CN203443142U - Solar cavity heat absorber with half-open type transparent aperture hole cover - Google Patents
Solar cavity heat absorber with half-open type transparent aperture hole cover Download PDFInfo
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- CN203443142U CN203443142U CN201320389765.XU CN201320389765U CN203443142U CN 203443142 U CN203443142 U CN 203443142U CN 201320389765 U CN201320389765 U CN 201320389765U CN 203443142 U CN203443142 U CN 203443142U
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- cavity heat
- heat dump
- cavity
- heat absorber
- open type
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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 solar cavity heat absorber with a half-open type transparent aperture hole cover. The half-open type transparent aperture hole cover is arranged at an opening of a cavity heat absorber body. The cavity heat absorber body comprises a cavity heat absorber outer wall thermal insulation material, a heat absorber inner wall face, a heat absorbing pipe and connection threads; the cavity heat absorber body is an opening type cylindrical cavity heat absorber; the side wall of the cavity heat absorber body is sequentially provided with the cavity heat absorber outer wall thermal insulation material, the heat absorber inner wall face and the heat absorbing pipe from outside to inside; the heat absorbing pipe is a heat pipe; the connection threads are arranged at the opening of the cavity heat absorber body; the cavity heat absorber body is connected with the half-open type transparent aperture hole cover through the connection threads; the focal point or the focal plane of a reflector coincides with the center of the plane of the opening of the cavity heat absorber body. According to the solar cavity heat absorber with the half-open type transparent aperture hole cover, the theoretical and experimental basis is provided for light collaborative optimization design and convection heat loss restraint of disc type solar cavity heat absorbers in the practical application, and the positive promoting role is played in the scale development of the disc type thermal power generation technology.
Description
Technical field
The utility model relates to helioplant, relates in particular to a kind of solar energy cavity heat dump with the transparent aperture port lid of semi-open type.
Background technology
Existing Dish solar thermal power system is comprised of dish formula parabolic mirror, cavity heat dump and Stirling-electric hybrid three parts conventionally.The solar radiation gross energy that system receives has a big chunk to consume with the form of heat loss, and wherein the heat loss of cavity heat dump has accounted for again the larger proportion of total heat loss.The heat loss of cavity heat dump can be divided into three kinds heat-transfer mechanism, that is: the convection current of high temperature air in cavity, by the radiation of diaphragm hole with by the heat conduction of cavity wall.Heat conduction shared ratio in total heat loss is minimum, conventionally at cavity heat dump, lays certain thickness heat-resistant insulation material outward and can obtain good effect.Radiation and convection current have occupied the overwhelming majority in total heat loss, and wherein convection heat losses's proportion can be up to 40%.
Cavity heat dump convection heat losses's influence factor and variation characteristic illustrated in correlative study both at home and abroad at present, proposed some and can effectively improve the novel cavity geometry of light and heat collection efficiency, but not yet systematically to suppressing convection heat losses's approach, explored.Thinking is by install a transparent port lid additional on cavity heat dump diaphragm hole, and the cross-ventilation inside and outside isolated cavity is to suppress convection heat losses.As Chinese patent 200910310370.4 proposes a kind of cavity type solar heat absorber with optical window, the secondary reflection effect of optical window has improved the uniformity that cavity inner wall radiant flux distributes, has reduced heat loss, and there is a critical-temperature point, when higher than this temperature, use aperture port lid can promote the heat absorption efficiency of cavity.Yet the existence that the shortcoming of the method is port lid also can reduce the total absorption of cavity to solar radiation energy to a certain extent, the space that has further improvement to promote.
Summary of the invention
The purpose of this utility model is large in order to solve complete open type cavity heat dump convection losses, cavity receiver with optical window has reduced the problems such as total absorption of cavity to solar radiation energy, and a kind of solar energy cavity heat dump with the transparent aperture port lid of semi-open type is provided.
