EP0064522A1 - Flat plate solar collector - Google Patents

Flat plate solar collector

Info

Publication number
EP0064522A1
EP0064522A1 EP81903057A EP81903057A EP0064522A1 EP 0064522 A1 EP0064522 A1 EP 0064522A1 EP 81903057 A EP81903057 A EP 81903057A EP 81903057 A EP81903057 A EP 81903057A EP 0064522 A1 EP0064522 A1 EP 0064522A1
Authority
EP
European Patent Office
Prior art keywords
frame
solar collector
bottom plate
absorber
accordance
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.)
Ceased
Application number
EP81903057A
Other languages
German (de)
French (fr)
Inventor
Axel Krister Ingmar Lindkvist
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.)
TRIMCO K. LINDKVIST
Original Assignee
TRIMCO K LINDKVIST
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 TRIMCO K LINDKVIST filed Critical TRIMCO K LINDKVIST
Publication of EP0064522A1 publication Critical patent/EP0064522A1/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/30—Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/50—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/40—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/50—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings
    • F24S80/58—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings characterised by their mountings or fixing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/60—Thermal insulation
    • F24S80/65—Thermal insulation characterised by the material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S2025/01—Special support components; Methods of use
    • F24S2025/011—Arrangements for mounting elements inside solar collectors; Spacers inside solar collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S2080/01—Selection of particular materials
    • F24S2080/017—Natural materials, e.g. wood
    • 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
    • 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
    • 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
    • Y02E10/47—Mountings or tracking

