1、Designation:E3054/E3054M16Standard Guide forCharacterization and Use of Hygrothermal Models forMoisture Control Design in Building Envelopes1This standard is issued under the fixed designation E3054/E3054M;the number immediately following the designation indicates the yearof original adoption or,in
2、the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide offers guidance for the characterization anduse of hygrothermal models for moi
3、sture control design ofbuilding envelopes.In this context,“hygrothermal models”refers to the application of a mathematical model to thesolution of a specific heat and moisture flow performance issueor problem.Hygrothermal models are used to predict andevaluate design considerations for the short-ter
4、m and long-termthermal and moisture performance of building envelopes.1.2 Each hygrothermal model has specific capabilities andlimitations.Determining the most appropriate hygrothermalmodel for a particular application requires a thorough analysisof the problem at hand,understanding the required tra
5、nsportprocesses involved,and available resources to conduct theanalysis.Users of this guide can describe the functionality ofthe hygrothermal model used in an analysis in a consistentmanner.1.3 This guide applies to hygrothermal models that rangefrom complex research tools to simple design tools.Thi
6、s guideprovides a protocol for matching the analysis needs and thecapabilities of candidate models.1.4 This guide applies to the use of models that include allor part of the following thermal and moisture storage andtransport phenomena:(1)heat storage of dry and wet buildingmaterials,(2)heat transpo
7、rt by moisture-dependant thermalconduction,(3)phase change phenomena(for example,evapo-ration and condensation),(4)heat transport by air convection,(5)moisture retention by vapor adsorption and capillary forces,(6)moisture transport by vapor diffusion(molecular andeffusion),(7)moisture transport by
8、liquid transport(surfacediffusion and capillary flow),and(8)moisture(vapor)trans-port by air convection.1.5 This guide does not apply to cases requiring analysis ofthe following:(1)convection that occurs in a three-dimensional manner or through holes and cracks;(2)hydraulic,osmotic,or electrophoreti
9、c forces;(3)salt or other solutetransport;or(4)material properties that change with age.1.6 This guide intends to provide guidance regarding reli-ability of input and how the corresponding results can beaffected as well as a format for determining such information.1.7 UnitsThe values stated in eithe
10、r SI units or inch-pound units are to be regarded separately as standard.Thevalues stated in each system may not be exact equivalents;therefore,each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.1.8 This guide of
11、fers an organized characterization ofhygrothermal models and does not recommend a specificcourse of action.This document cannot replace education orexperience and should be used in conjunction with professionaljudgment.Not all aspects of this guide may be applicable in allcircumstances.This ASTM sta
12、ndard is not intended to repre-sent or replace the standard of care by which the adequacy ofa given professional service must be judged,nor should thisdocument be applied without consideration of a projects manyunique aspects.The word“Standard”in the title of thisdocument means only that the documen
13、t has been approvedthrough the ASTM International consensus process.1.9 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 appl
14、ica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C168 Terminology Relating to Thermal InsulationE283 Test Method for Determining Rate of Air LeakageThrough Exterior Windows,Curtain Walls,and DoorsUnder Specified Pressure Differences Across the Speci-men1Thi
15、s guide is under the jurisdiction of ASTM Committee E06 on Performanceof Buildings and is the direct responsibility of Subcommittee E06.41 on AirLeakage and Ventilation Performance.Current edition approved March 15,2016.Published May 2016.DOI:10.1520/E3054_E3054M-16.2For referenced ASTM standards,vi
16、sit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 E331 Test Method for Water Penetration of ExteriorWindows,Skylights,Doors,and Curtain Walls by Uni-form Static Air Pressure DifferenceE631 Terminology of Building ConstructionsE2273 Test Me
