1、BS ISO 18740:2016Turbocompressors Performance test code Simplified acceptance testBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 18740:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 18740:2016.The UK participation
2、in its preparation was entrusted to TechnicalCommittee MCE/8/-/1, Compressors - Safety.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for it
3、s correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 81459 4ICS 23.140Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strat
4、egy Committee on 31 July 2016.Amendments/corrigenda issued since publicationDateT e x t a f f e c t e dBS ISO 18740:2016 ISO 2016Turbocompressors Performance test code Simplified acceptance testTurbocompresseurs Code dessais des performances Essai de rception simplifiINTERNATIONAL STANDARDISO18740Fi
5、rst edition2016-07-15Reference numberISO 18740:2016(E)BS ISO 18740:2016ISO 18740:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise i
6、n 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 ISOs member body in the country of the requester.ISO copyright officeCh. de B
7、landonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 18740:2016ISO 18740:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Symbols 34.1 Symbols and units 34.2 Subscripts 35 Test
8、conditions, limitations and allowances 35.1 General . 35.2 Multi-stage compressor Operational limitations . 45.3 Performance acceptance allowances . 46 Measuring methods . 46.1 Measurement of volume flow rate at standard discharge point (package) 46.2 Method of determining condensate rate 56.2.1 Con
9、densate correction 56.2.2 Collection and measurement of condensate 56.2.3 Measurement of compressor power input 56.3 Measurement of shaft speed . 57 Test procedure and report . 57.1 Preliminary tests . 57.2 Preliminary test and acceptance test . 57.3 Adjustments 57.4 Readings . 57.5 Test report . 68
10、 Computation of test results . 68.1 General . 68.2 Volume flow rate 68.2.1 Volume flow rate correction 68.2.2 Influence of speed, temperatures, pressures, humidity . 68.2.3 Condensate formation correction factor . 78.3 Specific power consumption correction . 78.3.1 Inlet pressure correction 88.3.2 P
11、ressure ratio correction 88.3.3 Cooling water temperature correction . 88.4 Packaged compressor power input . 8Annex A (informative) Example test report 9Bibliography .11 ISO 2016 All rights reserved iiiContents PageBS ISO 18740:2016ISO 18740:2016(E)ForewordISO (the International Organization for St
12、andardization) 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 rig
13、ht to be represented 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.The procedures
14、 used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rul
15、es of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).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. Details of any patent rights identi
16、fied during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on
17、 the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is IS
18、O/TC 118, Compressors and pneumatic tools, machines and equipment, Subcommittee SC 6, Air compressors and compressed air systems.iv ISO 2016 All rights reservedBS ISO 18740:2016ISO 18740:2016(E)IntroductionISO 5389 is the primary International Standard for performance statements of dynamic compresso
19、rs of all types.For electrically driven packaged air compressors of standard types, which are constructed to specifications determined by the manufacturer, and which are sold against performance data published in the manufacturers sales documentation, ISO 5389 provides for demanding conditions to be
20、 met for such standard packages.To allow performance statements to be made for standard types, this simplified code has been developed where the performance statement can be given based on specified test conditions (see Table 1), where the key measured variables are maintained within identified test
21、 limitations (see Table 2).The performance statement is valid, provided it is within the identified acceptance allowances (see Table 3) for volume flow rate, specific power consumption, and unloaded power consumption.Whereas ISO 5389 addresses any type of dynamic compressor, this simplified Internat
22、ional Standard addresses centrifugal compressors only which are of the fixed speed type and are electrically driven packaged air compressors. It is envisaged that at a later date, variable speed types will also be included.This International Standard will ultimately become an annex of ISO 5389 once
23、sufficient experience has been gained from its use in the field. In its current form, it complements ISO 5389 for standard packages, but where acceptance tests are required to demonstrate fulfilment of the order conditions and guarantees specified by the client in a supply contract, then ISO 5389 is
24、 still the primary reference International Standard. ISO 2016 All rights reserved vBS ISO 18740:2016BS ISO 18740:2016Turbocompressors Performance test code Simplified acceptance test1 ScopeThis International Standard applies to any fixed (constant) speed, liquid cooled, packaged centrifugal air comp
25、ressor which incorporates a centrifugal compression element of any type driven by an electric motor.This International Standard defines and describes acceptance tests for electrically driven packaged air compressors of standard types which are constructed to specifications determined by the manufact
26、urer and which are sold against performance data published in the manufacturers sales documentation.NOTE Items supplied shipped loose for installation at site are not considered to be a part of the compressor package.Such compressors are designed to draw in atmospheric air from their immediate surro
27、undings and the performance data offered by the manufacturer usually relates to a normal ambient air inlet pressure.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only th
28、e edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1217, Displacement compressors Acceptance testsISO 3857-1, Compressors, pneumatic tools and machines Vocabulary Part 1: GeneralISO 3857-2, Compressors, pneumatic tool
29、s and machines Vocabulary Part 2: CompressorsISO 5167-1, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirementsISO 9300, Measurement of gas flow by means of critical flow Venturi nozzles
