Thermal insulation materials made of rigid polyurethane foam

2.1.1 Thermal conductivity and thermal resistance of insulation materials Thermal conductivity (λ) is a specific material property. It represents the heat flow in watts (W) through a 1 m² surface and 1 m thick flat layer of a material when the temperature difference between the two surfaces in the direction of heat flow amounts to 1 Kelvin (K).

  Thermal, Material, Materials thermal