CN201983472U - Solar heat collector equipped with compound parabolic collector concentrator - Google Patents
Solar heat collector equipped with compound parabolic collector concentrator Download PDFInfo
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- CN201983472U CN201983472U CN2011201084307U CN201120108430U CN201983472U CN 201983472 U CN201983472 U CN 201983472U CN 2011201084307 U CN2011201084307 U CN 2011201084307U CN 201120108430 U CN201120108430 U CN 201120108430U CN 201983472 U CN201983472 U CN 201983472U
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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
- Y02E10/44—Heat exchange systems
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Abstract
一种装有复合抛物面聚光器的太阳能集热器，包括真空集热管(6)，其特征在于，所述的真空集热管(6)安装在一复合抛物面聚光器(3)上方的中央，该复合抛物面聚光器(3)由左右对称的两个半体组成，每一半体由渐开线与抛物线圆滑连接组成，两个半体的渐开线一端相互连接构成截面为ω的整体，在其上端口内形成聚光槽(5)；在该真空集热管(6)与复合抛物面聚光器(3)之间留有间距(4)。该复合抛物面聚光器无需跟踪太阳，就能达到提高吸收太阳辐射量，减少热量损失的目的，应用于太阳能集热器，能提高太阳能集热器的热效率，减少热损。
A solar heat collector equipped with a compound parabolic concentrator, comprising a vacuum heat collecting tube (6), characterized in that the vacuum heat collecting tube (6) is installed in the center above a compound parabolic concentrator (3) , the compound parabolic concentrator (3) is composed of two symmetrical halves, each of which is composed of an involute and a parabola connected smoothly, and one end of the involute of the two halves is connected to each other to form a whole with a cross-section of ω , forming a concentrating groove (5) in its upper port; a distance (4) is left between the vacuum heat collecting tube (6) and the compound parabolic concentrator (3). The compound parabolic concentrator does not need to track the sun, and can achieve the purpose of increasing the amount of solar radiation absorbed and reducing heat loss. When applied to a solar heat collector, it can improve the thermal efficiency of the solar heat collector and reduce heat loss.
Description
Technical field
The utility model relates to a kind of solar thermal collector, specifically is a kind of solar thermal collector that compound parabolic concentrator is housed, and utilizes compound parabolic concentrator to increase solar absorption efficient and minimizing thermal loss, belongs to solar energy heat utilization field.
Background technology
Non-tracking focus type reflecting surface is the most typical with the composite parabolic CPC of R.Winston research, it is a kind of non-imaging concentrator according to the design of rim ray principle, this concentrator absorbing surface is a flat board, between two parabolic focus and minimum point, can be with (± θ) incident ray is collected on the receiver by desirable optically focused ratio, and its maximum focusing is compared R in the acceptance angle scope less than half acceptance angle θ
Max=1/sin θ.But because desirable CPC is long usually, in solar thermal utilization, be not easy to use, therefore all will block CPC.
The formed heat collector of conventional vacuum thermal-collecting tube uses the vacuum tube array usually, if arrangement pitches is bigger, its absorption efficiency to sunshine is lower, if arrangement pitches is closeer, then causes the heat collector heat waste bigger.If adopt CPC, then can increase absorption efficiency effectively, reduce heat waste.
A kind of settling mode that Winston proposes is concentrator (the United States Patent (USP) NO.230 that the CPC that blocks and the bluk recombination of W die cavity form, 137), but contact between thermal-collecting tube and the reflecting plate, can cause certain contact conduction heat waste, and W die cavity body is not easy to processing in subsequent process.
Summary of the invention
The purpose of this utility model is to provide a kind of solar thermal collector that compound parabolic concentrator is housed, incident ray in half acceptance angle θ scope can both be absorbed by concentrator, this concentrator can strengthen the collection of energy of vacuum heat collection pipe heat collector, it is low to solve the thermal efficiency that prior art exists, the big and problem that is not easy to process of heat waste.
