CN201093785Y - Solar energy light concentrating heat collecting device - Google Patents

Solar energy light concentrating heat collecting device Download PDF

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Publication number
CN201093785Y
CN201093785Y CNU2007200454993U CN200720045499U CN201093785Y CN 201093785 Y CN201093785 Y CN 201093785Y CN U2007200454993 U CNU2007200454993 U CN U2007200454993U CN 200720045499 U CN200720045499 U CN 200720045499U CN 201093785 Y CN201093785 Y CN 201093785Y
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parabola
angle
limit
transversal
plane
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CNU2007200454993U
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Chinese (zh)
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黄永年
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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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Abstract

The utility model discloses a solar energy photospot collector in the technical field of the solar energy heat utilization, and the solar energy photospot collector comprises a casing and a heat-collecting pipe, wherein, an insulation board is arranged in the casing; the surface of the insulation board is provided with a plurality of photospot reflection boards in parallel; the shape of the reflection surface of the photospot reflection board is of a space curved surface; a transversal line at any position of the space curved surface is of a symmetrical curve which takes a vertical line of a polar axis in a plane polar coordinates system as a symmetrical axis, and the vertical line passes through a polar point; transversals of one side of the symmetrical axis are composed of more than three sections of parabolas which are mutually connected in sequence. Each section of parabola is corresponding to an optimum sunshine reflected value in a time slice. The whole body can obtain optimum aggregation effect, and can improve heat efficiency. The utility model can be made into a solar energy collector which has high temperature and wide use.

