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1、AN AMERICAN NATIONAL STANDARDSteamTrapsASME PTC 39-2005(Revision and Redesignation of ASME PTC 39.1-1980)Performance Test CodesASME PTC 39-2005(Revision and Redesignation of ASME PTC 39.1-1980)Steam TrapsThree Park Avenue New York, NY 10016AN AMERICAN NATIONAL STANDARDPerformance Test CodesDate of I

2、ssuance: November 11, 2005This Code will be revised when the Society approves the issuance of a new edition. There will be noaddenda issued to ASME PTC 39-2005.ASME issues written replies to inquiries as code cases and interpretations of technical aspects of thisdocument. Code cases and interpretati

3、ons are published on the ASME Web site under the CommitteePages at http:/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 Nation

4、al Stan-dards. The Standards Committee that approved the code or standard was balanced to assure that individuals from com-petent and concerned interests have had an opportunity to participate. The proposed code or standard was made avail-able for public review and comment that provides an opportuni

5、ty for additional public input 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 conn

6、ection with any itemsmentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringe-ment of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advisedthat determination of the validity of an

7、y such patent rights, and the risk of infringement of such rights, is entirely theirown responsibility.Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as gov-ernment or industry endorsement of this code or standard.ASME accepts respons

8、ibility 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

9、 the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue, New York, NY 10016-5990Copyright 2005 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSNotice . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viCommittee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11、. . . . . . . . . . . . . . . . . . . . . . . . viiCorrespondence With the PTC 39 Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

12、Section 1 Object and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2 Object . . . . . . . . . . . . . .

13、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3 Uncertainty Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Section 2 Definitions and Descriptions of Terms . . . . . . . . . . . . . . .

14、 . . . . . . . . . . . . . . . . . . 12-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2 Steam Trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15、. .12-3 Capacity of a Steam Trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-4 Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-5 Inlet Subcooling . . . . . . . . .

16、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-6 Subcooled Condensate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Section 3 Guiding Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17、 . . . . . . . . . . . . . . . . . . . . 23-1 Items on Which Agreement Shall Be Reached . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-2 Qualifications of Person Responsible for the Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-3 Duties of Person Responsible for t

18、he Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-4 Procedures and Test Apparatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-5 Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19、. . . . . . . . . . . . . . . . 23-6 Calibration of Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-7 Data Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23-8 Adjustme

20、nts During Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-9 Records and Test Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-10 Calculations . . . . . . . . . . . . . . . . . . . . . . . .

21、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Section 4 Instruments and Methods of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22、. . . . . . 34-2 Calibration of Instruments and Apparatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-3 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34-4 Pressure . . . . . . . . . . . . . . . .

23、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-5 Flow Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-6 Time Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24、 . . . . . . . . . . . . . . . . . . . . . 44-7 Steam Loss Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44-8 Condensate Capacity Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74-9 Air

25、 and Noncondensible Gas Removal Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Section 5 Computation of Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165-1 Correction of Measured Variables . . . . . . . . . . . . . . . . . .

26、. . . . . . . . . . . . . . . . . . . . . . 165-2 Use of Formula Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165-3 Steam Loss Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Secti

27、on 6 Report of Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176-1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176-2 Detailed Information . . . . . . . . . . .

28、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17iiiSection 7 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Figures1Test Arrangement for Steam Loss Tests . . . . . . . . . . . . . . . . . . . .

29、 . . . . . . . . . . . . . . . . 52 Condensate Capacity Test Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Recommended Pressure Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84Air and Noncondensible Gas Handling Capabili

30、ty Test Arrangement . . . . . . . . . . . . 14Forms1 Data Log for Steam Loss Tests: No Loads or Condensate Load . . . . . . . . . . . . . . . . . 62 Data Log for Capacity Test: Accumulator Level Measurement . . . . . . . . . . . . . . . . . . 93 Calculation of Condensate Capacity . . . . . . . . . .

31、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 Data Log for Intermittent Flow Capacity Test: Weigh Tank Measurement . . . . . . . . . 115 Calculation of Condensate Capacity: Weigh Tank Measurement . . . . . . . . . . . . . . . . 126 Data Log for Intermittent Flow Capacity Test: Flowmet

32、er Measurement . . . . . . . . . . 137 Calculation of Condensate Capacity: Flowmeter Measurement . . . . . . . . . . . . . . . . . 148 Data Log for Air and Noncondensible Removal Test . . . . . . . . . . . . . . . . . . . . . . . . . 159 Steam Loss Test Calculations . . . . . . . . . . . . . . . . .

