_PTC_23_Edtn_2003.pdf

ATMOSPHERICWATER COOLINGEQUIPMENTATMOSPHERICWATER COOLINGEQUIPMENTASME PTC 23-2003Revision of ANSI/ASME PTC 23-1986(R1997)An American National StandardC05503PERFORMANCE TEST CODESPTC 23-2003ASMECopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ANAMERICANNATIONALSTANDARDATMOSPHERICWATERCOOLINGEQUIPMENTASMEPTC23-2003REVISIONOFANSI/ASMEPTC23-1986(R1997)PERFORMANCETESTCODESCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:November 10,2003This Standard will be revised when the Society approves the issuance of a new edition.There willbe no addenda issued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Interpretations are published on the ASME Web site under the Committee Pages athttp:/www.asme.org/codes/as they are issued.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approve,”“rate,”or“endorse”any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assume any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2003 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.vCommittee Roster.viCorrespondence with the PTC 23 Committee.viiiIntroduction.ixSection 1 Object and Scope.11-1Object.11-2Scope.11-3Uncertainty.1Section 2 Definitions and Description of Terms.32-1Symbols.32-2Definitions.62-3Units.7Section 3 Guiding Principles.83-1Advanced Planning for Test.83-2Agreements Prior to Test.83-3Test Overview.83-4Preparation for Test.93-5Duration of Testing.93-6Stability of Test Conditions.103-7Readings.103-8Limitations.103-9Manufacturers Performance Curves.11Section 4 Instruments and Methods of Measurement.134-1General Requirements.134-2Measurement of Water Flow.134-3Measurement of Water Temperature.174-4Measurement of Air Temperature.184-5Wind Velocity.204-6Tower Pump Head.214-7Measurement of Fan Power.214-8Measurement of Sound Level.224-9Measurement of Atmospheric Pressure.224-10Measurement of WSACC Pressure and Heat Load.224-11Water Analysis.224-12Measurement of Drift Loss.234-13Data Recording.23Section 5 Calculations and Results.245-1General.245-2Water Flow.255-3Water Temperatures.265-4Air Temperatures.275-5Steam Condensing Temperature.275-6Air Velocity.275-7Tower Pumping Head.285-8Fan Power.285-9Atmospheric Pressure.295-10Thermal Capability.29iiiCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.5-11Plume Compliance.305-12Uncertainty.32Section 6 Report of Results.366-1Composition of Report.366-2Report Data.36Figures4-2.1Recommended Velocity Traverse Probe Positions.14Tables3-8Noncondensable Gas Load Limits.124-5.2Upper Level Wind Exponent.215-3Temperature Corrections.26Nonmandatory AppendicesAPerformance Monitoring.37BUltrasonic Flowmeters