CN104819585A - Silk screen-inserted flowing type improved solar heat collecting tube and control method - Google Patents
Silk screen-inserted flowing type improved solar heat collecting tube and control method Download PDFInfo
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- CN104819585A CN104819585A CN201510126022.7A CN201510126022A CN104819585A CN 104819585 A CN104819585 A CN 104819585A CN 201510126022 A CN201510126022 A CN 201510126022A CN 104819585 A CN104819585 A CN 104819585A
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- tube
- silk screen
- endothermic tube
- screen
- endothermic
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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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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a silk screen-inserted flowing type improved solar heat collecting tube and a control method. The silk screen-inserted flowing type improved solar heat collecting tube comprises an inlet connecting tube, a corrugated tube, an alloy sealing ring, a vacuum glass tube, a heat absorbing tube, a fixed ring, a bolt connecting head, a conical shunt cavity, a silk screen connecting hole, a silk screen, a positioning ferrule, a thread hole, a super-hydrophobic surface coating layer, a super-hydrophilic surface coating layer, a vacuum extraction opening, a positioning ring rib, an outlet connecting tube and a selective absorbing coating layer. The positioning ring rib is arranged in the heat absorbing tube, and is in threaded connection with the bolt connecting head for fixing the silk screen structure; the super-hydrophobic surface coating treatment is performed for the outer surface of the annular silk screen structure, and the super-hydrophilic surface coating treatment is performed for the internal surface of the heat absorbing tube, so that steam formed in the heat exchange process is absorbed in the silk screen, and condensed liquid is extruded outside the silk screen to infiltrate the heat absorbing tube; the gas-liquid two-phase flow separation is formed; the flowing pattern in the heat collecting tube is improved; and the intensified heat transfer effect is achieved.
Description
Technical field
The present invention relates to the improved-type solar energy heat collection pipe of a kind of interpolation silk screen flow pattern and regulate and control method, belong to solar energy utilization technique field.
Background technology
Augmentation of heat transfer research is paid attention to always widely, and in the scientific domain of countries in the world, relevant augmentation of heat transfer research report is lifted and is unequal to number.Show the hot equipment of all kinds of high-performance of Design and manufacture, the sophisticated technology such as Aeronautics and Astronautics and nuclear fusion, the effective cooling of computer intensive arranging electronic element.
The flow constraint of heat-transfer fluid is in the passage of a fixed structure and shape, insert structure and the different insert of function in passage, can the flowing flow pattern of alter, and then improve heat-transfer capability, thus in pipe, insert becomes the hot fields of augmentation of heat transfer research.Interpositioning conventional at present has twisted strip structure, static mixer structure, long direction eddy generator, spiral winding, helical spring, loose structure, lap-ups silk structure etc.
On the other hand, by micro--Na process for modifying surface augmentation of heat transfer as a brand-new research field, obtained worldwide extensive attention, the research work of a collection of initiative has proved that surface modification is a kind of augmentation of heat transfer means having prospect.Along with going deep into of research, the impact of surface wettability on bubble dynamics process and heat transfer is paid attention to gradually.A large amount of experiments is also verified, by changing the micro-nano structure on surface, brings the change of surface topography and chemical property to be feasible to cause the change of surface wettability.
Vacuum heat collection pipe, as photothermal deformation parts, combinationally uses with paraboloid groove type condenser, forms parabolic trough collector, can provide heat energy for solar energy thermal-power-generating, solar seawater desalination, solar airconditioning, industrial production etc.
Summary of the invention
The object of the invention is to application sets heat pipe interpolation screen net structure flow pattern and improve heat transfer enhancement technology, emerging technology is applied to industry actual simultaneously, the improved-type solar energy heat collection pipe of a kind of interpolation silk screen flow pattern and regulate and control method are provided.
