ISO 10077-2:2012
Thermal performance of windows, doors and shutters — Calculation of thermal transmittance — Part 2: Numerical method for frames
ISO 10077-2:2011 specifies a method and gives reference input data for the calculation of the thermal transmittance of frame profiles and of the linear thermal transmittance of their junction with glazing or opaque panels.
The method can also be used to evaluate the thermal resistance of shutter profiles and the thermal characteristics of roller shutter boxes and similar components (e.g. blinds).
ISO 10077-2:2011 also gives criteria for the validation of numerical methods used for the calculation.
ISO 10077-2:2011 does not include effects of solar radiation, heat transfer caused by air leakage or three‑dimensional heat transfer such as pin point metallic connections. Thermal bridge effects between the frame and the building structure are not included.
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_941619985
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Calculation method
4.1 General principle
4.2 Validation of the calculation programme
4.3 Determination of the thermal transmittance
5 Treatment of solid sections and boundaries
5.1 Solid materials
5.2 Emissivity of surfaces
5.3 Boundaries
5.4 Roller shutter boxes
5.5 Extensions of window frame profiles
6 Treatment of cavities
6.1 General
6.2 Cavities in glazing
6.3 Unventilated air cavities in frames and roller shutter boxes
6.4 Ventilated air cavities and grooves
7 Report
7.1 General
7.2 Geometrical data
7.3 Thermal data
7.4 Results
Annex A (informative) Thermal conductivity of selected materials
Annex B (normative) Surface resistances
Annex C (normative) Determination of the thermal transmittance
Annex D (normative) Examples for the validation of calculation programmes
Annex E (informative) Wood species listed in Annex A
Bibliography
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_941619985
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Calculation method
4.1 General principle
4.2 Validation of the calculation programme
4.3 Determination of the thermal transmittance
5 Treatment of solid sections and boundaries
5.1 Solid materials
5.2 Emissivity of surfaces
5.3 Boundaries
5.4 Roller shutter boxes
5.5 Extensions of window frame profiles
6 Treatment of cavities
6.1 General
6.2 Cavities in glazing
6.3 Unventilated air cavities in frames and roller shutter boxes
6.4 Ventilated air cavities and grooves
7 Report
7.1 General
7.2 Geometrical data
7.3 Thermal data
7.4 Results
Annex A (informative) Thermal conductivity of selected materials
Annex B (normative) Surface resistances
Annex C (normative) Determination of the thermal transmittance
Annex D (normative) Examples for the validation of calculation programmes
Annex E (informative) Wood species listed in Annex A
Bibliography