CN101650082A

CN101650082A - Method for controlling and tracking sun by a specific homotaxial according to time and high-temperature heat-gathering device

Info

Publication number: CN101650082A
Application number: CN200910016800A
Authority: CN
Inventors: 王新庚
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-20
Filing date: 2009-07-20
Publication date: 2010-02-17

Abstract

The invention provides a method for controlling and tracking the sun by a specific homotaxial according to time and a high-temperature heat-gathering device, aiming at solving the defects that a biaxial device for omnidirectional tracking the sun is difficult to be sealed by heating medium, heat insulation is difficult and the like during medium-high temperature heat gathering. The method comprises the following steps: the height of tracking the sun is projected on a plane which passes through a meridian line and is vertical to the horizontal plane, wherein the included angle of the projectionand the horizontal plane, theta=F (phi, beta), is the function of solar azimuth phi and altitude angle beta. The high-temperature heat-gathering device implementing the tracking method uses a groove-shaped parabolic cylinder line-focus heat gathering device 3; the homotaxial thereof is coincide with a heat-gathering vacuum glass tube 1 arranged on a focusing line; the placed objects are fixed bya bracket 2; the heat-gathering device is driven by an actuator 5 through a sector gear 4 to rotate around the homotaxial for tracking the theta to realize line-focus high-temperature heat gathering.The tracking device is particularly applicable to a medium-high temperature heat-gathering system (like an industrial boiler), can be used as heat-gathering equipment of large-scale solar thermal power systems, and makes a contribution to reducing green house gas emission.

Description

Control by time variable with specific single shaft and to follow the tracks of the method and the high-temperature heat-gathering device of the sun

Affiliated field

The present invention relates to a kind of controlling by time variable and follow the tracks of the method and the high-temperature heat-gathering device of the sun, can be widely used in the medium and high temperature solar energy industry with specific single shaft.

Background technology

For utilizing solar energy to obtain high temperature, need follow the tracks of and be focused on the sun.And at present, follow the tracks of the device of the sun, mostly be the twin shaft omnidirectional tracking greatly, when this device being used for high temperature (seven, 800 degree) thermal-arrest, because the conveyance conduit of heated medium is movable, bring very big difficulty therefore for sealing anti-leak and insulation, thereby this tracking means may be used widely by the high temperature industrial field in solar energy hardly.

Summary of the invention

Drawback when being used for high-temperature heat-gathering in order to solve twin shaft omnidirectional tracking device the invention provides a kind of method and high-temperature heat-gathering device of controlling by time variable the sun is followed the tracks of with specific single shaft.

It " single shaft " of the present invention is followed the tracks of, and is not present existing the so-called uniaxiality tracking of following the tracks of solar azimuth.This uniaxiality tracking, neither only follow the tracks of the orientation of the sun, neither only follow the tracks of the height of the sun, but the height of following the tracks of the sun is by the projection on meridian and the plane vertical with horizontal plane, and the angle theta between this projection and the horizontal plane is synthetic by the azimuth Φ and the elevation angle β of the sun, i.e. θ=F (Φ, β) be the function of solar azimuth Φ and elevation angle β, or deduce into the function of sun altitude β and declination angle δ, hour angle H: θ=Ψ (β, δ, H).The present invention follows the tracks of this angle by " single shaft " of thing horizontal positioned, and utilizes flute profile parabolic cylinder line focus, realizes the high temperature heat build-up.

The specific embodiment

The high-temperature heat-gathering device that controlling by time variable of the above-mentioned tracking of the invention process followed the tracks of the sun, show as accompanying drawing: as described in " single shaft ", overlaps with thermal-arrest glass tube with vacuum on being positioned at flute profile parabolic cylinder focal line, the thing placement maintains static by support; Flute profile parabolic cylinder heat collector, the sector gear below it are rotated around " single shaft " by driver drives, to realize the tracking to above-mentioned " specific angle θ ".Described driver is paid by minitype speed reducing motor or stepper motor and a reduction gearing and is constituted.

Computer control part, hardware mainly are made up of single-chip microcomputer and clock chip; The technical scheme that software adopts intermitten service to follow the tracks of is write with the C Language And Assembly Language.

Beneficial effect of the present invention:

Because the conveyance conduit of thermal-arrest glass tube with vacuum and medium thereof all is fixed, be used for height thereby solved twin shaft omnidirectional tracking device During the temperature thermal-arrest, anti-leak and insulation hard problem; Again, 1. because simple in structure, with low cost, its heat collector can be done to get very long (can growing to One, 200 meter); Although 2. it is more lower slightly to the utilization rate of solar energy acceptor than the twin shaft omnidirectional tracking, when installing owing to front and back, substantially there is not screening Gear is so its floor space is wanted much less than the twin shaft omnidirectional tracking. Therefore, this single shaft tracking apparatus, but decrease solar energy is at middle high temperature The cost that use in the field is specially adapted to middle high-temperature heat collection system (for example Industrial Boiler), can be used as the collection of large-sized solar heat power generating system fully Hot equipment in sun-drenched desert, range build-up large-sized solar power station, contributes for reducing greenhouse gas emission.

Description of drawings

Accompanying drawing is specific uniaxiality tracking flute profile line focus heat collector embodiment (plan is used for miniature boiler) figure.

Among the figure: 1. glass tube with vacuum (overlap, thing place maintain static), 2. support, 3. parabolic heat collector, 4. sector gear, 5. driver of flute profile with specific " single shaft ".

Claims

1, controls by time variable with specific single shaft and follow the tracks of the method for the sun, it is characterized in that: the height that " single shaft " by the thing horizontal positioned followed the tracks of the sun is by the projection on meridian and the plane vertical with horizontal plane, angle theta=F (Φ between this projection and the horizontal plane, β) be the function of solar azimuth Φ and elevation angle β, or deduce into the function of sun altitude β and declination angle δ, hour angle H: θ=ψ (β, δ, H).

2, utilize the described method of claim 1 to control by time variable and follow the tracks of the middle high-temperature heat-gathering device of the sun with specific single shaft, it is characterized in that: described " single shaft ", overlap with the thermal-arrest glass tube with vacuum on being positioned at flute profile parabolic cylinder focal line, thing is placed and is maintained static by support.Flute profile parabolic cylinder heat collector, the sector gear below it are rotated around " single shaft " by driver drives, the described θ of claim 1 angle is followed the tracks of, thereby realize the heat build-up of line focus high temperature.