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1、Reference number ISO 5802:2001(E) ISO 2001 INTERNATIONAL STANDARD ISO 5802 First edition 2001-07-15 Industrial fans Performance testing in situ Ventilateurs industriels Essai de fonctionnement in situ Copyright International Organization for Standardization Provided by IHS under license with ISO Lic
2、ensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 00:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5802:2001(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be p
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5、 is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2001 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form o
6、r by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs 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 4
7、7 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2001 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 00:53:29 MDTNo reproduction o
8、r networking permitted without license from IHS -,-,- ISO 5802:2001(E) ISO 2001 All rights reservediii ContentsPage Forewordv Introductionvi 1Scope 1 2Normative references1 3Terms, definitions and symbols.1 3.1Terms and definitions .1 3.2Symbols14 4Quantities to be measured18 5General conditions and
9、 procedures concerning in situ tests 18 5.1General recommendations .18 5.2Selection of test point when only the system resistance can be varied18 5.3Fans fitted with adjustment devices19 5.4System throttling devices allowing the system resistance to be altered19 5.5Selection of the test point when t
10、he system resistance cannot be varied19 5.6When correction of the coefficient deduced from the test is not necessary 20 6Instrumentation20 6.1Instrumentation for measurement of pressure.20 6.2Measurement of air velocity .21 6.3Measurement of temperature .23 6.4Determination of density.24 6.5Measurem
11、ent of rotational speed 25 7Determination of fan pressure25 7.1Location of pressure measurement plane 25 7.2Measurement of fan pressure.27 8Determination of flow rate 36 8.1Choice of measuring method.36 8.2Choice of measuring section36 8.3Determination of flowrate using differential pressure devices
12、.38 8.4Determination of flowrate by velocity area methods.38 9Determination of power.54 9.1Definition of performance characteristics relating to the power of a fan54 9.2Losses during transmission of power from the motor to the impeller56 9.3Methods for determination of power .56 9.4Measuring instrum
13、ents .59 9.5Precautions to be taken during in situ tests.59 10Uncertainty associated with the determination of fan performance59 10.1General59 10.2Performance errors .60 10.3Uncertainty of measurement60 10.4Specified uncertainties .60 10.5Analysis of uncertainty.60 Annex A (normative) Position of ex
14、ploration lines for a marginal wall profile compatible with a general power law67 Annex B (normative) Determination of the position of the marginal exploration lines in cases not covered by annex A.71 Copyright International Organization for Standardization Provided by IHS under license with ISO Lic
15、ensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 00:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5802:2001(E) iv ISO 2001 All rights reserved Annex C (normative) Minimum straight lengths required upstream and downstream of the differ
16、ential pressure devices (DP device) used for flow measurement.74 Annex D (normative) Loss allowance for straight, smooth ducts and standardized airways 82 Annex E (normative) Rotating vane anemometer calibration.84 Bibliography86 Copyright International Organization for Standardization Provided by I
17、HS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 00:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5802:2001(E) ISO 2001 All rights reservedv Foreword ISO (the International Organization for Standardization
18、) 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 repr
19、esented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards ar
20、e drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. 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
21、 vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 5802 was prepared by Technical Committee ISO/TC 117,
22、Industrial fans. Annexes A to E form a normative part of this International Standard. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 00:53:29 MDTNo reproduction or network
23、ing permitted without license from IHS -,-,- ISO 5802:2001(E) vi ISO 2001 All rights reserved Introduction The need to revise existing methods of site testing has been apparent for some time. Bearing in mind the extent of these revisions, it was felt appropriate to expand the method of site testing
24、into a “stand-alone“ document. This would enable the velocity area methods to be fully detailed for all commonly encountered airway cross-sections. It would also allow the addition of descriptive annexes covering the selection of suitable measuring stations and instrument calibration. In accordance
25、with recent International agreements, it will be noted that fan pressure is now defined as the difference between stagnation pressure at the fan inlet and outlet. Stagnation pressure is the absolute pressure which would be measured at a point in a flowing gas if it were brought to rest isentropicall
26、y. For Mach numbers less than 0,2 the gauge stagnation pressure is within 0,6 % of the total pressure. Less emphasis is placed on the use of “fan static pressure“ as this is a conventional quantity only. It is to be anticipated that its use will cease with time. All fluid losses are essentially loss
27、es in stagnation pressure and this has been reflected in the definitions now specified. It should be recognized that the performance of a fan measured under site conditions will not necessarily be the same as that determined from tests using standardized airways. The reasons for such differences are
