ISO INTERNATIONAL STANDARD 18523-2 First edition 2018-02 Energy performance of buildings Schedule and condition of building, zone and space usage for energy calculation - Part 2: Residential buildings Performance énergetique des batiments - Plan et conditions d'utilisation des espaces, zones et batiments pour le calcul d'énergie- Partie 2: Batiments résidentiels Reference number IS0 18523-2:2018(E) so Copyright International Organization for Standardization @ IS0 2018 IS0 18523-2:2018(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2018 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 on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 40i: Ch. de Blandonnet 8 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Published in Switzerland Copyightilerational Organizationfor Standardization @ IS0 2018 - All rights reserved IS0 18523-2:2018(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. .1 2 Normative references. ..1 3 Terms and definitions .1 3.1 Space. 2 3.2 Schedule. .3 3.3 Parameters for conditions of building, zone and space usage 4 3.4 Descriptions for daily schedule '5 4 Framework of the schedule and condition for building energy calculation 4.1 Indispensable schedules. 7 4.2 Daily schedule. 4.3 Division of year and daily, weekly,monthly, seasonal and annual allocations of daily schedules 9 5 Conditions for energy calculation included in the schedule and condition of zone and space usage. .11 5.1 Energy needs and uses. .11 5.2 Condition 11 5.2.1 Occupancy or occupancy density 11 5.2.2 Operation of technical building systems and requirement for their services .12 5.2.3 Internal heat gains 14 5.2.4 Operation of movable fittings 15 5.3 Process for determining schedule and condition in housing units 15 5.3.1 Familystructure .15 5.3.2 Time use of daily life of family member(s) .15 5.3.3 Schedule and area for space heating and cooling. .16 5.3.4 Schedule and area of overall ventilation ..16 5.3.5 Schedule and area of local exhaust ventilation .17 5.3.6 Amount of domestic hot water usage .17 5.3.7 Possession and usage of appliances ..17 6 Category of residential building, zone and space .17 6.1 General .17 6.2 Category of space or zone. ..18 6.2.1 Categories of space or zone inside housing unit ..18 6.2.2 Categories of space or zone outside housing unit. .18 Annex A (informative) Examples of time use as daily life of family ..19 Annex B (informative) Format of annual schedule by daily allocation of daily schedules ..23 Annex C (informative) Examples of schedules for space heating and cooling .24 Annex D (informative) Example of schedule and area for local ventilation ..25 Annex E (informative) Examples of schedule and condition for domestic hot water ..26 Annex F (informative) Example of schedule and condition for usage of electric appliances ..27 Annex G (informative) Examples of categories of space and zone of residential buildings ..31 Bibliography .32 Copyight Intematioal OrgISaraizAl rights reserved iii