CN102072573A - Solar transparent heat insulation pipe - Google Patents
Solar transparent heat insulation pipe Download PDFInfo
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- CN102072573A CN102072573A CN2011100230512A CN201110023051A CN102072573A CN 102072573 A CN102072573 A CN 102072573A CN 2011100230512 A CN2011100230512 A CN 2011100230512A CN 201110023051 A CN201110023051 A CN 201110023051A CN 102072573 A CN102072573 A CN 102072573A
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- insulating tube
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- transparent insulating
- pipe
- 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
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Abstract
The invention discloses a solar transparent heat insulation pipe, which mainly comprises a heat conducting pipe, wind surf fins, a rubber sealing ring, a suction and exhaust pipe, a sealing cover, a transparent heat insulation pipe and a reflective diaphragm. Through vacuum heat insulation of a single-layer transparent heat insulation pipe, the heat conducting pipe and the fins are directly used for collecting heat of a radiated surface, a heat collection and heat transfer mode that solar radiation energy is collected by a metal heat absorbing coating on a vacuum glass collector pipe in the conventional technical route is changed, a status that various heat conducting pipes are only taken as intermediate heat transfer tools is changed, the intermediate low-effect and redundant heat transfer links are eliminated, and the structure is simplified, so respective heat transfer advantages of various heat conducting pipes can be fully exerted, and various techniques capable of obviously improving heat collecting energy efficiency, such as the wind surf fins, a heat absorbing channels, reflective heat gathering and suboptical blackbody are applied; therefore, the energy efficiency of collecting the solar radiation energy can be greatly improved, and the solar transparent heat insulation pipe has the characteristics of reasonable structural design, simple process, low cost, high reliability, high heat collecting efficiency, small diffusion loss of heat radiation, convenience of installation and use, and suitability for U tube and heat pipe type solar water heaters.
Description
Technical field
The present invention relates to a kind of solar energy heat collection pipe, particularly a kind ofly reach the thermal-collecting tube that can obviously improve the solar radiation energy utilization rate, belong to solar energy utilization field by improving the thermal-collecting tube structure.
Background technology
The solar energy of prior art " water copper heat pipe " thermal-collecting tube and solar energy " U type pipe " thermal-collecting tube all are by the vinyl cover that no hermetically-sealed construction is handled its thermal-arrest section lid to be contained in " vacuum glass " thermal-collecting tube described vacuum glass " thermal-collecting tube is coated with the dual-layer vacuum glass pipe of metal heat absorbing coating for the internal layer outer round surface.
Because, the energy that metal coating absorbs in " vacuum glass collection " heat pipe needs to be delivered in the pipe by the internal layer glass bulb, increased the glass bulb thermal resistance, air by space in the pipe heats the thermal-arrest section of water copper heat pipe or the thermal-arrest section of U type pipe in the low-down free convection mode of heat exchanger effectiveness again, though existing technology has increased the metal heat-conducting circle in glass tube and between heat pipe, match with circle in heat pipe (or U type pipe) cylindrical and the glass bulb respectively, and heat conduction circle and glass bulb and the circularity between heat pipe of matching, concentricity, linearity reaches tolerance in addition, cause and to fit mutually closely, its heat conduction circle just plays the effect that increases heat exchange area, still need lean on air to conduct heat, this reduces rate of heat transfer greatly, and the surface temperature of metal heat absorbing coating increases substantially.Because of the transfer rate of solar radiation energy and the collecting efficiency of heat collector, rising with the illuminated surface temperature of heat collector reduces, causing the absorption transformation efficiency to solar radiation energy is that the overall thermal efficiency reduces, and the high more then thermal diffusion loss of coating surface temperature is also big more.
The radiation absorptance α maximum of existing " vacuum glass " thermal-collecting tube can reach 92%, has reached limiting value substantially.Be subjected to the restriction of metal spraying technology because of its inner tube outer round surface metal heat absorbing coating thickness, just as electroplating the technological problems that bed thickness exists, bed thickness one will come off by peeling greatly, heat absorbing coating is visual can be seen all that obvious light leakage phenomenon but can't solve and remedy so cash belongs to, so the further upward mobility of α value is little.
