WO2007113514A2 - Système de fixation de panneau solaire - Google Patents

Système de fixation de panneau solaire Download PDF

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Publication number
WO2007113514A2
WO2007113514A2 PCT/GB2007/001173 GB2007001173W WO2007113514A2 WO 2007113514 A2 WO2007113514 A2 WO 2007113514A2 GB 2007001173 W GB2007001173 W GB 2007001173W WO 2007113514 A2 WO2007113514 A2 WO 2007113514A2
Authority
WO
WIPO (PCT)
Prior art keywords
mounting
stand
members
stand according
frame
Prior art date
Application number
PCT/GB2007/001173
Other languages
English (en)
Other versions
WO2007113514A3 (fr
Inventor
Shay Brazier
Dan Gower Davies
Lachlan Bateman
Original Assignee
Solar Century Holdings Limited
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 Solar Century Holdings Limited filed Critical Solar Century Holdings Limited
Publication of WO2007113514A2 publication Critical patent/WO2007113514A2/fr
Publication of WO2007113514A3 publication Critical patent/WO2007113514A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/20—Supporting structures directly fixed to an immovable object
    • H02S20/22—Supporting structures directly fixed to an immovable object specially adapted for buildings
    • H02S20/23—Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures
    • H02S20/24—Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures specially adapted for flat roofs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/20—Arrangements for moving or orienting solar heat collector modules for linear movement
    • 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
    • F24S25/10—Arrangement of stationary mountings or supports for solar heat collector modules extending in directions away from a supporting surface
    • F24S25/13—Profile arrangements, e.g. trusses
    • 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
    • F24S25/50—Arrangement of stationary mountings or supports for solar heat collector modules comprising elongate non-rigid elements, e.g. straps, wires or ropes
    • 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
    • F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
    • F24S25/61—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules for fixing to the ground or to building structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
    • 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
    • F24S2025/017—Tensioning means
    • 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
    • F24S2025/021—Sealing means between support elements and mounting surface
    • 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
    • F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
    • F24S2025/6006—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules by using threaded elements, e.g. stud bolts
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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
    • 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
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • This invention relates to a method for mounting solar energy collectors, such as photovoltaic arrays and solar thermal collectors, onto building structures, and particularly, although not exclusively, onto flat roof or low-pitch roof systems.
  • solar energy collectors such as photovoltaic arrays and solar thermal collectors
  • the present invention provides a method of mounting a solar energy collection system onto a surface, comprising the steps of a) placing a support comprising a body including stand-off means for supporting it clear of the surface, in a desired position: and b) connecting a tension member between the body, and a point on the surface so that the stand-off means is held securely in contact with the surface.
  • the invention also extends to a mounting stand for supporting a solar panel or other solar energy collection device on a mounting surface, comprising a body including stand-off means for supporting the body clear of the surface, and a tension device, adapted to be connected between the body and the mounting surface, so as to hold the stand-off means securely in contact with the surface.
  • the stand-off means comprises at least two legs with enlarged pads or skid-shaped feet at their lower ends to spread the load on the surface.
  • the angle at which the legs are attached to the body may be made adjustable, so that the inclination of the body may be varied to accommodate different latitudes and/or roof pitches.
  • Various other load-spreading geometries are also possible for the stand-off means such as a foot comprising a ring which has a relatively large diameter and a single leg extending upwardly at an angle from one side of the ring, with its upper end connected to the underside of the body.
  • the tension device is then connected to the surface, inside the ring, so that the leg forms a braced cantilever.
  • the ring can be replaced by a pair of elongated splayed-apart feet extending from the base of the leg.
  • the tension device comprises a resilient rod or cable made from a polymer or similar material that will not transfer heat from a building exterior to the building interior.
  • the tension device is arranged to penetrate the surface, with suitable weatherproofing arrangements, and is attached to a structural member or deck beneath the surface.
  • the tension device comprises two parts, the first part comprising an anchoring means including a flange for connection to the structural member or deck beneath the roof surface, at its lower end, and an attachment means which extends through the weatherproof membrane, at its upper end, and the second part comprising a resilient rod or cable having connection means at its lower end for connection to the upper end of the first member, and a further connection means at its upper end, for connection to the body of the mounting stand.
