Ageing of thermal insulation materials. Determination of the long-term change in thermal resistance of closed-cell plastics (accelerated laboratory test methods) Ingestion-build-78747 NOTE: BS EN 50318 does

NOTE: BS EN 50318 does not apply to trolley bus systems

This Recommendation | International Standard does not specify particular mechanisms to support these confidentiality services nor the full details of security management services and protocols

this document is applicable to both internal and external energy savings evaluators

in line with their objectives and available resources

Ageing of thermal insulation materials. Determination of the long-term change in thermal resistance of closed-cell plastics (accelerated laboratory test methods) Ingestion-build-78747 NOTE: BS EN 50318 does1 Scope This International Standard specifies two laboratory test methods, based on slicing and scaling techniques, to determine the long term changes in the thermal resistance of closed cell (normally 90 %) cellular plastic materials that contain gases which, through diffusion processes, affect the properties of a foam with time. Using standard methods for the measurement of thermal resistance, method A consists of periodic measurements performed