Hi all I need an some help on thermodynamics. I want to install a camera outside of my house, but the camera can only operate between 0 and +55 degrees celsius. Now I want to make an isolating box around it, and wanted to calculate how thick the material of the box should be to allow outside temperatures between -10 and 40 degrees celsius. I know that if the camera is on, its power is 50Watt. On wikipedia I found that the heat capacity of air is 20.85 J/(mol.K). If I assume the camera is a point source of heat, located in the middle of a rectangular box, how can I calculate the temperature at the interior walls of the box, assuming the outside environment is an infinite reservoir at either -10 degrees C or +40 degrees. Many thanks for your help!!