ISO INTERNATIONAL STANDARD 12213-3 Second edition 2006-11-15 Natural gas Calculation of compression factor - Part 3: Calculation using physical properties Gaz naturel Calcul du facteur de compression - Partie 3: Calcul a partir des caracteristiques physiques Reference number ISO 12213-3:2006(E) Licensed to:Qin, O Downloaded:201 Single user liceno Eand networking prohibited @ ISO 2006 ISO 12213-3:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In ?ISO2006 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 isO at the address below or IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland Licensed to:Qin, Luo Mrs Downloaded:2015-07-17 Single user licence only, copying and networking prohibited @ISO2006-All rights reserved ISO 12213-3:2006(E) Contents Page Foreword 1 Scope 2 Normative references 3 Terms and definitions. 4 Method of calculation .. 4.1 Principle.. 4.2 The SGERG-88 equation 4.3 Input variables...... 4.4 Ranges of application 4.5 Uncertainty ... 5 Computer program ... Annex A (normative) Symbols and units. Annex B (normative) Description of the SGERG-88 method... 10 Annex (normative) Example calculations ... 21 AnnexD(normative)Conversionfactors. .22 Annex E (informative) Specification for pipeline quality natural gas 25 Annex F (informative) Performance over wider ranges of application.. .28 Annex G (informative) Subroutine SGERG.FOR in Fortran .. 33 Bibliography. 38 Licensed to:Qin, Luo Mrs. Downloaded:2015-07-17 ngle user licence only, copying and networking prohibited Is 2006-All rights reserved ii ISO 12213-3:2006(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 InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. 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. ISO 12213-3 was prepared by Technical Committee ISO/TC 193, Natural gas, Subcommittee SC 1, Analysis ofnaturalgas. This second edition cancels and replaces the first edition (IsO 12213-3:1997), which has been technically factor: Part 1: Introduction and guidelines Part 2:Calculation usingmolar-composition analysis Part3:Calculationusingphysicalproperties Licensed to:Qin, Luo Mrs Downloaded:2015-07-17 Single user licence only, copying and networking prohibited iv @ ISO 2006 - All rights