EN 13469:2001
(Main)Thermal insulating products for building equipment and industrial installations - Determination of water vapour transmission properties of preformed pipe insulation
Thermal insulating products for building equipment and industrial installations - Determination of water vapour transmission properties of preformed pipe insulation
This European Standard specifies the equipment and procedure for determining the water vapour transmission properties in the steady state under specified test conditions for test specime-ns of preformed pipe insulation. It is applicable to thermal insula-ting produc-ts.
It is intended to be used for homogeneous materials (see NOTE) and for products which may have integral skins or adhered facings of some different material.
NOTE A material is considered to be homogeneous in terms of mass distribu-tion if its density is approximatively the same throug-hout, i.e. if the measured density values are close to its mean density.
The water vapour transmission rate and permeance values are specific to the test specimen (i.e. the product) thickness tested. For homogeneous products, the water vapour permeability is a property of the material.
If the pipe insulation is cut from a flat product, then the water vapour transmission properties can be obtained from tests carried out on the flat product with similar properties in accordance with EN 12086.
Wärmedämmstoffe für die Haustechnik und für betriebstechnische Anlagen - Bestimmung der Wasserdampfdurchlässigkeit von vorgeformten Rohrdämmstoffen
Anwendungsbereich
Diese Europäische Norm legt Prüfeinrichtungen und Verfahren zur Bestimmung der Wasserdampfdurchlässig-keits-Eigenschaften von Probekörpern aus vorgeformten Rohrdämmstoffen im stationären Zustand unter definierten Prüfbedingungen fest. Sie gilt für Wärmedämmstoffe.
Die Norm ist anwendbar bei homogenen Dämmstoffen (siehe ANMERKUNG) und bei Produkten, die als festen Bestandteil bestimmte Oberflächenschichten oder Kaschierungen aus anderen Werkstoffen enthalten können.
ANMERKUNG Ein Dämmstoff wird als homogen hinsichtlich seiner Massenverteilung angesehen, wenn seine Dichte überall etwa gleich ist, das heißt, wenn die gemessenen Werte nahe beim Mittelwert seiner Rohdichte liegen.
Die Wasserdampf-Diffusionsstromdichte und der Wasserdampf-Diffusionsdurchlasskoeffizient sind abhängig von der Dicke des geprüften Probekörpers, also des Produkts. Für homogene Produkte ist der Wasserdampf-Diffusions-leitkoeffizient eine Stoffeigenschaft.
Ist die Rohrschale aus einem ebenen Produkt herausgeschnitten worden, können die Wasserdampfdurchlässigkeits-Eigenschaften aus Prüfungen bestimmt werden, die nach EN 12086 an dem ebenen Produkt mit ähnlichen Eigen-schaften durchgeführt werden.
Produits isolants thermiques pour l'équipement du bâtiment et les installations industrielles - Détermination des propriétés de transmission de la vapeur d'eau des coquilles isolantes préformées
La présente Norme européenne spécifie les équipements nécessaires et les procédures à suivre pour déterminer, en régime permanent et dans des conditions d'essai spécifiques, les propriétés de transmission de la vapeur d'eau d'éprouvettes constituées de coquilles isolantes préformées. Elle s'applique aux produits isolants thermiques.
Elle est destinée aux matériaux homogènes (voir NOTE) et aux produits qui pourraient posséder des revêtements intégrés ou des parements collés faits d'un autre matériau.
NOTE Un matériau est estimé homogène quant à sa distribution massique si sa densité est à peu près la même partout, c'est-à-dire si les valeurs mesurées de la densité sont proches de sa densité moyenne.
Le taux de transmission de la vapeur d'eau et le degré de perméance dépendent de l'épaisseur de l'éprouvette (c'est-à-dire du produit) testée. Dans le cas des produits homogènes, la perméabilité à la vapeur d'eau est une propriété du matériau.
Si la coquille isolante est découpée dans un produit plat, les propriétés de transmission de la vapeur d'eau peuvent être déterminées à partir d'essais effectués selon EN 12086 sur le produit plat possédant des propriétés semblables.
