US20090236074A1 - Composite Insulating Panel - Google Patents

Composite Insulating Panel Download PDF

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Publication number
US20090236074A1
US20090236074A1 US12/227,855 US22785507A US2009236074A1 US 20090236074 A1 US20090236074 A1 US 20090236074A1 US 22785507 A US22785507 A US 22785507A US 2009236074 A1 US2009236074 A1 US 2009236074A1
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United States
Prior art keywords
panel
sheet
recess
heat
width
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US12/227,855
Inventor
Gregory Flynn
James Carolan
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Kingspan Research and Developments Ltd
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Kingspan Research and Developments Ltd
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Assigned to KINGSPAN RESEARCH AND DEVELOPMENT LIMITED reassignment KINGSPAN RESEARCH AND DEVELOPMENT LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CAROLAN, JAMES, FLYNN, GREGORY
Publication of US20090236074A1 publication Critical patent/US20090236074A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/44—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose
    • E04C2/52—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose with special adaptations for auxiliary purposes, e.g. serving for locating conduits
    • E04C2/521—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose with special adaptations for auxiliary purposes, e.g. serving for locating conduits serving for locating conduits; for ventilating, heating or cooling
    • E04C2/525—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose with special adaptations for auxiliary purposes, e.g. serving for locating conduits serving for locating conduits; for ventilating, heating or cooling for heating or cooling
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/292—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and sheet metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
    • E04C2/322—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material with parallel corrugations
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/35—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation
    • E04D3/351—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation at least one of the layers being composed of insulating material, e.g. fibre or foam material
    • E04D3/352—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation at least one of the layers being composed of insulating material, e.g. fibre or foam material at least one insulating layer being located between non-insulating layers, e.g. double skin slabs or sheets
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/35—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation
    • E04D3/351—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation at least one of the layers being composed of insulating material, e.g. fibre or foam material
    • E04D3/355—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation at least one of the layers being composed of insulating material, e.g. fibre or foam material the insulating layers of adjacent slabs having cooperating edges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/35—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation
    • E04D3/357—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation comprising hollow cavities
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/35—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation
    • E04D3/358—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation with at least one of the layers being offset with respect to another layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
    • F24S20/66—Solar heat collectors integrated in fixed constructions, e.g. in buildings in the form of facade constructions, e.g. wall constructions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
    • F24S20/67—Solar heat collectors integrated in fixed constructions, e.g. in buildings in the form of roof constructions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/60—Details of absorbing elements characterised by the structure or construction
    • 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
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/60—Planning or developing urban green infrastructure
    • 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
    • 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

