ISO 23766:2022

Thermal insulating products for industrial installations — Determination of the coefficient of linear thermal expansion at sub-ambient temperatures

This document specifies the equipment and procedures for determining the coefficient of linear thermal expansion at sub-ambient temperatures (−196 °C to 25 °C), subject to the possible temperature limitation of the test specimens. It is not applicable to products which experience dimensional changes during the test due to the loss of hydration water or which undergo other phase changes.

Produits isolants thermiques pour les installations industrielles — Détermination du coefficient de dilatation thermique linéique à des températures inférieures à la température ambiante

Produits isolants thermiques pour les installations industrielles — Détermination du coefficient de dilatation thermique linéique à des températures inférieures à la température ambiante

General Information

• Status: Published
• Publication Date: 13-Mar-2022
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: ISO/TC 163/SC 1 - Test and measurement methods
• Drafting Committee: ISO/TC 163/SC 1/WG 20 - Test methods at cryogenic temperature
• Current Stage: 6060 - International Standard published
• Start Date: 14-Mar-2022
• Due Date: 24-Jan-2022
• Completion Date: 14-Mar-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 23766
First edition
2022-03
Thermal insulating products
for industrial installations —
Determination of the coefficient of
linear thermal expansion at sub-
ambient temperatures
Produits isolants thermiques pour les installations industrielles —
Détermination du coefficient de dilatation thermique linéique à des
températures inférieures à la température ambiante
Reference number
ISO 23766:2022(E)
© ISO 2022

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ISO 23766:2022(E)
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© ISO 2022
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Published in Switzerland
ii
  © ISO 2022 – All rights reserved

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ISO 23766:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Method A — Optical method .1
4.1 Principle . 1
4.2 Apparatus . 2
4.2.1 Light source system . 2
4.2.2 Light detector system . 2
4.2.3 Test chamber and cooling system . 2
4.2.4 Temperature-measuring instruments . 3
4.2.5 Equipment to prepare the test specimen . 3
4.3 Test specimen . 3
4.3.1 Dimensions of test specimens . 3
4.3.2 Preparation of test specimens . 3
4.3.3 Number of test specimens . . 3
4.4 Conditioning of test specimens . 3
4.5 Procedure . 4
5 Method B — Displacement method . 4
5.1 Principle .
...