WO2012161765A1 - Ensemble éclairage naturel isolé - Google Patents

Ensemble éclairage naturel isolé Download PDF

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Publication number
WO2012161765A1
WO2012161765A1 PCT/US2012/025569 US2012025569W WO2012161765A1 WO 2012161765 A1 WO2012161765 A1 WO 2012161765A1 US 2012025569 W US2012025569 W US 2012025569W WO 2012161765 A1 WO2012161765 A1 WO 2012161765A1
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WO
WIPO (PCT)
Prior art keywords
assembly
roof curb
daylighting
glass unit
roof
Prior art date
Application number
PCT/US2012/025569
Other languages
English (en)
Inventor
S. Riaz HASAN
Terence O'CONNOR
Michael Sexton
Original Assignee
Firestone Building Products Co., LLC
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 Firestone Building Products Co., LLC filed Critical Firestone Building Products Co., LLC
Publication of WO2012161765A1 publication Critical patent/WO2012161765A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
    • E04D13/0305—Supports or connecting means for sky-lights of flat or domed shape
    • E04D13/0315—Supports or connecting means for sky-lights of flat or domed shape characterised by a curb frame
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
    • E04D13/033—Sky-lights; Domes; Ventilating sky-lights provided with means for controlling the light-transmission or the heat-reflection, (e.g. shields, reflectors, cleaning devices)
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
    • E04D13/0335—Skylight guards, security devices protecting skylights or preventing objects or persons from falling through skylight openings

Definitions

  • the insulated daylighting assembly may include an insulating glass unit positioned on the interior side of a daylighting dome to improve the thermal resistance of the assembly.
  • Daylighting systems are used in both residential and commercial settings to provide natural light to the interior of a structure.
  • the use of natural light as opposed to electric lighting options, reduces costs, especially when used in conjunction with a lighting control usage system, such as infrared motion sensors, photo sensors, ect.
  • Natural light may also provide improved lighting within the building as compared to electric lighting systems alone.
  • Daylighting systems often incorporate windows, skylights, and/or daylighting domes positioned in the roof of the structure, which may include glass or composite domed panels that allow light to penetrate into the building.
  • the system may also include structural curb supports to which the daylighting dome is mounted, and waterproofing components, such as flashings that seal the system against water infiltration. While these daylighting domes are effective at light transmission, they often have very low thermal resistance (e.g. R-2), resulting in unwanted heat transfer though the daylighting assemblies, potentially increasing heating and cooling costs.
  • R-2 thermal resistance
  • the low thermal resistance of daylighting domes makes them less desirable in many circumstances. For example, in a cold-storage warehouse or freezer, the heat transfer through the daylighting dome to the warmer exterior of the building increases the cost of maintaining the interior temperature.
  • use of electric lights is also not ideal because electric lights produce additional convective heat, often of a greater magnitude than the solar heat gain from the daylighting dome, and they also involve the consumption of electricity while operating.
  • the low thermal resistance of daylighting domes may also present disadvantages in other circumstances and situations, thereby limiting the use of the systems.
  • an insulated daylighting assembly includes a roof curb adapted to be positioned on a roof substrate around an opening; a daylighting dome secured to the roof curb; and a thermally resistant glass unit for reducing thermal transfer between the daylighting dome and the opening in the substrate.
  • an insulated daylighting assembly includes an insulated roof curb including an outwardly extending top flange and an outwardly extending bottom flange; a thermally resistant glass unit positioned over the top flange of the roof curb; a daylighting dome positioned over the thermally resistant glass unit and secured to the roof curb; and a fall-protection screen secured to the bottom flange of the roof curb.
  • a method of installing an insulated daylighting assembly includes the steps of securing a roof curb around an opening in a roof substrate; positioning a thermally resistant glass unit adjacent to the roof curb so that the glass unit covers the opening; and securing a daylighting dome to the roof curb.
  • FIG. 1 is perspective view of an insulated daylighting assembly according to the concepts of the present disclosure
  • FIG. 2 is a top view of the insulated daylighting assembly of Fig. 1;
  • FIG. 3 is a side view of the insulated daylighting assembly of Fig. 1;
  • Fig. 4 is a section view of the insulated daylighting assembly of Fig. 1 taken generally along line 4-4 of Fig. 3;
  • Fig. 5 is an enlarged section view of a portion of the insulated daylighting assembly as indicated in Fig. 4;
  • Fig. 6 is a section view of a thermally resistant glass unit suitable for use in embodiments of the insulated daylighting assembly of the present invention.
