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EN 675:2011

Current
Current

The latest, up-to-date edition.

Glass in building - Determination of thermal transmittance (U value) - Heat flow meter method
Published date

15-06-2011

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Basic formula
5 Brief outline of the measuring procedure
6 Test apparatus
7 Calibration of the test apparatus
8 Dimensions of the specimens
9 Preparation of the specimens
10 Performance of the measurements
11 Evaluation of the results
12 Expression of results
13 Test report
Bibliography

This European Standard specifies a measurement procedure to determine the thermal transmittance of glazing with flat and parallel surfaces. For the purpose of this Standard, structured surfaces may be considered to be flat..This European Standard applies to multiple glazing with outer panes which are not transparent to far infrared radiation (in the wavelength range 5 to 50μm), which is the case for soda lime silicate glass products, borosilicate glass and glass ceramics. Internal elements can be far infrared transparent.The procedure specified in this European Standard determines the U value (thermal transmittance) in the central area of glazing. The edge effects due to the thermal bridge through the spacer of an insulating glass unit or through the window frame are not included.The edge effects due to the thermal bridge through the spacer of an insulating glass unit or through the window frame are excluded. Energy transfer due to solar radiation is also excluded.The procedure specified in this European Standard should be considered only when the thermal transmittance of the glazing cannot be calculated in accordance with EN 673.The determination of the thermal transmittance is performed for conditions which correspond to the average situation for glazing in practice.NOTEPatterned glass is an example of a glass with a structured surface;For the purposes of product comparison, a vertical position of the glazing is specified (see Clause 10).U values evaluated according to the present standard are used for product comparison as well as for other purposes, in particular for predicting:- heat loss through glazing;- conduction heat gains in summer;- condensation on glazing surfaces;- the effects of the absorbed solar radiation in determining the solar factor (see A.2).Reference should be made to A.3, A.4, A.5 or other European Standards dealing with heat loss calculations for the application of glazing U values determined by this Standard.The determination of the thermal transmittance is performed for conditions which correspond to the average situation for glazing in practice.NOTEPatterned glass is an example of a glass with a structured surface;

Committee
CEN/TC 129
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

Standards Relationship
UNE-EN 675:1998 Identical
NBN EN 675 : 2011 Identical
NF EN 675 : 2011 Identical
NEN EN 675 : 2011 Identical
NS EN 675 : 2011 Identical
I.S. EN 675:2011 Identical
PN EN 675 : 2011 Identical
SN EN 675 : 2011 Identical
UNI EN 675 : 2011 Identical
BS EN 675:2011 Identical
DIN EN 675:2011-09 Identical
UNE-EN 675:2011 Identical

