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ISO 21901:2021

Thermal insulation — Test method for thermal diffusivity — Periodic heat method

Feb 25, 2021

General information

90.20     Jan 15, 2026

ISO

ISO/TC 163/SC 1

International Standard

27.220  

English   French  

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Scope

This document specifies a periodic heat method for measurement of the thermal diffusivity of thermal insulation material in the shape of a flat plate.

Life cycle

NOW

PUBLISHED
ISO 21901:2021
90.20 Standard under periodical review
Jan 15, 2026

REVISED BY

PROJECT
ISO/PWI 21901

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