33、 . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Mandatory AppendixI Uncertainty Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Nonmandatory AppendixA Conversion Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34、 . . . . . . . . . . . . . . . . . . . . . . 30ivNOTICEAll Performance Test Codes must adhere to the requirements of ASME PTC 1, General In-structions. The following information is based on that document and is included here for em-phasis and for the convenience of the user of the Code. It is expect

35、ed that the Code user is fullycognizant of Sections 1 and 3 of ASME PTC 1 and has read them prior to applying this Code.ASME Performance Test Codes provide test procedures that yield results of the highest levelof accuracy consistent with the best engineering knowledge and practice currently availab

36、le. Theywere developed by balanced committees representing all concerned interests and specify proce-dures, instrumentation, equipment-operating requirements, calculation methods, and uncertaintyanalysis.When tests are run in accordance with a Code, the test results themselves, without adjustmentfor

37、 uncertainty, yield the best available indication of the actual performance of the tested equip-ment. ASME Performance Test Codes do not specify means to compare those results to contrac-tual guarantees. Therefore, it is recommended that the parties to a commercial test agree beforestarting the test

38、, and preferably before signing the contract, on the method to be used for com-paring the test results to the contractual guarantees. It is beyond the scope of any Code to de-termine or interpret how such comparisons shall be made.vFOREWORDThe Performance Test Codes Supervisory Committee, at its Jun

39、e 1974 Administrative meeting,authorized the formation of a Code Technical Committee to explore the possibility of writing atest code on condensate removal devices. This committee was organized January 15, 1975. At itsorganizational meeting, the committee proposed the writing of two codes, PTC 39.1

40、on Conden-sate Removal Devices for Steam Systems and PTC 39.2 on Condensate Removal Devices for AirSystems. This proposal was approved by the Performance Test Codes Supervisory Committee.The Code for Condensate Removal Devices for Steam Systems was approved by the Perfor-mance Test Codes Supervisory

41、 Committee on April 1, 1980. It was further approved as an Amer-ican National Standard by the ANSI Board of Standard Review on July 3, 1980.This committee has been operating as PTC 39 Steam Traps.The original document was a compromise which had three sets of existing test equipment tobe utilized. We

42、 therefore satisfied the consensus standard.The current document is generic and can fit other test platforms too.The original publication was submitted without an uncertainty analysis. Mr. David Fisher ofArmstrong Machine Works offered a magnificent theoretical treatise which is in our Appendix I.It

43、 is a privilege to acknowledge the efforts of those who are currently not on the committee:Thomas Alesson, Datron Systems Nicholson DivisionWarren Brand, YarwayThomas W. Carr, Jr., Spirax Sarco Inc.Robert Collins, Watson Daniel Co.Walter T. Deacon, Armstrong Machine WorksKeith Foley, Celanese Canada

44、, Inc.Robert W. Henry, Salt River Project Power Generation SystemsMilton Hilmer, SarcoDavid Kalix, Yarway Corp.William Mashburn, Virginia Polytechnic Institute and State University Mechanical EngineeringDepartmentElmer S. Monroe, DuPontJames W. Murdock, Mechanical Engineering of Drexel UniversityRic

45、hard G. Obst, Spence Engineering Co., Inc./Nicholson Steam TrapWilliam H. Schilling, Schilling Associates Inc.William F. Sisson, Armstrong Machine WorksHorst R. Thieme, Watson McDaniel Co.We are aware that the preferred SI unit for time is seconds. However, the overwhelming cus-tomary unit in our in

46、dustry is the capacity dimension of lb mass/hour. We have chosen to notinclude the rigorous usage but continue that which is common usage.ASME PTC 39-2005 was adopted by the American National Standards Institute as an Ameri-can National Standard on May 5, 2005.viPERFORMANCE TEST CODE COMMITTEE PTC 3

47、9ON STEAM TRAPS(The following is the roster of the Committee at the time of approval of this Code.)COMMITTEE OFFICERSE. F. Gregg, ChairM. A. Brookes, SecretaryCOMMITTEE PERSONNELS. M. Bisgrove, Spence Engineering Co., Inc.M. A. Brookes, The American Society of Mechanical EngineersE. F. Gregg, Consul

48、ting EngineerM. P. Hellman, Armstrong International Inc.D. W. Fischer, Alternate, Armstrong International Inc.W. E. Johnston, WEJ Energy Management Specialists, Inc.S. J. Korellis, Dynegy Midwest GenerationA. A. Kornhauser, Virginia TechviiBOARD ON PERFORMANCE TEST CODESOFFICERSJ. G. Yost, ChairJ. R

49、. Friedman, Vice ChairS. D. Weinman, SecretaryBOARD PERSONNELP. G. Albert, General Electric Co.R. P. Allen, ConsultantJ. M. Burns, Burns EngineeringW. C. Campbell, Southern Co. ServicesM. J. Dooley, Alstom PowerA. J. Egli, Alstom PowerJ. R. Friedman, Siemens Westinghouse Power Corp.G. J. Gerber, Praxair, Inc.P. M. Gerhart, University of EvansvilleT. C. Heil, ConsultantR. A. Johnson, Safe Harbor Water Power Corp.T. S. Jonas, Tenaska, Inc.D. R. Keyser, Information Network Systems, Inc.S. J. Korellis, Dynegy Midwest GenerationM. P. McHale, McHale however, theyshould not contain proprie