  • This invention is directed towards providing an improved insulating panel which will address this issue.
  • a composite insulating panel comprising a first sheet, a second sheet, insulating foam between the first and second sheets, and heat collecting means within the panel for transfer of heat from one source to another.
  • the heat collecting means comprises conduit means for containing a beat transfer medium.
  • the conduit means may comprise a plurality of tubes extending through the panel.
  • the conduit means may be located adjacent to the first sheet and/or adjacent to the second sheet.
  • the first sheet is profiled to define a plurality of recesses, the heat collecting means extending through at least portion of at least some of the recesses.
  • the second sheet may be profiled to define a plurality of recesses, the heat collecting means extending through at least portion of some of the recesses.
  • At least some of the recesses contain the heat collection means.
  • Conduit means may extend through at least some of the recesses.
  • At least some of the recesses define a pathway for air circulation.
  • the recess defined by at least some of the profiles may be substantially free of insulating foam.
  • the profile is formed in an external sheet of the panel.
  • the external sheet may comprise a plurality of laterally spaced-apart crowns.
  • the recess has a cross sectional area of at least 0.002 m 2 , most preferably at least 0.0025 m 2 , and about 0.003 m 2 .
  • the recess has an exposed surface, the width of the exposed surface being from 150 mm to 200 mm, preferably from 160 mm to 180 mm, and about 170 mm.
  • the exposed surface comprises an outer face and a pair of side faces which diverge inwardly from the outer face.
  • the angle between the outer face and each side face may be from 115° to 125°, preferably from 118° to 123°, and about 121°.
  • the width of the outer face is from 50 mm to 60 mm.
  • the width of the outer face may be about 55 mm.
  • each side face is from 50 mm to 60 mm.
  • the width of each side face may be about 57 mm.
  • the panel comprises at least 3 crowns.
  • the panel may comprise at least 4 crowns.
  • the barrier may extend across the inwardly facing opening of the recess.
  • the barrier may be a seal, a tape, or the like.
  • the panel comprises a roof panel.
  • the panel comprises a wall panel.
  • the panel may also be a floor panel.
  • the invention also provides a heating or cooling system comprising at least one panel of the invention.
  • a heat transfer medium is circulated through the panel.
  • the heat transfer medium may be air.
  • the system may comprise duct means for collecting and directing air which is passing through the panel.
  • the system may have air circulating means such as a fan for circulating air to or from the panel or duct.
  • FIG. 1 is a cross sectional view of an insulating panel of the invention
  • FIG. 2 is an enlarged view of portion of the panel of FIG. 1 ;
  • FIG. 3 is a cross sectional view of an insulating panel according to another embodiment of the invention.
  • FIG. 4 is a cross sectional view of a further panel according to the invention.
  • FIG. 5 is a cross sectional view of a composite insulating panel according to the invention.
  • FIG. 5( a ) is a cross sectional view of another composite panel
  • FIG. 5( b ) is an enlarged view of a crown of the panel of FIG. 5 ;
  • FIGS. 6 and 7 are cross sectional views illustrating an overlap joint between adjacent panels of FIG. 5 ;
  • FIG. 8 is a plan cross sectional view of a building comprising a plurality of panels of the invention.
  • FIG. 9 is a cross sectional view of a top corner of the building of FIG. 8 ;
  • FIG. 10 is a cross sectional view of another corner of the building of FIG. 8 .
  • the roof panel 1 comprises a first sheet which in this case is a profiled external sheet 2 which may be of painted galvanized steel.
  • the profile defines recesses.
  • the profile in this case comprises a plurality of raised crowns 3 which in this case are of generally trapezoidal form and extend longitudinally along the length of the panel.
  • the panel also comprises a second sheet which in this case is an inner metal liner sheet 4 .
  • the panel has an integral heat collecting means for transfer of heat from one source to another.
  • the heat collecting means are provided in the crowns 3 of the external sheet which may be devoid of insulation 5 .
  • Conduits 8 in this case extend through the crowns 3 and a heat transfer medium such as water is circulated through the conduits 8 .
  • solar heat illustrated diagrammatically as 9 is transferred and used, for example, to provide hot water for washing and the like.
  • the heat transfer medium may be any suitable fluid such as water, refrigerant or anti-freeze solution.
  • the conduits 8 run through the roof in the external envelope of the building and the medium absorbs solar energy. The warmed medium may be pumped back through the system into the building to provide heat to the building space. Once the medium passes through the building and transfers its energy, it flows back to the roof conduit and the process is repeated in a closed loop.
