CN101988753B - Solar water heater daylighting by secondary reflective parabolic cylinder light-gathering rectangular flat pipe closed cavity - Google Patents

Solar water heater daylighting by secondary reflective parabolic cylinder light-gathering rectangular flat pipe closed cavity Download PDF

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Publication number
CN101988753B
CN101988753B CN201010525548XA CN201010525548A CN101988753B CN 101988753 B CN101988753 B CN 101988753B CN 201010525548X A CN201010525548X A CN 201010525548XA CN 201010525548 A CN201010525548 A CN 201010525548A CN 101988753 B CN101988753 B CN 101988753B
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light
receiving mechanism
gathering receiving
luminous energy
plane
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CN201010525548XA
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CN101988753A (en
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张立君
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Beijing Institute of Graphic Communication
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Beijing Institute of Graphic Communication
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

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Abstract

The invention provides a solar water heater daylighting by a secondary reflective parabolic cylinder light-gathering rectangular flat pipe closed cavity, which receives solar energy by means of reflective focusing effect of a large-plane reflector and a parabolic reflector, thus greatly improving receiving efficiency of solar energy and realizing the acquisition and receiving of solar energy under strong light and weak light environment.

Description

Secondary reflection parabolic cylinder optically focused rectangle flat tube closed housing daylighting solar water heater
Affiliated technical field:
The present invention relates to a kind of Application of Solar Energy technology; Particularly a kind of secondary reflection parabolic cylinder optically focused rectangle flat tube closed housing daylighting solar water heater that utilizes parabolic cylinder optically focused principle to receive solar energy; This device receives solar energy through the reflective focussing force of reflective surface, can significantly improve the receiving efficiency of solar energy.
Background technology:
Solar energy is a kind of clean energy resource, and is inexhaustible, nexhaustible, also can not cause environmental pollution; Nowadays; No matter in coastal cities, still in inland city, solar product gets into people's the visual field just more and more; Solar street light, solar lawn lamp, solar energy garden lamp, solar corridor lamp, bus station's desk lamp, traffic lights or the like, various solar water heaters have also been walked close to huge numbers of families.But these solar product great majority all do not have light-focusing function, cause solar energy utilization ratio low.The light intensity on solar energy receiving element surface doubles; The receiving efficiency of solar energy receiving element will double; The focus of solar energy industry technology competition at present mainly is the battle of solar energy receiving efficiency; It is thus clear that improve receiving efficiency to whole industry significance level, therefore can effectively improve the intensity of illumination of solar energy receiving element, just become the problem of paying close attention to the most when people utilize solar energy.
In recent years, in the photovoltaic matrix of some solar power stations, realized the Salar light-gathering reception abroad, domestic also have similar experimental rig, but these apparatus structures are complicated, bulky, cost is high-leveled and difficult on the solar domestic product, to obtain popularization.
Summary of the invention:
In order to overcome shortcomings such as existing beam condensing unit complicated in mechanical structure, bulky, cost height. the present invention is directed to the deficiency that prior art exists; Prior art is improved, proposed the Salar light-gathering receiving system that a kind of volume is little, simple and reliable for structure, cost is low, the optically focused reception that it can realize solar energy.
The technical solution adopted for the present invention to solve the technical problems is: a plurality of Salar light-gathering receiving mechanisms have been installed in a rectangular box; Each Salar light-gathering receiving mechanism proper alignment is in rectangular box; A water tank has been installed above rectangular box; On rectangular box, be stamped a planar transparent cover plate; The planar transparent cover plate is enclosed in each Salar light-gathering receiving mechanism in the rectangular box, and each Salar light-gathering receiving mechanism all is made up of a big plane mirror, a parabolic cylinder reflective mirror and a luminous energy receiver
The big plane mirror of each Salar light-gathering receiving mechanism is parallel to each other; The big plane mirror and the planar transparent cover plate of each Salar light-gathering receiving mechanism intersect 45; The middle seat of each big plane mirror all has a long straight light entrance slit along its long side direction; All parallel with same long limit of rectangular box and the light entrance slit big plane mirror of the light entrance slit of each big plane mirror is positioned on the same plane parallel with the planar transparent cover plate
