SIST EN ISO 13787:2003
(Main)Thermal insulation products for building equipment and industrial installations - Determination of declared thermal conductivity (ISO 13787:2003)
Thermal insulation products for building equipment and industrial installations - Determination of declared thermal conductivity (ISO 13787:2003)
ISO 13787:2003 establishes a procedure for the determination and verification of declared thermal conductivity, as a function of temperature, of thermal insulating materials and products used for the insulation of building equipment and industrial installations.
Informative annex B gives an optional method for establishing the thermal conductivity curve or table from measured values.
ISO 13787:2003 is not applicable to thermal insulating products used in building envelopes. For the procedures which are used for these products, see ISO 10456, "Building materials and products - Procedures for determining declared and design thermal values".
Wärmedämmstoffe für die Haustechnik und für betriebstechnische Anlagen - Bestimmung des Nennwertes der Wa¨rmeleitfähigkeit (ISO 13787:2003)
Diese Norm legt die Verfahren zur Bestimmung der Nennwerte der Wärmeleitfähigkeit von Wärmedämmstoffen und -produkten für Dämmzwecke in der Haustechnik und in betriebstechnischen Anlagen fest; der von dieser Norm abgedeckte Bereich erfaßt Temperaturen von - 200 °C bis + 1000 °c. Es wird ein Verfahren festgelegt, um aus den gemessenen Wärmeleitfähigkeitswerten im Anwendungstemperaturbereich des Produkts die Nennwerte zu ermitteln. Die Norm gilt nicht für Wärmedämmstoffe, die in Gebäude-Außenbauteilen eingesetzt werden. Wegen der Vorgehensweise bei diesen Produkten wird auf prEN ISO 10456 verwiesen.
Produits isolants thermiques pour l'équipement du bâtiment et les installations industrielles - Détermination de la conductivité thermique déclarée (ISO 13787:2003)
L'ISO 13787:2003 établit la méthode permettant de déterminer et de vérifier la conductivité thermique déclarée en fonction de la température des matériaux et produits isolants thermiques utilisés pour l'isolation d'équipement de bâtiment et des installations industrielles.
L'Annexe informative B spécifie également une méthode facultative permettant d'établir la courbe ou le tableau de conductivité thermique à partir des valeurs mesurées.
La présente Norme ne s'applique pas aux produits isolants thermiques utilisés dans les enveloppes du bâtiment. Pour les méthodes utilisées pour ces produits, voir l'ISO 10456 #8220;Isolation thermique - Matériaux et produits pour le bâtiment - Détermination des valeurs thermiques déclarées et utiles#8221;.
Toplotnoizolacijski proizvodi za opremo stavb in industrijske napeljave – Ugotavljanje nazivne toplotne prevodnosti
General Information
Overview
EN ISO 13787:2003 (CEN) - Thermal insulation products for building equipment and industrial installations - defines the procedure for the determination and verification of the declared thermal conductivity of thermal insulating materials and products as a function of temperature. It specifies how manufacturers must present thermal conductivity values (curve or table), how measurements are made and verified, and includes informative annexes (A, B, C) with alternative comparison and statistical methods.
Key topics and technical requirements
- Declared thermal conductivity curve or table: Manufacturer provides a proposed curve or table showing thermal conductivity versus mean temperature, conditioned at standard atmosphere (23 °C, 50% RH).
- Measurement methods: Measurements performed in accordance with ISO 8301, ISO 8302 or EN 12667 for flat specimens, and EN ISO 8497 for cylindrical specimens.
- Temperature measurement rules:
- Measurements at a minimum of three mean temperatures.
- For mean temperatures up to 500 °C, measurements at intervals no greater than 100 K; for >500 °C, intervals up to 200 K.
- No extrapolation beyond measured range; round results to 0.001 W/(m·K).
- Test specimen conditioning: Specimens shall be aged where necessary or an ageing correction applied.
- Temperature difference: For flat specimens, hot–cold face difference 10 K to 40 K (choose for best accuracy); for cylindrical, at least 10 K.
