ISO INTERNATIONAL STANDARD 18740 First edition 2016-07-15 Turbocompressors Performance test code - Simplified acceptance test Turbocompresseurs - Code d'essais des performances - Essai de réception simplifié Reference number A ISO 18740:2016(E) ISO International Organization for Standardization @IS02016 vided by IHS underI itted without license from IHS IS0 18740:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, Published in Switzerland 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 written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. IsOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org PrganizationforStandardization etworking permitted without license from IHS IS0 18740:2016(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ...1. 3 Terms and definitions 4 Symbols .3 4.1 Symbols and units .3 4.2 Subscripts .3 5 Test conditions, limitations and allowances .3 5.1 General .3 5.2 Multi-stage compressor - Operational limitations ..4 5.3 Performance acceptance allowances .4 .6 Measuring methods .4 6.1 Measurement of volume flow rate at standard discharge point (package) ..4 6.2 Method of determining condensate rate ..5 6.2.1 Condensatecorrection .5 6.2.2 Collection and measurement of condensate .5 6.2.3 Measurement of compressor power input. ..5 6.3 Measurement of shaft speed .5 7 Test procedure and report .5 7.1 Preliminary tests .5 7.2 Preliminary test and acceptance test .5 7.3 Adjustments .5 7.4 Readings. .5 7.5 Test report. .6 8 Computation of test results .6 8.1 General .6 8.2 Volume flow rate. .6 8.2.1 Volume flow rate correction ..6 8.2.2 Influence ofspeed, temperatures, pressures, humidity .6 8.2.3 Condensate formation correction factor 8.3 Specific power consumption correction. .7 8.3.1 Inlet pressure correction ..8 8.3.2 Pressure ratio correction. .8 8.3.3 Cooling water temperature correction ..8 8.4 Packaged compressor power input Annex A (informative) Exampletest report .9 Bibliography .11 iii vided by IHS under lic withoutlicense from IHS