  • the heat collecting means is in the form of conduits 21 through which a heat transfer medium is circulated.
  • the conduits 21 are in this case located adjacent to the internal liner 4 .
  • the system may be used to extract heat 22 rising from the building, especially in environments where equipment and machines give off heat, causing the internal temperature to rise. This system can be used to help keep the building cool in summer and heat it up in winter. In the summertime, a coolant may be circulated.
  • a valving system may be provided to switch from heating to cooling cycles. Extracted heat can be used as described above to heat a supply of hot water.
  • FIG. 4 there is illustrated another panel 17 according to the invention which is similar to the panels of FIGS. 1 to 3 and like parts are assigned the same reference numerals.
  • inner conduits 21 through which a beat transfer medium is circulated (for example to extract heat from inside a building) and outer conduits 8 for collection of solar heat 9 .
  • Such a system may be used as part of a heating/cooling/ventilation system for a building.
  • FIGS. 5 , 5 b, 6 and 7 there is illustrated another panel 29 according to the invention which is similar to the panel of FIGS. 1 and 2 and like parts are assigned the same reference numerals.
  • the recess is defined by the crowns.
  • Air is circulated through crowns 3 which are not filled with insulating foam and thereby define passageways 19 .
  • the circulating air is again heated by solar energy. This hot air is captured and may be blown by small fans into the heating/ventilation ductwork of the building, again assisting in heating the building.
  • the heated air may also or alternatively be circulated through a heat exchanger for transfer of solar heat to another heat collector.
  • Another panel of this type is illustrated in FIG. 5( a ) but with smaller crowns 3 .
  • Air is circulated through the crowns 3 which are not filled with insulating foam.
  • Such panels are usually manufactured by leading the profiled outer sheet 2 along a flat bed with the recesses defined by the crowns 3 facing upwards. The profiled sheet is let to a lay-down area at which liquid foam reactants are spread across the sheet using a lay-down poker or the like. As the foam rise the backing sheet is applied over the foam and the sandwich this formed is then led through an oven and subsequently cut to length.
  • the manufacturing technology is described in our UK-A-2227712, UK-A-2257086, and UK-A-2325640.
  • foam is excluded from at least some of the recesses defined by the crowns 3 .
  • This may be achieved in a number of ways.
  • a seal or tape 25 may be laid across the recesses defined by the crowns 3 prior to foam lay-down.
  • a lost core may be inserted into the recesses defined by the crowns 3 and subsequently removed leaving the recesses substantially fee of foam.
  • each of the crowns 3 defines an area which is devoid of foam.
  • the void area A is preferably at least 0.002 m 2 , most preferably greater than 0.0025 m 2 , and in this case about 0.003 m 2 .
  • the faces of the crown 3 which are exposed to the external environment comprise an outer face x and two side faces y which diverge inwardly from the outer face x.
  • the angle ⁇ between the faces x, y is preferably 115° to 125°, most preferably 118° to 123° and in this case about 121°.
  • each crown 3 is from 150 mm to 200 mm, most preferably 160 mm to 180 mm, and in this case about 170 mm.
  • the outer face x has a width Wx of from 50 mm to 60 mm, in this case about 55 mm.
  • Each side facing has a width Wy of from 50 mm to 60 mm, in this case about 57 mm.
  • each of the foam-free crowns has a cross sectional area of 0.002906 m 2 .
  • the foam-free crowns each have a cross sectional area of 0.001603 m 2 .
  • the panels may be used to construct part of or all of the building envelope including the roof, walls and/or floor.
  • One such building is illustrated in FIGS. 8 to 10 .
  • Each of the walls and the roof of the building comprise a plurality of the panels such as the panels 29 of FIG. 5 .
  • Air circulating through the passageways defined by the crowns 3 is directed into ducting 30 as shown by the arrows.
  • the flow of air may be controlled using one or more fans 31 .
  • the ducting may have a venting system 32 which may be motorized to facilitate ease of operation and control.
  • the circulating air is heated by solar energy. This hot air is captured and may be passed into the heating/ventilation ductwork of the building, again assisting in heating the building.
  • the heated air may also alternatively be circulated through a heat exchange for transfer of solar heat to another heat collector.
  • the system may be set to take air from the warmest or coldest elevations depending on the internal and external temperatures. The system can be used for heating and/or cooling
  • suitable insulated cappings 35 may be provided.
  • the building may also have insulated flashings 36 .

