CN108317744A - Concentrating vacuum tube and high concentration ratio trough heat collection - Google Patents

Concentrating vacuum tube and high concentration ratio trough heat collection Download PDF

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Publication number
CN108317744A
CN108317744A CN201810320423.XA CN201810320423A CN108317744A CN 108317744 A CN108317744 A CN 108317744A CN 201810320423 A CN201810320423 A CN 201810320423A CN 108317744 A CN108317744 A CN 108317744A
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China
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vacuum tube
reflector
high concentration
thermal
concentration ratio
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CN201810320423.XA
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CN108317744B (en
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陈川
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PowerChina Chengdu Engineering Co Ltd
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PowerChina Chengdu Engineering Co Ltd
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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

Abstract

The invention discloses a kind of concentrating vacuum tube and high concentration ratio trough heat collections, belong to solar energy heat collector field, and it is low that there are focusing ratios solving traditional trough heat collection, and then lead to trough heat collection takes hot temperature low.Concentrating vacuum tube of the present invention, it is contacted to avoid with glass bushing inner wall by the way that curved reflector to be installed on pipe fitting, it avoids causing the destruction to glass bushing since curved reflector temperature rises excessively high during optically focused with this, and then ensure that heat collecting vacuum pipe can effectively bear the irradiation of the light with certain focusing ratio after first optically focused, and secondary reflection aggregation is carried out to it, the final purpose for realizing high concentration ratio.And trough heat collection of the present invention can effectively realize the purpose of high concentration ratio by using concentrating vacuum tube of the present invention, and by successively assembling sunlight by first reflection aggregation and the second secondary reflection;It can be usually reached 300 1000 times of focusing ratio.