For achieving the above object, the utility model is by the following technical solutions:
Solar energy cavity heat dump with the transparent aperture port lid of semi-open type comprises cavity heat dump, the transparent aperture port lid of semi-open type, speculum, mirror support, at cavity heat dump opening part, be provided with the transparent aperture port lid of semi-open type, speculum is fixed by mirror support, cavity heat dump comprises cavity heat dump outer wall insulation material, heat dump internal face, endothermic tube, connecting thread, cavity heat dump is open type cylindrical cavity heat dump, cavity heat dump body sidewall is provided with cavity heat dump outer wall insulation material from outside to inside in turn, heat dump internal face, endothermic tube, endothermic tube is heat pipe, evenly coiling is distributed on described heat dump internal face, cavity heat dump body openings place is provided with connecting thread, cavity heat dump body is connected by the transparent aperture port lid of connecting thread and semi-open type, the plane of the opening center superposition of the focus of speculum or focal plane and cavity heat dump.
The transparent aperture port lid of described semi-open type be shaped as annular, semicircle, semi-circular, crescent.
The utility model compared with prior art, has following beneficial effect:
(1) cavity heat dump opening part adds a transparent aperture port lid of semi-open type, take into account solar radiation energy absorption and convection heat losses and suppress two aspects, the transmitance that is not affecting usable reflection sunshine and enter heat dump, can effectively reduce the convection losses of high temperature air in cavity, and improved uniform distribution of temperature field degree in heat dump, overcome existing complete open type heat dump convection losses large and with the low defect of optical window heat dump sunshine transmitance.
(2) the transparent aperture port lid of semi-open type is convenient to dismounting, cleans and is installed.
Accompanying drawing explanation
Fig. 1 is the structural representation with the solar energy cavity heat dump of the transparent aperture port lid of semi-open type;
Fig. 2 (a1) is complete open type cavity heat dump of the present utility model;
Fig. 2 (a2) is A-A cutaway view in Fig. 2 (a1);
Fig. 2 (a3) be complete open type cavity heat dump Open Side Down tilts after 30 °, convection current flow field schematic diagram;
Fig. 3 (b1) is the half opening formula cavity heat dump of the annular transparent optical circle of band of the present utility model port lid;
Fig. 3 (b2) is B-B cutaway view in Fig. 3 (b1);
Fig. 3 (b3) be half opening formula cavity heat dump with annular transparent optical circle port lid Open Side Down tilts after 30 °, convection current flow field schematic diagram;
Fig. 4 (c1.1) is the half opening formula cavity heat dump of the annular transparent optical circle of band of the present utility model port lid;
Fig. 4 (c1.2) is B-B cutaway view in Fig. 4 (c1.1);
Fig. 4 (c1.3) be half opening formula cavity heat dump with annular transparent optical circle port lid Open Side Down tilts after 30 °, convection current flow field schematic diagram;
Fig. 4 (c2) is C-C cutaway view in Fig. 4 (c1.1), Fig. 4 (c1.2), Fig. 4 (c1.3);
Fig. 4 (c3) be half opening formula cavity heat dump with annular transparent optical circle port lid Open Side Down tilts after 30 °, convection current flow field schematic diagram;
In figure: cavity heat dump 1, cavity heat dump outer wall insulation material 2, heat dump wall 3, endothermic tube 4, connecting thread 5, the transparent aperture port lid 6 of semi-open type, speculum 7, mirror support 8, the transparent aperture port lid 6 of semi-open type comprises annular transparent aperture port lid 6.1, semicircle transparent aperture port lid 6.2, the transparent aperture port lid 6.3 of semi-circular, the transparent aperture port lid 6.4 of crescent.
The specific embodiment
As shown in Figure 1, the solar energy cavity heat dump with the transparent aperture port lid of semi-open type comprises cavity heat dump 1, the transparent aperture port lid 6 of semi-open type, speculum 7, mirror support 8, at cavity heat dump 1 opening part, be provided with the transparent aperture port lid 6 of semi-open type, speculum 7 is fixing by mirror support 8, cavity heat dump 1 comprises cavity heat dump outer wall insulation material 2, heat dump internal face 3, endothermic tube 4, connecting thread 5, cavity heat dump 1 is open type cylindrical cavity heat dump, cavity heat dump 1 body sidewall is provided with cavity heat dump outer wall insulation material 2 from outside to inside in turn, heat dump internal face 3, endothermic tube 4, endothermic tube 4 is heat pipe, evenly coiling is distributed on described heat dump internal face 3, cavity heat dump 1 body openings place is provided with connecting thread 5, cavity heat dump 1 body is connected with the transparent aperture port lid 6 of semi-open type by connecting thread 5, the plane of the opening center superposition of the focus of speculum 7 or focal plane and cavity heat dump 1.