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Building Environments (AREA)

Abstract

A composite insulating panel (17) comprises a profiled external sheet (2) having a plurality of raised crowns (3) of generally trapezoidal form, an inner liner sheet (4) and a body of insulating foam (5) between the sheets (2, 4). The panel (1) has an integral heat collecting means for transfer of heat from one source to another. In one case there are inner conduit (21) through which a heat transfer medium is circulated to extract heat from inside a building and outer conduits (8) for collection of solar heat (9). The panel (17) may be used as part of a heating/cooling/ventilation system.

Description

    INTRODUCTION
  • With increasing energy costs there is a need for optimizing heat transfer to and from a building.
  • This invention is directed towards providing an improved insulating panel which will address this issue.
    • STATEMENTS OF INVENTION
  • According to the invention there is provided a composite insulating panel comprising a first sheet, a second sheet, insulating foam between the first and second sheets, and heat collecting means within the panel for transfer of heat from one source to another.
  • In one embodiment the heat collecting means comprises conduit means for containing a beat transfer medium. The conduit means may comprise a plurality of tubes extending through the panel. The conduit means may be located adjacent to the first sheet and/or adjacent to the second sheet.
  • In one case the first sheet is profiled to define a plurality of recesses, the heat collecting means extending through at least portion of at least some of the recesses. Alternatively or additionally the second sheet may be profiled to define a plurality of recesses, the heat collecting means extending through at least portion of some of the recesses.
  • Preferably at least some of the recesses contain the heat collection means.
  • Conduit means may extend through at least some of the recesses.
  • In one embodiment at least some of the recesses define a pathway for air circulation.
  • The recess defined by at least some of the profiles may be substantially free of insulating foam.
  • In one case the profile is formed in an external sheet of the panel. The external sheet may comprise a plurality of laterally spaced-apart crowns.
  • In a preferred embodiment the recess has a cross sectional area of at least 0.002 m2, most preferably at least 0.0025 m2, and about 0.003 m2.
  • In one embodiment the recess has an exposed surface, the width of the exposed surface being from 150 mm to 200 mm, preferably from 160 mm to 180 mm, and about 170 mm.
  • In one embodiment the exposed surface comprises an outer face and a pair of side faces which diverge inwardly from the outer face.
  • The angle between the outer face and each side face may be from 115° to 125°, preferably from 118° to 123°, and about 121°.
  • In one embodiment the width of the outer face is from 50 mm to 60 mm. The width of the outer face may be about 55 mm.
  • In one embodiment the width of each side face is from 50 mm to 60 mm. The width of each side face may be about 57 mm.
  • Preferably, the panel comprises at least 3 crowns. The panel may comprise at least 4 crowns.
  • There may be a barrier between the recess and the insulating foam. The barrier may extend across the inwardly facing opening of the recess. The barrier may be a seal, a tape, or the like.
  • In one case the panel comprises a roof panel.
  • In another case the panel comprises a wall panel.
  • The panel may also be a floor panel.
  • The invention also provides a heating or cooling system comprising at least one panel of the invention.
  • In one embodiment a heat transfer medium is circulated through the panel. The heat transfer medium may be air.
  • The system may comprise duct means for collecting and directing air which is passing through the panel. The system may have air circulating means such as a fan for circulating air to or from the panel or duct.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention will be more clearly understood from the following description thereof given by way of example only, in which:—
  • FIG. 1 is a cross sectional view of an insulating panel of the invention;
  • FIG. 2 is an enlarged view of portion of the panel of FIG. 1;
  • FIG. 3 is a cross sectional view of an insulating panel according to another embodiment of the invention;
  • FIG. 4 is a cross sectional view of a further panel according to the invention;
