ISO 12631:2012 Thermal performance of curtain walling — Calculation of thermal transmittance
- Abbreviation
- ISO 12631:2012
- Valid from
- 1/10/2012
- Information provider
- Standards New Zealand,
- Author
- International Organization for Standardization
- Information type
- ISO Standard,
Description
This Standard specifies a method for calculating the thermal transmittance of curtain walls consisting of glazed and/or opaque panels fitted in, or connected to, frames.
The calculation includes:
-
different types of glazing, e.g. glass or plastic; single or multiple glazing; with or without low emissivity coating; with cavities filled with air or other gases;
-
frames (of any material) with or without thermal breaks;
-
different types of opaque panels clad with metal, glass, ceramics or any other material.
Thermal bridge effects at the rebate or connection between the glazed area, the frame area and the panel area are included in the calculation.
Scope
The calculation does not include:
-
effects of solar radiation;
-
heat transfer caused by air leakage;
-
calculation of condensation;
-
effect of shutters;
-
additional heat transfer at the corners and edges of the curtain walling;
-
connections to the main building structure nor through fixing lugs;
-
curtain wall systems with integrated heating.
This resource is cited by:
ISO 12631:2012 Thermal performance of curtain walling — Calculation of thermal transmittance
This document is CITED BY:
-
ISO 13789:2017
ISO 12631:2012 is cited by ISO 13789:2017 Thermal performance of buildings — Transmission and ventilation heat transfer coefficients — Calculation method