The goal of this research project is to understand how convective heat transfer affects granular materials in a rotary drum. This was accomplished by studying two different variables and controlling the rest of the variables. The two variables that were tested were the fill levels and rotation rates. A three by three factorial was conducted with a total of 27 different experiments. This research integrates energy properties by optimizing how the particles will be used in industry and it will allow industry to become more sustainable by decreasing the amount of particles required.