  • FIG. 5 is a cross sectional view of a composite insulating panel according to the invention;
  • FIG. 5( a) is a cross sectional view of another composite panel;
  • FIG. 5( b) is an enlarged view of a crown of the panel of FIG. 5;
  • FIGS. 6 and 7 are cross sectional views illustrating an overlap joint between adjacent panels of FIG. 5;
  • FIG. 8 is a plan cross sectional view of a building comprising a plurality of panels of the invention;
  • FIG. 9 is a cross sectional view of a top corner of the building of FIG. 8; and
  • FIG. 10 is a cross sectional view of another corner of the building of FIG. 8.
    •  DETAILED DESCRIPTION
  • Referring to the drawings and initially to FIGS. 1 and 2 thereof there is illustrated an insulating panel according to the invention which in this case is a roof panel 1. The roof panel 1 comprises a first sheet which in this case is a profiled external sheet 2 which may be of painted galvanized steel. The profile defines recesses. The profile in this case comprises a plurality of raised crowns 3 which in this case are of generally trapezoidal form and extend longitudinally along the length of the panel. The panel also comprises a second sheet which in this case is an inner metal liner sheet 4. There is insulating foam 5 between the inner and outer sheets 2, 4.
  • The panel has an integral heat collecting means for transfer of heat from one source to another. In this case the heat collecting means are provided in the crowns 3 of the external sheet which may be devoid of insulation 5. Conduits 8 in this case extend through the crowns 3 and a heat transfer medium such as water is circulated through the conduits 8. In this way solar heat illustrated diagrammatically as 9 is transferred and used, for example, to provide hot water for washing and the like. The heat transfer medium may be any suitable fluid such as water, refrigerant or anti-freeze solution. The conduits 8 run through the roof in the external envelope of the building and the medium absorbs solar energy. The warmed medium may be pumped back through the system into the building to provide heat to the building space. Once the medium passes through the building and transfers its energy, it flows back to the roof conduit and the process is repeated in a closed loop.
  • Referring to FIG. 3 there is illustrated another panel 20 according to the invention. In this case the heat collecting means is in the form of conduits 21 through which a heat transfer medium is circulated. The conduits 21 are in this case located adjacent to the internal liner 4. The system may be used to extract heat 22 rising from the building, especially in environments where equipment and machines give off heat, causing the internal temperature to rise. This system can be used to help keep the building cool in summer and heat it up in winter. In the summertime, a coolant may be circulated. A valving system may be provided to switch from heating to cooling cycles. Extracted heat can be used as described above to heat a supply of hot water.
  • Referring to FIG. 4 there is illustrated another panel 17 according to the invention which is similar to the panels of FIGS. 1 to 3 and like parts are assigned the same reference numerals. In this case there are inner conduits 21 through which a beat transfer medium is circulated (for example to extract heat from inside a building) and outer conduits 8 for collection of solar heat 9. Such a system may be used as part of a heating/cooling/ventilation system for a building.
  • Referring to FIGS. 5, 5 b, 6 and 7 there is illustrated another panel 29 according to the invention which is similar to the panel of FIGS. 1 and 2 and like parts are assigned the same reference numerals. In this case the recess is defined by the crowns. Air is circulated through crowns 3 which are not filled with insulating foam and thereby define passageways 19. The circulating air is again heated by solar energy. This hot air is captured and may be blown by small fans into the heating/ventilation ductwork of the building, again assisting in heating the building. The heated air may also or alternatively be circulated through a heat exchanger for transfer of solar heat to another heat collector. Another panel of this type is illustrated in FIG. 5( a) but with smaller crowns 3.
