CN205026961U - A heat absorber for line gathers solar -thermal power generation - Google Patents
A heat absorber for line gathers solar -thermal power generation Download PDFInfo
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- CN205026961U CN205026961U CN201520509794.4U CN201520509794U CN205026961U CN 205026961 U CN205026961 U CN 205026961U CN 201520509794 U CN201520509794 U CN 201520509794U CN 205026961 U CN205026961 U CN 205026961U
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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
A heat absorber for line gathers solar -thermal power generation, including secondary reflecting mirror and vacuum or non - evacuated collector tube, evacuated collector tube is rectangle eccentric mounting in rectangle evacuated collector tube's glass outer tube, say with rectangle evacuated collector tube that the terminal rectangle pipeline of main part is transformed into circular pipeline, takes out vacuum treatment with space between the two simultaneously through the reducer union, non - evacuated collector tube perhaps is the two root circles shape thermal -collecting tube of antivacuum chain intermittent weld for rectangular set heat pipe way, the thermal -collecting tube of 8 fonts perhaps for the shape, non - evacuated collector tube's center and secondary reflecting mirror equipment distance are less than the half the of thermal -collecting tube width, secondary reflecting mirror opening part installation windshield, in using, penetrate the surface that rectangle evacuated collector tube 4 or non - evacuated collector tube 5 thermal -collecting tube can both be shone in radiation in the secondary reflecting mirror, the optics loss has been reduced, improve 10 -20% on the basis of present heat collector efficiency.
Description
Technical field
The present invention relates to solar energy thermal-power-generating technology, the special standby heat dump for line condensing thermal power generation relating to a kind of extra-high heat absorption efficiency.
Background technology
The energy resources reserves of China allow of no optimist, and per capita resources is not enriched.Many places, lack conventional energy resource resource, but solar energy resources enriches.For improving solar energy thermal-power-generating efficiency, adopting on the one hand and improving solar thermal collection system outlet medium temperature, thus improving the method for the thermoelectric conversion efficiency of whole system; The performance of each assembly of another aspect raising solar energy thermal-power-generating, parts and thermal transition efficiency.Heat dump is one of critical component in solar heat power generation system, the primary study measure that improves its efficiency should could improve the utilization ratio of heat on the whole.Line Photospot solar heat dump relates to multi-disciplinary high-tech product, is subject to the restriction of domestic technique development level and present situation.
Line optically focused heat dump structure common at present comprises the structure of secondary reflection mirror and vacuum heat collection pipe, also have adopt secondary reflection mirror, structure that antivacuum thermal-collecting tube covers windshield again.General secondary reflection mirror adopts CPC curvilinear plane shape, this structural requirement adopts tubulose thermal-collecting tube and wall and CPC will be close to, otherwise have incident light and cannot focus on thermal-collecting tube, reduce collecting efficiency, this just means that employing conventional vacuum thermal-collecting tube necessarily exists loss in efficiency.If adopt antivacuum thermal-collecting tube, be equipped with high requirement then to thermal-collecting tube and secondary reflection mirror, consider that secondary reflection mirror has certain collision under high radiation irradiation, thermal-collecting tube and secondary reflection mirror wall will leave safety clearance, also optically focused can be brought to lose, affect collecting efficiency.If Fig. 1 is existing line concentrating collector structure, current line concentrating collector comprises the secondary reflection mirror 1 of CPC shape, conventional vacuum thermal-collecting tube 2, or comprises the secondary reflection mirror 1 of CPC shape, circular antivacuum thermal-collecting tube 3 and windshield 6.All leave gap due to conventional vacuum thermal-collecting tube 2 or between circular antivacuum thermal-collecting tube 3 and the secondary reflection mirror 1 of CPC shape, the radiation be irradiated on secondary reflection mirror cannot all reflex on thermal-collecting tube, thus produces optical loss.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the object of the present invention is to provide a kind of heat dump for line condensing thermal power generation, on the basis of multiple row primary event mirror optically focused, further employing secondary reflection mirror, incident light is concentrated further, improve the focusing ratio of heat collecting field, by thermal-arrest dielectric heating to the temperature more arrived.
