CN102374671A - Hemispherical cavity type solar heat collection device - Google Patents
Hemispherical cavity type solar heat collection device Download PDFInfo
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- CN102374671A CN102374671A CN2011103584383A CN201110358438A CN102374671A CN 102374671 A CN102374671 A CN 102374671A CN 2011103584383 A CN2011103584383 A CN 2011103584383A CN 201110358438 A CN201110358438 A CN 201110358438A CN 102374671 A CN102374671 A CN 102374671A
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- heat collector
- coil pipe
- hemispherical
- heat
- solar energy
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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
The invention discloses a hemispherical cavity type solar heat collection device. The structure of the hemispherical cavity type solar heat collection device is that: a heat collector shell is a hemispherical surface; a coil pipe is laid on the inner wall of the spherical surface; a plane of the heat collector shell is provided with a round lighting port; a quartz glass sheet is embedded in the lighting port to seal an inner cavity; and the hemispherical inner cavity has a vacuum degree. A reflective cone is arranged in the dome center of the inner cavity, and an insulating layer is arranged between the heat collector shell and the coil pipe. A coil pipe inlet is fixed on the edge of the round lighting port, the coil pipe is arranged by clinging to the wall of the inner cavity of the heat collector shell from bottom to top and enwinding circularly, and a coil pipe outlet is fixed next to the dome reflective cone in the inner cavity. The reflective cone can uniformly distribute focused energy on the coil pipe on a heat collection cavity inner wall through a reflected radiation effect. The lighting port is closed by the quartz glass sheet, so that flowing heat exchange losses between a heat collector and the outside world are reduced on the premise of ensuring that the energy enters the heat collector, and the hemispherical cavity type solar heat collection device is particularly suitable for acquiring the energy of medium-temperature and high-temperature heat sources by adopting solar energy.
Description
Technical field
The present invention relates to a kind of solar energy heat collector, be specifically related to high-temperature heat-gathering device in the hemispherical cavate that a kind of disc type solar energy utilizes.
Background technology
Solar energy belongs to the regenerative resource of high-quality, so solar energy utilization technique receives extensive concern always, and the generating of disc type solar energy thermal-arrest high temperature wherein research is the comparatively technology in forward position of current solar energy heat utilization field.Because the optically focused of disc type solar energy heat generating system reaches as high as 3000 than (ratio of collection area and collector area); Have two advantages simultaneously: the one, make that the endotherm area of receiver is very little; The 2nd, make the reception temperature of receiver reach more than 800 ℃, so the high-photoelectric transformation efficiency of disc type solar energy heat generating can reach 29.4%.Because the focus temperature of disc type solar energy heat collector is very high, so the design of heat collector and create one of key technology in the disc type solar energy heat generating system.Although it is multiple that the form of solar thermal collector has, the subject matter that exists is that focus temperature is very high but radiation loss is also bigger.Hemispherical cavate heat collector proposed by the invention can remedy this defective, makes when obtaining very high focus temperature, has the minimum characteristics of radiation loss again.
Summary of the invention
The objective of the invention is to: in order to reduce the radiation loss of dish formula focused solar energy, a kind of hemispherical cavate heat collector is provided, is used for solar energy medium and high temperature heat utilization system.
Hemispherical cavate solar energy heat collector comprises: heat collector housing, reflection cone, coil pipe, quartz glass plate and heat-insulation layer etc.The heat collector housing is a hemisphere face, and the sphere inwall lays coil pipe, and the plane of heat collector housing is provided with circular aperture, and the quartz glass plate that aperture is embedded with seals inner chamber, and the hemispherical inner chamber has vacuum.Be provided with the reflection cone at inner chamber dome center, be provided with heat-insulation layer between heat collector housing and the coil pipe.The coil pipe import is fixed on circular aperture edge, twines and to arrange along the adherent from bottom to top annular of doing of heat collector housing inner chamber, and the coil pipe outlet is fixed on the next door of inner chamber dome reflection cone.
