realize low tower, efficient, lasting, stable electric generation.
Technological scheme of the present invention is achieved in that
A kind of solar energy heat-induced cyclone power generation method, arrange that at first solar energy heat build-up canopy is with the air heating in the physical environment, air after will heating is then guided Feng Ta into, hot air is changed into around the rotatablely moving of Feng Ta center by straight line motion radially, the impeller collection electricity generating device that promotes to be arranged in the wind tower makes the kinetic energy of THE HURRICANE FLOW FIELD be converted into electric energy again.
A kind of solar energy heat-induced cyclone power generation method, arrange that at first solar energy heat build-up canopy is with the air heating in the physical environment, the rotary air valve that air after will heating is then guided the Feng Ta ingress into, by rotary air valve hot air is changed into rotatablely moving around the Feng Ta center by straight line motion radially, secondly the solar heat collector panel with the Feng Ta center further heats central gas stream, quickens air-flow and upwards lifts; Simultaneously, with being arranged in wind tower cooling jacket on every side to cooling off near the wall, near wall, form downward air-flow, under solar heat collector panel and cooling jacket acting in conjunction, in the radial cross section of wind tower, form and reflux, in lateral cross section, form circulation, the swabbing effect of aggravation wind tower, the impeller collection electricity generating device that promotes to be arranged in the wind tower makes the kinetic energy of THE HURRICANE FLOW FIELD be converted into electric energy.
A kind of solar energy heat-induced cyclone power generation device, comprise a wind tower 1, wind tower 1 top disposes a diffuser 2, the export center of diffuser 2 disposes an impeller 3, impeller 3 is connected by the generator 10 of central shaft 4 with wind tower 1 bottom, dispose solar energy heat build-up canopy 7 around wind tower 1 lower end, solar energy heat build-up canopy 7 is connected by rotary air valve 8 and wind tower 1.Also dispose cooling jacket 5 around wind tower 1 bottom; Dispose tangential hot blast supply spout 6 on wind tower 1 bottom, rotary air valve 8, the other end of hot blast supply spout 6 links to each other with heat-accumulating area, and tangential hot blast supply spout 6 is arranged obliquely, horizontal by 3 ° of-6 ° of inclination angles; On the end of rotary air valve 8, wind tower 1 center portion disposes solar heat collector panel 9.
The present invention utilizes wind tower 1, solar energy heat build-up canopy 7 and guiding air door 8 to produce artificial dust devil or heat becomes whirlwind; At wind tower 1 center arrangement impeller 3 and transmission shaft is central shaft 4; Setting up assisted heating device is solar heat collector panel 9 and cooling jacket 5; Thereby reasonably organized flow field in tower, made heat become the whirlwind wind field to continue, stablize, promoted impeller 3 rotations on Feng Ta top, and driven generator 10 generatings.
Description of drawings
Fig. 1 is that the pinniform of atmosphere near the ground is to flow graph.
Fig. 2 forms schematic representation for the nature dust devil.
Fig. 3 is hot born of the same parents' schematic representation that heat becomes whirlwind wind tower.
Fig. 4 is a hot induced cyclone power generation device schematic representation of the present invention.
Fig. 5 is solar energy storage area distribution map among the present invention
Wherein, 1 is the wind tower, and 2 is diffuser, and 3 is impeller, and 4 is central shaft, and 5 is cooling jacket, and 6 is tangential hot blast supply spout, and 7 is solar energy heat build-up canopy, and 8 is rotary air valve, and 9 is solar heat collector panel, and 10 is generator
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and working principle are elaborated.
As shown in Figure 1, because the part, ground by heat intensive, forms one deck overfire air layer near ground, have huge temperature gradient at vertical direction, this is a kind of unstable state, can produce at random on the ground and rise and the staggered pinniform thermoconvection born of the same parents that descend.Because the inequality of being heated everywhere, the convective cell who has has disappeared, and have so develop into the hot gas capsule.Along with the rising of these hot gas capsules, surface air thermotropism air bag place converges, the vacancy that the supplemental heat air rises and causes, and advantage hot gas capsule wraps gradually holds weak hot gas capsule under the arm, finally forms a rising core area.Simultaneously, ambient windstream on every side gives the hot gas capsule an initial moment of momentum, and moment of momentum makes the air-flow rotational speed increase gradually along with converging of air-flow.
