CN101387449B - Graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube - Google Patents

Graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube Download PDF

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Publication number
CN101387449B
CN101387449B CN2008102280406A CN200810228040A CN101387449B CN 101387449 B CN101387449 B CN 101387449B CN 2008102280406 A CN2008102280406 A CN 2008102280406A CN 200810228040 A CN200810228040 A CN 200810228040A CN 101387449 B CN101387449 B CN 101387449B
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China
Prior art keywords
tube
glass tube
capillary
graphite
header
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Expired - Fee Related
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CN2008102280406A
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Chinese (zh)
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CN101387449A (en
Inventor
张吉礼
马良栋
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Dalian University of Technology
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Dalian University of Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
    • F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

The invention discloses a graphite filled vacuum glass tube open type capillary solar heat collection tube, which belongs to the field of solar heat collector. The solar heat collection tube is characterized in that the device comprises a header tube, a header connecting tube, liquid distribution and collection tubes, capillary metal tubes, an external glass tube, an internal glass tube, graphitepacking, a thermal insulated seal head, and an elastic support; the graphite packing is compactly packed among the internal glass tube, the capillary metal tubes and the thermal insulated liner tube to reinforce the heat transfer performance; the inner diameter of each capillary metal tube is between 2 and 5 millimeters, and the capillary metal tubes are connected with the liquid distribution andcollection tubes; and water, Freon or other heat transfer media enter the U-shaped capillary metal tubes through the header tube, the header connecting tube and the liquid distribution tube, are heated after absorbing solar energy of the vacuum glass tubes, and then enter the header tube through the liquid collection tube and are discharged so as to complete the process of solar heat collection, working media heating and heat conveying. The graphite filled vacuum glass tube open type capillary solar heat collection tube has the advantages that a plurality of capillary tubes increase the heat exchange area of the working media and improve the heat transfer performance of the heat collection tube; and simultaneously the heat supply temperature of the heat collection tube is increased.