Hemispherical cavate solar energy heat collector is to design according to the ability distributions characteristics behind the solar light focusing; In the high temperature heat radiation process; Sunshine after the focusing gets into airtight heat collector through aperture (quartz glass); Energy is absorbed by coil pipe, and the reflection cone that is provided with simultaneously reflexes to the radiation of centre focus again on the coil pipe of inner walls, absorbs so have higher radiant heat.The purpose that the reflection cone of enough bearing high temperature is set is, through reflected radiation the energy even that focuses on is distributed on the coil pipe of thermal-arrest cavity inner wall, and the fluid in the coil pipe is heated.
The present invention has following some beneficial effect: (1) collecting efficiency is high, and the reflection cone body can be distributed in the energy even that focuses on the coil pipe of thermal-arrest cavity inner wall through the reflected radiation effect; (2) aperture seals with quartz glass plate, is guaranteeing that energy gets under the prerequisite of heat collector, reduces heat collector and extraneous fluid interchange loss; (3) simple in structure, be easy to processing and dismounting, be specially adapted to adopt obtaining of solar energy centering, high temperature heat source energy.
Description of drawings
Shown in accompanying drawing be the principle of the invention and modular construction section simplified schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing and through embodiment theory structure of the present invention is further described.Hemispherical cavate solar energy heat collector; Its architectural feature is: heat collector housing 1 is hemisphere face, and the sphere inwall lays coil pipe 2, and the plane of heat collector housing is provided with circular aperture; The quartz glass plate 3 that aperture is embedded with is with the inner chamber sealing, and the hemispherical inner chamber has vacuum.Be provided with reflection cone 4 at inner chamber dome center, be provided with heat-insulation layer 5 between heat collector housing and the coil pipe.The coil pipe import is fixed on circular aperture edge, twines and to arrange along the adherent from bottom to top annular of doing of heat collector housing inner chamber, and the coil pipe outlet is fixed on the next door of inner chamber dome reflection cone.The reflection cone material is a brass, and cone is fixed through screw.The import of coil pipe is fixed on circular aperture edge, and the coil pipe outlet is fixed on reflection cone next door.Reflection cone apex is 90 °～120 ° scopes.
Present embodiment reflection cone apex is 100 °, and the working media in the coil pipe adopts conduction oil, and heatproof is higher than 400 ℃, and viscosity is little, and mobile strong, heat conductivility is strong.Through calculating and measuring, reflection cone apex is 100 °, and focused ray and conical surface angle β can be less than 90 °.The focusing ratio of reflection cone can reach 600 to 1800 like this, can guarantee to drop on the coil pipe after focused ray is through the cone primary event, avoids launching heat collector from aperture, has reduced the loss of heat, has improved the hot property of heat collector.
Because quartz glass plate possesses high-transmission rate, resistant to elevated temperatures characteristic, present embodiment quartz glass transmissivity can reach more than 95%, and heatproof is up to more than 1200 ℃.Quartz glass plate has important function to improving the heat collector heat absorption capacity.
The reflection cone is processed by brass bar turning, and fusing point can bear the high temperature irradiation of optically focused light near 1000 ℃.Result's polishing and anti-oxidation processing reflection cone have higher reflectivity.
The coil pipe material adopts external diameter 10mm copper tube, and the thermal conductivity factor of red copper is 401W/mK, possesses the good capacity of heat transmission.Though heat-insulation layer should possess certain thickness, heat-insulation layer is thick more, and the heat collector volume is excessive, and shading is than becoming the big collecting efficiency that influences, and the present embodiment heat-insulation layer is the mineral wool of 50mm.
Claims (4)
1. hemispherical cavate solar energy heat collector comprises: heat collector housing, reflection cone, coil pipe, quartz glass plate and heat-insulation layer, and it is characterized in that: heat collector housing (1) is a hemisphere face; The sphere inwall lays coil pipe (2); The plane of heat collector housing is provided with circular aperture, and the quartz glass plate that aperture is embedded with (3) is with the inner chamber sealing, and the hemispherical inner chamber has vacuum; Be provided with reflection cone (4) at inner chamber dome center, be provided with heat-insulation layer (5) between heat collector housing and the coil pipe.
2. according to the described hemispherical cavate of claim 1 solar energy heat collector; It is characterized in that said coil pipe (2) import is fixed on circular aperture edge; Twine and arrange along the adherent from bottom to top annular of doing of said heat collector housing (1) inner chamber, the coil pipe outlet is fixed on the next door of inner chamber dome reflection cone.