As shown in Figure 2, if the moment of momentum of air-flow is enough big, can form the vertical vortex of high speed rotating on every side in the bottom of rising core area, if there are dust, dust and other light thin object in the face of land, then roll with the wind, form visible dirt post, promptly so-called dust devil.
Heat becomes whirlwind is at random process, and concrete when and where all is indefinite.Utilize heat to become the energy of whirlwind, its most important condition is that the when and where of its generation is artificially controlled.Two primary conditions that heat becomes whirlwind to satisfy are: the one, have the thermoconvection born of the same parents of strong center ascending motion, and the 2nd, air mass has certain angle of rotation momentum.In first condition, it is to be developed by hot born of the same parents to form that heat becomes whirlwind, and the lamella space of peripheral air by ground proximity flows to hot born of the same parents center portion after by the ground heating, and its rotating energy is strengthened in hot born of the same parents center portion, finally forms the flow field that heat becomes whirlwind.
As shown in Figure 3, for satisfying first condition that heat becomes whirlwind, on smooth ground, build high about 30 a meters wind tower 1; Air in the wind tower 1 is heated, artificially make initial hot born of the same parents; Build the solar energy heat build-up canopy of making apart from the ground certain altitude, by greenhouse material such as organic glass 7 around simultaneously at the bottom of tower, solar energy heat build-up canopy 7 can produce strong greenhouse effect, make that the air in the solar energy heat build-up canopy 7 following zones is acutely heated, but because the high stack effect of wind tower 1, Hot air quilt around at the bottom of the tower is forced to suck in the wind tower 1, because the change in flow field, other generations of hot born of the same parents at random around also having suppressed so can realize wider solar energy collecting in wind tower 1.In order to realize satisfying second condition that heat becomes whirlwind, can guiding rotary air valve 8 be installed in the ingress of wind tower 1, make the air mass that enters in the wind tower 1 have certain angle of rotation momentum, thereby realize that heat becomes the flow field in tower of whirlwind.
Usually, the life cycle of occurring in nature dust devil generally had only about ten minutes, and dust devil moves towards the major reason of withering away: the one, and the dust devil center has one cool air to move from the top down, makes to flow blending and weaken; The 2nd, because the heat exchange of air-flow makes and keeps weakened, the disappearance of temperature gradient that air mass rotates the power-substantially horizontal of ascending motion.As shown in Figure 4, the present invention has adopted two kinds of measures to suppress heat to become slackening of whirlwind: the one, impeller 3 and transmission central shaft 4 are fixed on the central authorities of wind tower 1, and can suppress the downward motion of central cool air effectively; The 2nd, setting up an assistant heating plate in wind tower 1 bottom is solar heat collector panel 9, sets up cooling jacket 5 in wind tower 1 bottom outer wall, forms intermediate heat in the wind tower 1, cold temperature gradient all around, and maintaining heat becomes the temperature field of whirlwind and the forced convection in the wind tower.As long as there is lasting energy to supply with at the bottom of the tower, heat becomes whirlwind just can continue.In order to guarantee also can to generate electricity at night, mode that can be by accumulation of heat is by carrying out the heat supply to wind tower 1.Heat-accumulating area is arranged on solar heat canopy periphery, and as shown in Figure 5, the size of heat-accumulating area is provided with according to the thermal wind tower institute's calorific requirement of generating electricity night, and heat-accumulating area adopts tangential hot blast supply spout 6 to be connected with the thermal wind tower between night.When hot blast rate in the wind tower was not enough, the solar energy of opening the heat-accumulating area storage replenished, and guarantees that the thermal wind tower turns round continuously.
Become the top of whirlwind wind tower 1 in heat, a diffuser 2 is set, an impeller 3 is installed in diffuser 2 outlets, and impeller shaft connects with central shaft 4, and the other end of central shaft 4 connects with generator 10.Heat becomes whirlwind to promote the blade rotation of impeller 3, is the rotation energy of impeller 3 with the rotation wind energy transformation, and impeller 3 central shafts 4 drive generator 10 generatings.