Definitions

  • the present invention relates to a solar collector unit with a flowing heat transport medium, a solar collector consisting of several such units, and a method of manufacturing them.
  • Fig 1 is a cross-sectional view ( i.e. parallel to the eaves ) comprising among other things frame construction, insulating bottom, support and cover material.
  • Fig 2 is the corresponding longitudinal sectional view (perpendicular to the eaves at normal erection on a roof of a house).
  • Fig 3-4 show alternative embodiments of mechanical fastening device for frame structure.
  • Fig 4 also is an embodiment of fastening of an absorber.
  • Fig 5 is a perspective view of an embodiment of support for free hanging of cover, and its fitting in the frame.
  • Fig 6 is a longitudinal sectional view of alternative embodiment of support for cover material.
  • Fig 7 is a cross-sectional view of support according to fig 6.
  • Fig 8 is a cross-sectional view of embodiment of support for cover material according to a second alternative.
  • Fig 9 is a top plan view of collector elements connected to each other, with an embodiment of parallel connection of absorbers of the exemplified embodiment.
  • the figures show the frame of the solar collector, composed of prefabricated frame members (1,2,3,4) of preferably wood, suitably pressure impregnated or otherwise rot-resistant treated, disposed in such a way that the solar collector out of a supplied prefabricated kit may be easily assembled preferably on the erection site.
  • each collector unit need not itself form a complete casing, bat does so together with adjacent units, as will be discussed in more detail subsequently.
  • Upper and lower frame members are made in full length along the solar collector comprising two or more collector units, which also simplifies and cheapens the construction.
  • the solar collector is assembled to units by putting its frame members toge ther , preferably by us ing mechanical assembly devices, such as at least one furniture fitting (12) or one assembling bolt (33) per joint. Furthermore these joints are preferably provided with guiding details e.g. guid ing pegs and drill holes (13) or tenons and grooves (14) to improve the measure accuracy of the solar collector units and facilitate the assemblage.
  • us ing mechanical assembly devices such as at least one furniture fitting (12) or one assembling bolt (33) per joint.
  • these joints are preferably provided with guiding details e.g. guid ing pegs and drill holes (13) or tenons and grooves (14) to improve the measure accuracy of the solar collector units and facilitate the assemblage.
  • the side frame members of the solar collector are provided with laths (6,7) whose edge sides also serve as support for the long, sides of the bottom plate as below. These laths admit rainwater etc. coming in under the roofing to pass freely under the solar collector without affecting it. Similarly condensation moisture is enabled to air out.
  • the laths are also used for fixing the solar collector to the bedding, either this is an even roof like matched board, plywood or the like, or it is a transver se tile strip constuction, or other bedding of framework.
  • the bottom plate Due to the fact that the bottom plate has high strength it may be completely self-supporting within each unit. If necessary it can be supported by extra bed laths for instance performed and installed like (8) in figure 1.
  • the ends of the laths (9,10) protrude preferably outside the upper and/or lower member.
  • the bottom plate of the solar collector consists solely of a special composite material in form of a plate (5) simultanously performing three functions i.e. mechanical bottom, diffusion barrier and insulation. It is composed of in turn a sealing layer against diffusion preferably aluminium foil, an insulating layer preferably cellular plastic, such as polyurethane or polyisocyanurate foam and furthermore one sealing layer preferably of aluminium foil
  • bottom plates are already at prefabrication given the exact size and are at installation positioned in respective solar collector unit, abutting to all sides of the frame. In doing so they are supported along the edges of their long sides by the laths (6,7) which are joined to the outer long sides respective the partition member of the frame.
  • the bottom plates are preferably positioned in the solar collector unit without any special fixing.
  • a run of jointing sealing compound (25) e.g. silicone gum keeps the bottom plate (5) in its position and makes a seal between the frame members (1,2,3,4) and the bottom plate.
  • the solar collector contains an absorber furnished with ducts (35) for a flowing heat transport medium.
  • the absorber can be made of sheet materials usually of metals like copper or aluminium, possibly with a surface treatment giving properties suitable for this purpose.
  • the absorber units of the solar collector (29) are usually connected parallel by connecting the two preferably horizontally placed header pipes (22 and 21) for inlet respective outlet of the heat transport medium in such a way that it runs along the whole of the upper and lower frame members of the solar collectors (3,4) and through the partition member of the frame (1,2). These frame members therefore have holes or slots in their upper an lower ends (30) to make it possible. to join the headers of the absorber units to each other.
  • connection fi ttings or connection hoses are fitted.
  • the absorber is fixed in the collector units solely in one point along its longitude preferably at its upper header or corresponding. This is preferably arranged by attaching a pendulum (23) and a pipe clip alternatively a clamp or correspondingly to the upper frame member (3).
  • the heat transport medium is made to circulate by a drivin pump and by a temperature sensitive control to carry the collected heat away. In some cases self-circulation may be sufficient.
  • the total absorber area is connected preferably diagonally.
  • the inlet pipe (32) is connected to the bottom left and the outlet tube to the top right or arranged opposite hand. Then the inlet tube can be placed. preferably inside the collector in the lower part parallel to the lower header pipe. Special holes or slots (31) are made for this purpose in the partition frame members (2). This admits the two pipes to be installed at the same side of the collector, and a more favourable installation is obtained.
  • the inlet pipe (32) is preferably connected by a U-shaped fitting (36) at the end of the lower header pipe (22), which in accordance with examples in figure 9 gives flow direction according to arrows from lower right corner to upper left. Due to the symmetrical design of the solar collector the connection points can be chosen at the installation.
  • tranverse profiles (11) e.g. T-shaped profiles are fitted at a suitable distance, which at the installation on the site are positioned in prefabricated slots in the s ideframe s and which are preferably hanging freely within each solar collector unit.
  • these are provived with grooves or slots, wherein screws can be fitted and in that way fix the cover material to the profiles.
  • a third examplary embodiment is shown in fig 8.
  • Transverse profiles (26) whose length is equal to the inner width of the solar collector units are fixed between the side frames (1,2) by making one or several drill holes (27) in the two units at each connection point and tenons (28) are put
  • the cover material (17) preferably consists of plastic sheets possibly with insulating ducts. When using single plastic sheets these are fixed to the longitudinal partition walls by overlapping joints as shown in fig 1. Then the solar collector is preferably sealed between frame and cover material, and between two layers of cover material with elastic profiles. This is preferably done by using two continous C-shaped sealing strips (18) to seal both sides of the upside surfaces of the frame. Preferably these strips are fixed. to the frame at prefabrication with e.g. staples or to the cover material with glue or self adhesive tape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Photovoltaic Devices (AREA)

