CEN ISO/TR 17801:2017

Plastics - Standard table for reference global solar spectral irradiance at sea level - Horizontal, relative air mass 1 (ISO/TR 17801:2014)

ISO/TR 17801:2014 provides a reference spectrum to the field of weathering degradation in order to classify solar simulators in the UV, visible and infrared wavelength range.

Kunststoffe - Referenztabelle zur globalen spektralen Bestrahlungsstärke auf Seehöhe - Horizontale, relative Luftmasse 1 (ISO/TR 17801:2014)

Dieser Technische Bericht liefert ein Referenzspektrum für den Bereich der Untersuchung von witterungs-bedingtem Abbau (siehe Tabelle 1), das eine Klassifizierung von Sonnensimulatoren im ultravioletten, sichtbaren und infraroten Wellenlängenbereich ermöglicht.
Die in der Praxis auftretende photochemische Alterung wird in Laborbewitterungsgeräten zeitraffend simu¬liert, wobei eine Sequenz von Klima Episoden höchster Beanspruchung angewendet wird. Der Ziel-wert für die spektrale Bestrahlungsstärke ist in der Tabelle durch die spektrale Bestrahlungsstärke der Global¬strahlung (direkte und diffuse Strahlung) bei wolkenlosem Himmel mit höchstem Sonnenstand zur Tag  und Nachtgleiche am Äquator auf Höhe des Meeresspiegels wie in CIE 85, Tabelle 4, ange¬geben. Dies stellt eine realistische größtmögliche Bestrahlung bei repräsentativen wolkenfreien Bedingungen dar.
Die in Tabelle 1, Bild 2 und Bild 3 enthaltenen Daten wurden mittels SMARTS2, Version 2.9.2[2][3] zur Neuberechnung von CIE 85, Tabelle 4, generiert.
Tabelle 2 enthält die ursprünglichen Daten aus CIE 85, Tabelle 4. Diese Werte werden auch in Bild 2 und Bild 3 gezeigt

Plastiques - Table de référence pour l'irradiance solaire spectrale totale au niveau de la mer - Horizontale, masse d'air relative 1 (ISO/TR 17801:2014)

Polimerni materiali - Standardna razpredelnica referenčne globalne sončne spektralne obsevanosti na morski gladini - Vodoravna, relativna zračna masa 1 (ISO/TR 17801:2014)

ISO/TR 17801:2014 določa referenčni spekter za področje vremenskega staranja za namene razvrstitve simulatorjev sončne svetlobe v razponu valovne dolžine ultravijolične vidne svetlobe in infrardeče svetlobe.

General Information

• Status: Published
• Publication Date: 07-Mar-2017
• ICS: 83.080.01 - Plastics in general
• Technical Committee: CEN/TC 249 - Plastics
• Drafting Committee: CEN/TC 249 - Plastics
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 08-Mar-2017
• Completion Date: 08-Mar-2017
• Ref Project: SIST-TP CEN ISO/TR 17801:2017 - Plastics - Standard table for reference global solar spectral irradiance at sea level - Horizontal, relative air mass 1 (ISO/TR 17801:2014)

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2017
3ROLPHUQLPDWHULDOL6WDQGDUGQDUD]SUHGHOQLFDUHIHUHQþQHJOREDOQHVRQþQH
VSHNWUDOQHREVHYDQRVWLQDPRUVNLJODGLQL9RGRUDYQDUHODWLYQD]UDþQDPDVD
,6275
Plastics - Standard table for reference global solar spectral irradiance at sea level -
Horizontal, relative air mass 1 (ISO/TR 17801:2014)
Plastiques - Table de référence pour l'irradiance solaire spectrale totale au niveau de la
mer - Horizontale, masse d'air relative 1 (ISO/TR 17801:2014)
Ta slovenski standard je istoveten z: CEN ISO/TR 17801:2017
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN ISO/TR 17801
TECHNICAL REPORT
RAPPORT TECHNIQUE
March 2017
TECHNISCHER BERICHT
ICS 83.080.01
English Version
Plastics - Standard table for reference global solar spectral
irradiance at sea level - Horizontal, relative air mass 1
(ISO/TR 17801:2014)
Plastiques - Table de référence pour l'irradiance
solaire spectrale totale au niveau de la mer -
Horizontale, masse d'air relative 1 (ISO/TR
17801:2014)
This Technical Report was approved by CEN on 3 March 2017. It has been drawn up by the Technical Committee CEN/TC 249.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TR 17801:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO/TR 17801:2014 has been prepared by Technical Committee ISO/TC 61 “Plastics” of the
International Organization for Standardization (ISO) and has been taken over as CEN
ISO/TR 17801:2017 by Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by
NBN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of ISO/TR 17801:2014 has been approved by CEN as CEN ISO/TR 17801:2017 without any
modification.
TECHNICAL ISO/TR
REPORT 17801
First edition
2014-06-15
Plastics — Standard table for
reference global solar spectral
irradiance at sea level — Horizontal,
relative air mass 1
Plastiques — Table de référence pour l’irradiance solaire spectrale
totale au niveau de la mer — Horizontale, masse d’air relative 1
Reference number
ISO/TR 17801:2014(E)
©
ISO 2014
ISO/TR 17801:2014(E)
© ISO 2014
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
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Published in Switzerland
ii © ISO 2014 – All rights reserved

ISO/TR 17801:2014(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 References . 1
3 Terms and definitions . 1
4 Reference global solar spectral irradiance at sea level . 2
Annex A (informative) Input file to generate the reference spectrum .14
Bibliography .15
ISO/TR 17801:2014(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 6, Ageing, chemical
and environmental resistance.
iv © ISO 2014 – All rights reserved

