ISO 52022-3:2017
Energy performance of buildings - Thermal, solar and daylight properties of building components and elements - Part 3: Detailed calculation method of the solar and daylight characteristics for solar protection devices combined with glazing

Standard No.

ISO 52022-3:2017

Release Date

2017

Published By

International Organization for Standardization (ISO)

Latest

ISO 52022-3:2017

Scope

This document specifies a detailed method, based on spectral data of the transmittance and reflectance of the constituent materials (solar protection devices and the glazing), to determine the total solar energy transmittance, the total light transmittance and other relevant solar-optical data of the combination. If spectral data are not available, the methodology can be adapted to use integrated data. The method is valid for all types of solar protection devices parallel to the glazing such as louvres, venetian blinds, or roller blinds. The blind may be located internally, externally, or enclosed between the panes of the glazing. Ventilation of the blind is allowed for in each of these positions in determining the solar energy absorbed by the glazing or blind components, for vertical orientation of the glazing. The blind component materials may be transparent, translucent or opaque, combined with glazing components with known solar transmittance and reflectance and with known emissivity for thermal radiation. The method is based on a normal incidence of radiation and does not take into account an angular dependence of transmittance or reflectance of the materials. Diffuse irradiation or radiation diffused by solar protection devices is treated as if it were direct. Louvres or venetian blinds are treated as homogenous materials by equivalent solar optical characteristics, which may depend on the angle of the incidence radiation. The current method is limited to vertical installation ±15°. For situations outside the scope of this document; ISO 15099 covers a wider range of situations. The document also gives certain normalized situations, additional assumptions and necessary boundary conditions. NOTE Table 1 in the Introduction shows the relative position of this document within the set of EPB standards in the context of the modular structure as set out in ISO 52000-1.

ISO 52022-3:2017 Referenced Document

• EN 14500:2008 Blinds and shutters - Thermal and visual comfort - Test and calculation methods
• 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
• ISO 10292:1994 Glass in building - Calculation of steady-state U values (thermal transmittance) of multiple glazing
• ISO 52000-1:2017 Energy performance of buildings - Overarching EPB assessment - Part 1: General framework and procedures
• ISO 7345:1987 Thermal insulation; Physical quantities and definitions
• ISO 9050:2003 Glass in building - Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors
• ISO 9288:1989 Thermal insulation; heat transfer by radiation; physical quantities and definitions
• ISO 9488:1999 Solar energy - Vocabulary
• ISO/TR 52000-2:2017 Energy performance of buildings - Overarching EPB assessment - Part 2: Explanation and justification of ISO 52000-1
• ISO/TR 52022-2:2017 Energy performance of buildings - Thermal, solar and daylight properties of building components and elements - Part 2: Explanation and justification

ISO 52022-3:2017 history

• 2017 ISO 52022-3:2017 Energy performance of buildings - Thermal, solar and daylight properties of building components and elements - Part 3: Detailed calculation method of the solar and daylight characteristics for solar protection devices combined with glazing