In order to achieve the above object, technical scheme of the present invention is:
For the heat dump of line condensing thermal power generation, comprise secondary reflection mirror 1 and the rectangular vacuum thermal-collecting tube 4 of CPC shape, rectangular vacuum thermal-collecting tube 4 is made up of rectangular set hot channel 41 and outer glass tube 42, rectangular set hot channel 41 is eccentric in outer glass tube 42 to be installed, when rectangular vacuum thermal-collecting tube 4 assembles with the secondary reflection mirror 1 of CPC shape, rectangular set hot channel 41 and secondary reflection mirror 1 phase are near until distance is between the two less than the half of rectangular set hot channel 41 width, keep a safe distance between outer glass tube 42 and secondary reflection mirror 1 and rectangular set hot channel 41 simultaneously and guarantee that outer glass tube 42 is not broken.
The rectangular set hot channel main body 411 of described rectangular set hot channel 41 is sealed by the mode of sealing by fusing or press seal with outer glass tube 42 by two reducer unions 412 and sealing-in joint 413, is vacuum between rectangular set hot channel 41 and outer glass tube 42.
Described rectangular set hot channel 41 outer surface is coated with coating for selective absorption.
Described rectangular set hot channel 41 inwall is processed with fin 414, arranges by straight line or shape of threads.
For the heat dump of line condensing thermal power generation, comprise secondary reflection mirror 1 and the antivacuum thermal-collecting tube 5 of CPC shape, antivacuum thermal-collecting tube 5 is rectangular set hot channel 51, or be two circular thermal-collecting tubes 52 of antivacuum chain intermittent weld, or be the thermal-collecting tube 53,54 that shape is 8-shaped, the half that distance is less than thermal-collecting tube width assembled by the center of antivacuum thermal-collecting tube 5 and secondary reflection mirror 1, and secondary reflection mirror 1 opening part installs windshield 6.
Described antivacuum thermal-collecting tube (5) outer surface is coated with coating for selective absorption.
Two kinds of heat dump structures of the present invention, can ensure that the radiation incided in secondary reflection mirror can both be irradiated to the surface of thermal-collecting tube, decrease optical loss, 10-20% is improved on the basis of existing collector efficiency.
Accompanying drawing explanation
Fig. 1 is existing line concentrating collector structure, and wherein Figure 1A is a kind of structure of form, and Figure 1B is the structure of another kind of form.
Fig. 2 is the heat dump structure of employing rectangular vacuum thermal-collecting tube according to a first embodiment of the present invention.
The rectangular vacuum thermal-collecting tube structure of Fig. 3 for adopting in heat dump according to a first embodiment of the present invention.
Fig. 4 is the fin structure of rectangular tube inside.
Fig. 5 is the heat dump structure adopting antivacuum thermal-collecting tube according to a second embodiment of the present invention, wherein Fig. 5 A is antivacuum thermal-collecting tube is the antivacuum heat collecting pipeline of rectangle, two circular thermal-collecting tubes of Fig. 5 B to be antivacuum thermal-collecting tube be antivacuum chain intermittent weld, Fig. 5 C, Fig. 5 D are the antivacuum thermal-collecting tube of the 8-shaped that arc-shaped transition is different.
Wherein in each figure, Reference numeral is as follows:
1-secondary reflection mirror, 2-conventional vacuum thermal-collecting tube, the circular pipe of 21-vacuum heat collection pipe, the outer glass tube of 22-vacuum heat collection pipe, the circular antivacuum thermal-collecting tube of 3-, 4-rectangular vacuum thermal-collecting tube, 41-rectangular vacuum heat collecting pipeline, the outer glass tube of 42-rectangular vacuum thermal-collecting tube, 411-rectangular vacuum heat collecting pipeline main body, 412-reducer union, 413-sealing-in joint, 414-fin, the antivacuum heat collecting pipeline of 51-rectangle, two circular thermal-collecting tubes of the antivacuum chain intermittent weld of 52-, 53,54-two kinds close to the antivacuum thermal-collecting tube of 8-shaped, 6-windshield.