For achieving the above object, the present invention is by the following technical solutions:
The straight way type solar collector tube of interpolation screen net structure comprises entrance tube connector, bellows, alloy sealing ring, glass tube with vacuum, endothermic tube, retainer ring, bolt connector, tapered shunting chamber, silk screen connecting hole, silk screen, positioning sleeve, screwed hole, vacuum pumping opening, locating ring rib, outlet connecting pipe; The two ends of endothermic tube are welded to connect with entrance tube connector and outlet connecting pipe respectively through bellows; Glass tube with vacuum coaxial sleeve is on endothermic tube, and its two ends are sealed with bellows-welding respectively by alloy sealing ring, and glass tube with vacuum is provided with vacuum pumping opening; The inner side of the entrance point of entrance tube connector and the port of export of outlet connecting pipe is welded with locating ring rib respectively; Tapered shunting chamber and positioning sleeve are respectively equipped with silk screen connecting hole, and silk screen two ends are sewed up by silk screen connecting hole and are connected with positioning sleeve with tapered shunting chamber respectively; One end and the tapered shunting chamber of bolt connector are welded to connect; The center of retainer ring is provided with screwed hole, and the other end of bolt connector is fixed by screwed hole and retainer ring; Silk screen to be connected with the locating ring rib in outlet connecting pipe by retainer ring and positioning sleeve and entrance tube connector and to realize coaxially fixing with endothermic tube.
Described endothermic tube inner surface is coated with ultra-hydrophilic surface coating, and outer surface is coated with selective absorption coating.Described screen diameter should be less than less than 100 microns, and its outer surface is coated with super-hydrophobic surface coating.
The improved-type flow pattern ameliorative way of structure based on surface modification is: sunshine after optically focused through glass tube with vacuum, major part luminous energy is that heat energy is inner through endothermic tube heating endothermic tube by the coating for selective absorption sorption enhanced of endothermic tube outer surface, condensed water is shunted through tapered shunting chamber after entrance tube connector enters endothermic tube, makes condensed water carry out flowing and ebuillition of heated generation steam along the annular space between endothermic tube and endless screen.Endless screen structural outer surface carries out hydrophobic treatment by super-hydrophobic surface coating, endothermic tube inside adopts ultra-hydrophilic surface coating to carry out hydrophilic treated, because surface tension effect makes flow direction endothermic tube side, steam then flows to endless screen side, formation biphase gas and liquid flow is separated, improve flow pattern, steam finally flows into mesh inner.When biphase gas and liquid flow flow to locating ring rib, locating ring rib intercepts condensed fluid, and the steam of generation is discharged from endothermic tube through outlet connecting pipe.
When the present invention carries out flow boiling by condensed water in endothermic tube, carry out silk screen integral arrangement in endothermic tube inside, regulation and control flow pattern; Meanwhile, by the super-hydrophobic process of silk screen outer surface, endothermic tube inner surface surpasses hydrophilic treated, endothermic tube inside is infiltrated more abundant, flow pattern, close to annular flow, strengthens boiling heat transfer in endothermic tube, make intraductal heat transfer condition improved, form a kind of new flow pattern regulate and control method.
Accompanying drawing explanation
Fig. 1 is the improved-type solar energy heat collection pipe structural representation of interpolation silk screen flow pattern;
Fig. 2 is interpolation silk screen flow pattern improved-type solar energy heat collection pipe A-A sectional view;
Fig. 3 is interpolation silk screen overall structure schematic diagram of the present invention;
Fig. 4 is endothermic tube structural representation of the present invention;
In figure: entrance tube connector 1, bellows 2, alloy sealing ring 3, glass tube with vacuum 4, endothermic tube 5, retainer ring 6, bolt connector 7, tapered shunting chamber 8, silk screen connecting hole 9, silk screen 10, positioning sleeve 11, screwed hole 12, super-hydrophobic surface coating 13, ultra-hydrophilic surface coating 14, vacuum pumping opening 15, locating ring rib 16, outlet connecting pipe 17, coating for selective absorption 18.