3. according to the described hemispherical cavate of claim 1 solar energy heat collector, it is characterized in that said reflection cone (4) material is a brass, cone is fixed through screw.
4. according to the described hemispherical cavate of claim 1 solar energy heat collector, it is characterized in that said reflection cone apex is 90 °～120 ° scopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103584383A CN102374671A (en) | 2011-11-14 | 2011-11-14 | Hemispherical cavity type solar heat collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103584383A CN102374671A (en) | 2011-11-14 | 2011-11-14 | Hemispherical cavity type solar heat collection device |
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| Publication Number | Publication Date |
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| CN102374671A true CN102374671A (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011103584383A Pending CN102374671A (en) | 2011-11-14 | 2011-11-14 | Hemispherical cavity type solar heat collection device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322694A (en) * | 2011-08-31 | 2012-01-18 | 华南理工大学 | Spherical cavity type solar heat absorber with inwardly concave glass cover |
| CN103900280A (en) * | 2014-04-29 | 2014-07-02 | 李治国 | Heat collection heating device |
| CN104566615A (en) * | 2015-01-17 | 2015-04-29 | 深圳职业技术学院 | Solar heating control system |
| CN105841363A (en) * | 2016-04-30 | 2016-08-10 | 华南理工大学 | Semi-embedding type eight-shaped cavity type solar receiver and working method thereof |
| CN110214254A (en) * | 2016-12-28 | 2019-09-06 | 桑吉维·达莫达·苏里亚万希 | Curved surface absorbs type solar energy fluid heater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4148300A (en) * | 1977-09-01 | 1979-04-10 | Kaufman Sr Larry L | Solar radiation energy concentrator |
| US4212290A (en) * | 1978-03-06 | 1980-07-15 | Warnken Warren L | Solar collector |
| CN101216220A (en) * | 2008-01-14 | 2008-07-09 | 东南大学 | Special-shaped modular type hollow space solar energy high-temperature receiver |
| CN101706161A (en) * | 2009-11-25 | 2010-05-12 | 哈尔滨工业大学 | Cavity type solar heat absorber provided with optical window |
| CN201748667U (en) * | 2010-07-20 | 2011-02-16 | 益科博能源科技（上海）有限公司 | Solar collector with transparent cover body |
-
2011
- 2011-11-14 CN CN2011103584383A patent/CN102374671A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4148300A (en) * | 1977-09-01 | 1979-04-10 | Kaufman Sr Larry L | Solar radiation energy concentrator |
| US4212290A (en) * | 1978-03-06 | 1980-07-15 | Warnken Warren L | Solar collector |
| CN101216220A (en) * | 2008-01-14 | 2008-07-09 | 东南大学 | Special-shaped modular type hollow space solar energy high-temperature receiver |
| CN101706161A (en) * | 2009-11-25 | 2010-05-12 | 哈尔滨工业大学 | Cavity type solar heat absorber provided with optical window |
| CN201748667U (en) * | 2010-07-20 | 2011-02-16 | 益科博能源科技（上海）有限公司 | Solar collector with transparent cover body |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322694A (en) * | 2011-08-31 | 2012-01-18 | 华南理工大学 | Spherical cavity type solar heat absorber with inwardly concave glass cover |
| CN103900280A (en) * | 2014-04-29 | 2014-07-02 | 李治国 | Heat collection heating device |
| CN103900280B (en) * | 2014-04-29 | 2016-01-20 | 李治国 | Thermal-arrest heat riser |
| CN104566615A (en) * | 2015-01-17 | 2015-04-29 | 深圳职业技术学院 | Solar heating control system |
| CN104566615B (en) * | 2015-01-17 | 2017-07-21 | 深圳职业技术学院 | Solar heating control system |
| CN105841363A (en) * | 2016-04-30 | 2016-08-10 | 华南理工大学 | Semi-embedding type eight-shaped cavity type solar receiver and working method thereof |
| CN105841363B (en) * | 2016-04-30 | 2018-02-27 | 华南理工大学 | A kind of word profile cavity-type solar heat dump of half built-in 8 and its method of work |
| CN110214254A (en) * | 2016-12-28 | 2019-09-06 | 桑吉维·达莫达·苏里亚万希 | Curved surface absorbs type solar energy fluid heater |
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Application publication date: 20120314 |