INTERNATIONAL ISO/CIE STANDARD 20086 First edition 2019-01 Light and lighting Energy performance of lighting in buildings Lumiere et éclairage - Performance énergétique de I'éclairage des batiments Reference number IS0/CIE 20086:2019(E) cie @IS0/CIE2019 IS0/CIE 20086:2019(E) COPYRIGHTPROTECTEDDOCUMENT IS0/CIE2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 below orIso'smemberbody inthecountry oftherequester. ISO copyright office CIE Central Bureau CP 401 : Ch. de Blandonnet 8 BabenbergerstraSe 9/9A CH-1214 Vernier, Geneva A-1010 Vienna, Austria Phone: +4122 749 0111 Phone: +43 1 714 3187 Fax: +41 22 749 09 47 Fax: +41 22 749 09 47 Email: [email protected] Email: [email protected] Website: www.iso.org Website:www.cie.co.at Published in Switzerland ii @ IS0/CIE 2019 -All rights reserved IS0/CIE 20086:2019(E) Contents Page Foreword ..V Introduction. ...vi 1 Scope. 2 Normative references 3 Terms and definitions 4 Symbols and abbreviations ..2 4.1 Symbols .2 4.2 Subscripts. .4 5 Description of the methods ..4 5.1 General .4 5.2 Output of the method 1- Comprehensive method 5.3 Optional methods. ..5 Quick calculation method .5 5.3.1 Method 2 5.3.2 Method 3 Direct metering method. .5 6 Method 1 Calculation of the energy required for lighting .6 6.1 Output data .6 6.2 Calculation time steps 6 6.3 Input data. . 6 6.3.1 Lighting system data .6 6.3.2 Product data .7 6.3.3 System design data.. .8 6.3.4 Operating conditions. ..8 6.3.5 Constants and physical data 6.4 Calculation procedure 9 6.4.1 Applicable time step 6.4.2 Operating conditions calculation .9 6.4.3 Energy calculation. .9 6.5 Expenditure factors for lighting systems. ..13 7 Method 2 - Quick calculation of the energy required for lighting .16 7.1 Output data ..16 7.2 Calculation time steps ..16 7.3 Inputdata .17 7.3.1 Lighting system data. ..17 7.3.2 Luminaire data .17 7.3.3 System design data. ..17 7.3.4 Operating conditions. ..17 7.3.5 Constants and physical data .17 7.4 Calculation procedure .17 7.4.1 Applicable time step. .17 7.4.2 Operating conditions calculation ..18 7.4.3 Energy calculation .18 7.5 Expenditure factors for lighting systems 20 8 Method 3 - Metered energy used for lighting. 20 8.1 Output data 20 8.2 Calculation time steps 20 8.3 Input data 20 8.4 Calculation procedure of annual energy .20 9 Quality control. .21 9.1 Method 1. 21 9.2 Method 2.... 21 9.3 Method 3.. 21 @ IS0/CIE 2019 - All rights reserved iii