In sum, as shown in Figure 4, the key device parts that a kind of controlled thermal induced cyclone power generation device that utilizes solar energy relates to have: the height of wind tower tower that 1-builds can become heat the flow field control of whirlwind in tower greater than near maximum heat born of the same parents' height; Solar energy heat build-up canopy 7-with tower at the bottom of near hot air be drawn into wind tower 1 inside, solar energy heat build-up canopy 7 is with making such as greenhouse material such as organic glass, to reach the purpose of heat build-up drainage; Rotary air valve 8-is in order to form the rotation upward flow effectively, rotary air valve 8 is arranged in ingress at wind tower 1, can quicken the generation that heat becomes cyclonic air flow, make to enter in the wind tower 1 air throughput unanimity in arbitrary lateral cross section in the air door height, the air-flow rotation evenly in the radial cross section; Solar heat collector panel 9-is an auxiliary heater, keep the high temperature upward flow at wind tower 1 center, center bottom design solar heat collector panel 9 heating incoming flow air at wind tower 1 make air quicken to move upward, and increase bottom degree of vacuum and enter wind tower 1 inside with suction surrounding atmosphere;-cooling jacket 5: arrange one deck heat exchanging water-jacket 5 in Feng Ta middle and lower part periphery, cooling surrounding atmosphere guarantees that heat becomes the needed temperature field of whirlwind to distribute; Central shaft 4 and the center arrangement central shaft 4 of generator 10-at wind tower 1 are arranged in the top of wind tower with impeller 3, stop the sinking of cold airflow.
Solar energy heat-induced cyclone power generation device working principle of the present invention:
In conjunction with Fig. 4, solar energy heat build-up canopy 7 not only can be built up solar energy collected in the canopy, the hot air outside the canopy can also be drawn in the canopy after 1 work of wind tower.The heat build-up canopy has also suppressed the generation of other thermal around the tower when existing, make the uniqueness of the hot air moving direction that solar energy heat build-up canopy 7 collects, and hot air only moves in tower.Solar energy heat build-up canopy 7 connects with wind tower 1 by rotary air valve 8, and the guide function of rotary air valve 8 has guaranteed to enter air-flow and tangentially entered in the tower.Rotary air valve 8 is except that guide function, another main function is divided equally air-flow exactly, the guide vane of rotary air valve 8 extends to the center of wind tower 1 always from wind tower 1 periphery, the guide vane inclination angle of rotary air valve 8 can guarantee that along wind tower 1 radial variation swirling eddy evenly distributed at 1 end of wind tower.Swirling eddy lifts in wind tower 1 and forms the rotation upward flow.
Cooperate the solar heat collector panel 9 of wind tower 1 bottom centre and the 5 pairs of swirling eddies of cooling jacket around the tower further to strengthen, the generation that impels dust devil in the wind tower 1 with keep.Solar heat collector panel 9 is to design according to the streamline in flow field herein, can alleviate the interference of its stream field.Swirling eddy in the tower is through diffuser 2 decelerations, the supercharging of cat head, and promotion impeller 3 rotates.Impeller 3 drives bottom generator 10 by central shaft 4 and carries out work.Central shaft 4 designs can suppress the disappearance of dust devil in the tower at the center of wind tower 1, bottom generator 10 is imbedded the underground interference that can avoid it to flow field in tower.Driving source of the present invention is from the solar energy that goes out surface radiation, and collecting these solar devices is to be arranged in tower solar energy heat build-up canopy 7 on every side.Supply with the deficiency of hot airs in order to remedy night long-pending hot canopy 7, designed tangential hot blast supply spout 6, the mode by the accumulation of heat on daytime is carried out the heat supply at night in to wind tower 1.Tangential hot blast supply spout 6 is arranged obliquely, horizontal by 3 ° of-6 ° of inclination angles, to increase the momentum that hot air flow upwards lifts.