Detailed description of the invention
As shown in the figure, the improved-type solar energy heat collection pipe of interpolation silk screen flow pattern comprises entrance tube connector 1, bellows 2, alloy sealing ring 3, glass tube with vacuum 4, endothermic tube 5, retainer ring 6, bolt connector 7, tapered shunting chamber 8, silk screen connecting hole 9, silk screen 10, positioning sleeve 11, screwed hole 12, vacuum pumping opening 15, locating ring rib 16, outlet connecting pipe 17; The two ends of endothermic tube 5 are welded to connect with entrance tube connector 1 and outlet connecting pipe 17 respectively through bellows 2; Glass tube with vacuum 4 coaxial sleeve on endothermic tube 5, its two ends by alloy sealing ring 3 respectively with bellows 2 welded seal, glass tube with vacuum 4 is provided with vacuum pumping opening 15; The inner side of the entrance point of entrance tube connector 1 and the port of export of outlet connecting pipe 17 is welded with locating ring rib 16 respectively; Tapered shunting chamber 8 and positioning sleeve 11 are respectively equipped with silk screen connecting hole 9, and silk screen 10 two ends are sewed up by silk screen connecting hole 9 and are connected with positioning sleeve 11 with tapered shunting chamber 8 respectively; One end and the tapered shunting chamber 8 of bolt connector 7 are welded to connect; The center of retainer ring 6 is provided with screwed hole 12, and the other end of bolt connector 7 is fixed by screwed hole 12 and retainer ring 6; Silk screen 10 to be connected with the locating ring rib 16 in outlet connecting pipe 17 by retainer ring 6 and positioning sleeve 11 and entrance tube connector 1 and to realize coaxially fixing with endothermic tube 5.
Described endothermic tube 5 inner surface is coated with ultra-hydrophilic surface coating 14, and outer surface is coated with selective absorption coating 18.Described silk screen 10 aperture should be less than less than 100 microns, and its outer surface is coated with super-hydrophobic surface coating 13.
The improved-type flow pattern ameliorative way of structure based on surface modification is: sunshine after optically focused through glass tube with vacuum 4, major part luminous energy is that heat energy heats endothermic tube inside through endothermic tube 5 by coating for selective absorption 18 sorption enhanced of endothermic tube 5 outer surface, condensed water is shunted through tapered shunting chamber 8 after entrance tube connector 1 enters endothermic tube 5, makes condensed water carry out flowing along the annular space between endothermic tube 5 and endless screen 10 and ebuillition of heated produces steam.Endless screen 10 structural outer surface carries out hydrophobic treatment by super-hydrophobic surface coating 13, endothermic tube 5 inside adopts ultra-hydrophilic surface coating 14 to carry out hydrophilic treated, because surface tension effect makes flow direction endothermic tube 5 side, steam then flows to endless screen 10 side, formation biphase gas and liquid flow is separated, improve flow pattern, it is inner that steam finally flows into silk screen 10.When biphase gas and liquid flow flow to locating ring rib 16, locating ring rib 16 pairs of condensed fluids intercept, and the steam of generation is discharged from endothermic tube 5 through outlet connecting pipe 17.
The straight way type solar collector tube internal flow pattern regulation and control of interpolation screen net structure are as follows with diabatic process: sunshine is by condenser mirror through glass tube with vacuum, and most of luminous energy is heat energy by endothermic tube sorption enhanced, heats the condensed water in endothermic tube.Condensed water is heated after entrance tube connector enters endothermic tube, is heated and carries out flow boiling in endothermic tube, and when mixed gas-liquid flow is to tapered shunting cavity configuration, tapered shunting chamber convection changes, and makes gas-liquid mixed flow to tapered shunting chamber outside; When flowing to screen net structure, because endless screen structural outer surface adopts super-hydrophobic surface coating process, endothermic tube interior surface adopts the process of ultra-hydrophilic surface coating, and then causing the steam formed in heat transfer process to aspirate into mesh inner, condensed fluid is squeezed to silk screen outside, infiltrates endothermic tube inner, formation biphase gas and liquid flow is separated, when biphase gas and liquid flow flow to locating ring rib, locating ring rib intercepts condensed fluid, and the steam of generation is discharged from endothermic tube through outlet connecting pipe.