  • Fig. 7 is a section view of an alternative thermally resistant glass unit suitable for use in embodiments of the insulated daylighting assembly of the present invention.
  • the daylighting dome may provide improved light transfer at low sun-angles, improved strength, and reduced weight as compared to conventional glass unit skylights.
  • the daylighting dome may be secured over a roof curb that is positioned around or within an opening in the roof surface.
  • the thermally resistant glass unit may be positioned within, above, or below the roof curb, and may include a hermetic thermal seal or gasket to prevent thermal transfer around the glass unit from the building's interior to the exterior, or from the exterior to the interior.
  • one or more louvered vents may be provided in the daylighting dome frame to prevent the buildup of condensation.
  • the thermally resistant glass unit allows for a visible light transmittance that is equal to or greater than the visible light transmittance allowed by the daylighting dome.
  • the thermally resistant glass unit provides a technologically useful increase in thermal resistance as compared to the daylighting dome alone, and thereby allows for use of the insulated daylighting assembly in environments that otherwise might not be suitable for daylighting systems.
  • Insulated daylighting assembly 10 includes a daylighting dome 12 positioned over a roof curb 14 that is structurally mounted to a roof substrate 15 around an opening 16 in the substrate. Opening 16 may be of any desired size and shape, but is most often rectangular in shape with a width of between approximately 2 and 5 ft. and a length of between approximately 4 and 8 ft.
  • the roof curb 14 may include a plurality of connected walls, or a single circular wall, defining an inner area. Roof curb 14 may be manufactured in a size and shape to fit in or around opening 16 or may be built on site to the desired dimensions, and may be made of metal, wood, or other suitable materials. In certain embodiments, the roof curb 14 may be a modular roof curb, and as such may be manufactured as a plurality of separate components (e.g. wall portions) adapted for assembly on an installation site.
  • the roof curb 14 may have a height from a bottom edge 14a to a top edge 14b of between approximately 5 and 24 inches (12.7 and 61.0 cm), in other embodiments between approximately 8 and 20 inches (20.3 and 50.8 cm), and in other embodiments between approximately 12 and 18 inches (30.5 and 45.7 cm). In these or other embodiments, the roof curb 14 may have a length of between approximately 4 and 8 ft (122 and 244 cm). In the same or other embodiments, the roof curb 14 may have a width of between approximately 2 and 5 ft (61 and 152 cm).
  • the roof curb 14 may be an insulated roof curb to reduce heat transfer through the roof curb.
  • the roof curb 14 may be of single wall construction and include an insulation layer 18 on an exterior surface to increase the thermal resistance of the roof curb, as shown in Figs. 4-5.
  • the roof curb 14 may be of single wall construction without an insulation layer 18.
  • the roof curb 14 may be of double wall construction including an insulation layer between the two walls to increase the thermal resistance of the roof curb. Assemblies of this nature are known in the art as shown in U.S. Patent No. 4,418,166, which is incorporated herein by reference. As will become more apparent from the description to follow, the presence of insulation on or in the roof curb 14 may be dictated by the positioning of the thermal resistance glass unit relative to the roof curb.
  • the roof curb 14 may include nailers 19 (strips of wood) adjacent to the top and/or bottom edges of the roof curb to facilitate the attachment of various other components of the insulated daylighting assembly 10, such as, for example, the daylighting dome 12.
  • the nailers 19 may also be used to secure waterproofing components around the insulated daylighting assembly 10, as will be described in more detail below.
  • the roof curb 14 may also include a bottom flange 20 extending outwardly from a bottom edge thereof to facilitate attachment to the roof substrate.
  • the roof curb 14 may include a top flange 21 extending outwardly from a top edge to facilitate attachment of the daylighting dome 12 and/or nailers 19.
  • a plurality of fasteners may be used to secure the bottom flange 20 and the roof curb 14 to the roof substrate 15.
  • a gasket or sealant (not shown) may be provided between the bottom flange 20 and the roof substrate to seal the interior of roof curb 14 from the ambient air.
  • a fall-protection screen 23 may be provided above, below, or inside the roof curb 14 to span opening 16.
  • Fall-protection screen 23 can be made of metal, and may be welded to form a grid-like fall-protection and safety barrier.