Description

A kind of solar concentrating collector
Technical field
The utility model relates to solar energy utilization technique.
Background technology
Utilize light gathering baffle-board with more large-area sunlight reflected to heat collection device, to strengthen Heat-collecting effect, improve the temperature of medium in the heat collection device, the existing many people of this problem obtain achievement in research, the employing V-arrangement reflector that has, the employing transversal that has is the barrel-shaped reflector of circular arc, and adopting transversal in addition is the curved reflector that the circular arc of different curvature radius is formed by connecting, and the employing transversal that also has is the reflector of the involute of circle; In the prior art, a kind of plate type solar light gathering baffle-board is arranged, its patent No. is 02217701.9, it comprises housing, be provided with warming plate in the housing, the warming plate surface is provided with some light gathering baffle-boards side by side, and light gathering baffle-board can mold pressing be made one, the cross section of every light gathering baffle-board is constituted by circular arc, parabola, involute and circular arc, is provided with thermal-collecting tube at its focus place.During its work, the light that shines on the light gathering baffle-board is reflected on the thermal-collecting tube, and heat energy is absorbed by thermal-collecting tube, and its weak point is: the efficient of its reflection heat absorption is still not ideal enough, has the higher light of portion of energy to fail to converge on the thermal-collecting tube.
The utility model content
The purpose of this utility model is to design a kind of solar concentrating collector, make its can be to greatest extent with arrive reflecting plate than the high light line reflection to the heat collection device surface.
The purpose of this utility model is achieved like this: a kind of solar concentrating collector, comprise housing and thermal-collecting tube, be provided with warming plate in the housing, the warming plate surface is provided with some condenser grooves and light gathering baffle-board side by side, the reflective surface of described light gathering baffle-board is shaped as a space curved surface, the transversal of the optional position of this space curved surface is the symmetrical curve of symmetry axis for the vertical line with the mistakes limit of pole axis in the polar coordinate system in the plane, and the transversal of described symmetry axis one side is by the continuous parabola L of order more than three sections 0, L 1, L 2L iForm, each parabolic focus all is positioned at the limit of polar coordinate system in the plane, each section parabola L iEstablish an equation under satisfying:
Figure S2007200454993D00021
Wherein, i=0,1,2,3,4,5......
ρ is that the some distance to the extreme on the parabola is utmost point footpath;
P iBe parabolical burnt parameter, be parabolical summit two times to focal length;
θ is the polar angle or the argument of the point on the parabola in the polar coordinate system, 90 °＜θ≤270 °;
The deflection angle of  parabolic bobbin (being parabolical symmetry axis) refers to that the parabolic bobbin is the angle that the center rotates in the counterclockwise direction with the limit;
L 1With L 0Intersection point A 1(ρ 1, θ 1)
L 2With L 1Intersection point A 2(ρ 2, θ 2)
L iWith L I-1Intersection point A i(ρ i, θ i)
Parabola L 0The between perpendiculars angle of pole axis of axle (being symmetry axis) and polar coordinate system in the plane be 0, i.e. parabola L 0Not rotation, anglec of rotation  0Be 0;
Parabola L 1The relative L of axle 0The axle in the counterclockwise direction the rotation, pivot is the limit of polar coordinate system in the plane, the angle of rotation is  1, the title deflection angle is  1
Parabola L 2Deflection angle is  2
Parabola L iDeflection angle is  i
θ 1Corresponding  1: the point of arrival (ρ 1, θ 1) the average incidence angle of locating strong relatively incident ray is representative with such straight line, this straight line is  with the between perpendiculars angle of the pole axis of crossing limit 1, deflection angle  2Deflection angle  iThe rest may be inferred; Cross the vertical line parabola L just of the pole axis of limit 0Axle;
Adjacent parabolical burnt parameter P value establishes an equation under satisfying:
Figure S2007200454993D00022
Wherein: i=0,1,2,3
0＝0 0＜ 1＜ 2＜ 3＜……＜ i；
To be described transversal along the vertical direction on its plane, place stretch described space curved surface forms, and each section transversal is that the parabolical public focus of each section stretches in line, and described thermal-collecting tube is provided with along this straight line.
Above-mentioned light gathering baffle-board can be some monomers, also can be connected as a single entity, and the utility model adopts plurality of sections parabola to form a light gathering baffle-board continuously.
The utility model employing plurality of sections parabola continues and forms the transversal of a light gathering baffle-board, with any solar incident ray that the parabolic bobbin parallels, all can converge to corresponding parabolic focus, because being arranged on heat collecting elements itself such as limit place (also being each parabola focus place) thermal-collecting tube or finned thermal-collecting tube has certain volume, the angle of event and corresponding parabolic bobbin all can be reflexed on the heat collecting element by this parabolic segment reflective surface less than the solar incident ray of certain value, this light gathering baffle-board converges incident ray strong relatively in the back before midday certain hour scope to obtain the spotlight effect with respect to other shape optically focused reflective surface the best, each parabolic segment is because different at a distance of the distance of focus, so the time length and the zero-time of the sunshine after converging before midday in the certain hour scope are different, and the solar incident ray that is arrived on each parabolic segment reflective surface strong relatively that of its sunlight strength in whole period all reflection converge to the heat collecting element surface, its collecting efficiency is higher, can make the medium in the thermal-collecting tube produce very high temperature.With space curved surface described in the utility model as reflective caustic surface owing to be non-tracking, in fact also have in one day a certain amount of weak relatively sunray can not optically focused to heat collecting element, but has best spotlight effect in theory as the reflective caustic surface of Nontracking with space curved surface described in the utility model, because any one section curved surface of space curved surface described in the utility model in theory all can accomplish the solar incident ray that is arrived on this section reflective surface strong relatively that of its sunlight strength in whole period all reflection converge to the heat collecting element surface, and the reflective caustic surface reflection of other shape to converge its light of solar incident ray in a period of time of same length be not light in that a period of time the strongest in one day.The utility model can be made into the wider solar thermal collector of the higher purposes of temperature.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is that the transversal of space curve forms schematic diagram;
