ISO INTERNATIONAL STANDARD 5802 First edition 2001-07-15 Industrial fans Performance testing in situ Ventilateurs industriels - Essai de fonctionnement in situ Reference number ISO 5802:2001(E) [So @ ISO 2001 ISO5802:2001(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 shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading 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 the unlikely event ISO2001 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic 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.ch Printed in Switzerland @ISO2001-All rightsreserved ISO 5802:2001(E) Contents Page Foreword... Introduction VI 1 Scope. 2 Normative references . 3 Terms, definitions and symbols... 3.1 Terms and definitions .... 3.2 Symbols.... 14 4 Quantities to be measured. 18 5 General conditions and procedures concerning in situ tests .. 18 5.1 General recommendations .. 18 5.2 Selectionof testpoint when onlythesystem resistance canbevaried...... 5.3 Fans fitted withadjustment devices... 5.4 19 5.5 Selectionofthetestpointwhenthesystemresistancecannotbevaried.. 19 5.6 When correction of the coefficient deduced from the test is not necessary .... 6 Instrumentation.... 20 6.1 Instrumentation for measurement of pressure.. .20 6.2 Measurement of air velocity .. 21 6.3 Measurement of temperature . 23 6.4 Determination of density.... ..24 6.5 Measurementof rotational speed.. .25 7 Determination of fan pressure.. 25 7.1 Locationofpressuremeasurementplane 25 7.2 Measurement of fan pressure.... 8 Determination of flow rate ... 36 8.1 Choiceofmeasuringmethod .36 8.2 Choice of measuring section.. 36 8.3 Determination of flowrate using differential pressure devices... ..38 8.4 Determination of flowrate by velocity area methods ..... .38 9 Determination of power... 9.1 Definition of performance characteristics relating to the power of a fan.. .54 9.2 Losses during transmission of power from the motor to the impeller ... .56 9.3 Methods for determination of power . 9.4 Measuring instruments.... ..59 9.5 Precautions to be taken during in situ tests.... .59 10 Uncertainty associated with the determination of fan performance. .59 10.1 .59 10.2 10.3 Uncertainty of measurement .. ..60 10.4 Specified uncertainties ... .60 10.5 Analysis of uncertainty ... Annex A (normative) Position of exploration lines for a marginal wall profile compatible with a general power law......... Annex B (normative) Determination of the position of the marginal exploration lines in cases not covered by annex A.. stion?served ili IS0 5802:2001(E) Annex C (normative) Minimum straight lengths required upstream and downstream of the differential pressure devices (DP device) used for flow measurement... Annex D (normative) Loss allowance for straight, smooth ducts and standardized airways ... Annex E (normative) Rotating vane anemometer calibration. Bibliography.... @ ISO 2001 - All rights reserved ISO 5802:2001(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.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas liaison with IsO, also take part in the work. IsO collaborates closely with the