Abstract

Une unite de collecteur solaire montee sur une plaque plane comprend une plaque de fond (5), un cadre (14) entourant un absorbant place au-dessus de la plaque de fond et pourvu de conduites pour un milieu de transport thermique en ecoulement, et un couvercle (17) place au-dessus de l'absorbant et forme d'une materiau transparent a la radiation solaire. Le cadre se compose d'organes de cadre prefabriques (1-4) relies par des dispositifs mecaniques. La plaque de fond (5) est placee dans le cadre (1-4) et est faite d'un materiau composite, compose de preference de plastique cellulaire recouverte d'une feuille d'aluminium d'etancheite. Un collecteur solaire comprend plusieurs unites de collecteurs adjacentes de ce type et les cadres des unites adjacentes possedent un organe de cadre en commun. Un procede permettant de produire des collecteurs solaires conformes a la description ci-dessus consiste a assembler des organes de cadre prefabriques (1-4), de preference a pied d'oeuvre, a un cadre rigide, au moyen de dispositifs mecaniques. La plaque de fond (5) est ensuite positionnee sur le cadre, et l'absorbant est place dans le cadre au-dessus de la plaque de fond et un de ces collecteurs est fixe par endroits a l'organe de cadre transversal adjacent par des moyens de fixation. Le materiau de couverture (17) est fixe sur les bords du cadre pour couvrir et sceller l'unite.A solar collector unit mounted on a flat plate comprises a bottom plate (5), a frame (14) surrounding an absorbent placed above the bottom plate and provided with pipes for a flowing thermal transport medium, and a cover (17) placed above the absorbent and forms a material transparent to solar radiation. The frame is made up of prefabricated frame members (1-4) connected by mechanical devices. The bottom plate (5) is placed in the frame (1-4) and is made of a composite material, preferably composed of cellular plastic covered with a sheet of sealing aluminum. A solar collector comprises several adjacent collector units of this type and the frames of the adjacent units have a common frame member. A method for producing solar collectors according to the above description consists in assembling prefabricated frame members (1-4), preferably on the job, to a rigid frame, by means of mechanical devices. The bottom plate (5) is then positioned on the frame, and the absorbent is placed in the frame above the bottom plate and one of these collectors is fixed in places to the adjacent transverse frame member by fixing means. The cover material (17) is fixed to the edges of the frame to cover and seal the unit.

