Slurry ice

It can be packed inside a container as dense as 700 kg/m3, the highest ice-packing factor among all usable industrial ice.

The spherical crystals have good flow properties, making them easy to distribute through conventional pumps and piping and over product in direct contact chilling applications, allowing them to flow into crevices and provide greater surface contact and faster cooling than other traditional forms of ice (flake, block, shell, etc.).

Slurry ice is also used in direct contact cooling of products in food processing applications in water resistant shipping containers.

The inner surface of the inner tube is wiped using a mechanism which in the original Sunwell design consists of a central shaft, spring-loaded plastic blades, bearings, and seals.

An immiscible primary refrigerant evaporates to supersaturate the water and form small, smooth crystals.

With direct contact chilling, there is no physical boundary between the brine and the refrigerant, increasing the rate of heat transfer.