OMT tube size for the evaporator: Ambiano Ice Cube Machine, Industrial Ice, Ice Cube Maker, Bagged Ice Dispenser,Space Saving Ice Cube Maker. Small ice block machine for beginners: These ice machines, which are suitable for small commercial businesses or even home use, can cost anywhere from $1,800 to $5,000. Ice block size available will be from 2.5kg to 10kg. The product will supply to all over the world, such as Europe, America, Australia,Saudi Arabia, Netherlands,St. Petersburg, Sweden.Ice cooling methods: the way to form the ice, there are mainly two in OMT ICE. The latest one we called it direct cooling (where refrigerant flows through tubes in the ice molds) another one is indirect cooling, we called it brine water cooling, where the molds are submerged in a bath of saltwater or glycol.