Fig. 3 is the transversal structural representation of space curve;
The specific embodiment
As Fig. 1-3, be a kind of solar concentrating collector, comprise housing 4 and thermal-collecting tube 1, be provided with warming plate 3 in the housing 4, warming plate 3 surfaces are provided with some light gathering baffle-boards 2 side by side, the reflective surface of described light gathering baffle-board 2 is shaped as a space curved surface, and the transversal of its optional position is the symmetrical curve of symmetry axis for the vertical line with the mistakes limit of pole axis, and the transversal of described symmetry axis one side is by the continuous parabola L of three sections orders 0, L 1, L 2L iForm, each section parabolic focus all is positioned at the limit of polar coordinate system in the plane, each section parabola L iEstablish an equation under satisfying:
Figure S2007200454993D00041
Wherein, i=0,1,2,3;
ρ is that the some distance to the extreme on the parabola is utmost point footpath;
P iBe parabolical burnt parameter, be parabolical summit two times to focal length;
θ is the polar angle or the argument of the point on the parabola in the polar coordinate system, 90 °＜θ≤270 °;
The deflection angle of  parabolic bobbin (being parabolical symmetry axis) refers to that the parabolic bobbin is the angle that the center rotates in the counterclockwise direction with the limit;
L 1With L 0Intersection point A 1(ρ 1, θ 1)
L 2With L 1Intersection point A 2(ρ 2, θ 2)
L 3With L 2Intersection point A 3(ρ 3, θ 3)
Parabola L 0The between perpendiculars angle of pole axis of axle (being symmetry axis) and polar coordinate system in the plane be 0, i.e. parabola L 0Not rotation, anglec of rotation  0Be 0;
L 0Mathematic(al) representation:
ρ = P 0 [ 1 + Sinθ ] Cos 2 θ
P 0The Breadth Maximum B that depends on the incident ray family that wants to assemble 1B 2, general desirable B 1B 2=2P 0
L 1Mathematic(al) representation:
Figure S2007200454993D00043
Parabola L 1The relative L of axle 0The axle in the counterclockwise direction the rotation, pivot is the limit of polar coordinate system in the plane, the angle of rotation is  1, the title deflection angle is  1
Parabola L 2Deflection angle is  2
Parabola L 3Deflection angle is  3
θ 1Corresponding  1: because the point of arrival (ρ 1, 0 1) the average incidence angle of locating strong relatively incident ray is representative with such straight line, this straight line is  with the between perpendiculars angle of the pole axis of crossing limit 1,  in other words 1Determine deflection angle  by physical parameter 2Deflection angle  iThe rest may be inferred; Cross the vertical line parabola L just of the pole axis of limit 0Axle;
Adjacent parabolical burnt parameter P value establishes an equation under satisfying:
Figure S2007200454993D00051
Wherein: i=0,1,2,3
0＝0 0＜ 1＜ 2＜ 3。
To be described transversal along the vertical direction on its plane, place stretch described space curved surface forms.
At parabola L 0Last A 1Point is α for the subtended angle of heat collector, and arrives A 1The incident ray of point is distributed in the β angular region, and β＞α establishes A 1M is parallel to parabola L 0Axle, heat collector can only receive and arrive A 1Point is established ∠ PA smaller or equal to the incident ray in the α angular region 1This is to arrive A among one day for Q=α 1Point is no more than the strongest light of strong angle α scope, A 1N is ∠ P 1The angular bisector of Q makes ∠ MA 1N= 1Arrive A in other words 1The average incidence angle of light the strongest in the middle of may be received by heat collector one day is by straight line A 1The incidence angle representative of N.
If we will be through A 1A certain P value of point changes, focus still at O point and parabolical rotate  1The angle so just can make ∠ PA 1Incident ray in the Q scope reflexes to ∠ PA like clockwork 1The R scope.With the O point is center rotation  1The new parabola at angle is L 1Parabola.
A on parabola 1Put more left, and the average incidence angle of the incident ray of arrival all is with parabola L 0The incidence angle of parallel lines of axle be representative, so A 1Point is L left 0Parabola is best, needn't rotate.
A on parabola 1Point is A to the right 2Article one, new parabola still is focus rotation  with O 2The angle, its burnt parameter P changes into P 2, new parabola is L 2Same reason also can guarantee to arrive A in one day 2What the strongest light that can be reflected to heat collector of point was not omitted in theory converges to the heat collector surface.
By that analogy, when transversal is made up of the parabola more than three sections, the parabola of corresponding some the bests of some spots.A 1Point is at L 1On the parabola, A 2Point is at L 2On the parabola, A iPoint is at L iOn the parabola, the enough big following new curve of i just can accurately assemble sunlight as much as possible to the heat collector until reaching best in theory convergent effect.
New curve is continued by following point and following parabola and forms:
L 0-A 1(point)-L 1-A 2-L 2-A 3-...-A i-L i
If the i value is enough big, what the new curve of above-mentioned new curve and following expression just do not have respectively:
L 0-A 1(point)-A 2-A 3-A i
Like this, the transversal of this curved surface reflector can be made up of the plurality of sections parabolic segment, crossing the vertical line of initial point perpendicular to pole axis is that each section transversal line of Y-axis both sides is symmetrical, as shown in Figure 2, the all corresponding the strongest incident ray of a period of time of each section reflector, the combination of its integral body can obtain best spotlight effect.To be described transversal along the vertical direction on its plane, place stretch described space curved surface forms, the focus of each transversal of this curved surface reflector (being the parabolical public focus of each section) stretches in line, along this straight line solar energy heat collection pipe 1 can be set, can be made into the wider solar thermal collector of the higher purposes of temperature.Simultaneously do not reduce its endotherm area again for reducing the thermal-collecting tube size, can do the thermal-collecting tube caliber less, simultaneously, at least three heat absorption fins are set outside thermal-collecting tube.

