EN ISO 10077-2 Thermal Performance of Windows, Doors and Shutters - Part 2: Numerical Method for Frames

This part of the EN ISO 10077 standard, developed by the International Standards Organization (ISO), specifies a method for calculating the thermal transmittance of frame profiles and the linear thermal transmittance of their combination with glass or opaque panels, and gives reference input data.

The method can also be used to evaluate the thermal resistance of louver profiles and the thermal properties of louver boxes and similar components (eg louvers). ISO 10077-2 also gives criteria for validating numerical methods used for calculation.

ISO 10077-2 does not include the effects of solar radiation, heat transfer caused by air leakage, or three-dimensional heat transfer such as point metallic connections. Thermal bridge effects between the frame and the building structure are not included.

This standard is part of a series aimed at international harmonization of the methodology for evaluating the energy performance of buildings. Throughout this series, it is referred to as a set of EPB standards. All EPB standards follow certain rules to ensure overall consistency, openness and transparency.

All EPB standards provide a normative template with informative default options, allowing some flexibility in methods, required input data, and references to other EPB standards. The main target groups of this standard are architects, engineers and regulators.

Use by or for regulators: Where ISO 52000-1 is used in the context of national or regional legal requirements, mandatory options at the national or regional level may be given for such specific applications. These options may be submitted as a national annex or as a separate (eg legal) document (national data). So in this case:

• Editors will choose options;
• The individual user will apply the document to evaluate the energy performance of a building, thus using the choices made by the regulators.

Among the services provided by our organization within the framework of material testing services, there are also EN ISO 10077-2 standard tests. Do not hesitate to contact EUROLAB laboratory for your test and certification requests.