- Verification procedure (summary):
- Select three random samples; measure first specimen and compare to proposed curve.
- If measured values ≤ proposed values → pass.
- If any measured value ≥ proposed value by ≥10% → fail.
- If intermediate exceedances (<10%), measure two more specimens (one from each remaining sample), convert/average results and re-evaluate per standard rules.
- Informative annexes:
- Annex A: curve-comparison alternative;
- Annex B: optional statistical method to establish declared curve from many measurements;
- Annex C: illustrative procedures and flow chart.
Applications and users
- Practical for manufacturers of thermal insulation for building services (HVAC, piping, ductwork) and industrial installations where thermal conductivity varies with temperature.
- Used by product certification bodies, test laboratories, quality managers, specifiers and consultants who need to declare, verify or validate thermal performance data.
- Helps ensure consistent, auditable declared values for thermal design, energy modeling and compliance with procurement or certification schemes.
Related standards
- Not applicable to building envelope products - see ISO 10456 for those procedures.
- Measurement standards referenced: ISO 8301, ISO 8302, EN 12667, EN ISO 8497.
Keywords: EN ISO 13787:2003, declared thermal conductivity, thermal insulation, measurement, verification, building equipment, industrial installations, thermal conductivity curve.
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2003
Toplotnoizolacijski proizvodi za opremo stavb in industrijske napeljave –
Ugotavljanje nazivne toplotne prevodnosti
Thermal insulation products for building equipment and industrial installations -
Determination of declared thermal conductivity (ISO 13787:2003)
Wärmedämmstoffe für die Haustechnik und für betriebstechnische Anlagen -
Bestimmung des Nennwertes der Wa¨rmeleitfähigkeit (ISO 13787:2003)
Produits isolants thermiques pour l'équipement du bâtiment et les installations
industrielles - Détermination de la conductivité thermique déclarée (ISO 13787:2003)
Ta slovenski standard je istoveten z: EN ISO 13787:2003
ICS:
91.100.60 0DWHULDOL]DWRSORWQRLQ Thermal and sound insulating
]YRþQRL]RODFLMR materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 13787
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2003
ICS 91.100.60
English version
Thermal insulation products for building equipment and industrial
installations - Determination of declared thermal conductivity
(ISO 13787:2003)
Produits isolants thermiques pour l'équipement du bâtiment Wärmedämmstoffe für die Haustechnik und für
et les installations industrielles - Détermination de la betriebstechnische Anlagen - Bestimmung des Nennwertes
conductivité thermique déclarée (ISO 13787:2003) der Wa¨rmeleitfähigkeit (ISO 13787:2003)
This European Standard was approved by CEN on 9 October 2002.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards 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 translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13787:2003 E
worldwide for CEN national Members.
Contents
page
Foreword.3
Introduction .4
1 Scope .4
2 Normative references.4
3 Terms and definitions .5
4 Principles for the determination of declared thermal conductivity.5
5 Determination and verification of declared thermal conductivity.6
5.1 Measurement of thermal conductivity .6
5.2 Procedure for verification .6
Annex A (informative) Verification based on curve comparison.9
A.1 General.9
A.2 Principle .9
A.3 Test.9
A.3.1 Measurement of thermal conductivity .9
A.3.2 Procedure for comparison and decision .9
Annex B (informative) Statistical method to establish the declared thermal conductivity curve.11
B.1 General .11
B.2 Symbols and units .11
B.3 Establishment of declared values .12
B.3.1 A large number of thermal conductivity results are available (n > 50 at each temperature) .12
B.3.2 A small number of data are available (n £ 50) .12
B.4 Verification of the declared curve .12
B.5 Examples.13
B.5.1 Establishment of the declared curve.13
B.5.2 Verification of the declared curve.15
Annex C (informative) Illustration of the procedure to verify thermal conductivity.19
Bibliography .22
Foreword
This document (EN ISO 13787:2003) has been prepared by Technical Committee CEN/TC 89 "Thermal
performance of buildings and building components", the secretariat of which is held by SIS, in collaboration with
Technical Committee ISO/TC 163 "Thermal performance and energy use in the built environment".
