A popular application is in beverage production, wherein the food grade chemical propylene glycol is used.
Glycol chillers are a specific kind of refrigeration system, often used to cool a variety of liquids, including alcohol and other beverages.
[1] A chiller is essentially a refrigerator that includes a compressor, evaporator, condenser and a metering device.
An additional buffer tank is used with the chilling unit to provide additional system capacity to prevent excessive cycling, unexpected temperature fluctuations, and erratic system operation.
Propylene glycol, a food-grade antifreeze, is typically used when consumable products are involved.