Toplotnoizolacijski proizvodi za opremo stavb in industrijske inštalacije – Ugotavljanje lastnosti prenosa vodne pare predoblikovanih cevnih izolacij
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Toplotnoizolacijski proizvodi za opremo stavb in industrijske inštalacije – Ugotavljanje lastnosti prenosa vodne pare predoblikovanih cevnih izolacijWärmedämmstoffe für die Haustechnik und für betriebstechnische Anlagen - Bestimmung der Wasserdampfdurchlässigkeit von vorgeformten RohrdämmstoffenProduits isolants thermiques pour l'équipement du bâtiment et les installations industrielles - Détermination des propriétés de transmission de la vapeur d'eau des coquilles isolantes préforméesThermal insulating products for building equipment and industrial installations - Determination of water vapour transmission properties of preformed pipe insulation91.100.60Thermal and sound insulating materialsICS:Ta slovenski standard je istoveten z:EN 13469:2001SIST EN 13469:2002en01-marec-2002SIST EN 13469:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13469September 2001ICS 91.100.60English versionThermal insulating products for building equipment and industrialinstallations - Determination of water vapour transmissionproperties of preformed pipe insulationProduits isolants thermiques pour l'équipement du bâtimentet les installations industrielles - Détermination despropriétés de transmission de la vapeur d'eau des coquillesisolantes préforméesWärmedämmstoffe für die Haustechnik und fürbetriebstechnische Anlagen - Bestimmung derWasserdampfdurchlässigkeit von vorgeformtenRohrdämmstoffenThis European Standard was approved by CEN on 18 August 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13469:2001 ESIST EN 13469:2002
Scope.42
Normative references.43
Terms and definitions.44
Principle.55
Apparatus.56
Test specimens.57
Procedure.68
Calculation and expression of results.79
Accuracy of measurement.1210
Test report.12Annex A (informative)
Correction for air pressure variations during test.13SIST EN 13469:2002
ScopeThis European Standard specifies the equipment and procedure for determining the water vapourtransmission properties in the steady state under specified test conditions for test specimens ofpreformed pipe insulation. It is applicable to thermal insulating products.It is intended to be used for homogeneous materials (see NOTE) and for products which may haveintegral skins or adhered facings of some different material.NOTE
A material is considered to be homogeneous in terms of mass distribution if its density is approximatively thesame throughout, i.e. if the measured density values are close to its mean density.The water vapour transmission rate and permeance values are specific to the test specimen (i.e. theproduct) thickness tested. For homogeneous products, the water vapour permeability is a property of thematerial.If the pipe insulation is cut from a flat product, then the water vapour transmission properties can beobtained from tests carried out on the flat product with similar properties in accordance with EN 12086.2
Normative referencesThis European Standard incorporates, by dated or undated reference, provisions from other publications.These normative references are cited at the appropriate places in the text, and the publications are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this European Standard only when incorporated in it by amendment or revision. For undatedreferences the latest edition of the publication referred to applies (including amendments).EN 12085, Thermal insulating products for building applications - Determination of linear dimensions oftest specimens.EN 12086, Thermal insulating products for building applications - Determination of water vapourtransmission properties.EN 13467, Thermal insulating products for building equipment and industrial installations - Determinationof dimensions, squareness and linearity of preformed pipe insulation.3
Terms and definitionsFor the purpose of this European Standard, the following terms and definitions apply.3.1water vapour flow rate, Gthe quantity of water vapour transmitted through the surface of the test specimen in unit time3.2water vapour transmission rate, gthe quantity of water vapour transmitted through unit area in unit time under specified conditions oftemperature, humidity and thickness3.3water vapour permeance, Wthe quotient of water vapour transmission rate of the test specimen and the water vapour pressuredifference between the test specimen faces during the test3.4water vapour resistance, Zthe inverse of water vapour permeance (1/W)SIST EN 13469:2002
d). The water vapourpermeability of a homogeneous product is a property of the material. It is the quantity of water vapourtransmitted per unit of time through a unit area of the product per unit of vapour pressure differencebetween its faces for a unit thickness3.6water vapour diffusion resistance factor, the quotient of the water vapour permeability of air and the water vapour permeability of the material orthe homogeneous product concerned. It indicates the relative magnitude of the water vapour resistanceof the product and that of an equally thick layer of stationary air at the same temperature4
PrincipleA desiccant filled "dry-cup" made from a preformed pipe insulatiom test specimen is placed in a testatmos-phere whose temperature and humidity are controlled. Because of the difference between thepartial water vapour pressures in the test assembly and in the test atmosphere water vapour flowsthrough the test specimen. Periodic weighings of the assembly are made to determine the rate of watervapour transmission when the steady state is reached.For products with a low water vapour transmission rate, special consideration has to be taken intoaccount (see annex A).5
Apparatus5.1
Chamber, capable of being maintained within a temperature of (23 ± 1) C and a relative humidity(50 ± 3) %.NOTE
In order to maintain the required conditions throughout the chamber, it may be necessary to use aircirculation with an air speed between 0,02 m/s to 0,3 m/s.5.2
Desiccant, anhydrous calcium chloride (CaCl2) with particle size 2 mm to 15 mm (relative humidity0 %) or any other desiccant that gives the same results.5.3 Analytical balance, capable of weighing the test assembly to an accuracy of ± 1 mg or better. Iflarger test assemblies are
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