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by September 2003, and conflicting national standards shall be withdrawn at the
latest by September 2003.
Annexes A, B and C are informative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
Introduction
This standard gives the procedure for the determination of the declared thermal conductivity of thermal insulation
materials and products, which are used for the insulation of building equipment and industrial installations.
For this area of application the thermal conductivity values are usually expressed over a wide range of
temperatures.
This standard describes the procedure necessary for the determination of the thermal conductivity values, which
the manufacturer shall declare.
The values are expressed in the form of a curve or in tabular form which shows thermal conductivity as a function
of temperature.
1 Scope
This standard establishes the procedure for the determination and verification of the declared thermal conductivity
as a function of temperature of thermal insulating materials and products used for the insulation of building
equipment and industrial installations.
The informative annex B also gives an optional method for establishing the thermal conductivity curve or table from
measured values.
The standard is not applicable to thermal insulating products used in building envelopes. For the procedures which
are used for these products, see ISO 10456, “Building materials and products – Procedures for determining
declared and design thermal values”.
2 Normative references
This 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 listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 12667 Thermal performance of building materials and products - Determination of
thermal resistance by means of guarded hot plate and heat flow meter
methods - Products of high and medium thermal resistance.
EN ISO 7345:1995 Thermal insulation - Physical quantities and definitions (ISO 7345:1987).
EN ISO 8497 Thermal insulation - Determination of steady-state thermal transmission
properties of thermal insulation for circular pipes (ISO 8497:1994).
prEN ISO 9229:1997 Thermal insulation - Definitions of terms (ISO/DIS 9229:1997).
Thermal insulation - Determination of steady-state thermal resistance and
ISO 8301
related properties - Heat flow meter apparatus.
ISO 8302 Thermal insulation - Determination of steady-state thermal resistance and
related properties - Guarded hot plate apparatus.
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN ISO 7345:1995, prEN ISO
9229:1997 and the following apply.
3.1
reference mean temperature
mean temperature selected for use as the basis for physical property measurement and expression of data for
those materials where physical properties change with temperature
3.2
declared value
value declared by a manufacturer which is derived from measured values under specified conditions and rules
3.3
declared thermal value
expected value of a thermal property of a building material or product
— assessed from measured data at reference conditions of temperature and humidity;
— given for a stated fraction and confidence level according to the determination method in this standard;
— corresponding to a reasonable expected service lifetime under normal conditions.
NOTE The declared thermal value includes the effects of ageing and dispersion in the measured values.
3.4
declared thermal conductivity curve
curve giving the thermal conductivity at different temperatures for a material or product conditioned in equilibrium
with a standard atmosphere (23 °C, 50 % relative humidity) based on the declared thermal values
4 Principles for the determination of declared thermal conductivity
The manufacturer shall present his proposed declared thermal conductivity of the material or product in the form of
a curve as a function of the mean temperature or a table with a number of values in accordance with 5.1.
The product shall then be subjected to a test according to clause 5, with test specimens representative of the
product.
If the test is passed, the proposed declared thermal conductivity curve or table becomes the declared thermal
conductivity curve or table.
NOTE 1 An alternative procedure to the one given in the standard is given in annex A.
NOTE 2 An optional statistical method to establish the declared thermal conductivity curve is given in annex B.
5 Determination and verification of declared thermal conductivity
5.1 Measurement of thermal conductivity
The test specimens shall be aged, if necessary, before measurements are made. As an alternative, a correction
factor for ageing shall be applied.
NOTE Ageing procedures are found in product specifications, where relevant.
Measurements shall be carried out in accordance with ISO 8301, ISO 8302 or EN 12667 for flat test specimens and
EN ISO 8497 for cylindrical test specimens.
The temperature difference between the hot and cold faces shall range from 10 K to 40 K for flat test specimens.