Description

Flat plate solar collector
The present invention relates to a solar collector unit with a flowing heat transport medium, a solar collector consisting of several such units, and a method of manufacturing them.
Previously known solar collectors are generally manufactured and assembled to complete units or casings industrially. It is then essential for them to possess such qualities regarding strength, rigidity and resistance as to admit transport as well as installation. Due to the fact that difficulties increase with increased size, solar collectors normally are of limited size. This fact makes it necessary to use a considerable amount of frame details, fittings etc, which draw a considerable portion of the production cost. These factors taken together have the effect that the active parts of the solar collectors normally draw only a moderate portion of the total cost. This is an explanation to the fact that solar heating plants have high installation costs and consequently unsatisfactory profitability.
This drawback has been overcome by the present invention, which is a basically different collector. By an unconventional choice of materials, components and assembly technique a quick and simple. installation is obtained, which doesn't require professional skill. By this invention production of solar collector elements and complete collector units ready for operation and with high efficiency has been made possible at considerably lower cost than has been possible so far. This is a very important step forward, as profitability is definitely improved.
The characteristic elements of the invention are defined in the patent claims after the descr iption . Examples of embodiments of the invention will be explained in the ensuing description with reference to the accompanying drawings.
Fig 1 is a cross-sectional view ( i.e. parallel to the eaves ) comprising among other things frame construction, insulating bottom, support and cover material.
Fig 2 is the corresponding longitudinal sectional view (perpendicular to the eaves at normal erection on a roof of a house).
Fig 3-4 show alternative embodiments of mechanical fastening device for frame structure.
Fig 4 also is an embodiment of fastening of an absorber.
Fig 5 is a perspective view of an embodiment of support for free hanging of cover, and its fitting in the frame.
Fig 6 is a longitudinal sectional view of alternative embodiment of support for cover material.
Fig 7 is a cross-sectional view of support according to fig 6.
Fig 8 is a cross-sectional view of embodiment of support for cover material according to a second alternative.
Fig 9 is a top plan view of collector elements connected to each other, with an embodiment of parallel connection of absorbers of the exemplified embodiment.
The figures show the frame of the solar collector, composed of prefabricated frame members (1,2,3,4) of preferably wood, suitably pressure impregnated or otherwise rot-resistant treated, disposed in such a way that the solar collector out of a supplied prefabricated kit may be easily assembled preferably on the erection site. By this procedure each collector unit need not itself form a complete casing, bat does so together with adjacent units, as will be discussed in more detail subsequently.
Upper and lower frame members are made in full length along the solar collector comprising two or more collector units, which also simplifies and cheapens the construction.
The solar collector is assembled to units by putting its frame members toge ther , preferably by us ing mechanical assembly devices, such as at least one furniture fitting (12) or one assembling bolt (33) per joint. Furthermore these joints are preferably provided with guiding details e.g. guid ing pegs and drill holes (13) or tenons and grooves (14) to improve the measure accuracy of the solar collector units and facilitate the assemblage.
The side frame members of the solar collector are provided with laths (6,7) whose edge sides also serve as support for the long, sides of the bottom plate as below. These laths admit rainwater etc. coming in under the roofing to pass freely under the solar collector without affecting it. Similarly condensation moisture is enabled to air out. The laths are also used for fixing the solar collector to the bedding, either this is an even roof like matched board, plywood or the like, or it is a transver se tile strip constuction, or other bedding of framework.
Due to the fact that the bottom plate has high strength it may be completely self-supporting within each unit. If necessary it can be supported by extra bed laths for instance performed and installed like (8) in figure 1.
In order to support pipings and sheet metal details etc. if any, and simultaneously facilitate ventilation and waste water passage, the ends of the laths (9,10) protrude preferably outside the upper and/or lower member.
The bottom plate of the solar collector consists solely of a special composite material in form of a plate (5) simultanously performing three functions i.e. mechanical bottom, diffusion barrier and insulation. It is composed of in turn a sealing layer against diffusion preferably aluminium foil, an insulating layer preferably cellular plastic, such as polyurethane or polyisocyanurate foam and furthermore one sealing layer preferably of aluminium foil
These bottom plates are already at prefabrication given the exact size and are at installation positioned in respective solar collector unit, abutting to all sides of the frame. In doing so they are supported along the edges of their long sides by the laths (6,7) which are joined to the outer long sides respective the partition member of the frame.