  • Air is circulated through the crowns 3 which are not filled with insulating foam. Such panels are usually manufactured by leading the profiled outer sheet 2 along a flat bed with the recesses defined by the crowns 3 facing upwards. The profiled sheet is let to a lay-down area at which liquid foam reactants are spread across the sheet using a lay-down poker or the like. As the foam rise the backing sheet is applied over the foam and the sandwich this formed is then led through an oven and subsequently cut to length. The manufacturing technology is described in our UK-A-2227712, UK-A-2257086, and UK-A-2325640.
  • In the panels of the invention foam is excluded from at least some of the recesses defined by the crowns 3. This may be achieved in a number of ways. For example, a seal or tape 25 may be laid across the recesses defined by the crowns 3 prior to foam lay-down. Alternatively a lost core may be inserted into the recesses defined by the crowns 3 and subsequently removed leaving the recesses substantially fee of foam.
  • We have found that the panel of FIG. 5 is particularly suitable for roofs, walls and for floors. The panel has a relatively large exposed surface area and a relatively high large internal void space whilst maintaining structural and insulation properties. The width L of the panel in this case is 1 metre. For optimum thermal efficiency there should be at least 3 and preferably at least 4 crowns 3. Referring especially to FIG. 5( b), each of the crowns 3 defines an area which is devoid of foam. The void area A is preferably at least 0.002 m2, most preferably greater than 0.0025 m2, and in this case about 0.003 m2.
  • The faces of the crown 3 which are exposed to the external environment comprise an outer face x and two side faces y which diverge inwardly from the outer face x. The angle α between the faces x, y is preferably 115° to 125°, most preferably 118° to 123° and in this case about 121°.
  • The width of the exposed surface of each crown 3 is from 150 mm to 200 mm, most preferably 160 mm to 180 mm, and in this case about 170 mm. the outer face x has a width Wx of from 50 mm to 60 mm, in this case about 55 mm. Each side facing has a width Wy of from 50 mm to 60 mm, in this case about 57 mm.
  • In the panel of FIG. 5 each of the foam-free crowns has a cross sectional area of 0.002906 m2.
  • By way of comparison, in the panel of FIG. 5( a) the foam-free crowns each have a cross sectional area of 0.001603 m2.
  • The energy production possible using panels with crowns of this type was calculated using RET screen International Clean Energy Project Analysis software available at www.retscreen.net. The following assumptions were made:
  •
    Building Location: North West England
    Building Size: 10 m × 100 m × 100 m = 10,000 m2 floor space
    South Facing Wall: 100 m (W) × 10 m (H)
    Fan Air Speed: 10 m/sec
  • Using the panels to construct the south facing wall of the building and circulating air through the foam-free passageways results in the following energy production:
  •
    Panel of FIG. 5(a) with two crowns: 125,569 kWh per year based on
    local weather data.
    Panel of FIG. 5 with four crowns: 347,647 kWh per year based on
    local weather data.
  • Using a panel with enlarged foam-free crowns greatly enhances energy production.
  • The panels may be used to construct part of or all of the building envelope including the roof, walls and/or floor. One such building is illustrated in FIGS. 8 to 10. Each of the walls and the roof of the building comprise a plurality of the panels such as the panels 29 of FIG. 5. Air circulating through the passageways defined by the crowns 3 is directed into ducting 30 as shown by the arrows. The flow of air may be controlled using one or more fans 31. The ducting may have a venting system 32 which may be motorized to facilitate ease of operation and control. The circulating air is heated by solar energy. This hot air is captured and may be passed into the heating/ventilation ductwork of the building, again assisting in heating the building. The heated air may also alternatively be circulated through a heat exchange for transfer of solar heat to another heat collector. The system may be set to take air from the warmest or coldest elevations depending on the internal and external temperatures. The system can be used for heating and/or cooling.
  • Referring especially to FIGS. 9 and 10 suitable insulated cappings 35 may be provided. The building may also have insulated flashings 36.
  • May variations on the embodiments described will be readily apparent. Accordingly the invention is not limited to the embodiments hereinbefore described which may be varied in detail.

