CN205191941U - Cavity absorber based on linear fei nieer solar collector - Google Patents
Cavity absorber based on linear fei nieer solar collector Download PDFInfo
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- CN205191941U CN205191941U CN201520820616.3U CN201520820616U CN205191941U CN 205191941 U CN205191941 U CN 205191941U CN 201520820616 U CN201520820616 U CN 201520820616U CN 205191941 U CN205191941 U CN 205191941U
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- cavity
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- tube
- endothermic
- inwall
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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
Abstract
The utility model discloses a cavity absorber based on linear fei nieer solar collector, cavity in casing, casing, the heat absorption pipe that is located the cavity and the glass of cap seal cavity lap, the casing is semi - cylindrical, and the casing includes shell and inner wall, and it has the heat preservation to fill between shell and the inner wall, the cavity be semi -cylindrical, heat absorption pipe be many more than two, many heat absorption pipes all attached on the inner wall, many endothermic pipes are the straight tube of following the cavity axial and setting up, and many heat absorptions are managed the constitution of establishing ties mutually in proper order and are curved circuitous book shape heat exchanger tube bundles, this heat exchanger tube bundles and inner wall constitution pipe wing formula heat transfer structure. The pipe wing formula heat transfer structure that this cavity absorber adopted semi -cylindrical cavity and heat exchanger tube bundles and inner wall to constitute can let the solar radiation heat distribution after focusing on even, prevents absorber local overheat to absorptive heat can be absorbed by the working medium that flows effectively.
Description
Technical field
The utility model relates to solar thermal utilization equipment, specifically refers to a kind of cavity absorber based on linear fresnel solar heat collector.
Background technology
Solar thermal collector is device solar energy being converted to heat energy, is the core component of solar thermal utilization, concrete point focusing solar collector and non-focusing type heat collector.
Focusing solar collector by solar radiation low for energy-flux density, can be converged to the radiant heat flux of high fluence density, is generally used for temperature, high temperature in solar energy and utilizes field.Linear Fresnel heat collector is the minute surface utilizing series of discrete, light focusing is become a focal line, focal line position is generally cavity type absorber or vacuum tube absorber, is connected with flow working medium in absorber, after solar radiation heating after being focused, be transported to heating equipment.The performance of absorber determines the height of solar thermal collector photothermal conversion efficiency, and therefore the design of absorber is most important to solar thermal utilization.
Cavity absorber is generally used for linear Fresnel heat collector, and it is fixed on the top of thermal collector mirror field, is generally made up of shell, heat-insulation layer, internal cavity and endothermic tube.Shell plays a part to support and protection, and heat-insulation layer effectively can stop scattering and disappearing of chamber intimate heat, and cavity has been then the effect of drawing radiations heat energy in, and endothermic tube depends on inwall, and the flow working medium in pipe is generally conduction oil or water.
Cavity absorber is various informative, is mainly reflected in the shape of cavity and the form of endothermic tube and quantity.Inwall and endothermic tube unite two into one, and are orifice-plate type absorber; When endothermic tube is tightly distributed in inwall, it is bundled tube absorber; Endothermic tube is scattered when being distributed in inwall, is tube-sheet type absorber.Orifice-plate type absorber structure is the simplest, and working medium runner is generally square tube chamber, and cavity endotherm area is less, and fluid interchange effect is general, and bearing capacity is little; Bundled tube absorber endothermic tube quantity is many, and endotherm area is large, and endothermic effect is good; Tube-sheet type absorber, performance is between orifice-plate type and inculcate formula absorber, and structure is relatively simple, and because used tubing is less, thus cost is relatively low.
The advantage of cavity absorber: structure is simple, compared with vacuum tube absorber, cavity absorber is without the need to vacuumizing, and avoid glass tube and cause sealing the problems such as difficulty because heat shrinkability is different from metal tube, and technique is simple, production and processing is easy, and cost is lower.Absorber position is fixed, and does not have movable part, is convenient to operation and maintenance.
Utility model content
The purpose of this utility model is to provide a kind of cavity absorber based on linear fresnel solar heat collector, the tube fin type heat exchange structure that this cavity absorber adopts semi-cylindrical cavity and heat-exchanging tube bundle and inwall to form, the solar radiation heat after focusing on can be allowed to be evenly distributed, prevent absorber hot-spot, and the heat absorbed can be absorbed effectively by the working medium flowed.