  • the fall protection screen may comply with OSHA requirements as outlined in OSHA 1926.502 and OSHA 1910 regulations, and may be certified for fall protection.
  • the fall-protection screen 23 may be secured within the roof curb 14 as part of the manufacturing process, and may thereby be provided to the installation site pre-assembled within the roof curb 14.
  • the fall-protection screen 23 may be secured to or within the roof curb 14 during assembly or installation of the roof curb at an installation site. In certain embodiments, fall-protection screen 23 may be positioned adjacent the top edge 14b of roof curb 14, as is conventional in the art. In other embodiments, fall-protection screen 23 may be secured to roof curb 14 adjacent to the bottom edge 14a to render installation of the daylighting system 10 easier, as will be appreciated from the description to follow.
  • Daylighting dome 12 may be of any conventional construction known to those skilled in the art.
  • daylighting dome refers to skylights having a generally domed or otherwise non-planar configuration that is adapted to increase visible light transmittance and light diffusion through the fenestration.
  • the shape or form of the daylighting dome may be irregular, including a plurality of "waves" or contours designed to increase the visible light transmittance at lower sun angles throughout the course of a day.
  • the daylighting dome 12 may be adapted for passive daylighting, which means the components of the daylighting dome 12 are stationary.
  • the daylighting dome 12 may be adapted for active daylighting, and include one or more mechanical devices used to track the sun and maximize the visible light transmittance and diffusion into the building throughout the course of the day.
  • a suitable passive daylighting dome for use in the insulated daylighting assembly 10 of the invention is the SunWaveTM Dome skylight, available from Firestone Building Products (Carmel, Indiana).
  • a suitable active daylighting dome for use in the insulated daylighting assembly 10 of the invention is the SunWaveTM SMRTTM Dome skylight, also available from Firestone Building Products (Carmel, Indiana).
  • U.S. Patent No. 7,395,636 discloses the structure of a domed skylight in more detail, and is incorporated herein by reference for that purpose.
  • daylighting dome 12 may be doubled glazed, including a first domed panel 24 arranged interiorly of a second domed panel 26, and a space 25 between the first panel 24 and second panel 26.
  • First and second domed panels 24 and 26 may be encased in a frame 28 around the outer peripheral edges.
  • frame 28 may be made of extruded aluminum or other suitable metals.
  • Panels 24 and 26 may be made of synthetic materials such as plastic or other resin.
  • one or more of the panels 24, 26 are made of acrylic or polycarbonate materials.
  • both panels 24 and 26 may be substantially clear.
  • the exterior second panel 26 may be substantially clear and the interior first panel 24 may be more translucent.
  • interior first panel 24 is tinted white to provide a soft yet bright light to the interior of a structure, while reducing the solar heat gain through the daylighting dome 12.
  • first panel 24 and/or second panel 26 may include additional coatings and/or additives to provide improved UV resistance, light diffusion, and visible light transmittance with less solar heat gain.
  • Frame 28 may include a mounting flange 32 to facilitate attachment of the daylighting dome 12 to roof curb 14.
  • a plurality of fasteners may pass through the mounting flange 32 and into the roof curb 14 to secure the two components together.
  • a gasket or sealant (not shown) may be provided between frame 28 and/or mounting flange 32 and the roof curb 14 to seal the interior of the roof curb 14 from the exterior.
  • one or more vents (not shown) may also be provided in frame 28 to prevent condensation from forming on the interior of the daylighting dome. In a particular embodiment, the vents may be louvered.
  • a thermally resistant glass unit 34 may be provided to increase the thermal resistance of the insulated daylighting assembly 10 and reduce heat transfer from daylighting dome 12 and roof curb 14 into and from the interior of a structure.
  • the glass unit 34 may have a relatively high R-value to provide improved thermal resistance.
  • R-value refers to the ratio of the temperature difference ( ⁇ ) across an insulator and the heat flux, which is the heat transfer per unit area (Q A ) through the insulator.
  • Q A heat transfer per unit area
  • the glass unit 34 may also have a relatively low U-value, which relates to the thermal absorption of the unit.
  • the U-value which may also be referred to as the U-factor or the overall heat transfer coefficient, is the inverse of the R-value and is represented by the following formula:
  • the glass unit may have good visible light transmittance properties so as to not negatively affect the lighting abilities of the insulated daylighting assembly 10.