Summary of the invention
The objective of the invention is in order to overcome the weak point of above-mentioned solar energy " water copper heat pipe " thermal-collecting tube and solar energy " U type pipe " thermal-collecting tube, design a kind of thermal-arrest usefulness that can give full play to thermal-collecting tube, particularly be fit to the equipped use of class solar water heaters such as " U type pipe " formula and " heat pipe " formula, being fit to each department installs, and it is rational in infrastructure, technology is simple, is easy to the solar energy " transparent insulating tube " of the high-reliability of people's batch process.
Solar energy of the present invention " transparent insulating tube ", its structure mainly comprises heat pipe, canvas-type fin, rubber seal, pump drainage tracheae, seal cover, transparent insulating tube and retroreflective sheeting, described pump drainage tracheae is embedded on the seal cover, described rubber seal is installed on the seal cover, described canvas-type fin is installed on the thermal-arrest section of heat pipe, described seal cover is installed in the nearly canvas-type fin place, top of heat pipe, and the thermal-arrest section that described seal cover will be equipped with the heat pipe of fin is encapsulated in the transparent insulating tube.
Described retroreflective sheeting sticks on the outer surface of shady face of transparent insulating tube, and described retroreflective sheeting is selected specular aluminium diaphragm or minute surface pet (terylene) diaphragm for use.
Described heat pipe is selected " heat pipe " or " U " type pipe for use.Described seal cover is selected single seal cover or double density capping for use, and described seal cover is selected phenolic aldehyde (bakelite) for use or strengthened nylon or strengthen PP injection moulding processing.
Described transparent insulating tube is that solar radiation energy can penetrate insulating tube housing direct irradiation at the single-layer and transparent insulating tube or the double-layer transparent glass insulating tube that are used to collect on the canvas-type fin of emittance, described transparent insulating tube exterior cross-section is selected circle or subtended angle circular configuration for use, i.e. the subtended angle structure that rises from circular both sides arranged outside.
Describedly select for use the installation of single-layer and transparent insulating tube to select for use the pump drainage tracheae of inlaying on single seal cover to vacuumize, realize the vacuum seal insulation of single hull, described single-layer and transparent insulating tube is selected plastics Pc or the processing of PMMO alloy for use, or selects glass processing for use.
The transparent insulating tube of described Pc of selecting for use or PMMO alloy and the installation of seal cover or select plastic hot melt welding procedure melting welding sealing for use.
Described canvas-type fin is the canvas-type fin that centrosymmetric arc sail constitutes, described canvas-type fin is selected two-sided canvas-type fin or single face canvas-type fin for use, be equipped with on Rangoon, outside face of the face of Rangoon everywhere of described canvas-type fin and sail with fin is the radial saw profile of tooth heat absorption conduit of one, select sandblast for use on Rangoon face of described fin or select for use the chemical attack processing to become dull surface, described dull surface selects for use electrification to be processed into dark surface.
" transparent insulating tube " of the present invention vacuumizes insulation and retroreflective sheeting by being equipped with at transparent insulating tube, the effective collector area of single tube is increased greatly, the radiation of thermal-arrest fin shady face is reflected back, has reduced the heat radiation divergence loss, improved overall heat-insulating property and solar collecting performance.Because, light increases with the increase reflected intensity of incidence angle, causing circular glass-tube dual-side is that the light of glass shell body thickness area is reflected away, increase the subtended angle clear glass sleeve pipe of 2mm～2.5mm refractive power subtended angle on the every limit of clear glass sleeve pipe, the emittance of injecting is through the reflective focusing of retroreflective sheeting, then this partial radiation energy will be fully used, compare " vacuum glass " thermal-collecting tube with caliber, increased the active set hot side collection (metal heat absorbing coating or thermal-arrest fin to the width on subtended angle limit increases 12mm) of irradiation face, by criterion calculation, will bring up to 86% by 65% of existing " vacuum glass " thermal-collecting tube by the effective area utilization rate of the heat collector irradiation face of 20 thermal-collecting tubes assemblings.
Pc, Ps and PMMO three big transparent plastics have infrared ray and the big characteristics of ultraviolet transmittance τ, greater than glass, select for use the single-layer and transparent insulating tube of the PMMO plastic alloy processing of Pc or modification will make the thermal-arrest fin obtain more thermal energy; Pc and PMMO plastic alloy have the mechanical strength much larger than glass simultaneously, so can reduce the thickness of shell of insulating tube relatively, have further improved radiation transmission and have compared τ.The installation of itself and seal cover can be selected plastic hot melt welding procedure melting welding sealing for use, has the advantages that vacuum encapsulation process is simple, reliability is high.