01/105397 DC : DRAFT JULY 2001 PREN 1748-1-2 - GLASS IN BUILDING - SPECIAL BASIC PRODUCTS - PART 1-2: BOROSILICATE GLASS - EVALUATION OF CONFORMITY
04/30113929 DC : DRAFT MAY 2004 EN ISO 10077-1 - THERMAL PERFORMANCE OF WINDOWS, DOORS AND SHUTTERS - CALCULATION OF THERMAL TRANSMITTANCE - PART 1: GENERAL
DIN EN 14963 E : 2006 ROOF COVERINGS - CONTINUOUS ROOFLIGHTS OF PLASTICS WITH OR WITHOUT UPSTANDS - CLASSIFICATION, REQUIREMENTS AND TEST METHODS
I.S. EN ISO 12631:2017 THERMAL PERFORMANCE OF CURTAIN WALLING - CALCULATION OF THERMAL TRANSMITTANCE (ISO 12631:2017)
ISO 10077-1:2017 Thermal performance of windows, doors and shutters — Calculation of thermal transmittance — Part 1: General
I.S. EN ISO 52018-1:2017 ENERGY PERFORMANCE OF BUILDINGS - INDICATORS FOR PARTIAL EPB REQUIREMENTS RELATED TO THERMAL ENERGY BALANCE AND FABRIC FEATURES - PART 1: OVERVIEW OF OPTIONS (ISO 52018-1:2017)
ISO 52022-1:2017 Energy performance of buildings — Thermal, solar and daylight properties of building components and elements — Part 1: Simplified calculation method of the solar and daylight characteristics for solar protection devices combined with glazing
UNI EN 1279-5 : 2010 GLASS IN BUILDING - INSULATING GLASS UNITS - PART 5: EVALUATION OF CONFORMITY
I.S. EN 14963:2006 ROOF COVERINGS - CONTINUOUS ROOFLIGHTS OF PLASTICS WITH OR WITHOUT UPSTANDS - CLASSIFICATION, REQUIREMENTS AND TEST METHODS
UNE-EN ISO 10077-1:2010 Thermal performance of windows, doors and shutters - Calculation of thermal transmittance - Part 1: General
BS EN 1096-1:2012 Glass in building. Coated glass Definitions and classification
BS EN 673:2011 Glass in building. Determination of thermal transmittance (U value). Calculation method
BS EN 1873 : 2014 PREFABRICATED ACCESSORIES FOR ROOFING - INDIVIDUAL ROOFLIGHTS OF PLASTICS - PRODUCT SPECIFICATION AND TEST METHODS
DIN EN 13947:2007-03 THERMAL PERFORMANCE OF CURTAIN WALLING - CALCULATION OF THERMAL TRANSMITTANCE
UNE-EN 410:2011 Glass in building - Determination of luminous and solar characteristics of glazing
DIN EN ISO 14438:2002-09 GLASS IN BUILDING - DETERMINATION OF ENERGY BALANCE VALUE - CALCULATION METHOD
01/105399 DC : DRAFT JULY 2001 PREN 14178-2 - GLASS IN BUILDING - BASIC ALKALINE EARTH SILICATE GLASS PRODUCTS - PART 2: EVALUATION OF CONFORMITY
BS EN 50583-1:2016 Photovoltaics in buildings BIPV modules
BS EN ISO 12631:2017 Thermal performance of curtain walling. Calculation of thermal transmittance
01/108539 DC : DRAFT NOV 2001 PREN 572-9 - GLASS IN BUILDING - BASIC SODA LIME SILICATE GLASS - PART 9: EVALUATION OF CONFORMITY
ISO 12631:2017 Thermal performance of curtain walling — Calculation of thermal transmittance
15/30319715 DC : 0 BS EN 1279-5 - GLASS IN BUILDING - INSULATING GLASS UNITS - PART 5: EVALUATION OF CONFORMITY
EN ISO 52022-1:2017 Energy performance of buildings - Thermal, solar and daylight properties of building components and elements - Part 1: Simplified calculation method of the solar and daylight characteristics for solar protection devices combined with glazing (ISO 52022-1:2017)
DIN EN 1279-5:2015-08 (Draft) GLASS IN BUILDING - INSULATING GLASS UNITS - PART 5: EVALUATION OF CONFORMITY
I.S. EN 673:2011 GLASS IN BUILDING - DETERMINATION OF THERMAL TRANSMITTANCE (U VALUE) - CALCULATION METHOD
I.S. EN 1873:2014 PREFABRICATED ACCESSORIES FOR ROOFING - INDIVIDUAL ROOFLIGHTS OF PLASTICS - PRODUCT SPECIFICATION AND TEST METHODS
I.S. EN 410:2011 GLASS IN BUILDING - DETERMINATION OF LUMINOUS AND SOLAR CHARACTERISTICS OF GLAZING
DIN EN 1873:2016-07 PREFABRICATED ACCESSORIES FOR ROOFING - INDIVIDUAL ROOFLIGHTS OF PLASTICS - PRODUCT SPECIFICATION AND TEST METHODS
I.S. EN 1096-1:2012 GLASS IN BUILDING - COATED GLASS - PART 1: DEFINITIONS AND CLASSIFICATION
UNE-EN 13947:2011 Thermal performance of curtain walling - Calculation of thermal transmittance
02/103123 DC : DRAFT APR 2002 BS EN 14449 - GLASS IN BUILDING - LAMINATED GLASS AND LAMINATED SAFETY GLASS - EVALUATION OF CONFORMITY
EN 12898:2001 Glass in building - Determination of the emissivity
BS EN ISO 52018-1:2017 Energy performance of buildings. Indicators for partial EPB requirements related to thermal energy balance and fabric features Overview of options