Detailed description of the invention
Below in conjunction with accompanying drawing, the claimed heat dump structure for line condensing thermal power generation of the present invention is described in detail.
With reference to Fig. 2, for the heat dump of line condensing thermal power generation, comprise secondary reflection mirror 1 and the rectangular vacuum thermal-collecting tube 4 of CPC shape, rectangular vacuum thermal-collecting tube 4 is made up of rectangular set hot channel 41 and outer glass tube 42, rectangular set hot channel 41 is eccentric in outer glass tube 42 to be installed, when rectangular vacuum thermal-collecting tube 4 assembles with the secondary reflection mirror 1 of CPC shape, rectangular set hot channel 41 and secondary reflection mirror 1 phase are near until distance is between the two less than the half of rectangular set hot channel 41 width, keep a safe distance between outer glass tube 42 and secondary reflection mirror 1 and rectangular set hot channel 41 simultaneously and guarantee that outer glass tube 42 is not broken.
Ginseng looks for Fig. 3, the rectangular set hot channel main body 411 of described rectangular set hot channel 41 is sealed by the mode of sealing by fusing or press seal with outer glass tube 42 by two reducer unions 412 and sealing-in joint 413, it is vacuum between rectangular set hot channel 41 and outer glass tube 42, vacuumize process, the vacuum heat collection pipe of formation;
Described rectangular set hot channel 41 outer surface is coated with coating for selective absorption, strengthens radiation-absorbing and reduces radiation loss.
With reference to Fig. 4, described rectangular set hot channel 41 inwall is processed with fin 414, arranges by straight line or shape of threads, the rigidity improving pipeline strengthens the heat exchange of thermal-arrest medium and tube wall simultaneously, improves heat-transfer effect.
With reference to Fig. 5, for the heat dump of line condensing thermal power generation, comprise secondary reflection mirror 1 and the antivacuum thermal-collecting tube 5 of CPC shape, antivacuum thermal-collecting tube 5 is rectangular set hot channel 51, or be two circular thermal-collecting tubes 52 of antivacuum chain intermittent weld, or for shape be the thermal-collecting tube 53,54 of 8-shaped.The half that distance is less than thermal-collecting tube width assembled by the center of antivacuum thermal-collecting tube 5 and secondary reflection mirror 1, and secondary reflection mirror 1 opening part installs windshield 6, reduces the convection losses of thermal-collecting tube and environment.Described antivacuum thermal-collecting tube (5) outer surface is coated with coating for selective absorption, strengthens radiation-absorbing and reduces radiation loss.Antivacuum thermal-collecting tube 53 cuts away part circular thermal-collecting tube by two and is directly welded, and antivacuum thermal-collecting tube 54 is compared with 53, and the welding portion between two thermal-collecting tubes adds arc-shaped transition.Antivacuum thermal-collecting tube 53 and 54 also can adopt the mode of extrusion molding to process.
Operation principle of the present invention is: during use, and the radiation be mapped in secondary reflection mirror 1 can both be irradiated to the surface of rectangular vacuum thermal-collecting tube 4 or antivacuum thermal-collecting tube 5 thermal-collecting tube, decreases optical loss, and 10-20% is improved on the basis of existing collector efficiency.
Rectangular set hot channel 41 outer surface of rectangular vacuum thermal-collecting tube 4 is coated with coating for selective absorption, strengthens radiation-absorbing and reduces radiation loss; Described rectangular set hot channel 41 inwall is processed with fin 414, and the rigidity improving pipeline strengthens the heat exchange of thermal-arrest medium and tube wall simultaneously, improves heat-transfer effect.
In vacuum heat collection pipe 5 with secondary reflection mirror 1 assembling process, the center of vacuum heat collection pipe 5 is mutually close with secondary reflection mirror 1, until be less than the half of vacuum heat collection pipe 5 width, the windshield that secondary reflection mirror 1 opening part is installed, reduces the convection losses of thermal-collecting tube and environment.
The above; be only a part of detailed description of the invention of the present invention, protection scope of the present invention is not limited thereto, and is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (6)
1. for the heat dump of line condensing thermal power generation, it is characterized in that, comprise secondary reflection mirror (1) and the rectangular vacuum thermal-collecting tube (4) of CPC shape, rectangular vacuum thermal-collecting tube (4) is made up of rectangular set hot channel (41) and outer glass tube (42), rectangular set hot channel (41) is eccentric in outer glass tube (42) to be installed, when rectangular vacuum thermal-collecting tube (4) assembles with the secondary reflection mirror (1) of CPC shape, rectangular set hot channel (41) and secondary reflection mirror (1) are mutually near until distance is between the two less than the half of rectangular set hot channel 41 width, keep a safe distance between outer glass tube (42) and secondary reflection mirror (1) and rectangular set hot channel (41) simultaneously and guarantee that outer glass tube (42) is not broken.
2. the heat dump for line condensing thermal power generation according to claim 1, it is characterized in that, the rectangular set hot channel main body (411) of described rectangular set hot channel (41) is sealed by the mode of sealing by fusing or press seal with outer glass tube (42) by two reducer unions (412) and sealing-in joint (413), is vacuum between rectangular set hot channel (41) and outer glass tube (42).
3. the heat dump for line condensing thermal power generation according to claim 1, is characterized in that, described rectangular set hot channel (41) outer surface is coated with coating for selective absorption.
4. the heat dump for line condensing thermal power generation according to claim 1, is characterized in that, described rectangular set hot channel (41) inwall is processed with fin (414), arranges by straight line or shape of threads.
5. for the heat dump of line condensing thermal power generation, it is characterized in that, comprise secondary reflection mirror (1) and the antivacuum thermal-collecting tube (5) of CPC shape, antivacuum thermal-collecting tube (5) is rectangular set hot channel (51), or be two circular thermal-collecting tubes (52) of antivacuum chain intermittent weld, or be the thermal-collecting tube (53,54) that shape is 8-shaped, the half that distance is less than thermal-collecting tube width assembled by the center of antivacuum thermal-collecting tube (5) and secondary reflection mirror (1), and secondary reflection mirror (1) opening part installs windshield (6).
6. the heat dump for line condensing thermal power generation according to claim 5, is characterized in that, described antivacuum thermal-collecting tube (5) outer surface is coated with coating for selective absorption.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509794.4U CN205026961U (en) | 2015-07-14 | 2015-07-14 | A heat absorber for line gathers solar -thermal power generation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520509794.4U CN205026961U (en) | 2015-07-14 | 2015-07-14 | A heat absorber for line gathers solar -thermal power generation |
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| CN205026961U true CN205026961U (en) | 2016-02-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964464A (en) * | 2015-07-14 | 2015-10-07 | 中国华能集团清洁能源技术研究院有限公司 | Heat absorber for line-focus heat power generation |
| CN106766275A (en) * | 2016-12-06 | 2017-05-31 | 中国科学技术大学 | A kind of groove type solar high-temperature vacuum heat-collecting tube |
-
2015
- 2015-07-14 CN CN201520509794.4U patent/CN205026961U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964464A (en) * | 2015-07-14 | 2015-10-07 | 中国华能集团清洁能源技术研究院有限公司 | Heat absorber for line-focus heat power generation |
| CN106766275A (en) * | 2016-12-06 | 2017-05-31 | 中国科学技术大学 | A kind of groove type solar high-temperature vacuum heat-collecting tube |
| CN106766275B (en) * | 2016-12-06 | 2019-01-04 | 中国科学技术大学 | A kind of groove type solar high-temperature vacuum heat-collecting tube |
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