ISO 15758:2014

Hygrothermal performance of building equipment and industrial installations — Calculation of water vapour diffusion — Cold pipe insulation systems

Publication date: May 5, 2014

General information

Current stage: 90.93 Effective date: Mar 24, 2021

Originator: ISO

Owner: ISO/TC 163/SC 2

Type: International Standard

ICS: 91.120.10 91.140.01

Languages: English French

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Status: Published

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Scope

ISO 15758:2014 specifies a method for calculating the density of the water vapour flow rate in cold pipe insulation systems, and the total amount of water diffused into the insulation over time. The calculation method presupposes that water vapour can only migrate into the insulation system by diffusion, with no contribution from airflow. It also assumes the use of homogeneous, isotropic insulation materials so that the water vapour partial pressure is constant at all points equidistant from the axis of the pipe.
ISO 15758:2014 is applicable when the temperature of the medium in the pipe is above 0 °C. It applies to pipes inside buildings as well as in the open air.

Life cycle

PREVIOUSLY

Revises
ISO 15758:2004

NOW

PUBLISHED
ISO 15758:2014
90.93 Standard confirmed
Mar 24, 2021

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