To build 10,000 kilowatts solar energy heat-induced cyclone power generation station is example, and embodiments of the present invention are illustrated.Wind tower 1 is set up in smooth zone on ground, tower height 30m, lower end diameter 50m, upper end diameter 10m; The high 1m of diffusion mouth [2], opening diameter 12m; The high 1m of air door; Evenly arrange solar energy heat build-up canopy 7 in air door sustained height, 10 meters scopes of tower centre bottom radius, its diameter is 100m, and it is 250W/m that heat is provided
2 Tower body 1 can adopt reinforced concrete construction, also can all adopt steel structure structure profile, transparent material plexiglass covering to form with solar energy heat build-up canopy 7.Outer wall at wind tower 1 is arranged cooling jacket 5, and heat exchange quantity is 250W/m
2
The annual mean radiation intensity of face of land 24h is 0.24kW/m
2, promptly 2 * 10
5KW/km
2During 300K, the density and the specific heat at constant pressure of air are respectively ρ=1.29kg/m
3, c
p=1.005kJ/ (kg*K) produces heat and becomes the whirlwind air on average to need temperature rise 20K, and design wind cat head air velocity v=20m/s needs to expend heat energy so:
Q＝π·r
2·v·ρ·c
p·ΔT＝3.14×5
2×20×1.29×1.0058×20＝4.05×10
4kW
This heat be by solar energy heat build-up canopy 7 hot airs run to from 1 end of wind tower cat head the theoretical maximum kinetic energy that can produce.At the wind cat head, heat becomes whirlwind to promote the blade rotary electrification, and the efficient of wind-power electricity generation is generally 30～40%, and generated energy can be estimated as so
W＝4.05×10
4×30％＝1.2×10
4kW。
Claims (6)
1, a kind of solar energy heat-induced cyclone power generation method, it is characterized in that, arrange that at first solar energy heat build-up canopy is with the air heating in the physical environment, air after will heating is then guided Feng Ta into, hot air is changed into around the rotatablely moving of Feng Ta center by straight line motion radially, the impeller collection electricity generating device that promotes to be arranged in the wind tower makes the kinetic energy of THE HURRICANE FLOW FIELD be converted into electric energy again.
2, according to the said a kind of solar energy heat-induced cyclone power generation method of claim 1, it is characterized in that, arrange that at first solar energy heat build-up canopy is with the air heating in the physical environment, the rotary air valve that air after will heating is then guided the Feng Ta ingress into, by rotary air valve hot air is changed into rotatablely moving around the Feng Ta center by straight line motion radially, secondly the solar heat collector panel with the Feng Ta center further heats central gas stream, quickens air-flow and upwards lifts; Simultaneously, with being arranged in wind tower cooling jacket on every side to cooling off near the wall, near wall, form downward air-flow, under solar heat collector panel and cooling jacket acting in conjunction, in the radial cross section of wind tower, form and reflux, in lateral cross section, form circulation, the swabbing effect of aggravation wind tower, the impeller collection electricity generating device that promotes to be arranged in the wind tower makes the kinetic energy of THE HURRICANE FLOW FIELD be converted into electric energy.
3, a kind of solar energy heat-induced cyclone power generation device, it is characterized in that, comprise Yi Fengta (1), wind tower (1) top disposes a diffuser (2), the export center of diffuser (2) disposes an impeller (3), impeller (3) is connected by the generator (10) of central shaft (4) with wind tower (1) bottom, disposes solar energy heat build-up canopy (7) around wind tower (1) lower end, and solar energy heat build-up canopy (7) is connected by rotary air valve (8) and wind tower 1.
4, according to the said a kind of solar energy heat-induced cyclone power generation device of claim 3, it is characterized in that, also dispose cooling jacket (5) around wind tower (1) bottom.
5, according to the said a kind of solar energy heat-induced cyclone power generation device of claim 3, it is characterized in that, on Feng Ta (1) bottom, rotary air valve (8), dispose tangential hot blast supply spout (6), the other end of hot blast supply spout (6) links to each other with heat-accumulating area, tangential hot blast supply spout (6) is arranged obliquely, horizontal by 3 ° of-6 ° of inclination angles.
6, according to the said a kind of solar energy heat-induced cyclone power generation device of claim 3, it is characterized in that, on the end of rotary air valve (8), wind tower (1) center portion disposes solar heat collector panel (9).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644552A (en) * | 2011-02-19 | 2012-08-22 | 北海银通商务有限公司 | Cluster wind tunnel power tower |
| CN107061175A (en) * | 2017-06-28 | 2017-08-18 | 姚珍汉 | Solar energy and wind energy dual intensity wind generator system |
-
2008
- 2008-05-14 CN CN2008100181887A patent/CN101307749B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644552A (en) * | 2011-02-19 | 2012-08-22 | 北海银通商务有限公司 | Cluster wind tunnel power tower |
| CN107061175A (en) * | 2017-06-28 | 2017-08-18 | 姚珍汉 | Solar energy and wind energy dual intensity wind generator system |
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| CN101307749B (en) | 2010-08-25 |
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