Another type evaporator, immersed in the fluid pressure beverage cooler. The liquid refrigerant is carried out in a tube immersed in a cooled drink. Drink himself is under pressure. Construction is similar to that of a liquid receiver with water-cooled condenser. This design is quite common for instant cold water coolers. Temperature of the drink should never be low enough to freeze or less.
Metal beverage evaporator has a high thermal conductivity of aluminium. Two separate copper pipes, coiled (spiral) design. They are in a permanent form. Liquid aluminium is poured into the mold. Molten aluminum cools and solidifies. Two pipes is completely enclosed in the form of a hollow cylinder made of aluminium.
The heat transfer is excellent. The refrigerant evaporates in one coil. The heat passes from the liquid in the other coil. The coil is made by casting. This makes it strong enough to withstand the pressure freezing of water in it.
Coolers can be three or more separate closed aluminium tube when more than one fluid must be cooled. Stainless steel tubing can also be used. For processing and storage of drinks, this is the only suitable material.
Industrial 