CN109357416A - A kind of solar energy heat collection pipe of the aperture on heat dump - Google Patents
A kind of solar energy heat collection pipe of the aperture on heat dump Download PDFInfo
- Publication number
- CN109357416A CN109357416A CN201811160664.9A CN201811160664A CN109357416A CN 109357416 A CN109357416 A CN 109357416A CN 201811160664 A CN201811160664 A CN 201811160664A CN 109357416 A CN109357416 A CN 109357416A
- Authority
- CN
- China
- Prior art keywords
- heat
- heat dump
- aperture
- dump
- solar energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000011521 glass Substances 0.000 claims abstract description 28
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 2
- 230000001476 alcoholic effect Effects 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000008646 thermal stress Effects 0.000 abstract description 5
- 238000012546 transfer Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 241001424688 Enceliopsis Species 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The solar energy heat collection pipe for aperture that the invention discloses a kind of on heat dump, the thermal-collecting tube includes heat dump, heat dump is set in glass bushing, heat dump is that one end is closed using plug, the metal tube that the other end is opened, multiple apertures are disposed on heat dump, the outer surface of heat dump and inner surface and hole wall are coated with coating for selective absorption, heat transferring medium is flowed into from side, it is flowed out from aperture, sealing device is located at heat transferring medium inlet, is set between heat dump and glass bushing, applies on the outside of glass bushing selective through coating.The present invention can effectively facilitate the raising of heat dump Yu heat transferring medium convection transfer rate, while reduce the thermal stress of heat dump.
Description
Technical field
The present invention relates to field of solar heat, and in particular to a kind of solar energy heat collection pipe of the aperture on heat dump.
Background technique
With the development of the social economy, the utilization of fossil energy is on the rise to pressure caused by environment.For alleviation
Shortage problem and fossil energy the burning bring environmental problem of the stone energy, the development and utilization of renewable energy are more and more wider
It is general.Solar energy resources are inexhaustible, are the renewable energy most welcome at present by the mankind.
The Quality degree of effective utilization of solar energy depends on the factors such as the collection hot mode of solar energy and material, the structure of heat dump.
In order to improve the heat-collecting capacity and heat exchange amount of heat dump, heat dump generally uses the preferable metal material of thermal conductivity and its outer surface one
As be coated with coating for selective absorption.
Presently, there are following problems for solar heat absorber: the thermal stress distribution of 1. heat dumps is uneven.Due to sunlight
Characteristic, heat dump surface can only some receive solar radiation, this directly result in heat dump surface different location by
The inhomogeneities of heat reduces the service life of heat dump to increase the thermal stress of heat dump.2. heat dump and heat exchange are situated between
Heat exchange efficiency between matter is not high.It is at present mostly to conduct heat due to the inherent characteristic of flow field characteristic and heat transferring medium in heat dump
Medium directly washes away heat dump, and heat transfer coefficient is not high.Although there is some corrective measures, such as: ribbing piece or flow spoiler,
It will increase many resistances, general effect improvement is not obvious.
Summary of the invention
In order to solve the problems in the prior art, the present invention provides a kind of solar energy heat collection pipe of aperture on heat dump,
Heat exchange efficiency of the solution in the prior art between the thermal stress distribution unevenness of heat dump, heat dump and heat transferring medium be not high to ask
Topic.
The technical scheme is that a kind of solar energy heat collection pipe of the aperture on heat dump, which includes heat absorption
Device, heat dump are set in glass bushing, and heat dump is that one end is closed using plug, and the metal tube that the other end is opened is absorbing heat
Multiple apertures are disposed on device, the outer surface of heat dump and inner surface and hole wall are coated with coating for selective absorption, heat transferring medium
Flow into from side, flowed out from aperture, sealing device is located at heat transferring medium inlet, be set to heat dump and glass bushing it
Between, it is applied on the outside of glass bushing selective through coating.
When thermal-collecting tube is flat or vacuum tube type heat collector, then top half of the position of opening in heat dump；Vacuum tube
It needs to cover one layer of glass tube again outside thermal-collecting tube when formula solar thermal collector, be taken out between outer layer glass tube and inner layer glass tube true
It is empty.
