Glass in building — Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors

ISO 9050:2003 specifies methods of determining light and energy transmittance of solar radiation for glazing in buildings. These characteristic data can serve as a basis for light, heating and ventilation calculations of rooms and can permit comparison between different types of glazing. ISO 9050:2003 is applicable both to conventional glazing units and to absorbing or reflecting solar-control glazing, used as glazed apertures. The appropriate formulae for single, double and triple glazing are given. Furthermore, the general calculation procedures for units consisting of more than components are established. ISO 9050:2003 is applicable to all transparent materials. One exception is the treatment of the secondary heat transfer factor and the total solar energy factor for those materials that show significant transmittance in the wavelength region of ambient temperature radiation (5 microns to 50 microns), such as certain plastic sheets.

Verre dans la construction — Détermination de la transmission lumineuse, de la transmission solaire directe, de la transmission énergétique solaire totale, de la transmission de l'ultraviolet et des facteurs dérivés des vitrages

General Information

Status
Published
Publication Date
01-Sep-2003
Current Stage
9093 - International Standard confirmed
Completion Date
25-May-2023
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ISO 9050:2003 - Glass in building -- Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors
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Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 9050
Second edition
2003-08-15


Glass in building — Determination of
light transmittance, solar direct
transmittance, total solar energy
transmittance, ultraviolet transmittance
and related glazing factors
Verre dans la construction — Détermination de la transmission
lumineuse, de la transmission solaire directe, de la transmission
énergétique solaire totale, de la transmission de l'ultraviolet et des
facteurs dérivés des vitrages





Reference number
ISO 9050:2003(E)
©
ISO 2003

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ISO 9050:2003(E)
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ii © ISO 2003 — All rights reserved

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ISO 9050:2003(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references . 1
3 Determination of characteristic parameters. 2
3.1 General. 2
3.2 Performance of optical measurements. 2
3.3 Light transmittance. 3
3.4 Light reflectance . 5
3.5 Total solar energy transmittance (solar factor) .6
3.6 UV-transmittance . 14
3.7 CIE damage factor. 14
3.8 Skin damage factor . 15
3.9 Colour rendering . 15
4 Reference values. 16
5 Test report. 16
Annex A (normative) Calculation procedures . 22
Bibliography . 27

© ISO 2003 — All rights reserved iii

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ISO 9050:2003(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(I
...

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