ISO/TR 17801:2014(E)
Introduction
The effect of solar radiation on surface of the earth (global radiation) is the most important primary
weathering factor. The photons absorbed by the molecules during radiation exposure are often
[1]
sufficient to split chemical bonds, start photochemical reactions and cause an electron transfer .
The spectral irradiance of the solar radiation is variable locally and in time. A reference spectrum is
therefore required as a basis for the simulation of the spectral irradiance of solar radiation with artificial
radiation sources/radiation systems. Data of the CIE (Commission Internationale de L’Éclairage)
Publication (No. 85, 1989) have been used as a basis for years. Table 4 specifies the spectral irradiance
of global radiation (direct and diffuse radiation) for a cloudless sky, zenith position of the sun by day
and night comparisons at the equator at sea level. But in CIE 85, the data of the global solar irradiance
only begins at 305 nm, the step width is very rough and the calculation code got unexplainably lost.
Therefore, there have been efforts to revise CIE No. 85 for many years. The new Table 1 gives modelled
data (using the SMARTS model version 2.9.2) generated using an air mass zero (AM0) spectrum based
[2][3]
on extraterrestrial spectrum of Gueymard .
TECHNICAL REPORT ISO/TR 17801:2014(E)
Plastics — Standard table for reference global solar
spectral irradiance at sea level — Horizontal, relative air
mass 1
1 Scope
This Technical Report provides a reference spectrum to the field of weathering degradation (see Table 1)
in order to classify solar simulators in the UV, visible and infrared wavelength range.
The photochemical ageing which occurs in practice is simulated with time compression in laboratory
weathering instruments by sequencing maximum stress climate episodes. To give a spectral irradiance
target, the table specifies the spectral irradiance of global radiation (direct and diffuse radiation) with
a cloudless sky, zenith position of the sun by day and night comparisons at the equator at sea level as
defined in Table 4 of CIE No. 85 .This is a realistic maximum exposure under representative clear sky
conditions.
[2]
The data contained in Table 1, Figure 2, and Figure 3 were generated using the SMARTS2 Version 2.9.2
[3]
to recalculate the CIE No. 85, Table 4.
Table 2 contains the original data from CIE No. 85, Table 4. The numbers are shown in Figure 2 and
Figure 3 as well.
2 References
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
CIE No. 85, Technical Report; Solar Spectral Irradiance; 1989
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
global solar irradiance
solar radiant flux, both direct and diffuse, received on a horizontal plane unit area from a solid angle of
2π steradians
–2
Note 1 to entry: It is measured in watts per square metre (W⋅m ).
3.2
spectral irradiance
E
λ
radiant flux per unit area per wavelength interval
–2 –1
Note 1 to entry: It is measured in watts per square metre per nanometre (W⋅m ⋅nm ).
ISO/TR 17801:2014(E)
3.3
air mass
relative optical path length of solar radiation through Earth’s atmosphere for the purpose of this
Technical Report
Note 1 to entry: As solar radiation passes through the atmosphere, it is attenuated by scattering and absorption.
The more atmosphere through which it passes, the greater is the attenuation.
4 Reference global solar spectral irradiance at sea level
The reference global solar spectral irradiance for air mass 1.0 (illustration see Figure 1) is given in
Table 1 and Figure 2 and Figure 3. This is the global distribution (direct and diffuse) of the solar radiation
−2
corresponding to an integrated irradiance of 1 092 W m incident on a sun-facing horizontal plane
considering the ground reflection of 0,2 under the following atmospheric conditions.
— The United States Standard Atmosphere Profile of 1976 (USSA76) except for the prescribed
parameters below:
— total hemispherical horizontal component;
— total column water vapour 1,42 cm;
— total column ozone 0,34 cm;
— aerosol optical depth at 500 nm 0,1.
— The rural aerosol distribution of Shettle and Fenn was assumed.
— A carbon dioxide concentration of 370 ppm by volume was assumed.
— The direct beam included a circumsolar component, as if seen with a 5,6° field of view pyrheliometer.
Annex A contains the SMARTS2 input files used to generate the tabular data in Table 1.
Figure 1 — Air mass coefficient defines the direct optical path length through the Earth’s
atmosphere
2 © ISO 2014 – All rights reserved

ISO/TR 17801:2014(E)
Table 1 — Reference global solar irradiance recalculated with SMART2 (input data from CIE
No. 85, Table 4)
Wave- Spectral Wave- Spectral Wave- Spectral Wave- Spectral Wave- Spectral
length irradiance length irradiance length irradiance length irradiance length irradiance
−2 −1 −2 −1 −2 −1 −2 −1 −2 −1
(nm) (W·m ·nm ) (nm) (W·m ·nm ) (nm) (W·m ·nm ) (nm) (W·m ·nm ) (nm) (W·m ·nm )
285,0 1,85E-11 305,5 0,0760 326,0 0,6710 346,5 0,7450 367,0 1,0310
285,5 6,67E-11 306,0 0,0740 326,5 0,7030 347,0 0,7560 367,5 1,0100
286,0 1,84E-10 306,5 0,0820 327,0 0,6900 347,5 0,7280 368,0 0,9490
286,5 8,17E-10 307,0 0,1010 327,5 0,6710 348,0 0,7240 368,5 0,9410
287,0 2,11E-09 307,5 0,1210 328,0 0,6270 348,5 0,7340 369,0 0,9830
287,5 6,13E-09 308,0 0,1270 328,5 0,6420 349,0 0,7060 369,5 1,0540
288,0 2,35E-08 308,5 0,1350 329,0 0,7130 349,5 0,7230 370,0 1,0670
288,5 5,24E-08 309,0 0,1290 329,5 0,7860 350,0 0,7970 370,5 0,9630
289,0 1,38E-0
...