Description

Concentrating vacuum tube and high concentration ratio trough heat collection
Technical field
The present invention relates to solar energy heat collector field more particularly to a kind of concentrating vacuum tube for solar energy heating with And high concentration ratio trough heat collection.
Background technology
Currently, ripe solar light-heat power-generation has the collection hot charging of three kinds of slot type, tower and dish-style (disc type) forms It sets, but does not have commercial operation condition because cost is excessively high.Wherein, predominantly slot type, tower two kinds of shapes with development prospect Formula.I.e. slot type, tower two kinds of forms have commercial operation condition possibly through technological break-through.
The advantage of tower heat collector is:Focusing ratio is high, general reachable 200-1000 times of focusing ratio, to take hot temperature Height, it is general up to 700-1200 DEG C, heat can be carried out using the lava hold over system of low cost and efficient generating set etc. It can utilize.But its bottleneck is:Collecting system efficiency is low, and cost is excessively high.
The advantage of traditional trough heat collection is:Collecting system is efficient, at low cost.But its bottleneck is:Focusing ratio It is low, it is typically only capable to reach 20-70 times of focusing ratio, the main reason is that since there are certain scatterings during reflecting condensation Problem, and due to the accuracy of manufacture etc. of slot type reflector itself, cause to can be only formed with one fixed width after single optically focused Light belt, and then cause focusing ratio that can not further increase.And the heat collecting vacuum pipe in traditional trough heat collection can not yet The temperature in the case of high concentration ratio is born, thus the performance of heat collecting vacuum pipe also further limits trough heat collection and improves and gathers Light than technological break-through.Finally, lead to traditional trough heat collection takes hot temperature low, general only 200-400 DEG C, accordingly Its hold over system can be caused of high cost, the problems such as generating set efficiency is low.
Invention content
Present invention solves the technical problem that being:That there are focusing ratios is low for traditional trough heat collection, and then leads to slot type collection The problems such as taking hot temperature low of thermal;It is quasi- that a kind of heat collecting vacuum pipe bearing high concentration ratio is provided and is thus formed High concentration ratio trough heat collection.
The technical solution adopted by the present invention to solve the technical problems is:Concentrating vacuum tube, including glass bushing, thermal-collecting tube And curved reflector, have pipe fitting in the end set of glass bushing, the pipe fitting by the plug at end part of glass bushing, and Vacuum area is formed inside glass bushing;The main part of the thermal-collecting tube is set in glass bushing, the end slave phase of thermal-collecting tube It is pierced by the pipe fitting that should be held;The curved reflector is set in glass bushing, and curved reflector is fixed by its end pacifies On the pipe fitting, the curved reflector is used for light reflection aggregation to the thermal-collecting tube.
It is further:Gap is provided between curved reflector and glass bushing.
It is further:The axis of the thermal-collecting tube is overlapped with the focus line of the curved reflector.
It is further:The outer surface of thermal-collecting tube is provided with the close net knitted body of one layer of heating resisting metal or ceramics heat absorption material Material;The dorsal surface of curved reflector is provided with photovoltaic solar foil layer.
It is further:The both ends of the glass bushing are respectively arranged with pipe fitting, and the both ends end of thermal-collecting tube from It is pierced by the pipe fitting of respective end, the both ends end of curved reflector is respectively and fixedly installed on the pipe fitting of respective end.
It is further:The ratio between the internal diameter of the glass bushing and the outer diameter of the thermal-collecting tube are 20~50 times.
In addition, the present invention also provides a kind of high concentration ratio trough heat collections comprising the optically focused described in aforementioned present invention Vacuum tube, further includes slot type reflector, holder and arc light returning plate, and the arc light returning plate is mounted on the slot type by holder On the collection light path of reflector, the concentrating vacuum tube is mounted on the reflected light path of arc light returning plate.
It is further:The slot type reflector is used to sunlight carrying out first reflection aggregation and obtains aggregation light Line, the arc light returning plate are used to the aggregation light after the aggregation of slot type reflector reflexing to concentrating vacuum tube, and through arc The aggregation light is converted into secondary parallel rays after the reflection of shape light returning plate, the secondary parallel rays is through in concentrating vacuum tube The second secondary reflection of curved reflector assemble to thermal-collecting tube.
It is further:It reach out to respectively in the side of arc light returning plate opening and is provided with photovoltaic solar panel.
It is further:The outwardly extending length L of photovoltaic solar panel is not more than the radius of curvature of arc light returning plate.
It is further:The curvature of arc light returning plate is identical as the curvature of slot type reflector;The reflecting surface of arc light returning plate It is oppositely arranged with the reflecting surface of slot type reflector, and the focus line of the two overlaps.
It is further:Concentrating vacuum tube between arc light returning plate and slot type reflector distance 1/7~1/5 at, And positioned at close to arc light returning plate side.
It is further:The chord length of arc light returning plate is the 1/70-1/30 of the chord length of slot type reflector.
The beneficial effects of the invention are as follows:Concentrating vacuum tube of the present invention is used for having been subjected to just secondary reflection aggregation Sunlight afterwards carries out secondary reflection aggregation, is realized with this and achievees the purpose that high concentration ratio to sunlight, and led in the present invention Cross curved reflector being installed on pipe fitting and be contacted to avoid with glass bushing inner wall, with this avoid during optically focused due to Curved reflector temperature rises excessively high and causes the destruction to glass bushing, and then ensures that heat collecting vacuum pipe can effectively be born through first The irradiation of light with certain focusing ratio after secondary optically focused, and secondary reflection aggregation is carried out to it, final realization high concentration ratio Purpose.In addition, by using trough heat collection of the present invention, by sunlight successively by first reflection aggregation and Second secondary reflection is assembled, and the purpose of high concentration ratio can be effectively realized;It can be usually reached 300-1000 times of focusing ratio;Therefore The hot temperature that takes of heat collector can effectively be improved, and then reduce mating hold over system cost and improve generating set etc. The efficiency of using energy source equipment.In addition, through reasonable settings each parameter size and increase photovoltaic solar panel, photovoltaic solar Energy foil layer etc., can reduce the wasting of resources, reach best collecting efficiency to greatest extent.
