EP2097684A1 - Method of connecting absorption plate with tube register of a thermal solar collector - Google Patents

Method of connecting absorption plate with tube register of a thermal solar collector

Info

Publication number
EP2097684A1
EP2097684A1 EP06799878A EP06799878A EP2097684A1 EP 2097684 A1 EP2097684 A1 EP 2097684A1 EP 06799878 A EP06799878 A EP 06799878A EP 06799878 A EP06799878 A EP 06799878A EP 2097684 A1 EP2097684 A1 EP 2097684A1
Authority
EP
European Patent Office
Prior art keywords
tube
absorption plate
register
tube register
solar collector
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.)
Withdrawn
Application number
EP06799878A
Other languages
German (de)
French (fr)
Inventor
Milan NOVÁK
Johann Kollmannsberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thermo Solar Ziar S R O
Thermo/Solar Ziar sro
Original Assignee
Thermo Solar Ziar S R O
Thermo/Solar Ziar sro
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thermo Solar Ziar S R O, Thermo/Solar Ziar sro filed Critical Thermo Solar Ziar S R O
Publication of EP2097684A1 publication Critical patent/EP2097684A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/80—Accommodating differential expansion of solar collector elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • 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

Definitions

  • Present invention concerns a method of connecting absorption plate with tube register of a thermal solar collector.
  • An absorber made by soldering has a disadvantage that both absorber and tube register must be made of the same material, the joint has relatively small contact surface and, as a consequence, it exhibits relatively high resistance against heat transfer from the absorber to heat transferring medium flowing in the tube register.
  • a further disadvantage consists in that at increasing stagnant temperatures of high performance modern collectors the danger of solder softening and separating the absorber from the tubes increases, or possibly, that fusing agents may release gases which might condense in the form of stains at the inner side of the transparent collector cover.
  • An absorber produced by welding using ultrasound, has a disadvantage that similarly as in the above case it allows connecting of the same materials only and, moreover, it exhibits even higher resistance for the heat transfer from the absorber into the tube.
  • a further disadvantage consists in that during welding the selective conversion layer at the weld site is mechanically destructed, thus deteriorating the performance parameters and appearance of the absorber.
  • An absorber produced by welding using laser, has a disadvantage that the resistance against heat transfer from the absorber into the tube register is the highest from among all above mentioned examples.
  • a further disadvantage consists in that if the absorber and the tube register are made of different materials, the joint durability may be considerably limited as a consequence of different heat dilatations.
  • the aim of the present invention is a method of production of an absorber exhibiting small resistance against heat transfer, wherein the absorption plate and the tube register may be made of materials having different thermal expansions.
  • the metal absorption plate and the tube register are made of aluminum, copper, steel or other metal material.
  • the main advantage of the present invention is the small resistance against heat transfer from the absorption plate to heat transferring medium, trouble-free connecting of materials exhibiting different thermal expansions, long service life, good appearance of the absorber without damaging the absorption layer, easy stabilization of the absorber position relative to the transparent collector cover, trouble-free recycling in the case of the absorber separation from the tube register even in the case, when they are made of different materials.
  • the attached figure shows an absorber produced by the method according to the present invention.
  • an absorption copper plate 1_ of the thickness of 0.2 mm specially shaped hollowing 2 is pre-formed, into which a copper tube 3 is inserted, forming a part of the tube register 4.
  • the copper tube 3 fits with its diameter into the shaped hollowing 2.
  • the copper tube 3 is pressed in the absorption aluminum plate 1 in a special press so that most part of copper tube 3 surface is firmly locked in the tube register 4.
  • the method according to the present invention may be utilized in the production of thermal solar collectors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Development (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The subject-matter of the method consists in that at least one specially shaped hollowing (2) is pre-formed into a metal absorption plate (1) of a thickness of 0.1 to 1.0 mm, into which hollowing a tube (3) is inserted forming a part of tube register (4) of a solar collector. Subsequently, the tube (3) is pressed in the absorption plate (1) so that it is firmly locked in the tube register (4). Before creation of the specially shaped hollowing (2), the metal absorption plate (1) may be provided with an absorption coating. The metal absorption plate (1) and tube register (4) may be made of aluminum, copper, steel or other metal material, or of a combination of the metals.