Claims (2)

1. solar concentrating collector, comprise housing and thermal-collecting tube, be provided with warming plate in the housing, the warming plate surface is provided with some light gathering baffle-boards side by side, it is characterized in that: the reflective surface of described light gathering baffle-board is shaped as a space curved surface, the transversal of this space curved surface optional position is the symmetrical curve of symmetry axis for the vertical line with the mistakes limit of pole axis in the polar coordinate system in the plane, and the transversal of described symmetry axis one side is by the continuous parabola L of order more than three sections 0, L 1, L 2L iForm, each parabolic focus all is positioned at the limit of polar coordinate system in the plane, each section parabola L iEstablish an equation under satisfying:
Figure S2007200454993C00011
Wherein, i=0,1,2,3,4,5......
ρ is that the some distance to the extreme on the parabola is utmost point footpath;
P iBe parabolical burnt parameter, be parabolical summit two times to focal length;
θ is the polar angle or the argument of the point on the parabola in the polar coordinate system, 90 °＜θ≤270 °;
The deflection angle of  parabolic bobbin refers to that the parabolic bobbin is the angle that the center rotates in the counterclockwise direction with the limit;
L 1With L 0Intersection point A 1(ρ 1, θ 1)
L 2With L 1Intersection point A 2(ρ 2, θ 2)
L iWith L I-1Intersection point A i(ρ i, θ i)
Parabola L 0The between perpendiculars angle of axle and the pole axis of polar coordinate system in the plane be 0, i.e. parabola L 0Not rotation, anglec of rotation  0Be 0;
Parabola L 1The relative L of axle 0The axle in the counterclockwise direction the rotation, pivot is the limit of polar coordinate system in the plane, the angle of rotation is  1, the title deflection angle is  1
Parabola L 2Deflection angle is  2
Parabola L iDeflection angle is  i
θ 1Corresponding  1: the point of arrival (ρ 1, θ 1) the average incidence angle of locating strong relatively incident ray is representative with such straight line, this straight line is  with the between perpendiculars angle of the pole axis of crossing limit 1, deflection angle  2Deflection angle  iThe rest may be inferred; Cross the vertical line parabola L just of the pole axis of limit 0Axle;
Adjacent parabolical burnt parameter P value establishes an equation under satisfying:
Figure S2007200454993C00021
Wherein: i=0,1,2,3
0＝0 0＜ 1＜ 2＜ 3＜……＜ i；
To be described transversal along the vertical direction on its plane, place stretch space curved surface forms, the focus of each transversal in line, described thermal-collecting tube is provided with along this straight line.
2. a kind of solar concentrating collector according to claim 1 is characterized in that: described some light gathering baffle-boards are connected as a single entity.
CNU2007200454993U 2007-08-23 2007-08-23 Solar energy light concentrating heat collecting device Expired - Fee Related CN201093785Y (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104570307A (en) * 2014-12-29 2015-04-29 武汉开锐智能设备有限公司 Light-gathering structure of infrared heater
CN107218734A (en) * 2017-06-22 2017-09-29 刘继宏 A kind of solar powered heating cooling combined supply system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104570307A (en) * 2014-12-29 2015-04-29 武汉开锐智能设备有限公司 Light-gathering structure of infrared heater
CN107218734A (en) * 2017-06-22 2017-09-29 刘继宏 A kind of solar powered heating cooling combined supply system
CN107218734B (en) * 2017-06-22 2019-07-02 刘霁虹 The solar powered heating of one kind is for cold triple supply system

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Granted publication date: 20080730

Termination date: 20120823