The transparent aperture port lid 6 of described semi-open type be shaped as annular 6.1, semicircle 6.2, semi-circular 6.3, crescent 6.4.
As shown in Figure 4, the transparent aperture port lid 6 of semi-open type comprises annular transparent aperture port lid 6.1, semicircle transparent aperture port lid 6.2, the transparent aperture port lid 6.3 of semi-circular, the transparent aperture port lid 6.4 of crescent etc.If cavity heat dump 1 all tilts 30 ° under shed, contrast by Fig. 2 (a3), Fig. 3 (b3), Fig. 4 (c3) can be found out, the installation of the transparent aperture port lid 6 of semi-open type moves down the quiescent centre of the interior heat exchange miscarriage of cavity heat dump 1 and the horizontal line of demarcation between convective region, effectively reduce the convective region in cavity heat dump 1, suppressed convection losses successful.
Solar energy cavity heat absorption method with the transparent aperture port lid of semi-open type is: solar light irradiation is on speculum 7, through reflection, directly sunshine is converged to cavity heat dump 1 inside, part is absorbed by endothermic tube 4, through endothermic tube 4 and heat dump internal face 3, there is diffuse reflection in part, the transparent aperture port lid 6 of semi-open type diffuses part to be reflected back heat dump 1 inside again, multiple reflections is conducive to heat dump 1 internal heat and is uniformly distributed, the size of the solar facula that transparent aperture port lid 6 openings of sizes of semi-open type form according to speculum 7 reflected sunlights is determined, guarantee to take into account sunshine transmitance and suppress convection losses, endothermic tube 4 absorption heats transfer to external motive device and are used.
Claims (2)
1. with a solar energy cavity heat dump for the transparent aperture port lid of semi-open type, it is characterized in that comprising cavity heat dump (1), the transparent aperture port lid of semi-open type (6), speculum (7), mirror support (8), at cavity heat dump (1) opening part, be provided with the transparent aperture port lid of semi-open type (6), speculum (7) is fixing by mirror support (8), cavity heat dump (1) comprises cavity heat dump outer wall insulation material (2), heat dump internal face (3), endothermic tube (4), connecting thread (5), cavity heat dump (1) is open type cylindrical cavity heat dump, cavity heat dump (1) body sidewall is provided with cavity heat dump outer wall insulation material (2) from outside to inside in turn, heat dump internal face (3), endothermic tube (4), endothermic tube (4) is heat pipe, evenly coiling is distributed on described heat dump internal face (3), cavity heat dump (1) body openings place is provided with connecting thread (5), cavity heat dump (1) body is connected with the transparent aperture port lid of semi-open type (6) by connecting thread (5), the plane of the opening center superposition of the focus of speculum (7) or focal plane and cavity heat dump (1).
2. a kind of solar energy cavity heat dump with the transparent aperture port lid of semi-open type according to claim 1, what it is characterized in that the transparent aperture port lid of semi-open type (6) is shaped as annular (6.1), semicircle (6.2), semi-circular (6.3), crescent (6.4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320389765.XU CN203443142U (en) | 2013-07-02 | 2013-07-02 | Solar cavity heat absorber with half-open type transparent aperture hole cover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320389765.XU CN203443142U (en) | 2013-07-02 | 2013-07-02 | Solar cavity heat absorber with half-open type transparent aperture hole cover |
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| CN203443142U true CN203443142U (en) | 2014-02-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344050A (en) * | 2013-07-02 | 2013-10-09 | 浙江大学 | Solar cavity heat absorber with semi-open-type transparent aperture hole cover and method thereof |
| CN103868245A (en) * | 2014-03-10 | 2014-06-18 | 兰州理工大学 | Mixed heat collecting structure of disc type solar thermal power generation system |
| 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 |
-
2013
- 2013-07-02 CN CN201320389765.XU patent/CN203443142U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344050A (en) * | 2013-07-02 | 2013-10-09 | 浙江大学 | Solar cavity heat absorber with semi-open-type transparent aperture hole cover and method thereof |
| CN103868245A (en) * | 2014-03-10 | 2014-06-18 | 兰州理工大学 | Mixed heat collecting structure of disc type solar thermal power generation system |
| 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 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20160702 |
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| CF01 | Termination of patent right due to non-payment of annual fee |