30、3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 3857-1, ISO 3857-2, ISO 1217 and the following apply.3.1ambient pressureabsolute pressure of the atmospheric air measured in the vicinity of the compressor3.2ambient temperaturetotal temperature of the a
31、tmospheric air in the vicinity of the compressor but unaffected by it3.3centrifugal air compressorcomprise machines in which inlet, compression, and discharge are continuous flow processesNote 1 to entry: The gas is conveyed and compressed in impellers and decelerated with further increase in pressu
32、re in fixed vaned or vaneless stators.INTERNATIONAL STANDARD ISO 18740:2016(E) ISO 2016 All rights reserved 1BS ISO 18740:2016ISO 18740:2016(E)3.4external coolantliquid medium externally supplied to the compressor to which the compression heat is finally rejected3.5packaged compressorcompressor unit
33、, fully piped and wired and generally includes all ancillary items necessary for their effective operation as a complete self-contained air compressor installation3.6packaged compressor (electrical) power inputsum of the electrical power inputs to the prime mover and all other ancillary and auxiliar
34、y items included in the standard packageNote 1 to entry: The total given is at the specified electrical supply conditions (voltage, phase and frequency) stated by the manufacturer in his sales data at loaded test conditions.3.7pressure ratiodischarge pressure divided by the inlet pressure3.8specific
35、 power consumptionpackaged compressor input power (3.6) per unit of compressor actual volume flow rate (3.12)3.9standard discharge point (package)terminal discharge point of the compressor, typically at the discharge flange of the package3.10standard inlet point (package)point at which ambient air e
36、nters the packageNote 1 to entry: Unless otherwise indicated by the manufacturer.Note 2 to entry: If filter is not included, refer to Table 1.SOURCE: ISO 1217:2009, 3.1.24, Note 2 to entry modified3.11unloaded power consumptionsum of the electrical power inputs to the prime mover and all other ancil
37、lary and auxiliary items included in the standard packageNote 1 to entry: The total given is at the specified electrical supply conditions (voltage, phase, and frequency) stated by the manufacturer in his sales data at unloaded test conditions.3.12volume flow rate3.12.1measuredvolume flow rate of ai
38、r, compressed and delivered at the standard discharge point (3.9), referred to conditions of total temperature, total pressure and composition prevailing at the standard inlet point3.12.2correctedvolume flow rate of air, compressed and delivered at the standard discharge point (3.9), corrected for m
39、achine behaviour at specified test conditionsNote 1 to entry: The specified test conditions are given in Table 1.2 ISO 2016 All rights reservedBS ISO 18740:2016ISO 18740:2016(E)4 Symbols4.1 Symbols and unitsSymbol Term SI unitOther practical unitsf Correction factor f1Correction factor for influence
40、 of speed, temperatures, pres-sures, and humidity f2Correction factor for condensed water vapour at the specified free air condition f4Correction factor for inlet pressure f5Correction factor for pressure ratio f6Correction factor for cooling water temperature mMass flow kg/s N Rotational frequency
41、(shaft speed) s-1min-1p Pressure Pa MPa, bar, mbarP Power W MW, kW Pressure ratio 1 R Specified gas constant J/(kgK) SPC Specific power consumption T Thermodynamic temperature K VVolume flow m3/s m3/h, m3/min, L/s4.2 SubscriptsSubscript Term Remarksa Absoluteamb Ambient Air, temperaturecond Condensa
42、tecorr Correctedg Guaranteem MassCharacterizes the mass specific rates of flow, energies, and volumespk PackageR ReadingIndicates the quantities read during the test or predetermined as test conditionsvap VapourW Coolant5 Test conditions, limitations and allowances5.1 GeneralThe test conditions shal
43、l be as close as is reasonably possible to the conditions specified in Table 1. ISO 2016 All rights reserved 3BS ISO 18740:2016ISO 18740:2016(E)Table 1 Specified test conditionsQuantity UnitValueOption A Option BRelative humidity % 0 60Absolute ambient pressure bara 1 1Inlet pressure drop bara 0,01
44、0,01Inlet temperature C 20 35Coolant temperature C 20 30Gas constant J/(kgK) 287 291When an inlet filter is not an integral part of the acceptance test, a test air filter/piping system with this inlet pressure drop specification shall be mounted.The option chosen shall be identified in published lit
45、erature.The test limitations apply to either of the options in Table 1 that have been selected for the chosen specified test conditions and shall not exceed those given in Table 2.Table 2 Test limitationsMeasured variable Maximum permissible deviationsSpeed 0,5 %Absolute ambient pressure 5 %Inlet te
46、mperature 8,5 CCoolant temperature 8,5 COverall pressure ratio 2 %External coolant flow rate 5 %5.2 Multi-stage compressor Operational limitationsFor multi-stage compressors, the machine should be capable of producing a minimum discharge pressure of 10 % greater than the required operating pressure
47、at customer conditions. When it is not feasible to test a compressor within this limitation and the limitations specified in Table 2, it is recommended that the test should be carried out as an individually specified and guaranteed machine in accordance with ISO 5389.5.3 Performance acceptance allow
48、ancesThe compressor on test will be deemed to be acceptable provided the results obtained do not differ from the specified performance by more than the allowances given in Table 3.Table 3 Performance acceptance allowancesVolume flow rateSpecific power consumptionUnloaded power consumption4 % +5 % +1
49、0 %6 Measuring methods6.1 Measurement of volume flow rate at standard discharge point (package)The measurement of the volume flow rate at the standard discharge point (package) shall be done using ISO 5167-1 or ISO 9300.4 ISO 2016 All rights reservedBS ISO 18740:2016ISO 18740:2016(E)6.2 Method of determining condensate rate6.2.1 Condensate correctionIf the compressor package has no means of condensing moisture from the air being compressed, no correction shall be made for m