  • Visible light transmittance refers to the ratio of visible light transmitted through a substance to the total visible light incident on its surface.
  • the glass unit 34 may be positioned adjacent to the top edge 14b of the roof curb 14, which facilitates installation of the glass unit.
  • the glass unit 34 may be positioned over and secured to the top flange 21 of the roof curb 14 and/or the nailer 19.
  • a gasket or sealant 35 may be provided between the roof curb 14 and the glass unit 34 to reduce thermal transfer from the interior of the building and through the daylighting dome 12 and roof curb 14.
  • the roof curb 14 may be insulated (e.g. includes an insulation layer 18) to further reduce thermal transfer through the insulated daylighting assembly.
  • the thermal resistance (R value) of the insulated daylighting assembly 10 is only as high as the thermal resistance of the glass unit 34 or the roof curb 10, whichever is lower. Accordingly, in certain embodiments, the insulated daylighting assembly 10 may be designed so that the thermal resistance of the roof curb and glass unit are substantially the same.
  • the thermally resistant glass unit 34 may be sized and shaped to fit within the roof curb 14.
  • a plurality of brackets may be provided within the roof curb 14 to support and retain the glass unit 34.
  • a gasket or sealant may be provided between the brackets and glass unit 34 to prevent thermal transfer between the interior of the building and the daylighting dome 12 and roof curb 14.
  • the glass unit 34 may be positioned adjacent to the bottom edge 14a of the roof curb 14 (as opposed to the upper edge 14b or in the middle) so that heat transfer through the roof curb 14 may be reduced regardless of the thermal resistance of the roof curb itself.
  • the glass unit 34 may be positioned over or above fall-protection screen 23, which allows the glass unit to be easily secured within roof curb 14 after the roof curb and fall-protection screen have been secured in or around opening 16.
  • glass unit 34 may have an R-value of at least 8 ft 2 -°F-h/BTU (1.409 m 2 K/W), in other embodiments an R-value of at least 12 ft 2 -°F-h/BTU (2.11 m 2 K/W), in other embodiments an R-value of at least 16 ft 2 -°F-h/BTU (2.82 m 2 K/W), in still other embodiments an R-value of at least 20 ft 2 -°F-h/BTU (3.52 m 2 K/W), in other embodiments an R-value of at least 25 ft 2 -°F-h/BTU (4.40 m 2 K/W), and in yet other embodiments an R-value of at least 30 ft 2 -°F-h/BTU (5.28 m 2 K/W).
  • the glass unit 34 may have an R-value of 40 ft 2 -°F-h/BTU (7.04 m 2 K/W) or more.
  • the R-value may be measured according to ASTM C1363-11 (Standard Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus ' ) .
  • glass unit 34 may have a visible light transmittance of at least 30%, in other embodiments a visible light transmittance of at least 35%, in other embodiments a visible light transmittance of at least 40%, in other embodiments a visible light transmittance of at least 45%, in other embodiments a visible light transmittance of at least 48%, in still other embodiments a visible light transmittance of at least 50%, and in yet other embodiments a visible light transmittance of at least 55%.
  • the visible light transmittance may be measured according to ASTM D1003-llel (Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics ' ) and/or ASTM E1348-11 (Standard Test Method or Transmittance and Color by Spectrophotometry Using Hemispherical Geometry),
  • glass unit 34 may have a U-value of less than 0.10 BTU/h °F ft 2 (0.568 W/m 2 K), in other embodiments a U-value of less than 0.09 BTU/h °F ft 2 (0.511 W/m 2 K), in other embodiments a U-value of less than 0.08 BTU/h °F ft 2 (0.454 W/m 2 K), in other embodiments a U-value of less than 0.07 BTU/h °F ft 2 (0.397 W/m 2 K), and in yet other embodiments a U-value of less than 0.06 BTU/h °F ft 2 (0.341 W/m 2 K) .
  • the U-value refers to the overall heat transfer coefficient, and is a measure of the heat transfer through a building element over a given area.
  • the U-value may be measured according to ASTM C1363-11 (Standard Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus) .
  • the thermally resistant glass unit 34a may include a first glass pane 36, a second glass pane 38, and a plurality of heat reflecting films or coatings 40 spaced between the panes and oriented generally parallel to the panes. It is also contemplated that more than two glass panes may be provided, with heat reflecting films positioned between each of the glass panes. In a particular embodiment, three reflecting films may be provided, although more or less reflecting films may be included.