Above-mentioned purpose of the present utility model realizes by following technical solution: a kind of cavity absorber based on linear fresnel solar heat collector, comprise housing, cavity in housing, be positioned at the endothermic tube of cavity and the glass cover-plate of cap seal cavity, it is characterized in that: described housing is semi-cylindrical shaped, housing comprises shell and inwall, heat-insulation layer is filled with between shell and inwall, described cavity is semi-cylindrical, described endothermic tube is many of more than two, many endothermic tubes are all attached on described inwall, many endothermic tubes are the straight tube axially arranged along cavity, many endothermic tubes are in series successively to form and curve roundabout folding shape heat-exchanging tube bundle, this heat-exchanging tube bundle and inwall form tube fin type heat exchange structure.
In the utility model, described endothermic tube is five, and adjacent endothermic tube is connected by semicircular bridge piece at the place of curving, and the endothermic tube being positioned at endothermic tube beam port place is also connected with the fluid interface pipe of S shape.
In the utility model, described endothermic tube is seamless steel pipe, and endothermic tube surface is coated with one deck copper oxide coating.Because of the directly generating steam of possibility in endothermic tube pipe, pressure is larger; Surface scribbles black selective coating, i.e. copper oxide coating, can reduce reflectivity and the emissivity on endothermic tube surface.
In the utility model, the material of described inwall is aluminium, and inner wall surface is coated with one deck copper oxide coating.The aluminium that inwall adopts heat conductivility excellent, surface also scribbles black coating, such as cupric oxide, fits tightly with endothermic tube, forms fin-tube type heat-absorbing structure.The radiations heat energy arriving inwall is absorbed by inwall, conducts to endothermic tube.
In the utility model, the material of described shell is steel or stainless steel.
In the utility model, described heat-insulation layer is rock wool.Rock wool is high temperature resistant, and thermal conductivity factor is little, effectively can stop the thermal loss of inwall and endothermic tube.
In the utility model, described glass cover-plate is ultra-clear glasses.Glass cover-plate is positioned at cavity hatch place, seals to cavity, effectively can reduce the higher air of cavity inner temperature and lose with extraneous heat convection.
In cavity absorber of the present utility model, cavity entirety presents semi-cylindrical, and the sunray after focusing focuses at glass cover-plate place, after glass cover-plate, comparatively be evenly dispersed in cavity semicircular inner walls, absorbed by fin-tube type tube sheet, there will not be hot-spot phenomenon.The tube fin type heat exchange structure that heat-exchanging tube bundle and inwall are formed, allows absorbed heat effectively can be absorbed by the working medium flowed.
Cavity absorber of the present utility model is used for line focus heat collector, semicircular inwall, and incident focused radiation can better be made to be uniformly distributed, and ensures to be consistent by the fluid temperature (F.T.) heated in each endothermic tube, shows better photothermal conversion performance.Absorber two ends are without the need to re-using current divider, and structure is simple, easy to connect.And this cavity absorber structure is simple, is convenient to production and processing, with low cost.
Compared with prior art, the utility model has following remarkable result:
(1) sunray after cavity absorber focusing of the present utility model is evenly distributed on semicircle absorber inwall, and absorber is heated evenly, and can not produce hot-spot phenomenon;
(2) the fin-tube type heat-absorbing structure that the utility model cavity absorber is red can absorb the solar radiation heat after focusing effectively, and good economy performance;
(3) endothermic tube of the utility model cavity absorber is designed to snakelike, and cavity absorber two ends do not need current divider, manufactures easily;
(4) cavity absorber structure of the present utility model is simple, and size is determined as required, and only need traditional material and manufacturing technology just can produce, processing is simple, relative low price.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
Fig. 1 is the perspective view of the utility model cavity absorber removing heat-insulation layer;
Fig. 2 is the schematic cross-section of the utility model cavity absorber;
Fig. 3 is the structural representation of restraining that absorbs heat in the utility model cavity absorber.
Description of reference numerals
1, shell; 2, heat-insulation layer; 3, inwall; 4, endothermic tube; 41, bridge piece;
42, fluid interface pipe; 5, glass cover-plate; 6, cavity.
