IEC_TS_62796-2013.pdf

IEC/TS 62796 Edition 1.0 2013-05 TECHNICAL SPECIFICATION Energy efficiency in electroheating installations IEC/TS 62796:2013(E)Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 IEC,Geneva,Switzerland 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 IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office Tel.:+41 22 919 02 11 3,rue de Varemb Fax:+41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.Useful links:IEC publications search-www.iec.ch/searchpub The advanced search enables you to find IEC publications by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications released.Available on-line and also once a month by email.Electropedia-www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary(IEV)on-line.Customer Service Centre-webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance,please contact the Customer Service Centre:csciec.ch.Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC/TS 62796 Edition 1.0 2013-05 TECHNICAL SPECIFICATION Energy efficiency in electroheating installations INTERNATIONAL ELECTROTECHNICAL COMMISSION Q ICS 25.180.10 PRICE CODE ISBN 978-2-83220-855-7 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.2 TS 62796 IEC:2013(E)CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope and object.6 2 Normative references.6 3 Terms and definitions.6 3.1 General concepts.7 3.2 Equipment,operations and workloads.7 4 General aspects of energy efficiency measurements in electroheating.9 4.1 General.9 4.2 Instrumentation.9 4.3 Ambient conditions and initial temperature of the workload.9 4.4 Non-ambient pressures.10 4.5 Chemical reactions.10 4.6 Cooling and heat leakage to ambient.10 5 Workload categories and requirements.10 5.1 General.10 5.2 Use of workloads for comparative tests.11 5.3 Use of normal workloads for enthalpy determination.11 5.4 Use of dummy workloads for enthalpy determinations.11 5.5 Use of performance test workloads.11 6 Measurement of electric power and ancillary energy factors.12 6.1 Measurement of cold start-up energy consumption and time.12 6.2 Measurement of hot standby power.12 6.3 Measurement of pressurising and depressurising energy consumption.12 6.4 Measurement of holding power.12 7 Measurement of efficiencies.13 7.1 General.13 7.2 Measurement of electric-only conversion efficiency.13 7.3 Measurement of electroheating energy consumption and efficiency.13 8 Energy recovery.13 8.1 General.13 8.2 Temperature and pressure of the fluid.14 8.3 Hot fluid heat capacity performance factor.14 8.4 Calculations of thermal recovery in the process.14 8.5 Determination of external energy recoverability.14 8.6 Calculation of the endoreversible thermal efficiency for a heat engine(exergy).15 9 Aspects of management of operation flexibility(smart grid connectivity).15 9.1 Load management and smart grid.15 9.2 Applicability to electroheating installations.15 9.3 Tune down times.15 9.4 Shut-down and start-up capability evaluations.16 Bibliography.17 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),