It cools the wort in the plate heat exchanger , keeps all tanks cool, and even cools the beer up to its exit from the tap. Using glycol as a transporting agent not only saves energy, but also allows you to cool many more tanks than with a traditional ice water cooling plant . Therefore this system is used with large breweries using many tanks. See some more details under storage-supplemented cooling plant below. Traditional cooling method.
Ice water is used as a transporting agent.
This system is used with smaller breweries and is more economical within the purchasing price, but it uses more energy during use. When non-insulated tanks are used, they have to be put up in a cooling room. That means that NO individual temperature control of each tank is possible. A brewery whose fermentation and storage tanks have the double volume of the brew-house . This allows the purchase of less tanks without decrease in capacity, but it necessitates the consecutive brewing of the same kind of wort in two consecutive brewing processes.