The technical solution of the utility model is: a kind of solar energy heat collection pipe that compound parabolic concentrator is housed, comprise vacuum heat collection pipe, it is characterized in that, described vacuum heat collection pipe is installed in the central authorities of compound parabolic concentrator top, this compound parabolic concentrator is made up of symmetrical two halfbodies, each halfbody is connected to form by involute and parabola slyness, and involute one end of two halfbodies is interconnected to constitute the integral body that the cross section is ω, forms condenser groove thereon in the port; Between this vacuum heat collection pipe and compound parabolic concentrator, leave spacing.。
Described vacuum heat collection pipe comprises common two cover vacuum heat collection pipes, three bushing type vacuum heat collection pipes, all-glass thermal-pipe type vacuum heat-collecting pipe, glass metal heat pipe and U type tubular type vacuum heat collection pipe.
On described compound parabolic concentrator surface one deck high brightness mirror face reflection coating is arranged.
Many described compound parabolic concentrators of group and condenser groove and thermal-collecting tube parallelism structural are arranged and are connected and composed combining structure.
Be provided with the connection crimp on the both sides of described compound parabolic concentrator, the both sides of adjacent compound parabolic concentrator interconnect by this connection crimp.
The advantage of this practical compound parabolic concentrator is: concentrator can reflex to solar radiation in the half acceptance angle scope on the thermal-collecting tube, therefore need not to follow the tracks of the sun, has saved the complex appts of following the tracks of the sun; Have the line focus ability, sunshine is converged on the vacuum heat collection pipe, have the effect that increases the solar radiation energy-flux density, significantly improve the utilization ratio of vacuum heat collection pipe; Between vacuum heat collection pipe and the CPC certain spacing is arranged, can reduce the contact heat waste.The utility model design science, reasonable in design, be very helpful for the thermal efficiency that improves small-sized solar heat collector and water heater, minimizing heat waste.
Description of drawings
Fig. 1 is a perspective view of the present utility model;
Fig. 2 is a cross section structure schematic diagram of the present utility model;
Fig. 3 is main geometric parameter schematic diagrames more of the present utility model;
Fig. 4 is CPC section of outline figure of the present utility model;
Fig. 5 is the working condition schematic diagram of the utility model less than half acceptance angle;
Fig. 6 is the working condition schematic diagram of the utility model greater than half acceptance angle;
Fig. 7 is the structural representation of the utility model applied in any combination.
The specific embodiment
Below in conjunction with details and the working condition of accompanying drawing detailed description according to the concrete device that the utility model proposes.
Referring to Fig. 1 and Fig. 2, a kind of solar energy heat collection pipe that compound parabolic concentrator is housed of the utility model, comprise vacuum heat collection pipe 6 and compound parabolic concentrator 3, it is characterized in that described vacuum heat collection pipe 6 is installed in the central authorities in the condenser groove 5 of a compound parabolic concentrator 3 tops.This compound parabolic concentrator 3 is made up of symmetrical two halfbodies, and each halfbody is connected to form by involute and parabola slyness, and involute one end of two halfbodies is interconnected to constitute the integral body that the cross section is ω, forms condenser groove 5 thereon in the port.Between this vacuum heat collection pipe 6 and compound parabolic concentrator 3, leave spacing 4.
Described vacuum heat collection pipe 6 comprises common two cover vacuum heat collection pipes, three bushing type vacuum heat collection pipes, all-glass thermal-pipe type vacuum heat-collecting pipe, glass metal heat pipe, U type tubular type vacuum heat collection pipe, and the various vacuum heat collection pipes of other types in the prior art.
One deck high brightness mirror face reflection coating is arranged on the surface of described compound parabolic concentrator 3.
When sunshine with certain angle incident solar radiation to opening the time, a part of solar radiation is directly absorbed by vacuum heat collection pipe 6, a part is absorbed by vacuum heat collection pipe 6 then by compound parabolic concentrator (CPC) 3 reflections.The CPC surface has reflected solar radiation performance preferably, and the absorption tube 2 of vacuum heat collection pipe 6 has good solar absorption performance.Between vacuum heat collection pipe 6 and the compound parabolic concentrator 3 certain spacing 4 is arranged, can avoid the conduction thermal loss between the two.
Referring to Fig. 3 and Fig. 4, the design parameter that mainly influences the utility model performance has: the spacing d between half acceptance angle θ, width w, height h, vacuum heat collection pipe 6 and the CPC etc., the setting of these parameters and design will be considered and optimization according to actual conditions.In incidence angle during less than half acceptance angle θ, the incident solar radiation device that all is reflected reflexes on the vacuum heat collection pipe 6.