Each luminous energy receiver all is made up of long straight semi-cylindrical transparent light guide lid of a hollow heat pipe of rectangular planes flat tube, one and the square facet mirror of two block lengths; The lower end of the hollow heat pipe of plane flat tube of each luminous energy receiver communicates with water tank through a cold water pipe; The upper end of the hollow heat pipe of plane flat tube of each luminous energy receiver communicates with water tank through a hot-water line
The both sides of the plane of symmetry of the hollow heat pipe of plane flat tube that is positioned at this luminous energy receiver of two facet mirror symmetries of each luminous energy receiver; Wherein a facet mirror long limit is connected with a long straight flange of the hollow heat pipe of this plane flat tube; A long limit of another piece facet mirror is connected with another long straight flange of the hollow heat pipe of this plane flat tube; The two other of two facet mirrors forms the light entrance slit that width is identical between the long limit; The semi-cylindrical transparent light guide of this luminous energy receiver is covered on this light entrance slit; The semi-cylindrical transparent light guide lid of each luminous energy receiver, the hollow heat pipe of plane flat tube and two facet mirrors constitute a closed cavities
The luminous energy receiver of each Salar light-gathering receiving mechanism is installed in the back side of reflective surface of the big plane mirror of this Salar light-gathering receiving mechanism; The hollow heat pipe of plane flat tube of the luminous energy receiver of each Salar light-gathering receiving mechanism is vertical with the plane of symmetry of the parabolic cylinder reflective mirror of this Salar light-gathering receiving mechanism; The both sides of the plane of symmetry of the parabolic cylinder reflective mirror that is positioned at this Salar light-gathering receiving mechanism of the hollow heat pipe symmetry of the plane flat tube of the luminous energy receiver of each Salar light-gathering receiving mechanism; The focal line of the light entrance slit between the axis of the semi-cylindrical transparent light guide of each Salar light-gathering receiving mechanism lid and two facet mirrors and the parabolic cylinder reflective mirror of this Salar light-gathering receiving mechanism overlaps; The light entrance slit of the focal line of the parabolic cylinder reflective mirror of each Salar light-gathering receiving mechanism and the big plane mirror of this Salar light-gathering receiving mechanism overlaps; The plane of symmetry of the parabolic cylinder reflective mirror of each Salar light-gathering receiving mechanism and the big plane mirror of this Salar light-gathering receiving mechanism intersect 45
When sunshine during perpendicular to the incident of planar transparent cover plate; Can both pass the light entrance slit of big plane mirror and the light entrance slit between two facet mirrors behind the reflect focalization of big plane mirror and the parabolic cylinder reflective mirror of incident ray through each Salar light-gathering receiving mechanism is radiated on the hollow heat pipe of plane flat tube of each luminous energy receiver; The plane flat tube hollow heat pipe of luminous energy through each luminous energy receiver that is radiated on the hollow heat pipe of plane flat tube of each luminous energy receiver converts heat energy into; Semi-cylindrical transparent light guide lid, the hollow heat pipe of plane flat tube and closed cavities of two facet mirrors formations because of each luminous energy receiver; And the light entrance slit that forms between two facet mirrors is very narrow; The light that gets into the light entrance slit repeatedly is radiated on the hollow heat pipe of plane flat tube of each luminous energy receiver through the reflection of two facet mirrors of each luminous energy receiver; The major part of luminous energy changes heat energy in closed cavities, therefore significantly improved the photo-thermal conversion ratio of each luminous energy receiver.
The invention has the beneficial effects as follows: the reflective focussing force through each parabolic cylinder reflective mirror has significantly improved the sun light intensity that is radiated on each luminous energy receiver; Thereby significantly improved the photo-thermal conversion ratio of each luminous energy receiver, realized that higher photo-thermal conversion ratio is all arranged under the environment of the high light and the low light level.
Description of drawings:
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is overall structure figure of the present invention.
Fig. 2 is the A-A cutaway view of overall structure figure of the present invention.
Fig. 3 is the enlarged drawing of the Salar light-gathering receiving mechanism cutaway view of the embodiment of the invention.
Fig. 4 is the sketch map of parabolic cylinder.
In the parabolic cylinder pie graph of Fig. 4: parabola L, directrix L1, summit O, focus f, symmetry axis L2, parabolic cylinder S, directrix plane S1, plane of symmetry S2, focal line L3.
The specific embodiment