Description of the drawings
Fig. 1 is the schematic diagram of concentrating vacuum tube of the present invention;
Fig. 2 is the sectional view along the interfaces A-A in Fig. 1;
Fig. 3 is the stereoscopic schematic diagram of heretofore described high concentration ratio trough heat collection;
Fig. 4 is the side view of heretofore described high concentration ratio trough heat collection;
Fig. 5 is the stereoscopic schematic diagram of arc light returning plate part;
The ray trajectory schematic diagram of high concentration ratio trough heat collection heretofore described Fig. 6;
Fig. 7 is the enlarged diagram of regional area A in Fig. 6;
Fig. 8 is the enlarged diagram of regional area B in Fig. 7;
In figure label for:Concentrating vacuum tube 1, glass bushing 11, thermal-collecting tube 12, curved reflector 13, pipe fitting 14, slot type Reflector 2, holder 3, arc light returning plate 4, sunlight 5, aggregation light 6, secondary parallel rays 7, photovoltaic solar foil layer 8, Photovoltaic solar panel 9, bearing 10.
Specific implementation mode
The present invention is further described with reference to the accompanying drawings and detailed description.Heretofore described high concentration ratio refers to Be in trough heat collection field, for traditional groove type heat collector, groove type heat collector of the present invention it is poly- Light is apparently higher than the effect of traditional groove type heat collector than can reach;Such as natural sunlight, described in this patent The focusing ratio of groove type heat collector may ultimately reach 200-1000 times of focusing ratio, that is, can be regarded as being apparently higher than traditional slot type 20-70 times of focusing ratio of heat collector.
As shown in Fig. 1 to Fig. 8, concentrating vacuum tube of the present invention, including glass bushing 11, thermal-collecting tube 12 and arc Reflector 13 has a pipe fitting 14 in the end set of glass bushing 11, the pipe fitting 14 by the plug at end part of glass bushing 11, And form vacuum area inside glass bushing 11;The main part of the thermal-collecting tube 12 is set in glass bushing 11, thermal-collecting tube 12 end is pierced by from the pipe fitting 14 of respective end;The curved reflector 13 is set in glass bushing 11, curved reflection Plate 13 is fixedly mounted on by its end on the pipe fitting 14, and the curved reflector 13 is used for light reflection aggregation to institute It states on thermal-collecting tube 12.
Wherein, curved reflector 13 is rather than to be set up directly on glass bushing 11 on pipe fitting 14.It is above-mentioned to set The purpose set is since in the case of high concentration ratio, the Wen Sheng of itself of curved reflector 13 will be very high, if directly and glass Casing 11 contacts, and be easy to cause the damage to glass bushing 11, this is also traditional heat collecting vacuum pipe can not be in high concentration ratio item The main reason for being used under part.Simultaneously by being arranged curved reflector 13 in casing, while utilizing vacuum environment in casing The case where, effectively having completely cut off curved reflector 13 influences the temperature of glass bushing 11, and then ensures entire collection thermal vacuum Validity of pipe under the conditions of high concentration ratio.More specifically, after curved reflector 13 is installed, should curved reflector 13 with Enough gaps are provided between glass bushing 11 to contact to avoid curved reflector 13 and 11 inner wall of glass bushing;Such as it is arranged Minimum clearance 3-10mm between the two.
And positioned at the pipe fitting 14 of 11 end of glass bushing, effect mainly has the following:The first, for blocking glass The end of casing 11, to form vacuum environment by vacuumizing in glass bushing 11;The second, for installing and supporting arc The components such as reflector 13 and thermal-collecting tube 12;Third, can also by the way that more glass bushings 11 are connected by its pipe fitting 14, To form whole longer thermal-collecting tube.
In addition, thermal-collecting tube 12 is for receiving the light after the reflection aggregation of curved reflector 13, at work thermal-collecting tube It needs to be passed through corresponding heat-conducting fluid in 12, to realize collection and the utilization of work follow-up equipment to solar energy.More specifically, in order to Light after enabling thermal-collecting tube 12 most effectively to receive the reflection aggregation of curved reflector 13 will collect with reference to shown in attached drawing The axis of heat pipe 12 overlaps setting with the focus line of the curved reflector 13, and the focus line of wherein curved reflector 13 refers to The theoretical focal point of the reflection aggregation light of curved reflector 13 is formed by path line.Certainly, without loss of generality, heretofore described Curved reflector 13, the purpose is to be used for light-ray condensing to thermal-collecting tube 12, and in solar groove type acquisition means, usually Use the cross section of reflecting surface for the groove-like structure of arc;In addition, those skilled in the art can use corresponding song as needed The curved reflector 13 of rate is to meet the requirement assembled to respective ray of light.
More specifically, since the evacuated collector tube in the present invention is to be used for high concentration ratio, thermal-collecting tube 12 is in reality It needs to bear higher temperature in the course of work, generally can reach 700-1200 DEG C, even higher temperature.Therefore in the present invention Can thermal-collecting tube 12 be specifically made using metal pipe material, and require it with certain high temperature resistance.In addition, for glass bushing 11, then transparent glass tube is used, end can according to circumstances be provided with the structure coordinated with corresponding pipe fitting 14.
In addition, in order to further increase assimilation effect of the thermal-collecting tube 12 to solar energy, can further be arranged in its outer surface There are the close net knitted body of one layer of heating resisting metal or ceramic heat-absorbing material;Wherein, the close net knitted body of heating resisting metal or ceramic heat-absorbing material It refers to the respective material or structure that are used on the absorber of tower heat collector at present, is to apply it in this patent On evacuated collector tube.In addition, since the concentrating vacuum tube 1 in the present invention is in actual use generally for having reflected aggregation Light after upstream device to sunlight for the first time assemble.Such as the high concentration ratio slot type thermal-arrest with reference to shown in attached drawing 6 It is anti-by slot type reflector 2 to can be seen that the back side of curved reflector 13 can block a part when specific installation site relationship in device The light of aggregation is penetrated, therefore can the dorsal surface of curved reflector 13 further be provided with photovoltaic solar foil layer in the present invention 8;Absorption to the solar energy of the corresponding portion and utilization are realized by this layer of foil layer 8.