28、 not only due to the inherently lower accuracy of a site test, but also due to the so-called “system effect factor“ or “installation effect“, where the ducting connections at fan inlet and/or outlet modify its performance. The need for good connections cannot be understated. This International Stand
29、ard specifies the use of “common parts“ immediately adjoining the fans for the consistent determination of pressure and also to ensure that air/gas is presented to the fan as a symmetrical velocity profile free from swirl and undue distortion. Only if these conditions are met, will the performance u
30、nder site conditions equate with those measured in standardized airways. It should also be noted that this International Standard specifies the positioning of velocity-area measuring points according to log-Tchebycheff or log-linear rules. Arithmetic spacing can lead to considerable error unless a v
31、ery high number of point readings are taken. (These would then have to be plotted graphically and the area under the curve obtained using planimetry. The true average velocity would be this area divided by the dimensional ordinates). It is outside the scope of this International Standard to assess t
32、he additional uncertainty where the lengths of straight duct either side of the measuring station are less than those specified in annex C. Guidance is, however, given in ISO/TR 5168 and ISO 7194, from which it will be seen that where a significant radial component exists, uncertainties can consider
33、ably exceed the normally anticipated 4 % at 95 % confidence levels. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 00:53:29 MDTNo reproduction or networking permitted with
34、out license from IHS -,-,- INTERNATIONAL STANDARDISO 5802:2001(E) ISO 2001 All rights reserved1 Industrial fans Performance testing in situ 1Scope This International Standard specifies tests for determining one or more performance characteristics of fans installed in an operational circuit when hand
35、ling a monophase fluid. 2Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. How
36、ever, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and
37、 IEC maintain registers of currently valid International Standards. ISO 5167-1:1991, Measurement of fluid flow by means of pressure differential devices Part 1: Orifice plates, nozzles and Venturi tubes inserted in circular cross-section conduits running full. ISO 5801:1997, Industrial fans Performa
38、nce testing using standardized airways. IEC 60034-1, Rotating electrical machine Part 1: Rating and performance. IEC 60051-8, Direct acting indicating analogue electrical measuring instruments and their accessories Part 8: Special requirements for accessories. 3Terms, definitions and symbols 3.1Term
39、s and definitions For the purposes of this International Standard, the following terms and definitions apply. The quantities referred to are time-averaged mean values. Fluctuations which affect the quantities being measured may be accounted for by repeating measurements at appropriate time intervals
40、. Mean values may then be calculated which are taken as the steady-state value. 3.1.1 air air or other gas, except when specifically referred to as atmospheric air 3.1.2 standard air atmospheric air having a density of exactly 1,2 kg?m3 NOTEAtmospheric air at a temperature of 16 C, a pressure of 100
41、 000 Pa and a relative humidity of 65 %, has a density of 1,2 kg?m3, but these conditions are not part of the definition. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 00
42、:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5802:2001(E) 2 ISO 2001 All rights reserved 3.1.3 fan rotary machine which maintains a continuous flow of air at a pressure ratio not normally exceeding 1,3 3.1.4 impeller rotating part of a fan which, by means of i
43、ts blades, transfers energy to the air 3.1.5 casing those stationary parts of a fan which direct the flow of air from the fan inlet opening(s) to the fan outlet opening(s) 3.1.6 duct airway in which the air velocity is comparable with that at the fan inlet or outlet 3.1.7 chamber airway in which the
44、 air velocity is small compared with that at the fan inlet or outlet 3.1.8 transition piece section airway along which there is a gradual change of cross-sectional area and/or shape 3.1.9 test enclosure room, or other space protected from draught, in which the fan and test airways are situated 3.1.1
45、0 area of the conduit section Ax area of the conduit at section x 3.1.11 fan inlet area A1 by convention, the gross area in the inlet plane inside the casing NOTEThe fan inlet plane should be taken as that surface bounded by the upstream extremity of the air moving device. In this International Stan
46、dard the fan inlet plane is indicated by plane 1 (see Figure 1). 3.1.12 fan outlet area A2 by convention, the gross area in the outlet plane inside the casing without deduction for motors, fairings or other obstructions NOTEThe fan outlet plane should be taken as that surface bounded by the downstre
47、am extremity of the air moving device. In this International Standard the outlet is indicated by plane 2 (see Figure 1). 3.1.13 temperature t air or fluid temperature measured by a temperature sensor Copyright International Organization for Standardization Provided by IHS under license with ISO Lice
48、nsee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 00:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5802:2001(E) ISO 2001 All rights reserved3 a)Axial fan b)Centrifugal fan Key 1Plane 15Transition 2Plane 26Diffuser 3Inlet box7Transition 4Inlet duct8Outlet duct Figure 1 Location of pressure measurement planes for site testing Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=