  • a plurality of internal spaces or voids 42 are formed between the glass panes 36, 38 and the reflecting films 40.
  • the internal spaces 42 extend between adjacent panes 36, 38 and/or reflecting films 40 and have a hermetic seal at the periphery of the thermally resistant glass unit 34a, which may be formed by a sealant and optionally an adhesive tape positioned on the exterior of the sealant around the outer edges of the thermally resistant glass unit 34a.
  • the sealant used may be a curable sealant, which may also act to secure adjacent panes and reflecting films together.
  • the adhesive tape provided around the periphery of the thermally resistant glass unit 34a may be a metal backed adhesive, and may also act to secure the components of the glass unit together.
  • U.S. Patent No. 5,156,894 describes the structure and assembly of a suitable thermally resistant glass unit having heat reflecting films or coatings in more detail, and is incorporated herein by reference for that purpose.
  • a gas may be provided in the internal spaces 42 of the glass unit to improve the thermal resistance of the glass unit.
  • the gas may be a mixture of Xenon and Krypton.
  • the gas may include 50% Xenon and 50% Krypton.
  • a suitable thermally resistant glass unit 34 for use in the insulated daylighting assembly of the invention including heat reflecting films is Eco Insulating Glass, made by Eco Insulating Glass Inc. (Mississauga, Ontario Canada).
  • the glass unit 34 may be a vacuum insulated glass unit, indicated by the reference numeral 34b in Fig. 7.
  • the vacuum insulated glass may include at least two panes of glass 50, 52 separated by thin separating members 54 arranged between the panes at the peripheral edges. In certain embodiments, more than two glass panes may be provided. In one or more embodiments, an array of support pillars or spacers 55 may also be provided between the panes of glass 50, 52.
  • a small inner cavity 56 is created between the panes 50, 52, which may be sealed at the periphery of the panes by the separating members 54.
  • the separating members may be fused solder glass, which act to provide a hermetic seal around the inner cavity 56.
  • a sealant or gasket (not shown) may be provided between the panes around the periphery of the inner cavity 56 to seal the cavity against fluid transfer.
  • a hermetically sealed pump tube 60 is provided that communicates with the inner cavity 56 and is used to create a vacuum between the panes of glass 50, 52.
  • the low pressure inner cavity 56 substantially eliminates conduction and convection heat transfer through the glass unit 34b.
  • the vacuum insulated glass 34b unit also provides good light transmittance through the panel and has a decreased thickness as compared to other glass units having high R- values.
  • An example of a vacuum insulated glass unit suitable for use in the insulated daylighting assembly 10 is manufactured by Qingdao Hengda Glass Technology Co. Ltd. (China).
  • the insulated daylighting assembly 10 may have a relatively low solar heat gain coefficient, which relates to the heat generated within the building or structure by the assembly.
  • the solar heat gain coefficient is the ratio of the solar heat gain entering the space through the daylighting assembly to the incident solar radiation.
  • the insulated daylighting assembly 10 may have a solar heat gain coefficient of less than 0.50, in other embodiments less than 0.45, in other embodiments less than 0.40, in other embodiments less than 0.35, and in yet other embodiments less than 0.30.
  • the solar heat gain coefficient may be measured according to NFRC 201 :2001 (National Fenestration Rating Council - Interim Standard Test Method for Measuring the Solar Heat Gain Coefficient of Fenestration Systems Using Calorimetry Hot Box Methods ' ).
  • the insulated daylighting assembly 10 may have a relatively low air leakage through the system.
  • Air leakage refers to the volume of air flowing per unit time per unit area through the daylighting assembly, between the interior and the exterior environments, due to air pressure or temperature differences.
  • the insulated daylighting assembly 10 may have an air leakage of less than 0.07 cfm/ft 2 (0.356 L-sec/m 2 ), in other embodiments less than 0.06 cfm/ft 2 (0.305 L-sec/m 2 ), in other embodiments less than 0.05 cfm/ft 2 (0.254 L-sec/m 2 ), in still other embodiments less than 0.04 cfm/ft 2 (0.203 L-sec/m 2 ), and in yet other embodiments less than 0.03 cfm/ft 2 (0.152 L-sec/m 2 ) .
  • the air leakage may be measured according to ASTM E283-04 (Standard Test Method for Determining Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen).
  • the roof curb 14 may first be assembled, if provided in modular form.