The present invention is improved emerging pipe interposer flow pattern and heat transfer enhancement technology is introduced in solar energy heat collector.By the process to endothermic tube inner structure, flow boiling patterns in regulation and control endothermic tube, reaches the effect of augmentation of heat transfer; Simultaneously, micro-for surface-Na modification technology being introduced in solar energy heat collector, by modifying silk screen and endothermic tube surface, changing its wellability, enhanced boiling heat transfer is carried out on the surface obtaining having excellent boiling performance, is Beneficial scientific research cutting edge technology being introduced industrial practical application.Improve flowing and the heat transfer boundary condition of thermal-collecting tube entirety.
Claims (7)
1. the improved-type solar energy heat collection pipe of interpolation silk screen flow pattern, is characterized in that comprising entrance tube connector (1), bellows (2), alloy sealing ring (3), glass tube with vacuum (4), endothermic tube (5), retainer ring (6), bolt connector (7), tapered shunting chamber (8), silk screen connecting hole (9), silk screen (10), positioning sleeve (11), screwed hole (12), vacuum pumping opening (15), locating ring rib (16), outlet connecting pipe (17); The two ends of endothermic tube (5) are welded to connect with entrance tube connector (1) and outlet connecting pipe (17) respectively through bellows (2); Glass tube with vacuum (4) coaxial sleeve on endothermic tube (5), its two ends by alloy sealing ring (3) respectively with bellows (2) welded seal, glass tube with vacuum (4) is provided with vacuum pumping opening (15); The inner side of the entrance point of entrance tube connector (1) and the port of export of outlet connecting pipe (17) is welded with locating ring rib (16) respectively; Tapered shunting chamber (8) and positioning sleeve (11) are respectively equipped with silk screen connecting hole (9), and silk screen (10) two ends are sewed up by silk screen connecting hole (9) and are connected with positioning sleeve (11) with tapered shunting chamber (8) respectively; One end and tapered shunting chamber (8) of bolt connector (7) are welded to connect; The center of retainer ring (6) is provided with screwed hole (12), and the other end of bolt connector (7) is fixed by screwed hole (12) and retainer ring (6); Silk screen (10) to be connected with the locating ring rib (16) in outlet connecting pipe (17) by retainer ring (6) and positioning sleeve (11) and entrance tube connector (1) and to realize coaxially fixing with endothermic tube (5).
2. the straight way type solar collector tube of interpolation screen net structure according to claim 1, it is characterized in that described endothermic tube (5) inner surface is coated with ultra-hydrophilic surface coating (14), outer surface is coated with selective absorption coating (18).
3. the straight way type solar collector tube of interpolation screen net structure according to claim 1, it is characterized in that described silk screen (10) aperture should be less than less than 100 microns, its outer surface is coated with super-hydrophobic surface coating (13).
4. the straight way type solar collector tube of interpolation screen net structure according to claim 1, it is characterized in that described its extension diameter of positioning sleeve (11) D1 is equal with thermal-collecting tube internal diameter, inside diametrically D2 is identical with silk screen (10) internal diameter.
5. the straight way type solar collector tube of interpolation screen net structure according to claim 1, is characterized in that the outer diameter D 1 of described retainer ring (6) is equal with thermal-collecting tube internal diameter.
6. the straight way type solar collector tube of interpolation screen net structure according to claim 1, is characterized in that the height of described locating ring rib (16) is for (D1-D2)/2.