  • an anchoring means including a flange for connection to the structural member or deck beneath the roof surface, at its lower end, and an attachment means which extends through the weatherproof membrane, at its upper end
  • the second part comprising a resilient rod or cable having connection means at its lower end for connection to the upper end of the first member, and a further connection means at its upper end, for connection to the body of the mounting stand.
  • blind or self tapping fixings can be used to pierce through the roof to the structural member or deck, securing a mounting means that sits on the roof which incorporates suitable waterproofing measures.
  • the body of the stand comprises a light-weight "space frame" construction, which may for example be made of aluminium, and in a preferred embodiment the frame takes the form of a triangular beam, comprising three elongate members which are arranged parallel to one another and connected together by arrangements of struts, at a spaced-apart intervals along the length of the frame. Pairs of legs for contacting the support surface are also attached to one of the members which forms the main structural member, at suitable intervals, so as to provide adequate support for the entire structure, when mounted on a roof.
  • a light-weight "space frame” construction which may for example be made of aluminium
  • the frame takes the form of a triangular beam, comprising three elongate members which are arranged parallel to one another and connected together by arrangements of struts, at a spaced-apart intervals along the length of the frame. Pairs of legs for contacting the support surface are also attached to one of the members which forms the main structural member, at suitable intervals, so as to provide adequate support
  • the beam comprises a main structural member, such as a box-section or a tube, and a further pair of members which form supports for the solar collection device.
  • the pair of support members may be L-section or channel section members.
  • At least one tensioning member is required, but when the stand is relatively long, there is preferably one tensioning member near each end.
  • the second and third members are channel section members arranged with their open sides facing one another, and at a spacing which is adapted to allow a photovoltaic module or modules, or other solar energy collector, to be mounted between them.
  • Figure 1 is a schematic diagram of the mounting method of the present invention
  • Figure 2 is a cross-section through a flat roof structure illustrates a practical form of anchorage for the mounting system of the present invention
  • Figure 3 is an exploded perspective view corresponding to Figure 2;
  • Figure 4 is a transverse cross-section through a mounting device according to the invention;
  • FIG. 5 is an end elevation of a mounting system arranged "in-situ" on a flat roof;
  • Figures 6a and 6b are perspective views of mounting frames according to the invention;
  • Figures 7a-7c illustrate alternative stand geometries
  • Figure 8 is a cross-sectional view of an alternative example of a mounting device according to the invention
  • Figures 9a and 9b are cross-sectional views of an alternative example of an anchorage for the mounting system of the present invention.
  • FIG 10 is a cross-sectional view of a fixing arrangement for the alternative anchorage of Figure 9.
  • a structure indicated generally at 2 is required to be mounted on a flat roof surface 4.
  • roof typically comprises an underlying support structure 6, a layer of insulation 8, and a weatherproof covering 10.
  • the structure is supported clear of the surface by legs 12, each of which terminates in a foot 14 comprising a compression pad. These pads are formed with a relatively large area, so as to spread the load on the roof.
  • FIG. 2 illustrates a suitable anchoring structure, which comprises a tie rod 20 of suitable length to extend through the insulation layer 8, mounted on a fixing plate 22 having fixing holes 24 which enable it to be screwed or bolted onto a roof member 26 of the support structure 6, as illustrated more clearly in Figure 3.
  • the upper end the tie rod 22 is threaded for attachment to a plate 28 carrying the anchorage 18, and a sealing member 30, which may for example comprise a suitably shaped piece of roofing felt, is attached to the top of the mounting plate 28.
  • the construction of flat roofs of this kind is such that the insulation layer 8 is generally of a standard thickness, and consequently, the tie rod 20 only needs to made in a few different standard lengths, to enable the mounting plate 28 to be mounted at a suitable level, just above the waterproof membrane 10. Accordingly, the upper end of the rod 20 may be threaded into a blind hole 32 in the base of the mounting plate 28, or, of course, there may be a hole passing right through the plate 28, and the tension rod 20 may be attached by means of a suitable nut, provided that any resultant joint can be suitably sealed.
  • FIG. 4 a practical example of a "space frame" PV mounting system 36 is illustrated, in cross-section in Figure 4 which shows the frame alone i.e. the specific arrangement for mounting a PV module or other solar energy collector, 38.
  • this comprises a primary structural member 40 which, in the example, is a fairly substantial box section, and two channel section members 42 and 44 which are arranged facing one another, and extending parallel to the primary box section 40. All three members are interconnected by a triangulated space frame, an example of which is shown in the perspective view of Figures 6a and 6b, and it will be appreciated that this arrangement provides a very high strength-to-weight ratio.
