CN1766460A - Cavity type absorber for solar energy collection system - Google Patents
Cavity type absorber for solar energy collection system Download PDFInfo
- Publication number
- CN1766460A CN1766460A CNA2005100105752A CN200510010575A CN1766460A CN 1766460 A CN1766460 A CN 1766460A CN A2005100105752 A CNA2005100105752 A CN A2005100105752A CN 200510010575 A CN200510010575 A CN 200510010575A CN 1766460 A CN1766460 A CN 1766460A
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- China
- Prior art keywords
- absorber
- cavity type
- solar energy
- type absorber
- pyriform
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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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- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a cavity absorber of solar accumulation system, which comprises the following parts: parabolic reflecting mirror, parabolic reflecting mirror rack with connection rack, pyriform cavity absorber on the connection rack and inner pipe in the pyriform cavity absorber, wherein the pyriform cavity absorber can make pipe surface heat flow display equivalent distribution on the inner wall face of absorber, which transfers the solar energy into heat sufficiently through the working dielectric in the absorber pipe. The structure improves the solar heat utility, which avoids the absorber and other inner equipment from burning due to local excessive temperature of heat flow.
Description
(1) technical field
The present invention relates to the cavity type absorber of a kind of solar focusing system.
(2) background technology
The solar energy high temperature heat utilization is important research project of current field of solar energy, for example: solar energy thermal-power-generating and solar biomass gasification hydrogen-producing.In these systems, all be to utilize the solar focusing system that solar energy collecting is utilized then to the cavity type absorber the inside.Because the influence of factors such as sunshine malalignment and manufacturing, installation, often occur in the solar concentrating system that focal beam spot is big, the absorber heat flux distribution is inhomogeneous, local temperature is crossed problems such as height, and absorber often is under the environment of HTHP, if its wall heat flux distribution is inhomogeneous, be easy to cause problems such as booster, blast.These more external special occasions, as utilize solar energy biomass gasifying hydrogen making under super critical condition, the spatially uniform of the heat flux distribution of absorber still directly influences a very important factor of hydrogen production efficiency.
To the research of the poly-systematic function of solar energy and the cavity type absorber that designs, major part was only noted the energy-flux density distribution problem of focal plane in the past, and had ignored the direction in space distribution character of assembling back solar energy.Except that the energy-flux density distribution of focal plane, the directional characteristic of focusing energy stream distributes to the energy-flux density in the cavity type absorber and has a direct impact, and is the important prerequisite that realizes rational absorber structure design.Along with China's solar energy high temperature heat utilization demand increases day by day, urgent requirement has been proposed in the development that efficiently utilizes solar energy to carry out heat generating and biomass gasifying hydrogen making technology.Therefore, studying and design solar energy collection system safely and efficiently all is that crucial meaning is arranged to the development of China's solar energy utilization and whole national economy.
(3) summary of the invention
The objective of the invention is to propose a kind of efficiency of utilization that can improve solar energy, avoided causing too high absorber and the internal unit of burning of temperature, the cavity type absorber of safe and reliable solar energy collection system owing to localized heat flows through height.
The present invention is achieved in that it comprises that parabolic mirror, parabolic mirror are installed on the parabolic mirror support, have the connection support on the parabolic mirror support, on the connection support, the pyriform cavity type absorber is installed, is laying internal pipeline at the pyriform cavity type absorber.
The invention has the advantages that: the cavity type absorber wall is top point, broad in the middle, pyriform that bottom opening is little, and this pyriform cavity type absorber wall such as has at the characteristics that heat flow density distributes.Sunshine converges to the position of focal plane after the parabolic mirror reflection, enter cavity type absorber, adds the working medium of the inner various pipelines of heat absorber the inside, utilizes heat to generate electricity or hydrogen manufacturing.And pyriform cavity type absorber surface radian size such as is based at the thought of heat flow density face, is optimized by numerical method that design obtains.Present Digit Control Machine Tool can be realized the processing of high order curved surface fully, thereby arrives the purpose of practical application.By the pyriform cavity type absorber among the present invention, can realize that the pipe surface hot-fluid of installing on the inner wall of cavity type absorber has equivalent the distribution, and hot-fluid face shape cavity type absorber openings such as utilization are little, structure broad in the middle makes solar heat fully be absorbed by the working medium of pipe interior in cavity type absorber inside, solar energy is carried out heat conversion fully, improve the efficiency of utilization of solar energy, avoid causing too high absorber and the internal unit of burning of temperature owing to localized heat flows through height, in case because the wall surface temperature value greater than or also can cause booster near the thermic load higher limit of pipeline material, danger such as blast.Therefore, the present invention is a kind of safe and efficient cavity type absorber device that utilizes solar energy.
(4) description of drawings
Accompanying drawing is a structural representation of the present invention.
(5) specific embodiment
For a more detailed description to the utility model for example below in conjunction with accompanying drawing:
The composition of the cavity type absorber of solar energy collection system comprises that parabolic mirror 1, parabolic mirror are installed on the parabolic mirror support 2, have on the parabolic mirror support 2 and connect support 3, on connection support 3, pyriform cavity type absorber 4 is installed, lay internal pipeline 5 in pyriform cavity type absorber 4 the insides, be filled with working medium in the internal pipeline 5.The edge angle of parabolic mirror is Φ
Rim, focal length is f, the opening diameter of pyriform cavity type absorber is d
a, d then
a＞0.009f/[cos Φ
Rim(1+cos Φ
Rim)], the radian size of pyriform cavity type absorber based on etc. the thought of heat flow density face, according to the physical dimension of parabolic mirror and the thermic load higher limit of corresponding pipeline material, be optimized design by numerical method and obtain.
Claims (1)
1, a kind of cavity type absorber of solar energy collection system, it comprises that parabolic mirror, parabolic mirror are installed on the parabolic mirror support, have the connection support on the parabolic mirror support, it is characterized in that: on the connection support, the pyriform cavity type absorber is installed, lay internal pipeline in pyriform cavity type absorber the inside, can realize that the pipe surface hot-fluid of installing on the inner wall of cavity type absorber has equivalent the distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100105752A CN100554815C (en) | 2005-11-25 | 2005-11-25 | A kind of cavity type absorber of solar energy collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100105752A CN100554815C (en) | 2005-11-25 | 2005-11-25 | A kind of cavity type absorber of solar energy collection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1766460A true CN1766460A (en) | 2006-05-03 |
| CN100554815C CN100554815C (en) | 2009-10-28 |
Family
ID=36742488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100105752A Expired - Fee Related CN100554815C (en) | 2005-11-25 | 2005-11-25 | A kind of cavity type absorber of solar energy collection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100554815C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706161B (en) * | 2009-11-25 | 2011-09-14 | 哈尔滨工业大学 | Cavity type solar heat absorber provided with optical window |
| CN105758011A (en) * | 2016-04-30 | 2016-07-13 | 华南理工大学 | Dual-paraboloid multi-pipe solar energy cavity type heat absorber and working method thereof |
-
2005
- 2005-11-25 CN CNB2005100105752A patent/CN100554815C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706161B (en) * | 2009-11-25 | 2011-09-14 | 哈尔滨工业大学 | Cavity type solar heat absorber provided with optical window |
| CN105758011A (en) * | 2016-04-30 | 2016-07-13 | 华南理工大学 | Dual-paraboloid multi-pipe solar energy cavity type heat absorber and working method thereof |
| CN105758011B (en) * | 2016-04-30 | 2018-05-15 | 华南理工大学 | A kind of more tube solar cavity type heat dumps of dual paraboloid and its method of work |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100554815C (en) | 2009-10-28 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20121125 |