When thermal-collecting tube is focusing heat collector, position of opening is in the lower half portion of heat dump.
The shape of the heat dump aperture is circle, ellipse, triangle, rectangle or diamond shape.
The number of aperture is a plurality of on the heat dump, and the number of rows of aperture is single row of holes, double-row hole or multiple rows of hole.
Spacing on the heat dump between Kong Yukong is equidistant or unequal spacing.
Each pore size is equal or not etc. on the heat dump.
The sealing device is sealing ring, sealing strip or gasket seal.
The heat transferring medium is the heat transferring medium of light-permeable.The heat transferring medium is water, saline solution or alcoholic solution.
The beneficial effects of the present invention are:
(1) multiple holes are provided on heat dump of the invention, heat transferring medium is flowed into from one end of heat dump, from heat dump
It is flowed out in each hole.Heat transferring medium can not only exchange heat with the inner surface of heat dump, can also pass through each of heat dump
A hole exchanges heat with heat dump, after flowing to heat dump outer surface, heat transferring medium can also with the outer surface of heat dump again into
The primary heat exchange of row.This approach increases the coefficient of heat transfer and heat exchange area of heat transferring medium and heat dump, improve heat transferring medium with
The heat exchange efficiency of heat dump.
(2) selective absorbing painting is coated on the inside of the inner surface and the outer surface of heat dump of the invention and each hole
Layer, sunlight can not only project on the outer surface of heat dump, and the aperture that may also pass through on heat dump projects heat dump
Inner surface on.The endotherm area of heat dump can't be reduced, and heat dump inner surface can be by absorbing the sun across aperture
The heat of light, can effectively improve the uniformity of heat dump radially Temperature Distribution, and then can reduce the heat of heat dump
Stress improves the service life of heat dump.
(3) when aperture size of the heat dump along pipe range direction is uneven, the short circuit and reflux of fluid can be effectively prevented
Phenomenon.
(4) present invention can enhance heat convection herein, further change in the more apertures in place more than reception solar irradiation
The problem of kind thermal stress distribution unevenness.
(5) present apparatus can be applied not only to flat type solar heat collector and electron tubes type solar thermal collector, may be used also
To be applied to the focusing solar collectors such as trough type solar heat-collector.
(6) operating procedure that aperture is carried out on heat dump is simple, low in cost, fabricates convenient for high-volume.
Heat dump of the present invention has collector area big, and heat exchange efficiency is high, and long service life has a wide range of application, and makes
Make the advantages that the processing is simple.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention using the heat collector of aperture heat dump；
Fig. 2 is the part heat dump structural schematic diagram using different open-cellular forms；(a) evenly sized single aperture, (b)
The single aperture of uneven size, (c) evenly sized multiple rows of aperture；
Fig. 3 is the structural schematic diagram when present invention is applied to trough type solar heat-collector；
Fig. 4 is the structural schematic diagram when present invention is applied to electron tubes type solar thermal collector.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples, but embodiments of the present invention are unlimited
In this.
As shown in Figure 1, being coated with coating for selective absorption 6 on 1 outer surface of heat dump, inner surface and each hole wall, select
Property absorber coatings 6 can effectively absorb the sunlight projected on heat dump 1.Sunlight can not only be irradiated to the appearance of heat dump
Face may also pass through the inner surface that each aperture is irradiated to heat dump, while can also be irradiated on hole wall, increase heat dump
Endotherm area.One end of heat dump is opened, and the other end is closed using plug 7.Interlayer one between glass bushing 2 and heat dump
End is opened, and the other end uses sealing device 3, can be sealing ring or seal gasket is closed, heat exchange can be effectively prevented
The reflux and leakage of medium 5.Heat transferring medium 5 enters heat dump 1 from one end that heat dump is opened and carries out heat with 1 inner wall of heat dump
Exchange, flows out between each aperture, and the heat transferring medium 5 of outflow carries out heat exchange in hole wall and 1 outer surface of heat dump again,
Fluid interchange in interlayer between glass bushing 2 and heat dump outer wall is finally flowed out from one end that glass bushing 2 is opened.It improves
The uniformity of convective heat-transfer coefficient and heat dump 1 Temperature Distribution everywhere.Selective transmission coating 4 is applied on the outside of glass bushing 2,
Selectivity can effectively penetrate sunray through coating 4, and emissivity is lower, further reduces the heat loss of thermal-collecting tube.