Because transparent insulating tube need not the spray metal heat absorbing coating, simplified the glass bulb production technology, avoided scrapping because of the defective products that the unequal processing quality problem of coating thickness causes, reduced cost significantly, particularly the cost of single-layer and transparent glass heat-insulating pipe only needs 35% of " vacuum glass " thermal-collecting tube, and every square meter price of the retroreflective sheeting that increases is not more than 10 yuan, and φ 58 * 1800mm pipe only needs 0.16M
2So, have that technology is simple, cost reduces, be fit to produce in enormous quantities the characteristics of use.
The radiation absorptance α of existing " vacuum glass " thermal-collecting tube can reach 92%, has reached limiting value substantially.And transparent insulating tube makes its interior thermal-arrest fin obtain the function of direct collection solar radiation energy, can enable obviously to improve the zigzag heat absorption conduit of fin surface radiation absorptance α value and through inferior light, blackout is processed into so-called black-body surface acquisition utilization, and (zigzag heat absorption conduit is absorbed the emittance that projects on the conduit one side by secondary at this face when part is reflected to another side, even the radiation of material surface absorbs α and reaches 80% than only, surplus 20% total absorptance α value after the another side secondary absorbs still up to 96%, after the surperficial black matrix processing of what is called, then will further improve again.Because of in theory only the α value of black-body surface can reach 1.), radiation absorptance α can be brought up to more than 96% at least.
Solar energy " transparent insulating tube " is gone up employed every technical measures can both obviously improve corresponding usefulness, produces tangible technique effect.By adopting the vacuum heat-preserving of single-layer and transparent insulating tube, realized the heat pipe fin directly as the thermal-arrest mode of irradiation face, changed the method that the prior art route all need be collected solar radiation energy by the metal heat absorbing coating of " vacuum glass " thermal-collecting tube, change all kinds of heat pipes just as the state of heat transfer instrument in the middle of, eliminated the unnecessary heat transfer link of middle poor efficiency, transmit advantage so can give full play to all kinds of heat pipes heat separately, and make the canvas-type fin, the heat absorption conduit, the multinomial technology that can obviously improve the thermal-arrest efficiency such as reflection heat build-up and inferior light black matrix find application, improve emittance absorptance α, significantly improved the efficient of collecting solar radiation energy.Have reasonable in design, technology is simple, cost is low, reliability is high, collecting efficiency is high, the heat radiation divergence loss is little, and easy to install, be fit to the characteristics that " U type pipe " and class solar water heaters such as " heat pipe-types " are equipped with use.
Description of drawings
Accompanying drawing 1 is a kind of structural representation in the embodiments of the invention;
Accompanying drawing 2 is the another kind of structural representations in the embodiments of the invention;
Accompanying drawing 4 is transparent insulating tube cross section structure schematic diagrames of the present invention;
Accompanying drawing 5 is irradiation projected area schematic diagrames of the present invention.
In the accompanying drawing 1: the 1st, transparent insulating tube, the 2nd, the canvas-type fin, the 3rd, rubber seal, the 4th, the seal cover of double density capping formula, the 5th, pump drainage tracheae, the 6th, the heat pipe of " heat pipe " formula, the 7th, the thermal-arrest section of heat pipe, the 8th, retroreflective sheeting, A are the center lines of solar energy " transparent insulating tube ", and the center line left side is a half sectional view.
In the accompanying drawing 2: last figure, the 1st, transparent insulating tube, the 2nd, canvas-type fin, the 3rd, rubber seal, the 4th, the seal cover of single seal cover formula, the 5th, pump drainage tracheae, 6A are the heat pipes of " U type pipe " formula, the 7th, the thermal-arrest section of heat pipe, A is a center line, the center line left side is a half sectional view; Figure below is a kind of rubber seal coil structures, wherein: the 3rd, rubber seal, 3A convex tendon.
In the accompanying drawing 3: the 9th, two-sided canvas-type fin, the 10th, single face canvas-type fin, the 11st, Rangoon face, the 12nd, the local profile of tooth enlarged drawing of radial saw profile of tooth conduit.
