ASTM_C_1033_-_85_2000.pdf

Designation:C 1033 85(Reapproved 2000)Standard Test Method forSteady-State Heat Transfer Properties of Pipe InsulationInstalled Vertically1This standard is issued under the fixed designation C 1033;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the measurement of the steady-state heat transfer properties of pipe insulations for pipesoperating at temperatures above the ambient environment fromapproximately 40C to the maximum insulation design tem-perature.Specimens may be rigid,flexible,or loose-fill,may behomogeneous or nonhomogeneous,isotropic or nonisotropic,and of circular or noncircular cross section.Measurement ofmetallic reflective insulations is included in this test method;however,additional precautions must be taken when thesematerials are being evaluated.1.2 When appropriate,or as required by specifications orother test methods,the following thermal transfer propertiesfor the specimen can be calculated from the measured data(see3.2):1.2.1 The thermal resistance and conductance,1.2.2 The thermal transference,1.2.3 The surface resistance and heat transfer coefficient,and1.2.4 The apparent thermal resistivity and conductivity.1.3 This test method applies only for testing of insulationson vertical pipes,and the results will only apply for insulationsinstalled vertically(see Note 1).1.4 The test pipe may be of any size or shape provided thatit matches the specimens to be tested.Normally the test methodis used with circular pipes,however,its use is permitted withpipes or ducts of noncircular cross section(square,rectangular,hexagonal,etc.).One common size used for interlaboratorycomparison is a pipe with an 88.9-mm outside diameter(standard nominal 80-mm,3-in.pipe size).1.5 This test method covers only the guarded-end type ofpipe apparatus.No experience has been gathered with thecalibrated or calculated-end pipe apparatus;therefore,this typeof tester is not included as part of this specification.1.6 The values stated in SI units are to be regarded as thestandard.Conversion factors to other units are given in Table 1.The units used must accompany all numerical values.NOTE1Measurement of insulations installed horizontally is coveredin Test Method C 335 and Test Method C 691.NOTE2Discussions of the appropriateness of these properties toparticular specimens or materials may be found in Test Method C 177,TestMethod C 518,and in the literature.21.7 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:C 168 Terminology Relating to Thermal Insulating Materi-als3C 177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate Apparatus3C 302 Test Method for Density and Dimensions of Pre-formed Pipe-Covering-Type Thermal Insulation3C 335 Test Method for Steady-State Heat Transfer Proper-ties of Horizontal Pipe Insulations3C 518 Test Method for Steady-State Heat Thermal Trans-mission Properties by Means of the Heat Flow MeterApparatus3C 680 Practice for Determination of Heat Gain or Loss andthe Surface Temperatures of Insulated Pipe and EquipmentSystems by the Use of a Computer Program3C 691 Test Method for Steady-State Thermal TransmissionProperties of Nonhomogeneous Pipe Insulation InstalledHorizontally4C 870 Practice for Conditioning of Thermal Insulating Ma-terials3E 230 Temperature Electromotive Force(EMF)Tables forStandardized Thermocouples53.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminology C 168.3.2 Definitions of Terms Specific to This Standard:1This test method is under the jurisdiction ofASTM Committee C16 on ThermalInsulation and is the direct responsibility of Subcommittee C16.30 on ThermalMeasurement.Current edition approved Jan.25,1985.Published April 1985.2ASTM Subcommittee C16.30,“What Property Do We Measure,”Heat Trans-mission Measurements in Thermal Insulations,ASTM STP 544,ASTM,1974,pp.512.3Annual Book of ASTM Standards,Vol 04.06.4DiscontinuedSee 1986 Annual Book of ASTM Standards,Vol 04.06.5Annual Book of ASTM Standards,Vol 14.03.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.NOTICE:This standard has either been superceded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.3.2.1 pipe insulation thermal conductance,Cthe steady-state time rate of heat flow per unit pipe area divided by thedifference between the average pipe surface temperature andthe ave