  • the mounting angle of the solar energy collector 38 to be preset for its location, by suitably dimensioning the interconnecting struts 46 and 48 forming the sides of the triangle, so that when the primary box section structural member 40 is mounted horizontally, the orientation of the frame will automatically be suitable for the latitude of the installation.
  • the frame may also be made up of members of various different cross-sections, depending on the application.
  • the main structural member may be a tube which is rotatably mounted in a collar on the support system so that the frame can be set at different angles.
  • the secondary members, on which the actual solar collection device is mounted may also be of other cross-sections such as L- shaped or simply flat strips so as to allow a variety of different fixing methods to be employed.
  • the spacing between the members can also be varied to allow for different size panels or different fixing methods.
  • the frame may also be made in various different widths and lengths. For example, the frame shown in Figure 6b is approximately 6 metres in length.
  • outwardly extending legs 50, 52 are attached to the primary structural member 40 at intervals along its length, and are terminated at their lower ends with pads 54, 56, which in turn rest on the upper surface of a flat roof 4.
  • a mounting eye 58 is fixed on the underneath surface of the member 40, and is connected to an anchorage 18 on the roof, by means of a tension member 60 which can for example be a polymer cable.
  • the interconnection between the anchorage point 18, and the roof corresponds to that described above with reference to Figures 2 and 3, and accordingly, will not be described in detail here.
  • the support frame may be relatively long, as shown in Figures 6a and 6b. If that is the case, it will be preferable to provide two anchorage points 18, spaced-apart towards the end of the structure, in order to stabilise it properly against possible movement under the influence of weather, for example.
  • a single fixing point can be situated in the centre of the frame, with multiple frames mechanically joined by, for example, a flange, to prevent rotation of the frames. It will be appreciated that this enables a relatively large structure to be fixed firmly into position, without the need for a large number of fixings, or the addition of unwieldy ballast to hold it in the desired position.
  • each module may be equipped with a built-in inverter, for example a "string inverter” set up for its respective solar array, so that additional arrays can simply be connected in parallel with one another.
  • a built-in inverter for example a "string inverter” set up for its respective solar array, so that additional arrays can simply be connected in parallel with one another.
  • each frame would be designed such that it matched the electrical requirements of the inverter. For example a 30OkW inverter might require 25 parallel strings of 24 PV modules attached in series. A frame in this case could have 8, 12, or 24 modules, meaning that 3, 2 or just one frame would be required to create a string. This would simplify the design of the electrical connections.
  • Figures 7a-7c illustrate some diagrammatic examples of further possible stand-off mounting arrangements which are relatively self-explanatory, the main parts being referenced similarly to those in Figure 1.
  • Figures 7a Although it is desirable to have at least two legs (Figure 7a) with suitable skid-shaped feet 14 it is also feasible to utilise a "braced cantilever" geometry in which there is only one stiff leg (Figures 7b and 7c) and the spaced-apart foot portions extend away from it in the form of a single ring (7b) or two splayed apart feet (7c). Both of these arrangements provide suitable spaced-apart foot portions so that the anchorage (18) on the roof surface can be suitably arranged between them to tension the stand against the surface.
  • Figure 8 shows another example of a PV mounting system 36 in which one of the channel section members 42,44 ( Figure 4) is replaced by a clamping arrangement comprising first and second folded sheets 62, 64.
  • the folded sheets 62, 64 are arranged such that the PV module or other solar energy collector 38 can be securely clamped therebetween.
  • the folded sheets 62, 64 extend parallel to the primary box section 40 ( Figure 4).
  • the folded sheets are clamped together by way of a nut 66 and a corresponding bolt 68 which extends through a slot 70 in one of the folded sheets 62, 64.
  • the sheets 62, 64 may be made from aluminium.
  • an anchorage 72 for securing the structure (not shown) to the roof structure or member 26 is shown.
  • the anchorage 72 which includes a mount, is secured to the roof member 26 by means of screws 74 or roofers' fixings of a suitable length which pass through an intermediate, or sandwiched, panel 76.
  • the intermediate panel 76 preferably comprises a composite panel roof deck.
  • a suitable sealing method, for instance butyl tape, silicon, washers or gaskets, 78 may be provided between the head 80 of the screws 74 and an upper surface of the panel 76.
  • the anchorage 72 comprises a plate that sits on a roof 76 and is fixed to the structural member 26 below the roof without compromising the weather tightness of the roof.
  • the anchorage may be compressible so that, if stood upon, tearing of the membrane can be prevented.
  • a fixing arrangement 82 for securing the anchorage 72 to the roof member 26 is shown.
  • additional screws 84 may be provided so as to fix the panel 76 directly to the structural member 26.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Photovoltaic Devices (AREA)