In the accompanying drawing 4: A figure is a circular cross-section, and B figure is the subtended angle circular configuration, the 1st, and single-layer and transparent insulating tube, 1A are the refractive power subtended angles, the 8th, retroreflective sheeting.
In the accompanying drawing 5: 45 ° and 48 ° all is sun altitudes, the 1st, and single-layer and transparent insulating tube, 1A are the refractive power subtended angles, the 8th, retroreflective sheeting, 45 ° of β are maximum sail length angles of fin, and h1 is the distance between the reflective membrane of two pipes, and h2 is the distance between two fins; H3 is the centre-to-centre spacing between two pipes.
The specific embodiment
Accompanying drawing is to be example with solar energy " transparent insulating tube ", non-limitingly discloses the specific embodiment among the present invention, and is suitable equally for the solar energy heat collection pipe of the tubular structure of other type.In conjunction with the accompanying drawings the present invention is further described as follows.
Referring to attached Fig. 1 and 2, solar energy of the present invention " transparent insulating tube ", its structure mainly comprises transparent insulating tube 1, canvas-type fin 2, rubber seal 3, seal cover 4 (or 4A), pump drainage tracheae 5, heat pipe 6 (or 6A) and retroreflective sheeting 8, described pump drainage tracheae 5 is embedded on the seal cover 4 (or 4A), described rubber seal 3 is installed on the seal cover 4 (or 4A), described canvas-type fin 2 is installed on the thermal-arrest section 7 of heat pipe 6 (or 6A), described seal cover 4 (or 4A) is installed in nearly canvas-type fin 2 places, top of heat pipe 6 (or 6A), and the thermal-arrest section that described seal cover 4 (or 4A) will be equipped with the heat pipe of fin 2 is encapsulated in the transparent insulating tube 1.
Described retroreflective sheeting 8 sticks on the outer surface of shady face of transparent insulating tube 1, and described retroreflective sheeting 8 is selected specular aluminium diaphragm or minute surface pet (terylene) diaphragm for use.
Described heat pipe is selected " heat pipe " 6 or " U " type pipe 6A for use.Described seal cover is selected single seal cover 4A or double density capping 4 for use, and described seal cover is selected phenolic aldehyde (bakelite) for use or strengthened nylon or strengthen PP injection moulding processing.
Referring to accompanying drawing 4, described transparent insulating tube 1 can penetrate insulating tube housing direct irradiation at the single-layer and transparent insulating tube (A and B) or the double-layer transparent glass insulating tube that are used to collect on the canvas-type fin 2 of emittance for solar radiation energy, described transparent insulating tube exterior cross-section is selected circle (A figure) or subtended angle circular configuration (B figure) for use, i.e. the refractive power subtended angle structure 1A that rises from circular both sides arranged outside.
Describedly select for use the installation of single-layer and transparent insulating tube 1 to select for use the pump drainage tracheae of inlaying on the seal cover 4 (or 4A) to vacuumize, realize the vacuum seal insulation of single hull, described single-layer and transparent insulating tube 1 is selected plastics Pc or the processing of PMMO alloy for use, or selects glass processing for use.
The installation of described seal cover and transparent insulating tube can add with suitable " 702 " or " 704 " silica gel to improve the reliability of bond strength and sealing at sealing part, and the transparent insulating tube 1 of described Pc of selecting for use or PMMO alloy is with the installation of seal cover 4 (or 4A) or select plastic hot melt welding procedure melting welding sealing for use.
Referring to accompanying drawing 3, described canvas-type fin 2 is the canvas-type fin that centrosymmetric arc sail constitutes, described canvas-type fin 2 is selected two-sided canvas-type fin 9 or single face canvas-type fin 10 for use, be equipped with on the face 11 of Rangoon everywhere of described canvas-type fin 2 and Rangoon, the outside face 11 of sail with fin is the radial saw profile of tooth heat absorption conduit 12 of one, select sandblast for use on Rangoon face 11 of described fin or select for use the chemical attack processing to become dull surface, described dull surface is selected for use electrification to be processed into dark surface and is formed so-called black-body surface structure.