Detailed description of the invention
The cavity absorber based on linear fresnel solar heat collector as shown in Figure 1 to Figure 3, this cavity absorber semicircular in shape back-off fluted shape on the whole, this cavity absorber comprises cavity 6 in housing, housing, is positioned at the endothermic tube 4 of cavity and is positioned at the glass cover-plate 5 of cavity hatch place for cap seal cavity 6.
Housing is semi-cylindrical shaped, housing comprises semicircle back-off slot type shell 1 and is concentrically ringed semicircular inner walls 3 with shell 1, heat-insulation layer 2 is filled with between shell 1 and inwall 3, cavity 6 is semi-cylindrical, wherein, endothermic tube 4 is five, five endothermic tubes 4 are all attached on inwall 3, five endothermic tubes 4 are the straight tube axially arranged along cavity, and five endothermic tubes 4 are evenly arranged along the inwall 3 of circular arc, five endothermic tubes 4 are in series successively to form to curve and roundabout are similar to snakelike folding shape heat-exchanging tube bundle, and this heat-exchanging tube bundle and inwall form tube fin type heat exchange structure.Adjacent endothermic tube is connected by semicircular bridge piece 41 at the place of curving, and the endothermic tube 4 being positioned at endothermic tube beam port place is also connected with the fluid interface pipe 42 of S shape.Cavity absorber two ends do not need current divider, and structure is simple, and two cavity absorbers directly can be connected by fluid interface pipe 42.
Shell 1 and inwall 3 are concentric circles cylinder, are heat-insulation layer 2 between cylinder; Institute's inwall 3 and endothermic tube 4 fit tightly, and form tube fin type heat exchange structure, body structure surface scribbles the selective coating of black; Glass cover-plate 5 is positioned at cavity hatch place, seals cavity.
Endothermic tube 4 has five, and bore is 40mm, is evenly distributed on inwall 3, and five endothermic tubes 4 all adopt the seamless steel pipe that bearing capacity is good, and because managing interior possibility directly generating steam, pressure is larger; Inwall 3 surface scribbles copper oxide coating as black selective coating, to reduce endothermic tube surface to the emissivity of sun light reflectance and long-wave radiation.
The aluminium that inwall 3 adopts heat conductivility excellent, surface also scribbles copper oxide coating as black selective coating, fits tightly with endothermic tube 4, forms fin-tube type heat-absorbing structure.The radiations heat energy arriving inwall 3 is absorbed by inwall, conducts to endothermic tube 4.
Semicircle back-off slot type shell 1 is stainless steel material, and diameter is 700mm, plays a part to wrap up heat-insulation layer 2, also plays a supportive role simultaneously, ensures that absorber is indeformable.Shell 1 also can adopt steel.
Heat-insulation layer 2 adopts rock wool, high temperature resistant, and thermal conductivity factor is little, and thickness is 80mm, effectively can stop the heat conduction loss of inwall 3 and endothermic tube 4.
Glass cover-plate 5 is the ultra-clear glasses of high transmission rate, and thickness is 3.2mm, is positioned at the opening part of cavity 6, seals to cavity, effectively reduces the heat convection of air with the external world and the loss of heat conduction that in cavity 6, temperature is higher.
Absorber cavity 6 entirety presents semi-cylindrical, and the sunray after focusing focuses at glass cover-plate 5 place, after glass cover-plate 5, is comparatively evenly dispersed in cavity semicircular inner walls 3, is absorbed by fin-tube type tube plate structure, there will not be hot-spot phenomenon.
The length that the length of cavity absorber arranges according to the heat collector speculum of reality and determining, along with heat collector location latitude increases, absorber length needs suitably to lengthen, and drops on outside absorber to prevent the solar radiation after focusing on.
As the conversion of the present embodiment, endothermic tube also can adopt many of more than two, such as four or the six roots of sensation etc., many endothermic tubes are all attached on described inwall, many endothermic tubes are the straight tube axially arranged along cavity, and many endothermic tubes are evenly arranged, many endothermic tubes are in series successively to form and curve roundabout folding shape heat-exchanging tube bundle, and this heat-exchanging tube bundle and inwall form the tube fin type heat exchange structure of cavity absorber.
