1.Kinetic Energy Transfer
Dry ice pellets are accelerated by compressed air to high speeds fracturing the top layer of dirt/residue.
2.Micro-Thermal Energy Transfer
The different materials contract unequally and the adherence between them decreases. This thermal difference helps to separate the dirt/residue from the substrate.
3.Sublimation Energy Transfer
After the dry ice makers its initial impact, it instantaneously turns from a solid to a gas The volume expansion ( by a factor of 700) causes a micro explosion that detaches the dirt/residue from the substrate.