Description

Method of connecting absorption plate with tube register of a thermal solar collector
Technical Field
Present invention concerns a method of connecting absorption plate with tube register of a thermal solar collector.
Background Art
At present the following methods are most often used for connecting an absorber with a tube register:
An absorber made by soldering - it has a disadvantage that both absorber and tube register must be made of the same material, the joint has relatively small contact surface and, as a consequence, it exhibits relatively high resistance against heat transfer from the absorber to heat transferring medium flowing in the tube register. A further disadvantage consists in that at increasing stagnant temperatures of high performance modern collectors the danger of solder softening and separating the absorber from the tubes increases, or possibly, that fusing agents may release gases which might condense in the form of stains at the inner side of the transparent collector cover.
An absorber, produced by welding using ultrasound, has a disadvantage that similarly as in the above case it allows connecting of the same materials only and, moreover, it exhibits even higher resistance for the heat transfer from the absorber into the tube. A further disadvantage consists in that during welding the selective conversion layer at the weld site is mechanically destructed, thus deteriorating the performance parameters and appearance of the absorber.
An absorber, produced by welding using laser, has a disadvantage that the resistance against heat transfer from the absorber into the tube register is the highest from among all above mentioned examples. A further disadvantage consists in that if the absorber and the tube register are made of different materials, the joint durability may be considerably limited as a consequence of different heat dilatations.
The aim of the present invention is a method of production of an absorber exhibiting small resistance against heat transfer, wherein the absorption plate and the tube register may be made of materials having different thermal expansions.
Disclosure of Invention
The above requirements are fulfilled by the method of connecting an absorption plate with a tube register of a thermal solar collector, the subject-matter of which consists in that a specially shaped hollowings are pre-formed in a metal absorption plate of a thickness of 0.1 to 1.0 mm. Into this hollowings a tube is inserted forming a part of the tube register of a solar collector. Subsequently, the tube is pressed in the absorption plate so that it is firmly locked in the tube register.
It has been found that it is preferable to apply an absorption layer on the metal absorption plate before pre-forming the specially shaped hollowing.
It is preferable as well, if the metal absorption plate and the tube register are made of aluminum, copper, steel or other metal material.
It has been found that it is preferable, if the register tube is after pressing in the absorption plate deformed, in consequence of which turbulent character of flow in the tube is increased and heat transfer from the absorption plate to heat transferring medium is improved.
The main advantage of the present invention is the small resistance against heat transfer from the absorption plate to heat transferring medium, trouble-free connecting of materials exhibiting different thermal expansions, long service life, good appearance of the absorber without damaging the absorption layer, easy stabilization of the absorber position relative to the transparent collector cover, trouble-free recycling in the case of the absorber separation from the tube register even in the case, when they are made of different materials.
An overview of figures in the drawings
The attached figure shows an absorber produced by the method according to the present invention.
Examples of embodiments of the invention
Example 1
In a selectively coated absorption aluminum plate λ_ of the thickness of 0.4 mm specially shaped hollowing 2 is pre-formed, into which a copper tube 3 is inserted, forming a part of the tube register 4. The copper tube 3 fits with its diameter into the shaped hollowing 2. Subsequently, the copper tube 3 is pressed in the absorption aluminum plate 1_ in a special press so that most part of copper tube 3 surface is firmly locked in the tube register 4.
Example 2
In an absorption copper plate 1_ of the thickness of 0.2 mm specially shaped hollowing 2 is pre-formed, into which a copper tube 3 is inserted, forming a part of the tube register 4. The copper tube 3 fits with its diameter into the shaped hollowing 2. Subsequently, the copper tube 3 is pressed in the absorption aluminum plate 1 in a special press so that most part of copper tube 3 surface is firmly locked in the tube register 4.
Industrial applicability
The method according to the present invention may be utilized in the production of thermal solar collectors.

Claims

CLAI MS
1. Method of connecting an absorption plate with tube register of a thermal solar collector, c h a ra ct e r i z e d i n t h a t at least one specially shaped hollowing (2) is pre-formed into a metal absorption plate (1) of a thickness of 0.1 to 1.0 mm, into which hollowing a tube (3) is inserted forming a part of tube register (4) of a solar collector and subsequently, the tube (3) is pressed in the absorption plate (1) so that it is firmly locked in the tube register (4).
2. Method according to claim ^characterized in that an absorption layer is applied on the metal absorption plate (1) before pre-forming the specially shaped hollowing (2).
3. Method according to claims 1 and 2, characterized in that the tube (3) is after pressing it in the absorption plate (1) deformed.
4. Method according to claims 1 to 3, cha racte rized in that the metal absorption plate (1 ) is made of aluminum, copper, steel or other metal material.
5. Method according to claims 1 to 3, ch a racterized i n th at the tube register (1 ) is made of aluminum, copper, steel or other metal material.
EP06799878A 2006-03-24 2006-09-06 Method of connecting absorption plate with tube register of a thermal solar collector Withdrawn EP2097684A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SK5034-2006A SK287288B6 (en) 2006-03-24 2006-03-24 Method of connecting absorption plate with tube register of thermal solar collector
PCT/SK2006/050005 WO2007111575A1 (en) 2006-03-24 2006-09-06 Method of connecting absorption plate with tube register of a thermal solar collector

Publications (1)

Publication Number Publication Date
EP2097684A1 true EP2097684A1 (en) 2009-09-09

Family

ID=38123766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06799878A Withdrawn EP2097684A1 (en) 2006-03-24 2006-09-06 Method of connecting absorption plate with tube register of a thermal solar collector

Country Status (3)

Country Link
EP (1) EP2097684A1 (en)
SK (1) SK287288B6 (en)
WO (1) WO2007111575A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011054194B4 (en) * 2011-10-05 2016-11-24 Martin Kraus Solar collector with a multitude of channel-shaped profiles
AT513492B1 (en) * 2013-03-15 2014-05-15 Bernhard Lenz support plate
CN103712344A (en) * 2013-09-26 2014-04-09 戚荣生 Heat-storage type novel flat-plate solar collector special for solar air conditioners

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1467039A (en) * 1975-05-22 1977-03-16 Oconnell J Heat absorption and/or radiation panels
US4063544A (en) * 1976-10-05 1977-12-20 Raytheon Company Solar energy collectors
DE2732758A1 (en) 1977-07-20 1979-02-08 Kabel Metallwerke Ghh ROOF COVER
EP0029004A1 (en) 1979-11-07 1981-05-20 Wolfram Grenacher Flat web-like heat absorber
JPS58184448A (en) * 1982-04-21 1983-10-27 Nippon Alum Mfg Co Ltd:The Manufacture of solar heat collecting plate and device therefor
NO154027C (en) 1984-04-03 1986-07-02 Norsk Hydro As HEAT EXCHANGE PANEL AND PROCEDURE FOR PRODUCING THE SAME.
DE20021415U1 (en) 2000-12-19 2001-05-03 Sillmann Roland Device for dissipating heat generated by absorption of solar radiation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007111575A1 *

Also Published As

Publication number Publication date
SK287288B6 (en) 2010-05-07
WO2007111575A1 (en) 2007-10-04
SK50342006A3 (en) 2007-10-04

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