The design procedure of sectional view of the present utility model and mapping order are as follows:
The profile of at first true compound parabolic concentrator 3, with the absorption tube 2 of vacuum heat collection pipe basic circle 7 as involute, make the involute section 9 of both sides symmetry, parabolic segment 10 is made in the back of involute section 9 then, this involute section 9 and parabolic segment 10 left-right symmetry, formed the condenser groove 5 that holds vacuum heat collection pipe 6, and vacuum heat collection pipe 6 and this condenser groove 5 are provided with spacing 4 between the two.
1, draw basic circle 7 and cylindrical 8: the size of basic circle 7 is drawn according to the outside dimension of the absorption tube 2 of practical vacuum pipe thermal-arrest 6, cylindrical 8 according to practical vacuum thermal-collecting tube 6 the external diameter of glass outer tube 1 draw.
2, draw involute section 9: the starting point of involute section 9 is chosen in vacuum heat collection pipe 6 center lines has certain negative angle α to begin to draw, the size of angle [alpha] should be able to satisfy involute section 9 when intersecting with vacuum heat collection pipe 6 center vertical lines, and the spacing between intersection point and the cylindrical 8 is d.
3, draw parabolic segment 10: the size of the A/F of parabolic segment 10 and half acceptance angle θ is set according to actual needs.The tie point of parabola and involute can be used Winston CPC model and obtain being connected at involute angle of release β=θ+pi/2 place.CPC A/F and the geometric parameter that highly can use brachymemma CPC calculate, and obtain needed physical dimension.
4, be symmetrically distributed: is line of symmetry with above-mentioned involute section 9 and parabolic segment 10 with vacuum heat collection pipe 6 vertical center lines, makes symmetrical part, thereby forms a complete reflector profile.
According to the machine-shaping of concentrator contour shape, the contour shape of compound parabolic concentrator 3 extends along vacuum heat collection pipe 6 directions then, makes its length and thermal-collecting tube length coupling.This concentrator is by special specular aluminium machine-shaping, and this specular aluminium has bigger reflectivity to solar radiation.
During use, compound parabolic concentrator 3 north-souths tilt to place, and the opening of condenser groove 5 is towards south, and the angle of inclination is substantially equal to local latitude according to the actual conditions adjustment.Need not to follow the tracks of the sun just can with half acceptance angle (± θ) solar radiation in the scope all reflexes on the vacuum heat collection pipe 6.
Fig. 5 and Fig. 6 are the two states of this concentrator work, and Fig. 5 is incident angle φ during less than half acceptance angle θ, and solar radiation all can arrive vacuum heat collection pipe 6.Fig. 6 indication be that a part is reflected to beyond the vacuum heat collection pipe 6 when incident angle during greater than half acceptance angle θ, solar radiation can not all be received.
Shown in Figure 7, be a kind of concentrator compound mode of the utility model.What show among the figure is that 3 CPC 3 combine, and also can be made up by a slice or multi-disc as required, is equipped with one at the edge of combination and connects crimp 12, be convenient to connect between the combination, and with vacuum collector 6 be connected and fixing.