The temperature difference shall be chosen to maximize the accuracy of the measurement. For cylindrical
specimens, tested in accordance with EN ISO 8497, these requirements on temperature difference do not apply,
but the temperature difference shall not be smaller than 10 K.
Measurements shall be made at three different mean temperatures at least.
For mean temperatures up to 500 °C, the curve determined in the test shall be based upon measurements at
intervals of a maximum of 100 K, over the whole service temperature range stated by the manufacturer.
Thermal conductivity shall also be measured at temperatures close to inflexion points or other irregularities of the
curve.
For mean temperatures greater than 500 °C, the curve determined in the test shall be based upon measurements
at intervals of a maximum of 200 K.
No extrapolation of test results beyond the measured temperature range is permitted. The measured thermal
conductivities shall be rounded up to the nearest 0,001 W/(m⋅K).
The results shall be expressed either by a temperature/thermal conductivity curve or by a table. The comparison
with the proposed curve or table is only made at the temperatures of measurement.
5.2 Procedure for verification
Select three different samples. Take the test specimens from these samples at random, as required.
Measure the thermal conductivity of the test specimen from the first sample in accordance with the method
described in 5.1.
Compare the results of the measurements with the values obtained from the proposed curve or table.
— If the measured values are all less than or equal to the thermal conductivities derived from the proposed curve
or table, the test is passed and the proposed curve or table becomes the declared curve or table.
— If one or more of the measured values exceeds the corresponding thermal conductivity of the proposed curve or
table by 10 % or more, the test has failed.
— If there are measured values above the values on the proposed curve or in the table but none of them exceeds
the corresponding thermal conductivity by 10 %, then two new test specimens shall be measured in accordance
with the method described in 5.1, one specimen being taken from each of the two remaining samples.
For temperatures £ below 100 °C, measure the thermal conductivities of the second and third specimen at
temperatures within ± 5 K of the values measured for the first specimen. Increase this to ± 10 K for temperatures
above 100 °C.
If none of the new measurements exceeds the proposed curve or table by 10 % or more, the measured thermal
conductivities shall be converted to the temperatures at which the measurements for the first curve were made,
using the slope of the first curve to make the conversion.
Results of the measurements above the proposed curve or the value in the table by 10% or more shall constitute a
failure of the test.
Calculate the values of thermal conductivity at the corresponding temperatures by calculating the mean of the three
values measured or converted at each temperature.
— If all these new mean values are lower than or equal to the corresponding thermal conductivities of the
proposed declared curve, the test has passed, in which event the proposed declared curve or table becomes
the declared curve or table.
—
If one or more of the new mean values is higher than the corresponding thermal conductivity of the proposed
declared curve or table, the test has failed.
The verification procedure is described in the flow chart in Figure 1 and illustrated in annex C.
Figure 1 - Flow chart for verifying the thermal conductivity
EN ISO
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Frequently Asked Questions
SIST EN ISO 13787:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Thermal insulation products for building equipment and industrial installations - Determination of declared thermal conductivity (ISO 13787:2003)". This standard covers: ISO 13787:2003 establishes a procedure for the determination and verification of declared thermal conductivity, as a function of temperature, of thermal insulating materials and products used for the insulation of building equipment and industrial installations. Informative annex B gives an optional method for establishing the thermal conductivity curve or table from measured values. ISO 13787:2003 is not applicable to thermal insulating products used in building envelopes. For the procedures which are used for these products, see ISO 10456, "Building materials and products - Procedures for determining declared and design thermal values".
ISO 13787:2003 establishes a procedure for the determination and verification of declared thermal conductivity, as a function of temperature, of thermal insulating materials and products used for the insulation of building equipment and industrial installations. Informative annex B gives an optional method for establishing the thermal conductivity curve or table from measured values. ISO 13787:2003 is not applicable to thermal insulating products used in building envelopes. For the procedures which are used for these products, see ISO 10456, "Building materials and products - Procedures for determining declared and design thermal values".