In Fig. 1 and Fig. 2; The Salar light-gathering receiving mechanism one that is made up of big plane mirror 1-1-1 and parabolic cylinder reflective mirror 1-2-1 and luminous energy receiver 1-3-1 has been installed in rectangular box 3-1; The Salar light-gathering receiving mechanism two that constitutes by big plane mirror 1-1-2 and parabolic cylinder reflective mirror 1-2-2 and luminous energy receiver 1-3-2; The Salar light-gathering receiving mechanism three that constitutes by big plane mirror 1-1-3 and parabolic cylinder reflective mirror 1-2-3 and luminous energy receiver 1-3-3; The Salar light-gathering receiving mechanism four that constitutes by big plane mirror 1-1-4 and parabolic cylinder reflective mirror 1-2-4 and luminous energy receiver 1-3-4; The Salar light-gathering receiving mechanism five that constitutes by big plane mirror 1-1-5 and parabolic cylinder reflective mirror 1-2-5 and luminous energy receiver 1-3-5; The proper alignment of five Salar light-gathering receiving mechanisms is in rectangular box 3-1; On rectangular box 3-1, be stamped a planar transparent cover plate 4-1; Planar transparent cover plate 4-1 is enclosed in five Salar light-gathering receiving mechanisms in the rectangular box 3-1
The middle seat of above-mentioned five big plane mirrors all has a long straight light entrance slit along its long side direction; All parallel with the long limit of rectangular box 3-1 and the light entrance slit each big plane mirror of the light entrance slit of above-mentioned five big plane mirrors is positioned on the same plane parallel with planar transparent cover plate 4-1; The reflective plane of above-mentioned five big plane mirrors and planar transparent cover plate 4-1 intersect 45
Provided the structure of the first Salar light-gathering receiving mechanism among Fig. 3; The first Salar light-gathering receiving mechanism is made up of big plane mirror 1-1-1, parabolic cylinder reflective mirror 1-2-1 and luminous energy receiver 1-3-1 in Fig. 3; Luminous energy receiver 1-3-1 is made up of the hollow heat pipe 5-3 of a rhizoplane flat tube, semi-cylindrical transparent light guide lid 6-3, facet mirror 7-3-1 and a facet mirror 7-3-2; The lower end of the hollow heat pipe 5-3 of plane flat tube communicates with water tank 8-1 through cold water pipe 9-1-2; The upper end of the hollow heat pipe 5-3 of plane flat tube communicates with water tank 8-1 through hot-water line 9-1-1; The both sides of the plane of symmetry that is positioned at the hollow heat pipe 5-3 of plane flat tube of facet mirror 7-3-1 and facet mirror 7-3-2 symmetry; The long limit of facet mirror 7-3-1 is connected with the long straight flange of the hollow heat pipe 5-3 of plane flat tube; The long limit of facet mirror 7-3-2 is connected with another long straight flange of the hollow heat pipe 5-3 of plane flat tube; The two other of facet mirror 7-3-1 and facet mirror 7-3-2 forms the light entrance slit that width is identical between the long limit; Semi-cylindrical transparent light guide lid 6-3 covers on this light entrance slit, and semi-cylindrical transparent light guide lid 6-3, the hollow heat pipe 5-3 of plane flat tube, facet mirror 7-3-1 and facet mirror 7-3-2 constitute a closed cavities
Luminous energy receiver 1-3-1 is installed in the back side of the reflective surface of this big plane mirror 1-1-1; Flat tube hollow heat pipe 5-3 in plane is vertical with the plane of symmetry of parabolic cylinder reflective mirror 1-2-1; The hollow heat pipe 5-3 of plane flat tube symmetry is positioned at the both sides of the plane of symmetry of parabolic cylinder reflective mirror 1-2-1; The symmetry axis of semi-cylindrical transparent light guide lid 6-3 and the focal line of parabolic cylinder reflective mirror 1-2-1 overlap; The focal line of light entrance slit between facet mirror 7-3-1 and the facet mirror 7-3-2 and parabolic cylinder reflective mirror 1-2-1 overlaps; The focal line of parabolic cylinder reflective mirror 1-2-1 overlaps with the light entrance slit of big plane mirror 1-1-1, and the plane of symmetry of parabolic cylinder reflective mirror 1-2-1 intersects 45 with big plane mirror 1-1-1
When sunshine during perpendicular to planar transparent cover plate 4-1 incident; The light entrance slit and the light entrance slit between facet mirror 7-3-1 and the facet mirror 7-3-2 that can both pass big plane mirror 1-1-1 behind the reflect focalization of incident ray through big plane mirror 1-1-1 and parabolic cylinder reflective mirror 1-2-1 are radiated on the hollow heat pipe 5-3 of plane flat tube; The luminous energy that is radiated on the hollow heat pipe 5-3 of plane flat tube converts heat energy into through the hollow heat pipe 5-3 of plane flat tube; Because of semi-cylindrical transparent light guide lid 6-3, the hollow heat pipe 5-3 of plane flat tube, facet mirror 7-3-1 and facet mirror 7-3-2 constitute a closed cavities; And the light entrance slit that forms between facet mirror 7-3-1 and the facet mirror 7-3-2 is very narrow; The light that gets into the light entrance slit repeatedly is radiated on the hollow heat pipe 5-3 of plane flat tube through the reflection of facet mirror 7-3-1 and facet mirror 7-3-2; The major part of luminous energy changes heat energy in closed cavities; Therefore significantly improved the photo-thermal conversion ratio of luminous energy receiver 1-3-1, the structure of the luminous energy receiver of each Salar light-gathering receiving mechanism, each item size and luminous energy reception process are identical with luminous energy receiver 1-3-1.