Referring to 5,45 ° in accompanying drawing is the short sun altitude α of sail length of fin, and 48 ° is the sun altitude α after the sail length of fin increases, and 45 ° of β are maximum sail length angle β of fin.When in the figure viewed from behind end of the sun pre-irradiation pipe generation back pipe being blocked, as long as sail fin angle β 〉=90 °-α, the canvas-type fin all obtains the orthographic projection of solar radiation after blocking end.Solar radiation is through refractive power subtended angle 31 refractions of single-layer and transparent insulating tube 2, the reflection and the optically focused effect of retroreflective sheeting 14, focus on the thermal-arrest fin, the arc of its fin sail becomes concentric circles with insulating tube, the R radius changes with caliber, be equivalent to the heat absorbing coating caliber in " vacuum glass " thermal-collecting tube, promptly constitute full circle shape fin when two-sided sail extends connection mutually; The single face sail extends mutually and promptly constitutes semicircle fin, and equal substantially under the identical condition of external diameter of pipe.H3 is the centre-to-centre spacing between two pipes, h1 is the distance between the retroreflective sheeting of two glass tubes, h2 is the distance between two fins, is equal to the space length between the heat absorbing coating of two vacuum glass heat collection tubes, has shown among the figure that sail fin, insulating tube and retroreflective sheeting are to improving the effect of effective collector area.
It should be noted that at last: obviously, the foregoing description only is for example of the present invention clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among protection scope of the present invention.
Claims (9)
1. a solar energy " transparent insulating tube ", structure mainly comprises heat pipe, canvas-type fin, rubber seal, pump drainage tracheae, seal cover and retroreflective sheeting, its feature also is to comprise transparent insulating tube, and the thermal-arrest section that described seal cover will be equipped with the heat pipe of canvas-type fin is encapsulated in the transparent insulating tube.
2. solar energy as claimed in claim 1 " transparent insulating tube ", its feature are that also described transparent insulating tube exterior cross-section is selected circle or subtended angle circular configuration for use.
3. solar energy as claimed in claim 1 " transparent insulating tube ", its feature also is, described transparent insulating tube is that solar radiation energy can penetrate insulating tube housing direct irradiation at the single-layer and transparent insulating tube or the double-layer transparent glass insulating tube that are used to collect on the canvas-type fin of emittance.
4. solar energy as claimed in claim 3 " transparent insulating tube ", its feature also is, describedly selects for use the installation of single-layer and transparent insulating tube to select for use the pump drainage tracheae of inlaying on single seal cover to vacuumize, and realizes the vacuum seal insulation of single hull.
5. solar energy as claimed in claim 3 " transparent insulating tube ", its feature are that also described single-layer and transparent insulating tube is selected plastics Pc or the processing of PMMO alloy for use, or selects glass processing for use.
6. solar energy as claimed in claim 1 " transparent insulating tube ", its feature also is, described retroreflective sheeting sticks on the outer surface of shady face of transparent insulating tube.
7. as claim 1 or 6 described solar energy " transparent insulating tube ", its feature is that also described retroreflective sheeting is selected specular aluminium diaphragm or minute surface pet (terylene) diaphragm for use.
8. solar energy as claimed in claim 5 " transparent insulating tube ", its feature also is, the transparent insulating tube of described Pc of selecting for use or PMMO alloy and the installation of seal cover or select plastic hot melt welding procedure melting welding sealing for use.
9. as claim 1 or 8 described solar energy " transparent insulating tube ", its feature is that also described seal cover is selected single seal cover or double density capping for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100230512A CN102072573A (en) | 2011-01-20 | 2011-01-20 | Solar transparent heat insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100230512A CN102072573A (en) | 2011-01-20 | 2011-01-20 | Solar transparent heat insulation pipe |
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| Publication Number | Publication Date |
|---|---|
| CN102072573A true CN102072573A (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100230512A Pending CN102072573A (en) | 2011-01-20 | 2011-01-20 | Solar transparent heat insulation pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11225907B2 (en) | 2016-02-11 | 2022-01-18 | General Electric Company | Gas turbine engine pipe cover |
-
2011
- 2011-01-20 CN CN2011100230512A patent/CN102072573A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11225907B2 (en) | 2016-02-11 | 2022-01-18 | General Electric Company | Gas turbine engine pipe cover |
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Application publication date: 20110525 |