16/30310958 DC : 0 BS EN ISO 12631 - THERMAL PERFORMANCE OF CURTAIN WALLING - CALCULATION OF THERMAL TRANSMITTANCE
11/30244795 DC : 0 BS EN 1096-1 - GLASS IN BUILDING - COATED GLASS - PART 1: DEFINITIONS AND CLASSIFICATION
12/30266506 DC : 0 BS EN 50583 - PHOTOVOLTAICS IN BUILDINGS
00/106948 DC : DRAFT OCT 2000 PREN 13947 - THERMAL PERFORMANCE OF CURTAIN WALLING - CALCULATION OF THERMAL TRANSMITTANCE
DIN EN 14963:2006-12 Roof coverings - Continuous rooflights of plastics with or without upstands - Classification, requirements and test methods
EN 1279-5:2005+A2:2010 Glass in building - Insulating glass units - Part 5: Evaluation of conformity
NF EN 1279-5 : 2005 + A2 2010 GLASS IN BUILDING - INSULATING GLASS UNITS - PART 5: EVALUATION OF CONFORMITY
PREN 1279-5 : DRAFT 2015 GLASS IN BUILDING - INSULATING GLASS UNITS - PART 5: EVALUATION OF CONFORMITY
I.S. EN 12898:2001 GLASS IN BUILDING - DETERMINATION OF THE EMISSIVITY
ISO 52018-1:2017 Energy performance of buildings — Indicators for partial EPB requirements related to thermal energy balance and fabric features — Part 1: Overview of options
I.S. EN 1279-5:2005 GLASS IN BUILDING - INSULATING GLASS UNITS - PART 5: EVALUATION OF CONFORMITY
DIN EN 673:2011-04 Glass in building - Determination of thermal transmittance (U value) - Calculation method
DIN EN 410:2011-04 Glass in building - Determination of luminous and solar characteristics of glazing
BS EN 1395-3:2007 Thermal spraying. Acceptance inspection of thermal spraying equipment Arc spraying
BS EN 410:2011 Glass in building. Determination of luminous and solar characteristics of glazing
EN 673:2011 Glass in building - Determination of thermal transmittance (U value) - Calculation method
UNI EN 673 : 2011 GLASS IN BUILDING - DETERMINATION OF THERMAL TRANSMITTANCE (U VALUE) - CALCULATION METHOD
UNI EN 1096-1 : 2012 Glass in building - Coated glass - Part 1: Definitions and classification
UNI EN 410 : 2011 GLASS IN BUILDING - DETERMINATION OF LUMINOUS AND SOLAR CHARACTERISTICS OF GLAZING
06/30149044 DC : DRAFT APR 2006 EN 13947 - THERMAL PERFORMANCE OF CURTAIN WALLING - CALCULATION OF THERMAL TRANSMITTANCE
15/30312819 DC : 0 BS EN ISO 52022-1 - ENERGY PERFORMANCE OF BUILDINGS - THERMAL, SOLAR AND DAYLIGHT PROPERTIES OF BUILDING COMPONENTS AND ELEMENTS - PART 1: SIMPLIFIED CALCULATION METHOD OF THE SOLAR AND DAYLIGHT CHARACTERISTICS FOR SOLAR PROTECTION DEVICES COMBINED WITH GLAZING
I.S. EN ISO 10077-1:2017 THERMAL PERFORMANCE OF WINDOWS, DOORS AND SHUTTERS - CALCULATION OF THERMAL TRANSMITTANCE - PART 1: GENERAL (ISO 10077-1:2017)
PREN 50583 : DRAFT 2012 PHOTOVOLTAICS IN BUILDINGS
BS EN ISO 52022-1:2017 Energy performance of buildings. Thermal, solar and daylight properties of building components and elements Simplified calculation method of the solar and daylight characteristics for solar protection devices combined with glazing
01/105398 DC : DRAFT JULY 2001 PREN 1748-2-2 - GLASS IN BUILDING - SPECIAL BASIC PRODUCT - PART 2-2: GLASS CERAMIC - EVALUATION OF CONFORMITY
I.S. EN ISO 52022-1:2017 ENERGY PERFORMANCE OF BUILDINGS - THERMAL, SOLAR AND DAYLIGHT PROPERTIES OF BUILDING COMPONENTS AND ELEMENTS - PART 1: SIMPLIFIED CALCULATION METHOD OF THE SOLAR AND DAYLIGHT CHARACTERISTICS FOR SOLAR PROTECTION DEVICES COMBINED WITH GLAZING (ISO 52022-1:2017)
PREN 13031-1 : DRAFT 2017 GREENHOUSES - DESIGN AND CONSTRUCTION - PART 1: COMMERCIAL PRODUCTION GREENHOUSES
UNE-EN 1096-1:2012 Glass in building - Coated glass - Part 1: Definitions and classification
BS EN 13947:2006 Thermal performance of curtain walling. Calculation of thermal transmittance
BS EN 13363-1 : 2003 SOLAR PROTECTION DEVICES COMBINED WITH GLAZING - CALCULATION OF SOLAR AND LIGHT TRANSMITTANCE - PART 1: SIMPLIFIED METHOD
BS EN ISO 14438:2002 Glass in building. Determination of energy balance value. Calculation method
ISO 14438:2002 Glass in building — Determination of energy balance value — Calculation method
UNE EN 410 : 2011 GLASS IN BUILDING - DETERMINATION OF LUMINOUS AND SOLAR CHARACTERISTICS OF GLAZING
UNE-EN 1873:2015 Prefabricated accessories for roofing - Individual rooflights of plastics - Product specification and test methods