In the specific example with reference to shown in attached drawing 1, heretofore described concentrating vacuum tube 1, glass bushing 11 is two The tubular structure of Duan Tongkong, both ends are respectively arranged with pipe fitting 14, at this point, the both ends end of thermal-collecting tube 12 can be from respective end It is pierced by pipe fitting 14, and one end of thermal-collecting tube 12, as heat-conducting fluid entrance, the other end is then used as heat-conducting fluid to export;Arc And the both ends end of curved reflector 13 is respectively and fixedly installed on the pipe fitting 14 of respective end;It in this way can be to curved reflector 13 play more efficiently fixed support effect.
In addition, without loss of generality for the length of single concentrating vacuum tube 1 in the present invention, it is theoretically restricted, It can be configured according to actual conditions, as long as can ensure that effective support to thermal-collecting tube 12 and curved reflector 13;For example, The length of single concentrating vacuum tube 1 can be set in 2m or so.
More specifically, in conjunction with curved reflector 13 to the reflection congregational rate of light, theoretically to curved reflector 13 The ratio requirement of focusing ratio is bigger, also higher to the accuracy of manufacture of curved reflector 13 accordingly.And consider light itself The case where scattering, be preferably provided in the present invention the ratio between the internal diameter of the glass bushing 11 and the outer diameter of the thermal-collecting tube 12 for 20~ 50 times;Such as it can specifically use following setting:11 internal diameter of glass bushing is 90mm, length 2m;12 outer diameter of thermal-collecting tube is 2.5mm; The chord length of curved reflector 13 is 70mm;Its theoretical focusing ratio is about 28 or so after being arranged in this way.
In addition, it should be noted that the concentrating vacuum tube 1 in the present invention is mainly used for second aggregation sunlight Situation, therefore its final acquisition focusing ratio would be about the product of focusing ratio twice, and it is poly- that 200-1000 times of height is reached with this The case where light ratio.Certainly, without loss of generality, can also have before concentrating vacuum tube twice or multiple focusing light effect.
In addition, the high concentration ratio trough heat collection formed by using above-mentioned concentrating vacuum tube 1 in the present invention, also Including slot type reflector 2, holder 3 and arc light returning plate 4, the arc light returning plate 4 by holder 3 be mounted on the slot type it is reflective On the collection light path of plate 2, the concentrating vacuum tube 1 is mounted on the reflected light path of arc light returning plate 4.
Above-mentioned high concentration ratio trough heat collection can refer in opticpath in actual work shown in attached drawing 6-8, slot Formula reflector 2 is used to sunlight 5 carrying out first reflection aggregation and obtains aggregation light 6, and then arc light returning plate 4 will be through slot Aggregation light 6 after formula reflector 2 is assembled reflexes to heretofore described concentrating vacuum tube 1, then right by concentrating vacuum tube 1 Assemble light 6 and carry out the second secondary reflection aggregation, eventually by the requirement for reaching high concentration ratio after assembling twice.More specifically, arc The aggregation light 6 further can be converted to secondary parallel rays 7 by shape light returning plate 4 after reflecting, and then secondary parallel rays 7 is again Assemble to thermal-collecting tube 12 through 13 second secondary reflection of curved reflector in concentrating vacuum tube 1.
In addition, without loss of generality, heretofore described slot type reflector 2, in traditional trough heat collection Slot type reflector 2 be identical structure and can, usually entire slot type reflector 2 can have been installed by corresponding bearing 10.
Furthermore, it is contemplated that during slot type reflector 2 carries out first reflection aggregation, there are certain scattering feelings Condition, forming a light belt rather than theoretical focal point line after aggregation, (this, which is also traditional trough heat collection, can not improve focusing ratio The main reason for);Simultaneously because the presence of scattering process, aggregation light can not be converted to by arc light returning plate 4 completely Concentrating vacuum tube 1 is projected to after secondary parallel rays 7, for this purpose, further in the side that arc light returning plate 4 is open point in the present invention It does not reach out to and is provided with photovoltaic solar panel 9, as shown in attached drawing 5 and attached drawing 7.Above-mentioned photovoltaic solar can be passed through in this way Plate 9 is absorbed and is utilized to the part solar energy, to improve whole energy utilization rate.Certainly, without loss of generality, the light The radius of curvature of arc light returning plate 4 should be not more than by lying prostrate 9 outwardly extending length L of solar panels;To avoid to through slot type reflector 2 Aggregation light 6 after aggregation causes larger block.
More specifically, the curvature of the curvature and slot type reflector 2 of arc light returning plate 4 is further preferably set in the present invention It is identical;The reflecting surface of arc light returning plate 4 and the reflecting surface of slot type reflector 2 are oppositely arranged simultaneously, as shown in attached drawing China, together When specific location relationship is arranged by the focus line of the two overlap be arranged.At this point, the theory locus line of sunray 5 will be as attached It is moved towards shown in Fig. 6-8:Assembled by first reflection through slot type reflector 2, is then converted after the reflection of arc light returning plate 4 For secondary parallel rays 7, assemble later to thermal-collecting tube using through 13 second secondary reflection of curved reflector in concentrating vacuum tube 1 On 12;The purpose to the high concentration ratio of sunray is realized with this.
In addition, the spacing that concentrating vacuum tube 1 is located at arc light returning plate 4 and slot type reflector 2 is further arranged in the present invention From 1/7~1/5 at, and positioned at close to 4 side of arc light returning plate.The reason of being arranged in this way is, when concentrating vacuum tube 1 is set as , will be bigger to aggregation 6 masking ratio of light when closer to arc 4 side of light returning plate, and closer to 2 side of slot type reflector When, then from arc light returning plate 4 reflection after 7 scattering process of secondary parallel rays will be bigger, caused by the sun loss of energy can also get over Greatly;Therefore, by the setting of above-mentioned size, the utilization ratio to solar energy can be improved to a greater extent.
More specifically, in order to control the focusing ratio of whole more device entirety, arc light returning plate 4 can be generally set in the present invention Chord length is the 1/70-1/30 of the chord length of slot type reflector 2;That is optically focused of the setting slot type reflector 2 after first reflection optically focused Than substantially 30-70 times;For example, the chord length 2600mm of setting slot type reflector 2, the chord length of curved reflector 13 is 70mm.

