EN 12412-2:2003

Thermal performance of windows, doors and shutters - Determination of thermal transmittance by hot box method - Part 2: Frames

This European Standard specifies a method, based on EN ISO 8990 and EN ISO 12567-1, to measure the thermal transmittance of frame and sash components of windows and doors, including mullions and transoms.
The thermal bridging effect of window or door components (handles, hinges, closing devices, etc.) is included.
The test procedure is designed to take into account the whole developed area of the frame or sash surface, but excludes the influence of the thermal bridge introduced through the spacer in sealed glazing units.
Edge effects occurring outside of the perimeter of the specimen are excluded. Furthermore, energy transfer due to solar radiation is not taken into account, and air leakage is excluded.
The measurements are performed under defined conditions to facilitate the comparison of measured values.
Information on the design of the calibration transfer standard is given in EN ISO 12567-1.

Wärmetechnisches Verhalten von Fenstern, Türen und Abschlüssen - Bestimmung des Wärmedurchgangskoeffizienten mittels des Heizkastenverfahrens - Teil 2: Rahmen

Diese Norm legt ein Verfahren zur Messung des Wärmedurchgangskoeffizienten von Rahmen  und Flügelrahmen von Fenstern und Türen, einschließlich Kämpfer und Pfosten, auf der Grundlage von EN ISO 8990 und EN ISO 12567-1 fest.
Die Wirkung von Wärmebrücken von Fenster- oder Türbeschlägen (Drückern, Bändern, Schließeinrichtungen usw.) wird berücksichtigt.
Bei der Durchführung der Prüfung wird die gesamte abgewickelte Fläche des Schiebeflügels oder Flügelrahmens berücksichtigt, davon ausgeschlossen ist jedoch der Einfluss der Wärmebrücke, die durch die Abstandshalter bei Verbundglaseinheiten gebildet wird.
Die Messungen werden bei definierten Randbedingungen durchgeführt, um den Vergleich von Messwerten zu erleichtern.
Randeinflüsse, die außerhalb des Umfanges des Probekörpers liegen, werden ausgeschlossen. Ferner sind Energieübertragung infolge Sonnenstrahlung und Luftundichtigkeit nicht Gegenstand dieser Norm.
Informationen über die Konstruktion von Kalibrierpanelen sind in EN ISO 12567-1 zu finden.

Performance thermique des fenêtres, portes et fermetures - Détermination du coefficient de transmission thermique par la méthode de la boîte chaude - Partie 2: Encadrements

La présente norme européenne spécifie une méthode fondée sur le prEN ISO 8990, pour mesurer le coefficient de transmission thermique des composants de dormants et ouvrants de fenêtres et portes, y compris les traverses et les montants. Les mesurages se font dans des conditions qui sont représentatives de la pratique. Les effets de bord se produisent à l'extérieur du périmètre de l'éprouvette sont exclus. De même, le transfert d'énergie dû au rayonnement solaire n'est pas pris en compte, et les fuites d'air sont exclues.

Toplotne lastnosti oken, vrat in polken – Ugotavljanje toplotne prehodnosti z metodo komorne naprave – 2. del: Okvirji

General Information

• Status: Published
• Publication Date: 15-Jul-2003
• ICS: 91.060.50 - Doors and windows
• ICS: 91.120.10 - Thermal insulation of buildings
• Technical Committee: CEN/TC 89 - Thermal performance of buildings and building components
• Drafting Committee: CEN/TC 89/WG 7 - Thermal properties of doors and windows
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 17-Apr-2024
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Ref Project: SIST EN 12412-2:2003 - Thermal performance of windows, doors and shutters - Determination of thermal transmittance by hot box method - Part 2: Frames

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2003
Toplotne lastnosti oken, vrat in polken – Ugotavljanje toplotne prehodnosti z
metodo komorne naprave – 2. del: Okvirji
Thermal performance of windows, doors and shutters - Determination of thermal
transmittance by hot box method - Part 2: Frames
Wärmetechnisches Verhalten von Fenstern, Türen und Abschlüssen - Bestimmung des
Wärmedurchgangskoeffizienten mittels des Heizkastenverfahrens - Teil 2: Rahmen
Performance thermique des fenetres, portes et fermetures - Détermination du coefficient
de transmission thermique par la méthode de la boîte chaude - Partie 2: Encadrements
Ta slovenski standard je istoveten z: EN 12412-2:2003
ICS:
91.060.50 Vrata in okna Doors and windows
91.120.10 Toplotna izolacija stavb Thermal insulation
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 12412-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2003
ICS 91.060.50
English version
Thermal performance of windows, doors and shutters -
Determination of thermal transmittance by hot box method - Part
2: Frames
Performance thermique des fenêtres, portes et fermetures - Wärmetechnisches Verhalten von Fenstern, Türen und
Détermination du coefficient de transmission thermique par Abschlüssen - Bestimmung des
la méthode de la boîte chaude - Partie 2: Encadrements Wärmedurchgangskoeffizienten mittels des
Heizkastenverfahrens - Teil 2: Rahmen
This European Standard was approved by CEN on 2 May 2003.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12412-2:2003 E
worldwide for CEN national Members.

Contents
Foreword . 3
Introduction. 4
1 Scope. 4
2 Normative references. 4
3 Terms, definitions, symbols, units and subscripts . 5
4 Principle . 6
5 Requirements for test specimen and apparatus. 6
5.1 General . 6
5.2 Surround panels. 6
5.3 Specimen requirements and location . 6
5.3.1 Complete frames for windows and doors. 6
5.3.2 Frame and sash, transom or mullion profile sections. 9
5.4 Calibration panels . 11
5.5 Temperature measurement and baffle positions . 11
6 Test procedure. 13
6.1 General . 13
6.2 Calibration measurements . 13
6.2.1 General . 13
6.2.2 Total surface resistance . 14
6.2.3 Surface resistances and surface coefficients of heat transfer. 15
6.2.4 Surround panel and edge effects . 16
6.3 Measurement procedure for test specimens. 17
7 Test report. 19
Annex A (normative) Determination of environmental temperature . 21
A.1 General . 21
A.2 Environmental temperature. 22
A.3 Mean radiant temperature . 22
A.4 Convective surface heat transfer coefficient . 23
Annex B (normative) Linear thermal transmittance of the edge zone . 25
Annex C (informative) Example of calibration test and measurement of frame specimen. 32
·
C.1 Calibration test with panel size 1,23 m 1,48 m . 32
C.2 Frame specimen measurement. 38
Foreword
This document EN 12412-2:2003 has been prepared by Technical Committee CEN /TC 89, "Thermal performance
of buildings and building components" the secretariat of which is held by SIS.
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by January 2004, and conflicting national standards shall be withdrawn at the latest by
January 2004.
This standard is one of a series of standards on calculation and measurement methods for the design and
evaluation of the thermal performance of buildings and building components.
Annexes A and B are normative. Annex C is informative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
Introduction
The method given in this European Standard provides data on frames that can be used in calculations of the overall
thermal performance of windows and doors according to EN ISO 10077-1, Thermal performance of windows, doors
and shutters – Calculation of thermal transmittance – Part 1: Simplified method (ISO 10077-1).
1 Scope
This European Standard specifies a method, based on EN ISO 8990 and EN ISO 12567-1, to measure the thermal
transmittance of frame and sash components of windows and doors, including mullions and transoms.
The thermal bridging effect of window or door components (handles, hinges, closing devices, etc.) is included.
The test procedure is designed to take into account the whole developed area of the frame or sash surface, but
excludes the influence of the thermal bridge introduced through the spacer in sealed glazing units.
Edge effects occurring outside of the perimeter of the specimen are excluded. Furthermore, energy transfer due to
solar radiation is not taken into account, and air leakage is excluded.
The measurements are performed under defined conditions to facilitate the comparison of measured values.
Information on the design of the calibration transfer standard is given in EN ISO 12567-1.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 1946-4, Thermal performance of building products and components – Specific criteria for the assessment of
laboratories measuring heat transfer properties – Part 4: Measurements by hot box methods.
:
prEN 12519:1996 , Windows and doors – Terminology.
EN 12664, Thermal performance of building materials and products – Determination of thermal resistance by means
of guarded hot plate and heat flow meter methods – Dry and moist products of medium and low thermal resistance.
EN ISO 7345:1995, Thermal insulation – Physical quantities and definitions (ISO 7345:1987).
EN ISO 8990:1996, Thermal insulation – Determination of steady-state thermal transmission properties – Calibrated
and guarded hot box (ISO 8990:1994).
EN ISO 9288:1996, Thermal insulation – Heat transfer by radiation – Physical quantities and definitions
(ISO 9288:1989).
EN ISO 12567-1:2000, Thermal performance of windows and doors – Determination of thermal transmittance by hot
box method - Part 1: Complete windows and doors (ISO 12567-1:2000).
3 Terms, definitions, symbols, units and subscripts
3.1 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in prEN 12519:1996,
EN ISO 7345:1995, EN ISO 8990:1996 and EN ISO 9288:1996 apply.
3.2 Symbols and units
Symbol Quantity Unit
A area m
d thickness or depth m
F fraction
-
f view factor
-
H height m
h surface coefficient of heat transfer
W/(m K)
L perimeter length m
l
length m
q density of heat flow rate W/m
R
thermal resistance m K/W
T thermodynamic temperature K
temperature difference K
D T, D q
U
thermal transmittance W/(m K)
v air velocity m/s
w width m
radiation factor
a -
hemispherical emissivity
e -
Celsius temperature °C
q
L thermal conductance W/(m K)
thermal conductivity
l W/(m K)
2 4
Stefan-Boltzmann constant
s W/(m K )
heat flow rate W
F
Y linear thermal transmittance W/(m K)
3.3 Subscripts
b baffle
c convection (air)
ca calibration
e external, usually cold side
ed edge zone
f frame
fi infill with known thermal properties
hb hot box
i internal, usually warm side
in input
m measured
me average/mean
n environmental (ambient)
ne environmental (ambient external)
ni environmental (ambient internal)
p reveal of surround panel
r radiation (mean)
s surface
sp specimen
sur surround panel
t total
4 Principle
The thermal transmittance of a frame is determined directly by measurement under standardised conditions using
the calibrated or guarded hot box method according to EN ISO 8990 and EN ISO 12567-1. The requirements of
EN ISO 8990 shall be complied with in addition to those given in this standard. The method may be applied to
complete window or door frames (see 5.3.1) or to profile sections including mullions, transoms etc. (see 5.3.2).
The surround panel is used to keep the specimen in a given position. It is constructed with outer dimensions of
appropriate size for the apparatus, having an aperture to accommodate the specimen (see Figures 1 to 5).
The principal heat flows through the surround panel and the calibration panel (or test specimen) are shown in Figure
8. The boundary edge heat flow due to the location of the calibration panel in the surround panel is determined
separately as a linear thermal transmittance, Y .
The procedure in this standard includes a correction for the boundary edge heat flow, so that standardized and
reproducible thermal transmittance properties are obtained.
The magnitude of the boundary edge heat flow as a function of geometry, calibration panel thickness and thermal
conductivity is determined by tabulated values given EN ISO 12567-1:2000, annex B.
5 Requirements for test specimen and apparatus
5.1 General
The test apparatus shall conform to the requirements specified in EN 1946-4, EN ISO 8990 and EN ISO 12567-1.
5.2 Surround panels
For details see EN ISO 12
...