Above-described embodiment of the present utility model is not the restriction to the utility model protection domain; embodiment of the present utility model is not limited thereto; all this kind is according to foregoing of the present utility model; according to ordinary technical knowledge and the customary means of this area; do not departing under the utility model above-mentioned basic fundamental thought prerequisite; to the amendment of other various ways that the utility model said structure is made, replacement or change, all should drop within protection domain of the present utility model.
Claims (6)
1. the cavity absorber based on linear fresnel solar heat collector, comprise housing, cavity in housing, be positioned at the endothermic tube of cavity and the glass cover-plate of cap seal cavity, it is characterized in that: described housing is semi-cylindrical shaped, housing comprises shell and inwall, heat-insulation layer is filled with between shell and inwall, described cavity is semi-cylindrical, described endothermic tube is many of more than two, many endothermic tubes are all attached on described inwall, many endothermic tubes are the straight tube axially arranged along cavity, many endothermic tubes are in series successively to form and curve roundabout folding shape heat-exchanging tube bundle, this heat-exchanging tube bundle and inwall form tube fin type heat exchange structure.
2. the cavity absorber based on linear fresnel solar heat collector according to claim 1, it is characterized in that: described endothermic tube is five, adjacent endothermic tube is connected by semicircular bridge piece at the place of curving, and the endothermic tube being positioned at endothermic tube beam port place is also connected with the fluid interface pipe of S shape.
3. the cavity absorber based on linear fresnel solar heat collector according to claim 1, is characterized in that: described endothermic tube is seamless steel pipe, and endothermic tube surface is coated with one deck copper oxide coating.
4. the cavity absorber based on linear fresnel solar heat collector according to claim 1, is characterized in that: the material of described inwall is aluminium, and inner wall surface is coated with one deck copper oxide coating.
5. the cavity absorber based on linear fresnel solar heat collector according to claim 1, is characterized in that: described heat-insulation layer is rock wool.
6. the cavity absorber based on linear fresnel solar heat collector according to claim 1, is characterized in that: described glass cover-plate is ultra-clear glasses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520820616.3U CN205191941U (en) | 2015-10-21 | 2015-10-21 | Cavity absorber based on linear fei nieer solar collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520820616.3U CN205191941U (en) | 2015-10-21 | 2015-10-21 | Cavity absorber based on linear fei nieer solar collector |
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| Publication Number | Publication Date |
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| CN205191941U true CN205191941U (en) | 2016-04-27 |
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| CN201520820616.3U Active CN205191941U (en) | 2015-10-21 | 2015-10-21 | Cavity absorber based on linear fei nieer solar collector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157249A (en) * | 2015-10-21 | 2015-12-16 | 广东电网有限责任公司电力科学研究院 | Cavity absorber based on linear Fresnel solar thermal collector |
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- 2015-10-21 CN CN201520820616.3U patent/CN205191941U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157249A (en) * | 2015-10-21 | 2015-12-16 | 广东电网有限责任公司电力科学研究院 | Cavity absorber based on linear Fresnel solar thermal collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170818 Address after: 510630, No. fifth, No. 146-150, Whampoa Avenue, Tianhe District, Guangdong, Guangzhou Co-patentee after: Shanghai Jiaoying Energy Technology Co., Ltd. Patentee after: Guangdong Electric Power Research Institute of energy technology limited liability company Address before: 510080 Dongfeng East Road, Guangdong, Guangzhou, water, Kong Kong, No. 8 Co-patentee before: Shanghai Jiaoying Energy Technology Co., Ltd. Patentee before: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200304 Address after: 510000 room 501-503, annex building, Huaye building, No.1-3, Chumo new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee after: Guangdong Electric Power Research Institute of energy technology limited liability company Address before: 510630, No. 146-150, No. fifth, Whampoa Avenue, Tianhe District, Guangdong, Guangzhou Co-patentee before: SHANGHAI JOIN-IN TECHNOLOGIES Co.,Ltd. Patentee before: Guangdong Electric Power Research Institute of energy technology limited liability company |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Patentee after: China Southern Power Grid Power Technology Co.,Ltd. Address before: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Patentee before: GUANGDONG ELECTRIC POWER SCIENCE RESEARCH INSTITUTE ENERGY TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |