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This document discusses a new European standard for declaring the aged thermal conductivity of factory-made rigid polyurethane foam insulation boards. It describes two methods in the standard - the fixed increment method and accelerated aging method. The fixed increment method adds a set increment to the initial conductivity based on factors like thickness and facing material. The accelerated aging method measures conductivity after 25 weeks of aging samples at 70°C and adds a safety increment. The document
- Author
- Ngô Xuân Hà
- Language
- EN