EP1974116A1 - Frame profile for windows, doors and façades with improved thermal insulation by means of surfaces having optimized emmissivity - Google Patents

Frame profile for windows, doors and façades with improved thermal insulation by means of surfaces having optimized emmissivity

Info

Publication number
EP1974116A1
EP1974116A1 EP07702865A EP07702865A EP1974116A1 EP 1974116 A1 EP1974116 A1 EP 1974116A1 EP 07702865 A EP07702865 A EP 07702865A EP 07702865 A EP07702865 A EP 07702865A EP 1974116 A1 EP1974116 A1 EP 1974116A1
Authority
EP
European Patent Office
Prior art keywords
room
profiles
heat transfer
transfer coefficient
values
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07702865A
Other languages
German (de)
French (fr)
Inventor
Franz Feldmeier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1974116A1 publication Critical patent/EP1974116A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/30—Coverings, e.g. protecting against weather, for decorative purposes
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/263—Frames with special provision for insulation
    • E06B3/2632—Frames with special provision for insulation with arrangements reducing the heat transmission, other than an interruption in a metal section
    • E06B2003/26323—Frames with special provision for insulation with arrangements reducing the heat transmission, other than an interruption in a metal section with coatings reducing the radiation

Definitions

  • the invention relates to thermally insulated frame profiles made of wood, plastic, metal (steel, stainless steel, aluminum, copper, brass and the like.) For windows, doors and facades.
  • Such frame profiles are in the o.g. Materials generally known for windows, doors and facades.
  • the thermal insulation is based on an increase in the
  • thermal insulation is based essentially on the relatively low thermal conductivity of wood, improvements were i.a. through profiles with larger depths. Only in recent years so-called composite structures have been added. It is i.a. between the outside and inside wooden profiles, a mechanically sufficient viable layer of organic foam attached.
  • the thermal insulation is based initially on the relatively low thermal conductivity of the material, usually associated with a reduction of the heat transfer surfaces by hollow sections with air chambers.
  • the improvements of the last 5 years have been achieved by increasing the number of air chambers and increasing the profile depth of the profiles. In rare cases, films with reduced emissivity were introduced into the hollow chambers.
  • the thermal insulation is almost always based on a plastic insulating zone between two metal profiles (inside and outside), eg in the form of foam strips, insulating strips made of casting resins or of thermoplastics. Improvements are mainly due to an increase in the height of the insulation zone, a reduction in the wall thickness of the Dämmstege and a combination Dämmsteg - foam.
  • the emissivity of these surfaces is in the range of 0.8 to 0.9.
  • the invention has for its object to improve the thermal insulation of the frame profiles by reduced emissivity of the room-side surfaces without having to fear condensation on the inner surface.
  • the emissivity in the long-wave IR region of the room-side surface as a function of the climatic conditions (in particular the minimum possible outside air temperature), the room air conditions (generally 20 0 C, about 50% relative humidity), the basic U value
  • the advantage achieved by the invention consists essentially in the fact that with simple means (coating, or anodizing or foliation) and simple base values for the emissivity of the room-side surfaces appreciable improvements in the U-value of the profiles can be achieved (about 10 % and more) .

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wing Frames And Configurations (AREA)
  • Laminated Bodies (AREA)

Abstract

A thermally insulated wooden, plastic or metal profile for windows, doors and façades having a room-side surface which is coated or film- or foil-covered or else anodized in the case of aluminium, this surface having an initial heat transfer coefficient of ≤ 3.0 W/m2K at standard heat transmission resistances, is characterized in that the room-side profile surfaces have emission numbers of 0.55 to 0.10, wherein, depending on the profile geometry and the initial heat transfer coefficient, and corresponding to the climatic conditions, values are selected for the emission numbers such that the room-side surface temperatures of the profiles lie above the dew point limit and the heat transfer coefficients of the profiles are reduced by at least 5%.

Description

Rahmenprofil für Fenster, Türen und Fassaden mit verbesserter Wärmedämmung durch Oberflächen mit optimierter Emissivität Frame profile for windows, doors and facades with improved thermal insulation through surfaces with optimized emissivity
Beschreibungdescription
Die Erfindung betrifft wärmegedämmte Rahmenprofile aus Holz, Kunststoff, Metall (Stahl, Edelstahl, Aluminium, Kupfer, Messing u. dgl . ) für Fenster, Türen und Fassaden.The invention relates to thermally insulated frame profiles made of wood, plastic, metal (steel, stainless steel, aluminum, copper, brass and the like.) For windows, doors and facades.
Derartige Rahmenprofile sind in den o.g. Werkstoffen allgemein für Fenster, Türen und Fassaden bekannt. Die Wärmedämmung beruht auf einer Erhöhung desSuch frame profiles are in the o.g. Materials generally known for windows, doors and facades. The thermal insulation is based on an increase in the
Wärmedurchlasswiderstands des Profils gegenüber ungedämmten Profilen, wie z.B. Aluminiumprofilen ohne thermische Trennung .Thermal resistance of the profile to uninsulated profiles, such as e.g. Aluminum profiles without thermal break.
Bei Holzprofilen beruht die Wärmedämmung im Wesentlichen auf den vergleichsweise geringen Wärmeleitfähigkeiten von Holz, Verbesserungen erfolgten i.a. durch Profile mit größeren Bautiefen. Erst in den letzten Jahren sind sog. Verbundkonstruktionen hinzugekommen. Dabei wird i.a. zwischen den außen und innen liegenden Holzprofilen eine mechanisch ausreichend tragfähige Schicht aus einem organischen Schaum angebracht.For wood profiles, the thermal insulation is based essentially on the relatively low thermal conductivity of wood, improvements were i.a. through profiles with larger depths. Only in recent years so-called composite structures have been added. It is i.a. between the outside and inside wooden profiles, a mechanically sufficient viable layer of organic foam attached.
Bei Profilen aus Kunststoff (wie z.B. PVC) beruht die Wärmedämmung zunächst auch auf der vergleichsweise geringen Wärmeleitfähigkeit des Werkstoffs, in aller Regel verbunden mit einer Reduzierung der wärmeübertragenden Flächen durch Hohlprofile mit Luftkammern. Die Verbesserungen der letzten 5 Jahre wurden i.a. durch eine Erhöhung der Zahl der Luftkammern und einer Vergrößerung der Bautiefe der Profile erreicht. In seltenen Fällen wurden auch Folien mit reduzierter Emissivität in die Hohlkammern eingebracht. Bei Metallprofilen beruht die Wärmedämmung nahezu immer auf einer zwischen zwei Metallprofilen (innen und außen) angebrachten Dämmzone aus Kunststoff, u.a. in Form von Schaumstreifen, Dämmstegen aus Gießharzen bzw. aus Thermoplasten. Verbesserungen beruhen vor allem auf einer Erhöhung der Höhe der Dämmzone, einer Reduzierung der Wanddicke der Dämmstege und einer Kombination Dämmsteg - Schaum.For profiles made of plastic (such as PVC), the thermal insulation is based initially on the relatively low thermal conductivity of the material, usually associated with a reduction of the heat transfer surfaces by hollow sections with air chambers. The improvements of the last 5 years have been achieved by increasing the number of air chambers and increasing the profile depth of the profiles. In rare cases, films with reduced emissivity were introduced into the hollow chambers. In the case of metal profiles, the thermal insulation is almost always based on a plastic insulating zone between two metal profiles (inside and outside), eg in the form of foam strips, insulating strips made of casting resins or of thermoplastics. Improvements are mainly due to an increase in the height of the insulation zone, a reduction in the wall thickness of the Dämmstege and a combination Dämmsteg - foam.
Die zur Raumseite hin gerichteten Oberflächen sind bei Holz i.a. roh, lackiert bzw. lasiert, bei Kunststoff roh bzw. lackiert, bei Metallen i.a. anodisiert (= eloxiert) oder lackiert. Die Emissivität dieser Oberflächen liegt im Bereich von 0,8 bis 0,9.The surfaces facing the room side are i.a. uncoated, varnished or glazed, raw or varnished for plastic, i.a. anodized (= anodized) or painted. The emissivity of these surfaces is in the range of 0.8 to 0.9.
Der Erfindung liegt die Aufgabe zugrunde, die Wärmedämmung der Rahmenprofile durch reduzierte Emissivität der raumseitigen Oberflächen zu verbessern, ohne Tauwasser an der Innenoberfläche befürchten zu müssen.The invention has for its object to improve the thermal insulation of the frame profiles by reduced emissivity of the room-side surfaces without having to fear condensation on the inner surface.
Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß die Emissivität im langwelligen IR-Bereich der raumseitigen Oberfläche in Abhängigkeit von den klimatischen Bedingungen (insbesondere der minimal möglichen Außenlufttemperatur) , den Raumluftbedingungen (i.a. 200C, ca. 50 % relative Luftfeuchte) , dem Basis-U-WertThis object is achieved according to the invention in that the emissivity in the long-wave IR region of the room-side surface as a function of the climatic conditions (in particular the minimum possible outside air temperature), the room air conditions (generally 20 0 C, about 50% relative humidity), the basic U value
(Ausgangswärmedurchgangskoeffizienten) des Profils mit Normübergangswiderständen innen und außen und der Geometrie des Profils (ausgedrückt durch die abgewickelte Fläche innen im Verhältnis zur Ansichtsfläche) so gewählt wird, daß der Wärmedurchgangskoeffizient U der Profile um mindestens 5% reduziert wird und an den Innenoberflächen kein oder zumindest nur sehr kurzzeitig Tauwasser auftreten kann.(Initial heat transfer coefficient) of the profile with standard internal and external resistance and the geometry of the profile (expressed by the unwound surface inside in relation to the viewing surface) is selected so that the heat transfer coefficient U of the profiles is reduced by at least 5% and on the inner surfaces no or at least only very briefly dew water can occur.
Die Aufgabe gemäß Erfindung zur Optimierung der Emissionszahlen bezüglich Wärmedämmung und Tauwasservermeidung resultiert aus der Tatsache, daß mit sinkenden Emissionszahlen bei ansonsten festen Daten die innere Oberflächentemperatur absinkt, und zwar zunehmend mit sinkenden Emissionswerten, d.h. bei einer Verbesserung der Wärmedämmung durch IR-reflektierende Oberflächen kann es bei fehlender Abstimmung (= Aufgabe der Erfindung) Wärmedämmung - innere Oberflächentemperatur zu einem erhöhten Tauwasserbildung kommen.The object of the invention to optimize the emission numbers with respect to thermal insulation and condensation avoidance results from the fact that with sinking emission figures with otherwise firm data the inner surface temperature decreases, increasingly with decreasing emission values, ie with an improvement of the heat insulation by IR-reflecting surfaces it can come in case of lack of coordination (= object of the invention) thermal insulation - inner surface temperature to an increased condensation water formation.
Der durch die Erfindung erreichte Vorteil besteht im Wesentlichen darin, daß mit einfachen Mitteln (Beschichten, bzw. Anodisieren, bzw. Folieren) und einfachen Basiswerten für die Emissivität der raumseitigen Oberflächen nennenswerte Verbesserungen beim U-Wert der Profile erreicht werden können (ca. 10% und mehr) .The advantage achieved by the invention consists essentially in the fact that with simple means (coating, or anodizing or foliation) and simple base values for the emissivity of the room-side surfaces appreciable improvements in the U-value of the profiles can be achieved (about 10 % and more) .
Bei Beschichtungssystemen (Nass- und Pulverlack) ist es heute möglich, die Emissionszahlen von üblicherweise etwa 0,8 variabel auf 0,55 bis 0,20 abzusenken. Bei anodisierten Profilen sind je nach Beizbehandlung und Schichtdicke Reduzierungen auf 0,4 bis 0,10 möglich. Die niedrigen Werte setzen i.a. weniger stark gebeizte, bzw. geglänzte Oberflächen und Schichtdicken von unter 20 μm, z.T. sogar unter 15 μm voraus. Für Innenanwendungen, wie hier vorgesehen, sind die genannten Oxidschichtdicken ausreichend und zulässig.In the case of coating systems (wet and powder coating), it is now possible to reduce the emission numbers from usually about 0.8 to 0.55 to 0.20. Depending on the pickling treatment and layer thickness, reductions to 0.4 to 0.10 are possible for anodised profiles. The low values i.a. less strongly stained or glazed surfaces and layer thicknesses of less than 20 μm, z. even below 15 μm ahead. For interior applications, as provided herein, the said oxide layer thicknesses are sufficient and permissible.
Bei Folien sind ebenfalls Werte bis zu einer minimalen Emissivität von 0,10 möglich.For films, values up to a minimum emissivity of 0.10 are also possible.
Die üblichen Profilgeometrien führen zu Verhältniswerten für projizierter Fläche Ai zu abgewickelte Innenfläche Ap (= Geometrieverhältniswert Ci) von nahezu um 1,0 bis ca. 0,20.The usual profile geometries lead to ratio values for projected area Ai to unwound inner surface Ap (= geometric ratio value Ci) of almost 1.0 to about 0.20.
Einen Gesamtüberblick der zulässigen Werte in Abhängigkeit von Außentemperatur, Geometrieverhältniswert und Basis-U-Wert gibt die nachstehende Tabelle. Zwischenwerte können interpoliert werden.An overview of the permissible values as a function of the outside temperature, the geometric ratio value and the basic U value is given in the following table. Intermediate values can be interpolated.
Tabelle Zulässige Emissivität der inneren ProfiloberflächeTable Permissible emissivity of the inner profile surface
— = nicht möglich - = not possible