  • the fall-protection screen 23 may be secured to the roof curb prior to attachment of the roof curb to the roof substrate around the opening 16.
  • the fall-protection screen 14 may be secured to the roof curb 14 by attachment tabs 25 provided on one or more of the flanges 20, 21 of the roof curb.
  • the roof curb may then be secured to the roof substrate around the opening 16, and in certain embodiments may be secured by driving fasteners through a portion of the roof curb and into the roof substrate.
  • the insulated glass unit 34 may be positioned within or over the roof curb.
  • the glass unit 34 may be positioned on the top flange 21 of the roof curb.
  • a sealant may optionally be applied between the top flange 21 of the roof curb 14 and glass unit 34 to create a hermetic seal therebetween.
  • the daylighting dome 12 may then be positioned over the glass unit 34, and secured to the roof curb 14.
  • waterproofing components may be installed over and around the roof curb of the daylighting system to prevent water infiltration.
  • flashings 36 may be used to seal the daylighting system to a roofing membrane 38 covering the remainder of the roof substrate. Flashings are well known to those skilled in the art, and any known flashing suitable for the intended purpose and for use with the roofing system may be used.
  • the roof flashing may be secured at one end to the nailer of the roof curb.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Abstract

L'invention porte sur un ensemble éclairage naturel isolé qui comprend un rebord de toit, positionné adjacent à une ouverture dans une surface de toit, et un dôme d'éclairage naturel en dôme fixé au sommet du rebord de toit. Une unité en verre thermiquement résistant est positionnée sur un côté intérieur du dôme d'éclairage naturel et aide à réduire le transfert de chaleur à travers l'ensemble éclairage naturel isolé. Un écran de protection contre la chute peut être fixé au rebord de toit et, dans certains modes de réalisation, peut être fixé à un fond du rebord de toit. L'unité de verre thermiquement résistant réduit le transfert thermique à travers l'ensemble éclairage naturel isolé sans réduire de façon significative le facteur de transmission de lumière de l'ensemble.
PCT/US2012/025569 2011-02-17 2012-02-17 Ensemble éclairage naturel isolé WO2012161765A1 (fr)

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US61/443,775 2011-02-17

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
WO2016000925A1 (fr) * 2014-06-30 2016-01-07 Eternit Flachdach Gmbh Costière pour fenêtre de toit plat et fenêtre de toit plat
US20170284103A1 (en) * 2016-03-31 2017-10-05 Vkr Holding, A/S Skylight cover with advantageous topography
US10208909B2 (en) 2016-06-08 2019-02-19 Entech Solar, Inc Passive skylight with two parabolic reflector segments
US10329769B2 (en) 2017-02-21 2019-06-25 Entech Solar, Inc Tall skylight dome with sun shade and diffusing partial cap to strengthen dome to capture low sun elevation angle light
CN114892896A (zh) * 2022-05-24 2022-08-12 北京凌云宏达幕墙工程有限公司 一种用于开放式屋面的幕墙采光天窗系统
US20230085785A1 (en) * 2021-09-22 2023-03-23 Vkr Holding A/S Tubular skylight assembly

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WO2016000925A1 (fr) * 2014-06-30 2016-01-07 Eternit Flachdach Gmbh Costière pour fenêtre de toit plat et fenêtre de toit plat
US20170284103A1 (en) * 2016-03-31 2017-10-05 Vkr Holding, A/S Skylight cover with advantageous topography
US10889990B2 (en) * 2016-03-31 2021-01-12 Vkr Holding A/S Skylight cover with advantageous topography
US10208909B2 (en) 2016-06-08 2019-02-19 Entech Solar, Inc Passive skylight with two parabolic reflector segments
US10329769B2 (en) 2017-02-21 2019-06-25 Entech Solar, Inc Tall skylight dome with sun shade and diffusing partial cap to strengthen dome to capture low sun elevation angle light
US20230085785A1 (en) * 2021-09-22 2023-03-23 Vkr Holding A/S Tubular skylight assembly
CN114892896A (zh) * 2022-05-24 2022-08-12 北京凌云宏达幕墙工程有限公司 一种用于开放式屋面的幕墙采光天窗系统
CN114892896B (zh) * 2022-05-24 2023-09-22 北京凌云宏达幕墙工程有限公司 一种用于开放式屋面的幕墙采光天窗系统

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