Description

Graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube
Technical field
The invention belongs to field of solar collectors, relate to and utilize many U type metal capillaries to realize bearing capacity height, collecting efficiency height, the solar collection element that heat exchange property is good.
Background technology
Solar thermal collector is the key equipment of various solar energy utilization system, and solar energy heat collection pipe is the core of solar thermal collector.At present solar thermal collector has flat-plate collector and electron tubes type heat collector two big classes, and the latter be domestic most widely used general, also most possibly realize a kind of heat collector of high temperature heat collector.Existing vacuum glass tube heat collector uses single U type pipe, and U type pipe is installed in the aluminium that has fin and shields with one's own body and put.For such U type pipe vacuum glass tube heat collector, owing to consider the requirement of installation and thermal expansion, aluminium shields with one's own body between cover and the glass tube, has very big thermal contact resistance between U type pipe and the fin, influenced the solar energy ecto-entad, to the transmission efficiency of U type intraductal working medium.For the vacuum glass tube heat collector of common no U type pipe, then existing in the pipe with water is the problem of easy bursting by freezing glass tube of medium, winter, and hot water effluent's temperature is not high, and the heat collector pressure-bearing is not high, be difficult to satisfy problem such as building heat supplying system bearing requirements.Along with the application of China's solar energy with popularize, HTHP type solar thermal collector has become the solar energy development utilization and has utilized the new difficult problem in field and research of technique target, therefore, be necessary very much to develop bearing capacity height, collecting efficiency height, solar energy heating technology that heat transfer efficiency is good.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube that improves the solar thermal collector bearing capacity, improves solar heat collector to supply heat temperature, raising solar thermal collector heat conductivility and collecting efficiency.
Technical scheme of the present invention is as follows:
Graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube of the present invention mainly is made up of header tube, header adapter, separating tube, collector tube, capillary metal tube, outer glass pipe, inner glass tube, graphite packing, adiabatic end socket, elastic support and adiabatic internal lining pipe.Water, freon or other heat transfer medium enter U type capillary metal tube through first header tube, header adapter, separating tube, be heated behind the solar energy of absorption glass tube with vacuum, enter second header tube by collector tube then, finish the process of solar energy heating, heating working medium, transfer heat.
Glass tube with vacuum in the graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube of the present invention is made of outer glass pipe, inner glass tube and elastic support, at inner glass tube outer surface spraying solar selectively absorbing coating, vacuumizes between the interior outer glass pipe.
Graphite packing in the graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube of the present invention is filled between inner glass tube, capillary metal tube and the adiabatic internal lining pipe, glass tube with vacuum upper opening place seals with adiabatic end socket, reduces glass tube with vacuum inner capillary tube and extraneous heat loss.
Many internal diameters of employing in the graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube of the present invention are 2～5mmU type capillary metal tube, and are connected with separating tube, collector tube, and every U type capillary metal tube is installed in the graphite packing; U type length capillaceous is exceeded to reach the glass tube with vacuum sealed end.
Working medium in the open type capillary pipe in the graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube of the present invention can be water, freon or other heat transfer medium, and glass tube with vacuum adopts Pyrex to make.
Effect of the present invention and benefit are that graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube of the present invention adopts the U type capillary metal tube of many 2～5mm to constitute, in the inner confined space of glass tube, increase the heat exchange area of working medium, increased the heat output of thermal-collecting tube; Graphite packing is filled between inner glass tube and the capillary metal tube, has eliminated the air thermal resistance that the pipe U-shaped tube solar heat-collecting pipe of existing vacuum glass exists, and has improved the heat conductivility of thermal-collecting tube.The structural design of many capillaries also helps improving the heat supply temperature of thermal-collecting tube.Divide collector tube to be connected, have the effect of uniform distribution U type capillary metal tube internal working medium flow with many capillary metal tubes; U type capillary metal tube caliber is little, has improved the bearing capacity of thermal-collecting tube.
Description of drawings
Accompanying drawing 1 is a graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube facade contour structures schematic diagram.
Accompanying drawing 2 is a graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube A-A profile.
Accompanying drawing 3 is a graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube B-B profile.
Accompanying drawing 4 is a graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube C-C profile.
Accompanying drawing 5 is a graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube pipe inner capillary tube structural representation.
Accompanying drawing: 1 first header tube 1; 2 second header tube 2; 3 headers are taken over; 4 fens collector tubes; 5U type capillary metal tube; 6 outer glass pipes; 7 inner glass tubes; 8 graphite packings; 9 adiabatic end sockets; 10 elastic supports; 11 adiabatic internal lining pipes.
The specific embodiment
Be described in detail specific embodiments of the invention below in conjunction with technical scheme and accompanying drawing.
Graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube of the present invention mainly is made up of first header tube 1, second header tube 2, header adapter 3, separating tube, collector tube, U type capillary metal tube 5, outer glass pipe 6, inner glass tube 7, graphite packing 8, adiabatic end socket 9 and elastic support 10; Connection successively between first header tube 1 and second header tube 2, header adapter 3, separating tube, collector tube and the U type capillary metal tube 5 is adopted and is welded to connect; U type capillary metal tube 5 is installed in the graphite packing 8, forms an integral body and is installed in the glass tube with vacuum, adopts adiabatic end socket 9 sealings in upper shed place of glass tube with vacuum; Behind the inner glass tube 7 outer surfaces spraying solar selectively absorbing coating, weld and vacuumize, elastic support 10 is housed between the interior outer glass pipe with outer glass pipe 6.
Water, freon or other heat transfer medium enter in the U type capillary metal tube 5 through first header tube 1, header adapter 3, separating tube, be heated behind the solar energy of absorption glass tube with vacuum, enter second header tube 2 by collector tube then, finish the process of solar energy heating, heating working medium, transfer heat.

