Coefficient of thermal transmission of air and common gases

Coefficients of thermal transmission (lambda) of the most common atmospheric gases (Air, Argon, Krypton and Xenon) Air is an excellent insulator, which is why it is used abundantly in insulating materials. This article is part of a general article on Lambda thermal transmission coefficients given in W / mK Air 0.025 Argon 0.017 Krypton 0.009 Xenon 0.0054 […]

Insulating power of insulating materials (glass wool, rock wool, polystyrene…)

Thermal transmission coefficients (lambda) of industrial insulating materials: wood or rock wool, expanded or extruded polystyrene, Polyurethane, Phenolic…) This article is part of a general article on Lambda thermal transmission coefficients given in W / mK Wool rock wool class RA1 0.017 Rock wool class RA2 0.041 Rock wool class RA3 0.038 […]

Thermal transmission coefficients of insulating materials

Properties of common insulating materials Keywords: insulation, insulators, insulator, materials, property, performance, performance, lambda coefficient, calculation, losses, loss, heat balance… All lambda are given in W / (mK) Calculation of thermal resistance of a wall or a wall The thermal resistance is given by the following formula: R = e / lambda With e = thickness of […]