SIST EN ISO 13787:2003 is classified under the following ICS (International Classification for Standards) categories: 91.100.60 - Thermal and sound insulating materials. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 13787:2003 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase SIST EN ISO 13787:2003 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
La norme SIST EN ISO 13787:2003 se concentre sur une approche systématique pour la détermination et la vérification de la conductivité thermique déclarée des matériaux isolants thermiques, spécifiquement adaptés pour les équipements de bâtiment et les installations industrielles. Ce cadre normatif établit des procédures rigoureuses qui permettent d'évaluer et de certifier la performance thermique des produits d'isolation, tout en tenant compte des variations de température. Parmi les forces de cette norme, on note son caractère exhaustif qui inclut une méthodologie bien définie pour la mesure de la conductivité thermique. L'annexe informative B, qui propose une méthode optionnelle pour établir la courbe ou le tableau de conductivité thermique à partir des valeurs mesurées, renforce son utilité pour les professionnels du secteur. Cette annexe offre une flexibilité appréciable et permet d’intégrer des données empiriques dans le processus d’évaluation, tout en garantissant des résultats fiables. La pertinence de la norme ISO 13787:2003 est également reconnue dans le cadre des exigences réglementaires liées à la performance énergétique des bâtiments. Bien que cette norme ne soit pas applicable aux produits isolants utilisés dans les enveloppes des bâtiments, elle joue un rôle essentiel dans la catégorie des équipements et installations industrielles, où la précision de la conductivité thermique est primordiale pour une isolation efficace et conforme aux normes de durabilité. En résumé, la norme SIST EN ISO 13787:2003 se révèle être un outil précieux pour les professionnels de l'isolation, offrant un cadre de travail fiable pour garantir la qualité et l'efficacité thermique des produits d'isolation utilisés dans les environnements industriels.
SIST EN ISO 13787:2003 표준은 건축 장비 및 산업 설비에 사용되는 열 절연 재료 및 제품의 선언된 열 전도율을 온도에 따라 결정하고 검증하는 절차를 규정하고 있습니다. 이 표준은 열 절연 제품의 성능을 정확하게 평가할 수 있는 기초를 제공함으로써 품질 보증 및 신뢰성을 높이는 데 기여합니다. 이 표준의 강점 중 하나는 정보 부록 B에서 측정된 값으로부터 열 전도율 곡선 또는 표를 설정하는 옵션 방법을 제공한다는 점입니다. 이는 사용자가 다양한 조건에서 재료의 열 전도성을 보다 쉽게 이해하고 비교할 수 있도록 도와줍니다. 또한, SIST EN ISO 13787:2003은 온도 변동에 따른 열 전도율을 고려하여 결과를 보다 정밀하게 반영할 수 있습니다. 단, 이 표준은 건축 외피에 사용되는 열 절연 제품에는 적용되지 않으며, 이러한 제품에 대한 절차는 ISO 10456에 명시되어 있습니다. 이는 사용자가 특정 재료에 대한 올바른 표준을 선택하는 데 유용한 정보를 제공합니다. 전반적으로 SIST EN ISO 13787:2003은 건축 장비 및 산업 설비의 열 절연 성능 개선에 매우 중요한 역할을 하며, 관련 산업에서의 적용성과 중요성을 지니고 있습니다.
