화학공학소재연구정보센터
Journal of Materials Science, Vol.29, No.9, 2261-2273, 1994
An Assessment of Expressions for the Apparent Thermal-Conductivity of Cellular Materials
Diverse expressions for the thermal conductivity of cellular materials are reviewed. Most expressions address only the conductive contribution to heat transfer; some expressions also consider the radiative contribution. Convection is considered to be negligible for cell diameters less than 4 mm. The predicted results are compared with measured conductivities for materials ranging from fine-pore foams to coarse packaging materials. The dependencies of the predicted conductivities on the material parameters which are most open to intervention are presented graphically for the various models.