EN ISO 10077-1:2017 Thermal performance of windows, doors and shutters - Calculation of thermal transmittance - Part 1: General (ISO 10077-1:2017, Corrected version 2020-02)
EN 13947:2006 Thermal performance of curtain walling - Calculation of thermal transmittance
EN 14963:2006 Roof coverings - Continuous rooflights of plastics with or without upstands - Classification, requirements and test methods
EN ISO 14438:2002 Glass in building - Determination of energy balance value - Calculation method (ISO 14438:2002)
EN 1873:2014+A1:2016 Prefabricated accessories for roofing - Individual rooflights of plastics - Product specification and test methods
EN 410:2011 Glass in building - Determination of luminous and solar characteristics of glazing
EN ISO 12631:2017 Thermal performance of curtain walling - Calculation of thermal transmittance (ISO 12631:2017)
BS EN 14963:2006 Roof coverings. Continuous rooflights of plastics with or without upstands. Classification, requirements and test methods
PREN 1096-1 : DRAFT 2011 GLASS IN BUILDING - COATED GLASS - PART 1: DEFINITIONS AND CLASSIFICATION
UNE-EN 50583-1:2016 Photovoltaics in buildings - Part 1: BIPV modules
I.S. EN 13947:2006 THERMAL PERFORMANCE OF CURTAIN WALLING - CALCULATION OF THERMAL TRANSMITTANCE
10/30234542 DC : 0 BS EN ISO 12631 - THERMAL PERFORMANCE OF CURTAIN WALLING - CALCULATION OF THERMAL TRANSMITTANCE
04/30099887 DC : DRAFT MAY 2004 PREN 14963 - ROOF COVERINGS - CONTINUOUS ROOFLIGHTS OF PLASTICS WITH UPSTANDS - CLASSIFICATION, REQUIREMENTS AND TEST METHODS
EN ISO 52018-1:2017 Energy performance of buildings - Indicators for partial EPB requirements related to thermal energy balance and fabric features - Part 1: Overview of options (ISO 52018-1:2017)
BS EN 1279-5 : 2005 GLASS IN BUILDING - INSULATING GLASS UNITS - PART 5: EVALUATION OF CONFORMITY
I.S. EN 50583-1:2016 PHOTOVOLTAICS IN BUILDINGS - PART 1: BIPV MODULES
17/30354665 DC : 0 BS EN 13031-1 - GREENHOUSES - DESIGN AND CONSTRUCTION - PART 1: COMMERCIAL PRODUCTION GREENHOUSES
DIN EN 1096-1:2012-04 Glass in building - Coated glass - Part 1: Definitions and classification
UNE-EN 673:2011 Glass in building - Determination of thermal transmittance (U value) - Calculation method
EN 50583-1:2016 Photovoltaics in buildings - Part 1: BIPV modules
EN 13363-1:2003+A1:2007/AC:2008 SOLAR PROTECTION DEVICES COMBINED WITH GLAZING - CALCULATION OF SOLAR AND LIGHT TRANSMITTANCE - PART 1: SIMPLIFIED METHOD
EN 1096-1:2012 Glass in building - Coated glass - Part 1: Definitions and classification
DIN EN 13363-1:2007-09 SOLAR PROTECTION DEVICES COMBINED WITH GLAZING - CALCULATION OF SOLAR AND LIGHT TRANSMITTANCE - PART 1: SIMPLIFIED METHOD
UNE-EN 1279-5:2006 Glass in building - Insulating glass units - Part 5: Evaluation of conformity

ISO 10211:2017 Thermal bridges in building construction — Heat flows and surface temperatures — Detailed calculations
EN 673:2011 Glass in building - Determination of thermal transmittance (U value) - Calculation method
EN 410:2011 Glass in building - Determination of luminous and solar characteristics of glazing
EN 12898:2001 Glass in building - Determination of the emissivity
EN ISO 13790:2008 Energy performance of buildings - Calculation of energy use for space heating and cooling (ISO 13790:2008)
ISO 8302:1991 Thermal insulation — Determination of steady-state thermal resistance and related properties — Guarded hot plate apparatus
ISO 8301:1991 Thermal insulation Determination of steady-state thermal resistance and related properties Heat flow meter apparatus
EN ISO 10211:2017 Thermal bridges in building construction - Heat flows and surface temperatures - Detailed calculations (ISO 10211:2017)
ISO 10077-1:2017 Thermal performance of windows, doors and shutters — Calculation of thermal transmittance — Part 1: General
ISO 13790:2008 Energy performance of buildings Calculation of energy use for space heating and cooling
EN ISO 10077-1:2017 Thermal performance of windows, doors and shutters - Calculation of thermal transmittance - Part 1: General (ISO 10077-1:2017, Corrected version 2020-02)

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