λD thermal conductivity nominal value
Europe-wide harmonised value corresponding to CE marking. Country-specific definitions apply to calculations made within the scope of the energy performance certificate to determine calculated or measured values.
Definition: Nominal heat conductivity value ("declared thermal value"), which is not exceeded by at least 90% of production (probability of acceptance 90%), valid for an average temperature of 10°C and the state of equilibrium for humidity under normal climatic conditions 23°C/50% relative atmospheric humidity.
Source: ÖNORM 6015-2
Proof:
- CE Declaration of Performance
- European Technical Approval (ETA
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