7. implement the flow pattern regulate and control method of the improved-type solar energy heat collection pipe of interpolation silk screen flow pattern as claimed in claim 1 for one kind, it is characterized in that: sunshine after optically focused through glass tube with vacuum (4), major part luminous energy is that heat energy is inner through endothermic tube (5) heating endothermic tube by coating for selective absorption (18) sorption enhanced of endothermic tube (5) outer surface, condensed water enters endothermic tube (5) from entrance tube connector (1) and shunts by tapered shunting chamber (8), condensed water is made to carry out flowing along the annular space between endothermic tube (5) and endless screen (10) and ebuillition of heated produces steam, endless screen (10) structural outer surface carries out hydrophobic treatment by super-hydrophobic surface coating (13), endothermic tube (5) inside adopts ultra-hydrophilic surface coating (14) to carry out hydrophilic treated, because surface tension effect makes flow direction endothermic tube (5) side, steam then flows to endless screen (10) side, formation biphase gas and liquid flow is separated, improve flow pattern, it is inner that steam finally flows into silk screen (10), when biphase gas and liquid flow flow to locating ring rib (16), locating ring rib (16) intercepts condensed fluid, and the steam of generation is discharged from endothermic tube (5) through outlet connecting pipe (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510126022.7A CN104819585B (en) | 2015-03-23 | 2015-03-23 | A kind of interpolation improved-type solar energy heat collection pipe of silk screen flow pattern and regulation and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510126022.7A CN104819585B (en) | 2015-03-23 | 2015-03-23 | A kind of interpolation improved-type solar energy heat collection pipe of silk screen flow pattern and regulation and control method |
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| Publication Number | Publication Date |
|---|---|
| CN104819585A true CN104819585A (en) | 2015-08-05 |
| CN104819585B CN104819585B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510126022.7A Expired - Fee Related CN104819585B (en) | 2015-03-23 | 2015-03-23 | A kind of interpolation improved-type solar energy heat collection pipe of silk screen flow pattern and regulation and control method |
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| CN (1) | CN104819585B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895676A (en) * | 2018-07-26 | 2018-11-27 | 天津大学 | A kind of built-in porous media trough type solar heat-collector of augmentation of heat transfer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3014836A1 (en) * | 1979-04-17 | 1980-11-06 | Emil Baechli | HEAT TRANSFER SYSTEM |
| JPS58178151A (en) * | 1982-04-13 | 1983-10-19 | Matsushita Electric Ind Co Ltd | Solar heat collecting device |
| CN103335427A (en) * | 2013-07-02 | 2013-10-02 | 中国科学院工程热物理研究所 | Groove type solar direct steam heat collecting pipe |
| CN103940110A (en) * | 2014-04-14 | 2014-07-23 | 浙江大学 | Boiling heat transfer improved type straight-through type natural circulating solar heat collection tube and method |
| CN103940126A (en) * | 2014-04-14 | 2014-07-23 | 浙江大学 | Natural circulation solar loop type heat collecting pipe based on heat transfer modified surface and method |
| CN104132575A (en) * | 2014-07-17 | 2014-11-05 | 华北电力大学 | Heat transfer enhancement tube with taper screen meshes inserted internally |
| CN204648716U (en) * | 2015-03-23 | 2015-09-16 | 浙江大学 | The improved-type solar energy heat collection pipe of a kind of interpolation silk screen flow pattern |
-
2015
- 2015-03-23 CN CN201510126022.7A patent/CN104819585B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3014836A1 (en) * | 1979-04-17 | 1980-11-06 | Emil Baechli | HEAT TRANSFER SYSTEM |
| JPS58178151A (en) * | 1982-04-13 | 1983-10-19 | Matsushita Electric Ind Co Ltd | Solar heat collecting device |
| CN103335427A (en) * | 2013-07-02 | 2013-10-02 | 中国科学院工程热物理研究所 | Groove type solar direct steam heat collecting pipe |
| CN103940110A (en) * | 2014-04-14 | 2014-07-23 | 浙江大学 | Boiling heat transfer improved type straight-through type natural circulating solar heat collection tube and method |
| CN103940126A (en) * | 2014-04-14 | 2014-07-23 | 浙江大学 | Natural circulation solar loop type heat collecting pipe based on heat transfer modified surface and method |
| CN104132575A (en) * | 2014-07-17 | 2014-11-05 | 华北电力大学 | Heat transfer enhancement tube with taper screen meshes inserted internally |
| CN204648716U (en) * | 2015-03-23 | 2015-09-16 | 浙江大学 | The improved-type solar energy heat collection pipe of a kind of interpolation silk screen flow pattern |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895676A (en) * | 2018-07-26 | 2018-11-27 | 天津大学 | A kind of built-in porous media trough type solar heat-collector of augmentation of heat transfer |
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| CN104819585B (en) | 2016-08-17 |
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Granted publication date: 20160817 Termination date: 20200323 |