Die SIST EN ISO 13787:2003 ist ein entscheidendes Dokument, das sich mit der Wärmeisolierung von Produkten für die Ausrüstung von Gebäuden und industriellen Anlagen befasst. Diese Norm legt ein Verfahren zur Bestimmung und Überprüfung der deklarierten Wärmeleitfähigkeit von thermischen Isoliermaterialien fest, wobei die Temperatur als entscheidender Faktor berücksichtigt wird. Eine der Stärken dieser Norm ist die umfassende Beschreibung des Verfahrens, durch welches eine zuverlässige Messung der Wärmeleitfähigkeit erreicht werden kann. Dies ist besonders wichtig, da die präzise Ermittlung der Wärmeleitfähigkeit Maßstäbe für die Energieeffizienz in der Bauindustrie setzt und somit zur Optimierung des Energieverbrauchs beiträgt. Ein weiterer positiver Aspekt ist der informative Anhang B, der eine optionale Methode zur Erstellung einer Wärmeleitfähigkeitskurve oder -tabelle aus gemessenen Werten bietet. Diese Flexibilität ermöglicht eine Anpassung an spezifische Anforderungen oder Bedingungen und fördert somit eine genauere Anwendung der Norm. Es ist wichtig zu beachten, dass die ISO 13787:2003 nicht für Produkte verwendet wird, die in Gebäudehüllen eingesetzt werden. Für diese speziellen Anwendungen verweist die Norm auf ISO 10456, was die Klarheit und Spezialisierung der Norm unterstreicht und sicherstellt, dass Anwender die am besten geeigneten Verfahren für unterschiedliches Isoliermaterial auswählen können. Insgesamt stellt die SIST EN ISO 13787:2003 eine grundlegende Ressource dar, die nicht nur zur Bestimmung der deklarierten Wärmeleitfähigkeit beiträgt, sondern auch die Relevanz von thermischen Isoliermaterialien im Kontext des modernen Bauwesens hervorhebt. Die Norm ist entsprechend strukturiert, um den Fachleuten in der Branche eine klare Orientierung zu bieten.
SIST EN ISO 13787:2003は、建物設備および産業設備の断熱材の宣言された熱伝導率の測定および検証手順を確立する重要な標準です。この標準は、温度を考慮した熱絶縁材料および製品に焦点を当てており、建築物のエネルギー効率を確保するために重要な役割を果たします。 この標準の強みは、熱伝導率の測定における明確な手法を提供し、さまざまな温度条件下での材料の性能を正確に把握できる点にあります。特に、付属書Bに記載されたオプションの方法では、測定値から熱伝導率の曲線または表を確立することができ、実際の使用条件に即した詳細なデータを得ることが可能です。 ISO 13787:2003は、建物の外皮に使用される断熱製品には適用されないため、それらの製品に対応する手順については別の標準であるISO 10456が参照されています。このことにより、適切な基準に基づいた正確な熱価値の測定が保証されるため、建物の設計やエネルギー効率に対する信頼性を高めることができます。 全体として、SIST EN ISO 13787:2003は、建物設備および産業設置の断熱材に関する重要な規範を提供し、業界における実務の標準化を促進するための強力なツールとなっています。この標準を遵守することで、企業は断熱性能の信頼性を高め、エネルギーコスト削減にも貢献できるでしょう。
The SIST EN ISO 13787:2003 standard offers a comprehensive framework for evaluating the declared thermal conductivity of thermal insulation products specifically designed for building equipment and industrial installations. This standard is pivotal in establishing a consistent approach for assessing thermal performance parameters under varying temperature conditions. One of the key strengths of ISO 13787:2003 is its detailed methodology for determining and verifying thermal conductivity, which is crucial for manufacturers and users alike. The inclusion of informative annex B presents an optional method for constructing a thermal conductivity curve or table from measured data, enhancing the utility of this standard for practical applications. This flexibility allows users to adopt a more tailored approach to thermal performance measurement, fostering accuracy in product documentation and compliance. Moreover, the standard emphasizes the importance of distinguishing between thermal insulating products for equipment and those intended for building envelopes, directing users to relevant standards such as ISO 10456 for the latter. This clarity in scope ensures that stakeholders are directed to appropriate methodologies, minimizing confusion and promoting adherence to best practices within the industry. SIST EN ISO 13787:2003's relevance in the context of sustainable building and energy efficiency cannot be overstated. By providing a clear set of procedures for determining thermal conductivity, this standard supports the reduction of energy consumption in buildings, aligning with global efforts to enhance environmental performance through effective thermal insulation strategies. Thus, the standard plays a key role in the broader context of energy-efficient building practices, reinforcing its necessity in today's construction and industrial sectors.
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