Claims (4)

1. graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube, comprise first header tube (1), second header tube (2), header adapter (3), separating tube, collector tube, capillary metal tube (5), outer glass pipe (6), inner glass tube (7), graphite packing (8), adiabatic end socket (9), elastic support (10) and adiabatic internal lining pipe (11), it is characterized in that glass tube with vacuum is made of outer glass pipe (6), inner glass tube (7) and elastic support (10), vacuumizes between the interior outer glass pipe; The internal diameter of capillary metal tube (5) is 2～5mm, and is connected with separating tube, collector tube; Graphite packing (8) is filled between inner glass tube (7), capillary metal tube (5) and the adiabatic internal lining pipe (11), and glass tube with vacuum upper opening place seals with adiabatic end socket (9); Heat-transfer working medium water or freon are taken over (3), are entered the capillary metal tube by the separating tube separatory through first header tube (1), header, are heated behind the solar energy of absorption glass tube with vacuum, enter second header tube (2) by collector tube then.
2. graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube according to claim 1, its feature also are inner glass tube (7) outer surface spraying solar selectively absorbing coating.
3. graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube according to claim 1, its feature are that also capillary metal tube (5) is installed in the graphite packing (8); The length of capillary metal tube (5) is exceeded to reach the glass tube with vacuum sealed end.
4. graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube according to claim 1, its feature are that also glass tube with vacuum adopts Pyrex to make.
CN2008102280406A 2008-10-08 2008-10-08 Graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube Expired - Fee Related CN101387449B (en)

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CN2008102280406A CN101387449B (en) 2008-10-08 2008-10-08 Graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube

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CN2008102280406A CN101387449B (en) 2008-10-08 2008-10-08 Graphite-filled vacuum glass tube open type capillary pipe solar thermal-collecting tube

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CN101387449B true CN101387449B (en) 2010-06-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102872785A (en) * 2012-10-20 2013-01-16 南京工业大学 Through type solar heat collection high-temperature reactor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102159903B (en) * 2008-07-22 2015-02-04 加利福尼亚大学董事会 Mini-channel tube solar collector
IT201700109097A1 (en) * 2017-09-28 2019-03-28 Archimede Sistemi Ind S R L S SOLAR ENERGY CONVERTER DEVICE, CORRESPONDING SOLAR REACTOR, AND ITS RELATIVE SYSTEM

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2171087Y (en) * 1993-04-30 1994-07-06 安喆 Vacuum tube solar heat collector for four season use
US5931156A (en) * 1997-11-18 1999-08-03 Industrial Technology Research Institute Integral heat-pipe type solar collector
CN1410728A (en) * 2001-10-04 2003-04-16 千院基 Antifreezing vacuum tube solar heat collector
CN1595010A (en) * 2004-06-29 2005-03-16 浙江大学 Flat-type solar water heater with vacuum glass cover plate heating tubes
CN1710351A (en) * 2004-06-18 2005-12-21 徐宝安 Single-way reducing glass solar vacuum heat collector fitted with reflective collecting mirror
CN101198827A (en) * 2005-06-23 2008-06-11 Sgl碳股份公司 Vacuum tube for solar collectors with improved heat transfer
CN101240946A (en) * 2008-01-30 2008-08-13 尹继奎 Water tank-free multifunctional bearing high-temperature solar water heater
CN101256035A (en) * 2008-03-11 2008-09-03 东南大学 Inner intumescence type vacuum thermal-collecting tube

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2171087Y (en) * 1993-04-30 1994-07-06 安喆 Vacuum tube solar heat collector for four season use
US5931156A (en) * 1997-11-18 1999-08-03 Industrial Technology Research Institute Integral heat-pipe type solar collector
CN1410728A (en) * 2001-10-04 2003-04-16 千院基 Antifreezing vacuum tube solar heat collector
CN1710351A (en) * 2004-06-18 2005-12-21 徐宝安 Single-way reducing glass solar vacuum heat collector fitted with reflective collecting mirror
CN1595010A (en) * 2004-06-29 2005-03-16 浙江大学 Flat-type solar water heater with vacuum glass cover plate heating tubes
CN101198827A (en) * 2005-06-23 2008-06-11 Sgl碳股份公司 Vacuum tube for solar collectors with improved heat transfer
CN101240946A (en) * 2008-01-30 2008-08-13 尹继奎 Water tank-free multifunctional bearing high-temperature solar water heater
CN101256035A (en) * 2008-03-11 2008-09-03 东南大学 Inner intumescence type vacuum thermal-collecting tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102872785A (en) * 2012-10-20 2013-01-16 南京工业大学 Through type solar heat collection high-temperature reactor

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