Claims (5)
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201084307U CN201983472U (en) | 2011-04-14 | 2011-04-14 | Solar heat collector equipped with compound parabolic collector concentrator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201084307U CN201983472U (en) | 2011-04-14 | 2011-04-14 | Solar heat collector equipped with compound parabolic collector concentrator |
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| CN201983472U true CN201983472U (en) | 2011-09-21 |
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| CN2011201084307U Expired - Fee Related CN201983472U (en) | 2011-04-14 | 2011-04-14 | Solar heat collector equipped with compound parabolic collector concentrator |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798231A (en) * | 2012-08-14 | 2012-11-28 | 中国华能集团清洁能源技术研究院有限公司 | Novel solar secondary reflecting surface and supporting device thereof |
| CN105241080A (en) * | 2015-10-21 | 2016-01-13 | 中国华能集团清洁能源技术研究院有限公司 | Fresnel type compound paraboloid secondary reflector structure for solar thermal power generation |
| CN105650905A (en) * | 2016-01-25 | 2016-06-08 | 山东中信能源联合装备股份有限公司 | Light condensation heat collector based on composite paraboloid |
| CN106839473A (en) * | 2017-04-01 | 2017-06-13 | 东南大学 | A vacuum heat collecting tube |
| CN108469124A (en) * | 2018-05-03 | 2018-08-31 | 昆明理工大学 | A kind of high-gain solar energy non-imaged compound parabolic light-condensing and heat-collecting device |
| CN108507200A (en) * | 2018-05-03 | 2018-09-07 | 昆明理工大学 | A kind of high-gain solar energy composite plane concentrator |
| CN109612134A (en) * | 2018-11-23 | 2019-04-12 | 江伦 | Compound parabolic solar reflective concentrator and method of making the same |
| CN111271882A (en) * | 2020-02-04 | 2020-06-12 | 华北电力大学 | High-lifetime spectral spectroscopy, concentrating integrated photovoltaic thermal module, system and method |
| CN111306811A (en) * | 2020-02-26 | 2020-06-19 | 东南大学 | An all-glass heat-pipe vacuum collector tube with a CPC concentrator |
| CN114963584A (en) * | 2022-06-20 | 2022-08-30 | 兰州大成科技股份有限公司 | Solar light-gathering heat-collecting device with double-paraboloid reflector and vacuum heat-collecting tube |
| CN116105383A (en) * | 2022-09-05 | 2023-05-12 | 法尔美科技(江苏)有限公司 | A multi-curved surface solar concentrator structure and angle design method |
| CN116538690A (en) * | 2023-04-17 | 2023-08-04 | 昆明理工大学 | A solar semi-transparent concentrating heat-storage integrated window |
-
2011
- 2011-04-14 CN CN2011201084307U patent/CN201983472U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798231A (en) * | 2012-08-14 | 2012-11-28 | 中国华能集团清洁能源技术研究院有限公司 | Novel solar secondary reflecting surface and supporting device thereof |
| CN105241080A (en) * | 2015-10-21 | 2016-01-13 | 中国华能集团清洁能源技术研究院有限公司 | Fresnel type compound paraboloid secondary reflector structure for solar thermal power generation |
| CN105241080B (en) * | 2015-10-21 | 2017-06-27 | 中国华能集团清洁能源技术研究院有限公司 | A compound parabolic secondary reflector structure for Fresnel solar thermal power generation |
| CN105650905A (en) * | 2016-01-25 | 2016-06-08 | 山东中信能源联合装备股份有限公司 | Light condensation heat collector based on composite paraboloid |
| CN106839473A (en) * | 2017-04-01 | 2017-06-13 | 东南大学 | A vacuum heat collecting tube |
| CN108507200A (en) * | 2018-05-03 | 2018-09-07 | 昆明理工大学 | A kind of high-gain solar energy composite plane concentrator |
| CN108469124A (en) * | 2018-05-03 | 2018-08-31 | 昆明理工大学 | A kind of high-gain solar energy non-imaged compound parabolic light-condensing and heat-collecting device |
| CN109612134A (en) * | 2018-11-23 | 2019-04-12 | 江伦 | Compound parabolic solar reflective concentrator and method of making the same |
| CN111271882A (en) * | 2020-02-04 | 2020-06-12 | 华北电力大学 | High-lifetime spectral spectroscopy, concentrating integrated photovoltaic thermal module, system and method |
| CN111306811A (en) * | 2020-02-26 | 2020-06-19 | 东南大学 | An all-glass heat-pipe vacuum collector tube with a CPC concentrator |
| CN114963584A (en) * | 2022-06-20 | 2022-08-30 | 兰州大成科技股份有限公司 | Solar light-gathering heat-collecting device with double-paraboloid reflector and vacuum heat-collecting tube |
| CN116105383A (en) * | 2022-09-05 | 2023-05-12 | 法尔美科技(江苏)有限公司 | A multi-curved surface solar concentrator structure and angle design method |
| CN116538690A (en) * | 2023-04-17 | 2023-08-04 | 昆明理工大学 | A solar semi-transparent concentrating heat-storage integrated window |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20200414 |
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| CF01 | Termination of patent right due to non-payment of annual fee |