The aperture of the heat dump 1 can be evenly sized aperture (Fig. 2 a), or the aperture of uneven size
(Fig. 2 b), the shape of aperture can be circle, triangle, rectangle, diamond shape etc. on heat dump 1.The spacing of Kong Yukong can for etc.
Spacing, or unequal spacing.Aperture number of rows can be single (Fig. 2 a), or multiple rows of (Fig. 2 c).Work as use
When the aperture of uneven size, the flow of each aperture outflow is of substantially equal, can send out in flow process to avoid heat transferring medium 5
Raw short circuit phenomenon also avoids heat transferring medium 5 and only flows out in several apertures in the past.It can guarantee heat transferring medium 5 and heat absorption simultaneously
Device carries out sufficient heat exchange.
The thermal-collecting tube can be applied to trough type solar heat-collector (Fig. 3).Heat transferring medium 5 is unvaporized using high temperature resistant
Transparency liquid, the selection of heat dump position of opening receive the lower half periphery of 8 light of condenser in heat dump.Groove type solar thermal-arrest
The heat-collecting temperature of device is higher, and along the circumferential direction Temperature Distribution is very uneven for traditional heat sink device.In heat dump lower half periphery aperture
The inner wall of heat dump upper semi-circle circumferential surface can be made to receive sunray, improve heat dump everywhere the uniformity of Temperature Distribution and
The collecting efficiency of solar thermal collector extends the service life of heat dump.
The thermal-collecting tube can be applied to electron tubes type solar thermal collector (Fig. 4).Applied to electron tubes type solar energy collection
It needs to cover one layer of glass tube 9 again outside thermal-collecting tube when hot device, heat dump position of opening receives the upper of solar radiation in heat dump
Semicircle circumferential surface.It is vacuumized between outer layer glass tube 9 and inner layer glass tube 2, heat transferring medium 5 is changed for the first time inside heat dump
Heat carries out fluid interchange in the interlayer of inner layer glass tube 2 and heat dump outer wall after flowing out from aperture.Outer layer glass tube 9
Scattering and disappearing for heat can be effectively prevented in vacuum interlayer between inner layer glass tube 2, improves the caloric receptivity of heat transferring medium 5.
The thermal-collecting tube can be applied to flat type solar heat collector.It needs to cover on the outside of flat type solar heat collector
Transparent glass cover board, thermal-collecting tube are placed in below transparent glass cover board.Transparent glass cover board can play light transmission and reduce heat loss
Effect.Heat transferring medium 5 uses clear solution, and the position of opening of heat dump is incident on the upper semicircumference of heat dump in sunray
Face can be effectively ensured sunlight and project on heat dump inner wall after passing through hole and heat transferring medium 5, it is each to improve heat dump
The uniformity for locating Temperature Distribution, increases the heat exchange efficiency of heat transferring medium 5.
It is all using made by description of the invention and accompanying drawing content the foregoing is merely the preferred embodiment of the present invention
Several improvement or deformation, being applied directly or indirectly in other relevant technical fields, also should be regarded as protects in patent of the invention
It protects in range.
Claims (10)
1. a kind of solar energy heat collection pipe of the aperture on heat dump, which is characterized in that the thermal-collecting tube includes heat dump (1), heat absorption
Device (1) is set in glass bushing (2), and heat dump (1) is that one end is closed using plug (7), the metal tube that the other end is opened,
Multiple apertures are disposed on heat dump (1), the outer surface of heat dump (1) and inner surface and hole wall are coated with coating for selective absorption
(6), heat transferring medium (5) is flowed into from side, is flowed out from aperture, and sealing device (3) is located at heat transferring medium (5) inlet, setting
It is applied between heat dump (1) and glass bushing (2), on the outside of glass bushing (2) selective through coating (4).
2. according to claim 1 on heat dump aperture solar energy heat collection pipe, which is characterized in that when thermal-collecting tube be plate
Formula or vacuum tube type heat collector, then top half of the position of opening in heat dump (1)；It is needed when electron tubes type solar thermal collector
It covers one layer of glass tube (9) again outside thermal-collecting tube, is vacuumized between outer layer glass tube (9) and inner layer glass tube (2).