Claims (13)

1. concentrating vacuum tube, it is characterised in that:Including glass bushing (11), thermal-collecting tube (12) and curved reflector (13), in glass The end set of glass casing (11) has pipe fitting (14), the pipe fitting (14) by the plug at end part of glass bushing (11), and Vacuum area is formed inside glass bushing (11);The main part of the thermal-collecting tube (12) is set in glass bushing (11), thermal-arrest The end of pipe (12) is pierced by the pipe fitting (14) of respective end;The curved reflector (13) is set to glass bushing (11) Interior, curved reflector (13) is fixedly mounted on by its end on the pipe fitting (14), and the curved reflector (13) is used for It will be in light reflection aggregation to the thermal-collecting tube (12).
2. concentrating vacuum tube as described in claim 1, it is characterised in that:Curved reflector (13) and glass bushing (11) it Between be provided with gap.
3. concentrating vacuum tube as described in claim 1, it is characterised in that:The axis and the arc of the thermal-collecting tube (12) are anti- The focus line of tabula rasa (13) overlaps.
4. concentrating vacuum tube as described in claim 1, it is characterised in that:The outer surface of thermal-collecting tube (12) be provided with one layer it is resistance to The close net knitted body of thermometal or ceramic heat-absorbing material;The dorsal surface of curved reflector (13) is provided with photovoltaic solar foil layer (8)。
5. concentrating vacuum tube as described in claim 1, it is characterised in that:The both ends of the glass bushing (11) are respectively arranged with Pipe fitting (14), and the both ends end of thermal-collecting tube (12) is pierced by the pipe fitting (14) of respective end, curved reflector (13) Both ends end be respectively and fixedly installed on the pipe fitting (14) of respective end.
6. the concentrating vacuum tube as described in any one of claim 1 to 5, it is characterised in that:The glass bushing (11) The ratio between internal diameter and the outer diameter of the thermal-collecting tube (12) are 20~50 times.
7. high concentration ratio trough heat collection, it is characterised in that:The optically focused described in any one of 1-6 is removed including aforesaid right Vacuum tube (1), further includes slot type reflector (2), holder (3) and arc light returning plate (4), and the arc light returning plate (4) passes through branch Frame (3) is mounted on the collection light path of the slot type reflector (2), and the concentrating vacuum tube (1) is mounted on arc light returning plate (4) Reflected light path on.
8. high concentration ratio trough heat collection as claimed in claim 7, it is characterised in that:The slot type reflector (2) is used for Sunlight (5) is subjected to first reflection aggregation and obtains aggregation light (6), the arc light returning plate (4) is used for will be through slot type Aggregation light (6) after reflector (2) aggregation reflexes to concentrating vacuum tube (1), and by institute after arc light returning plate (4) reflection It states aggregation light (6) and is converted to secondary parallel rays (7), the secondary parallel rays (7) is through the arc in concentrating vacuum tube (1) (13) second secondary reflection of reflector is assembled to thermal-collecting tube (12).
9. high concentration ratio trough heat collection as claimed in claim 8, it is characterised in that:It is open in arc light returning plate (4) Side reach out to respectively is provided with photovoltaic solar panel (9).
10. high concentration ratio trough heat collection as claimed in claim 9, it is characterised in that:The photovoltaic solar panel (9) to The length L of outer extension is not more than the radius of curvature of arc light returning plate (4).
11. high concentration ratio trough heat collection as claimed in claim 8, it is characterised in that:The curvature of arc light returning plate (4) with The curvature of slot type reflector (2) is identical;The reflecting surface of arc light returning plate (4) and the reflecting surface of slot type reflector (2) are oppositely arranged, And the focus line of the two overlaps.
12. high concentration ratio trough heat collection as claimed in claim 11, it is characterised in that:Concentrating vacuum tube (1) is located at arc Between shape light returning plate (4) and slot type reflector (2) at the 1/7~1/5 of distance, and positioned at close to arc light returning plate (4) side.
13. the high concentration ratio trough heat collection as described in any one of claim 7 to 11, it is characterised in that:Arc returns The chord length of tabula rasa (4) is the 1/70-1/30 of the chord length of slot type reflector (2).
CN201810320423.XA 2018-04-11 2018-04-11 Light-gathering vacuum tube and high-light-gathering-ratio groove type heat collection device Active CN108317744B (en)

