ISO 9050:2003

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
• ICS: 81.040.20 - Glass in building
• Technical Committee: ISO/TC 160/SC 2 - Use considerations
• Drafting Committee: ISO/TC 160/SC 2/WG 2 - Light and energy transmission properties and thermal properties of glazing
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 25-May-2023

Relations

• Consolidated By: ISO 8676:2011 - Hexagon head screws with metric fine pitch thread — Product grades A and B
• Effective Date: 06-Jun-2022
• Revises: ISO 9050:1990 - Glass in building — Determination of light transmittance, solar direct transmittance, total solar energy transmittance and ultraviolet transmittance, and related glazing factors
• Effective Date: 15-Apr-2008

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

---------------------- Page: 1 ----------------------
ISO 9050:2003(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.


©  ISO 2003
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland

ii © ISO 2003 — All rights reserved

---------------------- Page: 2 ----------------------
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

---------------------- Page: 3 ----------------------
ISO 9050:2003(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(I
...