The bottom plates are preferably positioned in the solar collector unit without any special fixing.
In accordance with an alternative embodiment a run of jointing sealing compound (25) e.g. silicone gum keeps the bottom plate (5) in its position and makes a seal between the frame members (1,2,3,4) and the bottom plate.
The solar collector contains an absorber furnished with ducts (35) for a flowing heat transport medium. The absorber can be made of sheet materials usually of metals like copper or aluminium, possibly with a surface treatment giving properties suitable for this purpose. A selective absorber coating, such as black nickel or black chrome, gives such properties, as the material has a high absorption of wavelengths within the solar radiation, and a low emissivity of longer wavelengths, i.e. heat radiation The absorber units of the solar collector (29) are usually connected parallel by connecting the two preferably horizontally placed header pipes (22 and 21) for inlet respective outlet of the heat transport medium in such a way that it runs along the whole of the upper and lower frame members of the solar collectors (3,4) and through the partition member of the frame (1,2). These frame members therefore have holes or slots in their upper an lower ends (30) to make it possible. to join the headers of the absorber units to each other.
At installation the absorber units (29) are positioned in the solar collector frame from above and the ends of the headers are put into their holes or slots in the longitudinal frame members. In order to join the header pipes, connection fi ttings or connection hoses ( 34 ) are fitted.
To obtain a simple installation and avoid tensions in the absorber caused by temperature movements, the absorber is fixed in the collector units solely in one point along its longitude preferably at its upper header or corresponding. This is preferably arranged by attaching a pendulum (23) and a pipe clip alternatively a clamp or correspondingly to the upper frame member (3).
The heat transport medium is made to circulate by a drivin pump and by a temperature sensitive control to carry the collected heat away. In some cases self-circulation may be sufficient.
In order to obtain favourable circulation conditions with as uniform flow of the heat transport medium as possible, the total absorber area is connected preferably diagonally. The inlet pipe (32) is connected to the bottom left and the outlet tube to the top right or arranged opposite hand. Then the inlet tube can be placed. preferably inside the collector in the lower part parallel to the lower header pipe. Special holes or slots (31) are made for this purpose in the partition frame members (2). This admits the two pipes to be installed at the same side of the collector, and a more favourable installation is obtained. The inlet pipe (32) is preferably connected by a U-shaped fitting (36) at the end of the lower header pipe (22), which in accordance with examples in figure 9 gives flow direction according to arrows from lower right corner to upper left. Due to the symmetrical design of the solar collector the connection points can be chosen at the installation.
As support for the cover of the solar collector (17) tranverse profiles (11) e.g. T-shaped profiles are fitted at a suitable distance, which at the installation on the site are positioned in prefabricated slots in the s ideframe s and which are preferably hanging freely within each solar collector unit. According to an other embodiment of the transverse profiles these are provived with grooves or slots, wherein screws can be fitted and in that way fix the cover material to the profiles.
An other alternative embodiment is shown in fig 7. Transverse profiles (15) whose lengths are equal to or shorter than the inner width of the solar collector units, are fixed on the underside of the material e.g. by riveting (16). These profiles are shown trapezium profiled, but can be designed differently. This fact makes the reinforced cover material units completely self-supporting between the frame members.
A third examplary embodiment is shown in fig 8. Transverse profiles (26) whose length is equal to the inner width of the solar collector units are fixed between the side frames (1,2) by making one or several drill holes (27) in the two units at each connection point and tenons (28) are put The cover material (17) preferably consists of plastic sheets possibly with insulating ducts. When using single plastic sheets these are fixed to the longitudinal partition walls by overlapping joints as shown in fig 1. Then the solar collector is preferably sealed between frame and cover material, and between two layers of cover material with elastic profiles. This is preferably done by using two continous C-shaped sealing strips (18) to seal both sides of the upside surfaces of the frame. Preferably these strips are fixed. to the frame at prefabrication with e.g. staples or to the cover material with glue or self adhesive tape.
When using plastic materials with insulating ducts as cover material, these are preferably fixed with standarized fitting details.
When using one-layer plastic material, preferably sheets of fiber-glass armed polyester in UV-s tab ilized quality, these are attached to the frame construction of the solar collector with laths (19) placed at least partly over the frame members and are fixed preferably with screws (20) with packings.