Abstract

L'invention concerne un support de fixation destiné à supporter un panneau solaire ou un autre dispositif capteur d'énergie solaire sur une surface de fixation, qui comprend un corps, lequel comprend un moyen de mise à distance destiné à supporter le corps à distance de la surface, et un dispositif de tension conçu pour être connecté entre le corps et la surface de fixation, de façon à tenir le moyen de mise à distance fixé en contact avec la surface. Le corps comprend de préférence une structure spatiale triangulaire constituée de trois éléments parallèles, l'un de ces éléments possédant un moyen de mise à distance formant des pieds tandis que les deux autres forment une fixation pour le dispositif capteur d'énergie solaire.
PCT/GB2007/001173 2006-03-31 2007-03-30 Système de fixation de panneau solaire WO2007113514A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0606576A GB2436614A (en) 2006-03-31 2006-03-31 A mounting for a solar energy collector
GB0606576.7 2006-03-31

Publications (2)

Publication Number Publication Date
WO2007113514A2 true WO2007113514A2 (fr) 2007-10-11
WO2007113514A3 WO2007113514A3 (fr) 2008-03-27

Family

ID=36425059

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/001173 WO2007113514A2 (fr) 2006-03-31 2007-03-30 Système de fixation de panneau solaire

Country Status (3)

Country Link
US (1) US20070246039A1 (fr)
GB (1) GB2436614A (fr)
WO (1) WO2007113514A2 (fr)

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EP0076455A2 (fr) * 1981-10-01 1983-04-13 Joachim Wenzel Centrale solaire
US4832001A (en) * 1987-05-28 1989-05-23 Zomeworks Corporation Lightweight solar panel support
WO1992020893A1 (fr) * 1991-05-13 1992-11-26 Kroetz Thomas Dispositif antieblouissant pour batiments
DE19906464A1 (de) * 1999-02-16 2000-08-17 Jonathan Fuersch Vorrichtung zum Erzeugen elektrischen Stroms durch photovoltaische plattenförmige Module auf einem Gestell in schräger Lage befestigt
DE20011063U1 (de) * 2000-06-23 2000-09-21 Schueco Int Kg Montagevorrichtung für Solarkollektoren auf ebenen Flächen
DE20014536U1 (de) * 2000-08-23 2000-11-02 Thyssen Bausysteme Gmbh Dachdeckung oder Wandverkleidung aus selbsttragenden Metallblechpaneelen mit außenseitig aufgebrachten Photovoltaik-Solarmodulen und einem unterseitigen System zur geregelten Wärmeab- und/oder -zufuhr
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