Claims (1)

1. secondary reflection parabolic cylinder optically focused rectangle flat tube closed housing daylighting solar water heater; Constitute by rectangular box, water tank, cold water pipe, hot-water line, planar transparent cover plate and Salar light-gathering receiving mechanism; A plurality of Salar light-gathering receiving mechanisms have been installed in rectangular box; Each Salar light-gathering receiving mechanism all is made up of a big plane mirror, a parabolic cylinder reflective mirror and a luminous energy receiver; A water tank has been installed above rectangular box; On rectangular box, be stamped a planar transparent cover plate; The planar transparent cover plate is enclosed in each Salar light-gathering receiving mechanism in the rectangular box; Each luminous energy receiver all is made up of long straight semi-cylindrical transparent light guide lid of a hollow heat pipe of rectangular planes flat tube, one and the square facet mirror of two block lengths; It is characterized in that: the luminous energy receiver of each Salar light-gathering receiving mechanism is installed in the back side of reflective surface of the big plane mirror of this Salar light-gathering receiving mechanism; The hollow heat pipe of plane flat tube of the luminous energy receiver of each Salar light-gathering receiving mechanism is vertical with the plane of symmetry of the parabolic cylinder reflective mirror of this Salar light-gathering receiving mechanism; The hollow heat pipe of plane flat tube of the luminous energy receiver of each Salar light-gathering receiving mechanism is symmetrically located at the both sides of the plane of symmetry of the parabolic cylinder reflective mirror of this Salar light-gathering receiving mechanism; The focal line of the light entrance slit between the axis of the semi-cylindrical transparent light guide of each Salar light-gathering receiving mechanism lid and two facet mirrors and the parabolic cylinder reflective mirror of this Salar light-gathering receiving mechanism overlaps, and the light entrance slit of the focal line of the parabolic cylinder reflective mirror of each Salar light-gathering receiving mechanism and the big plane mirror of this Salar light-gathering receiving mechanism overlaps, and the plane of symmetry of the parabolic cylinder reflective mirror of each Salar light-gathering receiving mechanism and the big plane mirror of this Salar light-gathering receiving mechanism intersect 45; The big plane mirror and the planar transparent cover plate of each Salar light-gathering receiving mechanism intersect 45
When sunshine during perpendicular to the incident of planar transparent cover plate; Can both pass the light entrance slit of big plane mirror and the light entrance slit between two facet mirrors behind the reflect focalization of big plane mirror and the parabolic cylinder reflective mirror of incident ray through each Salar light-gathering receiving mechanism is radiated on the hollow heat pipe of plane flat tube of each luminous energy receiver; The plane flat tube hollow heat pipe of luminous energy through each luminous energy receiver that is radiated on the hollow heat pipe of plane flat tube of each luminous energy receiver converts heat energy into; Semi-cylindrical transparent light guide lid, the hollow heat pipe of plane flat tube and closed housing of two facet mirrors formations because of each luminous energy receiver; And the light entrance slit that forms between two facet mirrors is very narrow; The light that gets into the light entrance slit repeatedly is radiated on the hollow heat pipe of plane flat tube of each luminous energy receiver through the reflection of two facet mirrors of each luminous energy receiver; The major part of luminous energy changes heat energy in closed housing, therefore significantly improved the photo-thermal conversion ratio of each luminous energy receiver.
CN201010525548XA 2010-10-25 2010-10-25 Solar water heater daylighting by secondary reflective parabolic cylinder light-gathering rectangular flat pipe closed cavity Expired - Fee Related CN101988753B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5465708A (en) * 1993-09-18 1995-11-14 Deutsche Forschungsanstalt Fuer Luft- Und Raumfahrt E.V. Trough-shaped collector
CN2478031Y (en) * 2001-04-16 2002-02-20 盛厚华 Multifunctional energy storage solar generator
CN2913955Y (en) * 2006-06-29 2007-06-20 中国科学技术大学 Heat self-dissipating solar energy accumulation type photovoltaic electricity generating system
CN101551169A (en) * 2009-05-07 2009-10-07 上海交通大学 Cavity type solar energy absorber

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6818818B2 (en) * 2002-08-13 2004-11-16 Esmond T. Goei Concentrating solar energy receiver

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5465708A (en) * 1993-09-18 1995-11-14 Deutsche Forschungsanstalt Fuer Luft- Und Raumfahrt E.V. Trough-shaped collector
CN2478031Y (en) * 2001-04-16 2002-02-20 盛厚华 Multifunctional energy storage solar generator
CN2913955Y (en) * 2006-06-29 2007-06-20 中国科学技术大学 Heat self-dissipating solar energy accumulation type photovoltaic electricity generating system
CN101551169A (en) * 2009-05-07 2009-10-07 上海交通大学 Cavity type solar energy absorber

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