Claims

Claims
1. Flat plate solar collector unit, comprising a bottom plate (5), a frame (1-4) enclosing an absorber fitted above the bottom plate and provided with ducts for a flowing heat transport medium, and a cover (17) placed above the absorber and made of a material transparent to solar radiation characterized in that the frame comprises prefabricated members (1-4) joined by mechanical means, and that the. bottom plate (5) is positioned in the frame (1-4) and is made of a composite material, preferably consisting of cellular plastic, such a polyurethane or polyisocyanurate foam, covered with sealing aluminium foil.
2. Solar collector unit in accordance with claim
1, characterized in that the bottom plate (5) is positioned loosely in the frame (1-4) and is supported at least partly along its long side by laths (6,7) joined with the long sides of the frame (1,2).
3. Solar collector unit in accordance with claim
1, characterized in that the bottom plate (5) is supported along its long sides by laths (6,7) joined with the long sides of the frame (1,2) and fixed to the frame and sealed to the enclosing frame members with sealant.
4. Solar collector unit in accordance with any of the claims 1-3, characterized in that the prefabricated members (1-4) are joined in their joining points between transverse (3,4) and longitudinal (1,2) members to a mechanical unit with mechanical means such as furniture fittings (12) or assembling bolts (33).
5. Solar collector unit in accordance with claim 4 characterized in that in the joining points of the frame members (1-4) at least one guiding peg and one hole (13) or one guiding tenon and one groove are arranged.
6. Solar collector unit in accordance with any of the preceding claims, characterized in that at least one transverse profile (11) running between the longitudinal members of the frame and at least partly inserted in corresponding slots in these, is arranged as supporting bed for the cover material (17).
7. Solar collector unit in accordance with any of the claims 1-5, characterized in that transverse profiles (15), whose length is shorter or equal to the inner width of the frame (1-4), and which are fixed to the transparent cover material (17), are arranged to stiffen it.
8. Solar collector unit in accordance with any of the claims 1-5, characterized in that at least one transverse profile (26), whose length is equal to the inner distance between the frame members (1,2), is fixed between these by arranging at least one tenon at each joining point, at which the profile serves as support bed for the cover material (17).
9. Solar collector unit in accordance with any of the preceding claims, characterized in that the mentioned lath (6,7) supporting the frame (1,4) and/or the bottom plate (5) fixes the solar collector unit to the bedding.
10. Solar collector unit in accordance with any of the above mentioned patent claims, characterized in that the mentioned lath supporting the frame (1-4) and/or the bottom pla te ( 5 ) protudes outs ide upper ( 9 ) respect ive ly lower (10) frame, so that its protruding ends make one upper and/or one lower shelf.
11. Solar collector unit in accordance with any of the preceding claims, characterized in that the absorber is fixed only in few points along its longitude by fastening to the upper frame member (3) a header pipe (23) for inlet or outlet of liquid in the absorber, running along the upper longitudinal edge of the absorber.
12. Solar collector, comprising several adjacent solar collector units in accordance with any of the claims 1-10, in which each unit. comprises one bottom plate (15) one frame (1-4) enclosing an absorber, arranged above the bottom plate and provided with ducts for a flowing heat transport medium, and a cover (17) fixed above the absorber and of a material transparent to solar radiation characterized in that the solar collector units are parallel connected by header pipes (21,22) for inlet and outlet of the heat carrying medium running essentially horizontally along the longitudinal frame members of the absorber and that the frames (1-4) of two adjacent solar collector units present a frame member common for the adjacent frame sides.
13. Method for manufacturing a solar collector unit, comprising a bottom plate (5), a frame (1-4) enclosing an absorber fixed above the bottom plate and provided with ducts for a flowing heat transport medium, and a cover made of a material transparent to solar radiation characterized in that prefabricated frame members (1-4) are assembled, preferably on the site with mechanical fastening means (12-14, 33), at the ends of the frame members to a rigid frame wher eupon a bottom plate (5) of a composite material, preferably comprising cellular plastic covered with sealing aluminium foil, is positioned in the frame, above the bottom plate and is fixed with the header pipe (21) running along the upper longitudinal edge of the absorber, in few points to the adjacent transverse frame member (3), whereupon the cover (17) is fixed sealing the edges of the frame in order to cover the unit.
EP81903057A 1980-11-18 1981-11-18 Flat plate solar collector Ceased EP0064522A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8008064 1980-11-18
SE8008064A SE8008064L (en) 1980-11-18 1980-11-18 PLAN SOLAR CARE

Publications (1)

Publication Number Publication Date
EP0064522A1 true EP0064522A1 (en) 1982-11-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP81903057A Ceased EP0064522A1 (en) 1980-11-18 1981-11-18 Flat plate solar collector

Country Status (5)

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EP (1) EP0064522A1 (en)
JP (1) JPS57502015A (en)
DK (1) DK319482A (en)
SE (1) SE8008064L (en)
WO (1) WO1982001765A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008014320U1 (en) * 2008-10-28 2009-01-15 Bathon, Leander, Prof. Dr. component
ES2421205B1 (en) * 2013-05-29 2014-04-29 Alberto Miguel RETANA PENDÓN Solar collector
CN104864617B (en) * 2015-05-13 2017-03-22 高元运 Flat-plate solar collector reinforcing device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130108A (en) * 1976-03-31 1978-12-19 Ppg Industries, Inc. Solar collector for heating a fluid
FR2366525A1 (en) * 1976-07-30 1978-04-28 Anvar DEVICE FOR COLLECTING SOLAR ENERGY
DE2650144A1 (en) * 1976-10-30 1978-05-03 Rheinisches Zinkwalzwerk Gmbh CLAMPING FRAME FOR SOLAR COLLECTORS
US4132217A (en) * 1977-05-27 1979-01-02 Solar Energy Products Company Solar air heat collector
US4178909A (en) * 1978-05-01 1979-12-18 Reynolds Metals Company Solar collector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8201765A1 *

Also Published As

Publication number Publication date
SE8008064L (en) 1982-05-19
DK319482A (en) 1982-07-15
JPS57502015A (en) 1982-11-11
WO1982001765A1 (en) 1982-05-27

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