BS EN ISO 15758:2014
Current
The latest, up-to-date edition.
Hygrothermal performance of building equipment and industrial installations. Calculation of water vapour diffusion. Cold pipe insulation systems
Hardcopy , PDF
English
31-05-2014
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Calculation formulae
5 Boundary conditions
6 Calculation procedure
Annex A (informative) - Examples
Annex B (informative) - System with capacity for
drying and experimental determination of
evaporation rate from surface of wet wick
fabric
Bibliography
Provides 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.
| Committee |
B/540
|
| DevelopmentNote |
Supersedes BS EN 14114 & 12/30242979 DC. (05/2014)
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard 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.
This International Standard 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.
| Standards | Relationship |
| EN ISO 15758:2014 | Identical |
| ISO 15758:2014 | Identical |
| ISO 13788:2012 | Hygrothermal performance of building components and building elements — Internal surface temperature to avoid critical surface humidity and interstitial condensation — Calculation methods |
| ISO 9346:2007 | Hygrothermal performance of buildings and building materials — Physical quantities for mass transfer — Vocabulary |
| DIN 4140:2014-04 | Insulation work on industrial installations and building equipment - Execution of thermal and cold insulations |
| ISO 12572:2016 | Hygrothermal performance of building materials and products Determination of water vapour transmission properties Cup method |
| ISO 12241:2008 | Thermal insulation for building equipment and industrial installations Calculation rules |
| AGI Q 112 : 1980 |
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