3. according to claim 1 on heat dump aperture solar energy heat collection pipe, which is characterized in that when thermal-collecting tube be focus
The heat collector of formula, lower half portion of the position of opening in heat dump (1).
4. according to claim 1 on heat dump aperture solar energy heat collection pipe, which is characterized in that the heat dump (1)
The shape of aperture is circle, ellipse, triangle, rectangle or diamond shape.
5. according to claim 1 on heat dump aperture solar energy heat collection pipe, which is characterized in that the heat dump (1)
The number of upper aperture be it is a plurality of, the number of rows of aperture is single row of holes, double-row hole or multiple rows of hole.
6. according to claim 1 on heat dump aperture solar energy heat collection pipe, which is characterized in that the heat dump (1)
Spacing between upper Kong Yukong is equidistant or unequal spacing.
7. according to claim 1 on heat dump aperture solar energy heat collection pipe, which is characterized in that the heat dump (1)
Upper each pore size is equal or not etc..
8. according to claim 1 on heat dump aperture solar energy heat collection pipe, which is characterized in that the sealing device
It (3) is sealing ring, sealing strip or gasket seal.
9. according to claim 1 on heat dump aperture solar energy heat collection pipe, which is characterized in that the heat transferring medium
It (5) is the heat transferring medium of light-permeable.
10. according to claim 9 on heat dump aperture solar energy heat collection pipe, which is characterized in that the heat transferring medium
It (5) is water, saline solution or alcoholic solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160664.9A CN109357416B (en) | 2018-09-30 | 2018-09-30 | Solar heat collecting tube with holes on heat absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160664.9A CN109357416B (en) | 2018-09-30 | 2018-09-30 | Solar heat collecting tube with holes on heat absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109357416A true CN109357416A (en) | 2019-02-19 |
| CN109357416B CN109357416B (en) | 2024-03-15 |
Family
ID=65348650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811160664.9A Active CN109357416B (en) | 2018-09-30 | 2018-09-30 | Solar heat collecting tube with holes on heat absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109357416B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2773562Y (en) * | 2004-09-17 | 2006-04-19 | 钟汉辉 | Convective circualtion tube of solar water heater |
| CN2842306Y (en) * | 2005-05-23 | 2006-11-29 | 唐绍章 | Solar flatboard type metal light-heat conversion assembly |
| CN101832656A (en) * | 2010-04-21 | 2010-09-15 | 林庆栋 | Solar water heater |
| TWM425255U (en) * | 2011-11-15 | 2012-03-21 | kun-quan Jiang | Tri-pipe deflector type solar vacuum heat collecting tube |
| CN203980693U (en) * | 2014-07-31 | 2014-12-03 | 云南省玉溪市太标太阳能设备有限公司 | With the solar energy air heat collector of thermal-arrest orifice plate |
| CN209569912U (en) * | 2018-09-30 | 2019-11-01 | 天津大学 | A kind of solar energy heat collection pipe of the aperture on heat dump |
-
2018
- 2018-09-30 CN CN201811160664.9A patent/CN109357416B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2773562Y (en) * | 2004-09-17 | 2006-04-19 | 钟汉辉 | Convective circualtion tube of solar water heater |
| CN2842306Y (en) * | 2005-05-23 | 2006-11-29 | 唐绍章 | Solar flatboard type metal light-heat conversion assembly |
| CN101832656A (en) * | 2010-04-21 | 2010-09-15 | 林庆栋 | Solar water heater |
| TWM425255U (en) * | 2011-11-15 | 2012-03-21 | kun-quan Jiang | Tri-pipe deflector type solar vacuum heat collecting tube |
| CN203980693U (en) * | 2014-07-31 | 2014-12-03 | 云南省玉溪市太标太阳能设备有限公司 | With the solar energy air heat collector of thermal-arrest orifice plate |
| CN209569912U (en) * | 2018-09-30 | 2019-11-01 | 天津大学 | A kind of solar energy heat collection pipe of the aperture on heat dump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109357416B (en) | 2024-03-15 |
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