Analytical Solution of Transient Heat Conduction through a Hollow Spherical Thermal Insulation Material of a Temperature Dependant Thermal Conductivity. jcoeng [Internet]. 2014 Jan. 1 [cited 2024 Nov. 26];20(01):78-97. Available from: https://joe.uobaghdad.edu.iq/index.php/main/article/view/1955