Claims

Patentansprüche claims
1. Wärmegedämmte Profile aus Holz, Kunststoff oder Metall für Fenster, Türen und Fassaden mit einer raumseitigen, beschichteten oder folterten bzw. bei Aluminium auch anodisierten Oberfläche mit einem Ausgangswärmedurchgangskoeffizienten von ≤ 3,0 W/m^K bei normgemäßen Wärmeübergangswiderständen dadurch gekennzeichnet, dass die raumseitigen Profiloberflächen Emissionszahlen von 0,55 bis 0,10 aufweisen, wobei für die Emissionszahlen in Abhängigkeit von der Profilgeometrie und dem Ausgangswärmedurchgangskoeffizienten entsprechend den klimatischen Bedingungen Werte so gewählt sind, daß die raumseitigen Oberflächentemperaturen der Profile oberhalb der Tauwassergrenze liegen und die Wärmedurchgangskoeffizienten der Profile um mindestens 5% reduziert werden. 1. Thermally insulated profiles made of wood, plastic or metal for windows, doors and facades with a room-side, coated or tortured or aluminum anodized surface with an initial heat transfer coefficient of ≤ 3.0 W / m ^ K at standard heat transfer resistors, characterized in that the room-side profile surfaces emissivity numbers of 0.55 to 0.10, wherein for the emission numbers depending on the profile geometry and the exit heat transfer coefficient according to the climatic conditions values are selected so that the room-side surface temperatures of the profiles are above the condensation water limit and the heat transfer coefficient of the profiles be reduced by at least 5%.
Profile nach Anspruch 1, dadurch gekennzeichnet, dass die Emissivität der raumseitigen Profiloberflächen die Werte gemäß nachstehender Tabelle in Abhängigkeit von Basis-U-Wert (= Ausgangswärmedurchgangskoeffizient) , Geometrieverhältniswert Ci (=Verhältnis projizierte Fläche Ai zu abgewickelter Innenfläche Ap) und Außenlufttemperatur (T_außen) aufweist, wobei Zwischenwerte zu interpolieren sind.Profiles according to claim 1, characterized in that the emissivity of the room-side profile surfaces, the values according to the following table as a function of base U value (= initial heat transfer coefficient), geometry ratio Ci (= ratio projected area Ai to unwound inner surface Ap) and outside air temperature (T_außen) having intermediate values to be interpolated.
= nicht möglich Profile nach Anspruch 1 und Anspruch 2, dadurch gekennzeichnet, dass bei Innenraumbedingungen, die von der Standardbedingung 2O0C / 50% rel . Luftfeuchte abweichen, die Untergrenze der Emissivität der raumseitigen Profiloberflächen im Vergleich zu den Werten in der Tabelle nach Anspruch 2 angepasst werden kann. = not possible Profiles according to claim 1 and claim 2, characterized in that in indoor conditions, the standard condition of 2O 0 C / 50% rel. Deteriorate the lower limit of the emissivity of the room-side profile surfaces in comparison to the values in the table according to claim 2.
EP07702865A 2006-01-18 2007-01-18 Frame profile for windows, doors and façades with improved thermal insulation by means of surfaces having optimized emmissivity Withdrawn EP1974116A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006002580 2006-01-18
DE102006040271A DE102006040271A1 (en) 2006-01-18 2006-08-28 Frame profile for windows, doors and facades with improved thermal insulation through surfaces with optimized emissivity
PCT/EP2007/000428 WO2007082751A1 (en) 2006-01-18 2007-01-18 Frame profile for windows, doors and façades with improved thermal insulation by means of surfaces having optimized emmissivity

Publications (1)

Publication Number Publication Date
EP1974116A1 true EP1974116A1 (en) 2008-10-01

Family

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EP07702865A Withdrawn EP1974116A1 (en) 2006-01-18 2007-01-18 Frame profile for windows, doors and façades with improved thermal insulation by means of surfaces having optimized emmissivity

Country Status (3)

Country Link
EP (1) EP1974116A1 (en)
DE (1) DE102006040271A1 (en)
WO (1) WO2007082751A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9447627B2 (en) 2014-05-27 2016-09-20 Guardian Industries Corp. Window frame system for vacuum insulated glass unit
US9845635B2 (en) 2014-05-27 2017-12-19 Guardian Glass, Llc. Window frame system for vacuum insulated glass unit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1766175A1 (en) * 2004-06-23 2007-03-28 Norsk Hydro ASA Structural metal element with improved thermal properties and a method for making same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007082751A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9447627B2 (en) 2014-05-27 2016-09-20 Guardian Industries Corp. Window frame system for vacuum insulated glass unit
US9845635B2 (en) 2014-05-27 2017-12-19 Guardian Glass, Llc. Window frame system for vacuum insulated glass unit

Also Published As

Publication number Publication date
WO2007082751A1 (en) 2007-07-26
DE102006040271A1 (en) 2007-07-26

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