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CN108317744B CN108317744B (en) 2023-08-08

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201811461U (en) * 2010-02-26 2011-04-27 华南农业大学 High-efficiency heat pipe type internal light-focusing solar vacuum heat-collecting pipe
CN102434989A (en) * 2011-12-28 2012-05-02 刘振中 Grooved light-gathering solar through heat collecting vacuum pipe connector
CN205079478U (en) * 2015-10-20 2016-03-09 中国科学技术大学 Slot type solar energy spotlight solar collecting system
CN208253976U (en) * 2018-04-11 2018-12-18 中国电建集团成都勘测设计研究院有限公司 Concentrating vacuum tube and high concentration ratio trough heat collection

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201811461U (en) * 2010-02-26 2011-04-27 华南农业大学 High-efficiency heat pipe type internal light-focusing solar vacuum heat-collecting pipe
CN102434989A (en) * 2011-12-28 2012-05-02 刘振中 Grooved light-gathering solar through heat collecting vacuum pipe connector
CN205079478U (en) * 2015-10-20 2016-03-09 中国科学技术大学 Slot type solar energy spotlight solar collecting system
CN208253976U (en) * 2018-04-11 2018-12-18 中国电建集团成都勘测设计研究院有限公司 Concentrating vacuum tube and high concentration ratio trough heat collection

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