NF EN ISO 8894-1

NF EN ISO 8894-1

August 2010
Standard Current

Refractory materials - Determination of thermal conductivity - Part 1 : hot-wire methods (cross-array and resistance thermometer)

This part of ISO 8894 describes the hot-wire methods (“cross-array” and “resistance thermometer”) for the determination of the thermal conductivity of non-carbonaceous, dielectric refractory products and materials.This methods are applicable to dense and insulating refractories (shaped products, refractory castables, plastic refractories, ramming mixes, powdered or granular materials) with thermal conductivity values less than 1,5 W/m×K (“cross-array”) and less than 15 W/m×K (“resistance thermometer”) and thermal diffusivity values less than 5 x 10-6 m2/s.

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Main informations

Collections

National standards and national normative documents

Publication date

August 2010

Number of pages

25 p.

Reference

NF EN ISO 8894-1

ICS Codes

81.080   Refractories

Classification index

B40-335-1

Print number

1 - 03/09/2010

International kinship

ISO 8894-1:2010

European kinship

EN ISO 8894-1:2010
Sumary
Refractory materials - Determination of thermal conductivity - Part 1 : hot-wire methods (cross-array and resistance thermometer)

This part of ISO 8894 describes the hot-wire methods (“cross-array” and “resistance thermometer”) for the determination of the thermal conductivity of non-carbonaceous, dielectric refractory products and materials.

This methods are applicable to dense and insulating refractories (shaped products, refractory castables, plastic refractories, ramming mixes, powdered or granular materials) with thermal conductivity values less than 1,5 W/m×K (“cross-array”) and less than 15 W/m×K (“resistance thermometer”) and thermal diffusivity values less than 5 x 10-6 m2/s.

Replaced standards (1)
NF EN 993-14
September 1998
Standard Cancelled
Methods of test for dense shaped refractory products. Part 14 : determination of thermal conductivity by the hot-wire (cross-array) method.

Le présent document définit une méthode de détermination de la conductivité des produits et matériaux réfractaires par la méthode du fil chaud (croisillon). Il s'applique aux produits denses et isolants, ainsi qu'aux matériaux pulvérulents ou granulaires, ceci pour des conductivités thermiques ne dépassant pas 1,5 W/mK. Les produits électriquement conducteurs sont exclus de la détermination.

Table of contents
  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Termes et définitions
    1
  • 3 Principe
    2
  • 4 Appareillage
    2
  • 5 Éprouvettes
    8
  • 6 Mode opératoire
    9
  • 7 Interprétation des résultats
    11
  • 8 Calculs et expression des résultats
    11
  • 9 Fidélité
    11
  • 10 Rapport d'essai
    12
  • Annexe A (informative) Conversion des données de variation de résistance en variation de température
    13
  • Annexe B (informative) Exemples de mesures de la conductivité thermique
    18
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