Claims (38)

1-43. (canceled)
44. A composite insulating panel comprising a first sheet, a second sheet, insulating foam between the first and second sheets, and heat collecting means within the panel for transfer of heat from one source to another.
45. The panel as claimed in claim 44 wherein the heat collecting means comprises conduit means for containing a heat transfer medium.
46. The panel as claimed in claim 45 wherein the conduit means comprises a plurality of tubes extending through the panel.
47. The panel as claimed in claim 46 wherein the conduit means are located adjacent to the first sheet.
48. The panel as claimed in claim 46 wherein the conduit means are located adjacent to the second sheet.
49. The panel as claimed in claim 44 wherein the first sheet is profiled to define a plurality of recesses, the heat collecting means extending through at least portion of at least some of the recesses.
50. The panel as claimed in claim 44 wherein the second sheet is profiled to define a plurality of recesses, the heat collecting means extending through at least portion of some of the crowns.
51. The panel as claimed in claim 49 wherein at least some of the recesses contain the heat collection means.
52. The panel as claimed in claim 49 wherein conduit means extend through at least some of the recesses.
53. The panel as claimed in claim 49 wherein at least some of the recesses define a pathway for air circulation.
54. The panel as claimed in claim 49 wherein the recess defined by at least some of the profile is substantially free of insulating foam.
55. The panel as claimed in claim 49 wherein the recess is defined by a crown formed in an external sheet of the panel.
56. The panel as claimed in claim 55 wherein the external sheet comprises a plurality of laterally spaced-apart crowns.
57. The panel as claimed in claim 49 wherein the recess has a cross sectional area of at least 0.002 m2.
58. The panel as claimed in claim 49 wherein the recess has a cross sectional area of at least 0.0025 m2.
59. The panel as claimed in claim 49 wherein the recess has a cross sectional area of approximately 0.003 m2.
60. The panel as claimed in claim 49 wherein the profile defining the recess has an exposed surface, the width of the exposed surface being from 150 mm to 200 mm.
61. The panel as claimed in claim 60 wherein the width of the exposed surface is from 160 mm to 180 mm.
62. The panel as claimed in claim 60 wherein the width of the exposed surface is about 170 mm.
63. The panel as claimed in claim 60 wherein the exposed surface comprises an outer face and a pair of side faces which diverge inwardly from the outer face.
64. The panel as claimed in claim 63 wherein the angle between the outer face and each side face is from 115° to 125°.
65. The panel as claimed in claim 64 wherein the angle between the outer face and each side face is from 118° to 123°.
66. The panel as claimed in claim 64 wherein the angel between the outer face and each side face is about 121°.
67. The panel as claimed in claim 63 wherein the width of the outer face is from 50 mm to 60 mm.
68. The panel as claimed in claim 67 wherein the width of the outer face is about 55 mm.
69. The panel as claimed in claim 63 wherein the width of each side face is from 50 mm to 60 mm.
70. The panel as claimed in claim 69 wherein the width of each side face is about 57 mm.
71. The panel as claimed in claim 49 wherein the panel comprises at least 3 crowns.
72. The panel as claimed in claim 49 wherein the panel comprises at least 4 crowns.
73. The panel as claimed in claim 54 comprising a barrier between the recess and the insulating foam.
74. The panel as claimed in claim 73 wherein the barrier extends across the inwardly facing opening of the recess.
75. The panel as claimed in claim 73 wherein the barrier comprises a seal.
76. The panel as claimed in claim 73 wherein the barrier comprises a tape.
77. The panel as claimed in claim 44 wherein the panel comprises a roof panel.
78. The panel as claimed in claim 44 wherein the panel comprises a wall panel.
79. The panel as claimed in claim 44 wherein the panel comprise a floor panel.
80. The heating or cooling system comprising at least one panel as claimed in claim 44.
US12/227,855 2006-06-13 2007-06-12 Composite Insulating Panel Abandoned US20090236074A1 (en)

Applications Claiming Priority (5)

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IE2006/0443 2006-06-13
IE20060443 2006-06-13
IE20070145 2007-03-06
IE2007/0145 2007-03-06
PCT/IE2007/000057 WO2007144863A1 (en) 2006-06-13 2007-06-12 A composite insulating panel

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US (1) US20090236074A1 (en)
EP (1) EP2027350A1 (en)
AU (1) AU2007258786A1 (en)
CA (1) CA2654373A1 (en)
GB (1) GB2439191B (en)
WO (1) WO2007144863A1 (en)

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GB2439191B (en) 2011-04-27
CA2654373A1 (en) 2007-12-21
GB0711248D0 (en) 2007-07-18
IE20070416A1 (en) 2008-02-06
AU2007258786A1 (en) 2007-12-21
GB2439191A (en) 2007-12-19
WO2007144863A1 (en) 2007-12-21
EP2027350A1 (en) 2009-02-25

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