A glycol beer system is a type of draft beer system that is commonly used in bars, pubs, tap rooms, and restaurants to ensure that the beer is served at the perfect temperature. It is one of the two main options for beer cooling systems, with the other being forced-air.
The purpose of a glycol system is to maintain the cold temperature of the beer from the walk-in cooler, where the kegs are stored, all the way to the dispensing tower. This is important because beer is best enjoyed when it is served at the right temperature. If the beer is too warm, it can taste flat and lose its carbonation. On the other hand, if the beer is too cold, it can become overly foamy and lose some of its flavor.
So, how does a glycol system work? Well, it involves the use of a refrigeration unit, also known as a glycol chiller, which is connected to the walk-in cooler and the dispensing tower. The chiller circulates a mixture of water and glycol, a type of antifreeze, through insulated lines that run alongside the beer lines.
The glycol acts as a heat transfer medium, absorbing the heat from the beer lines and carrying it back to the chiller. This ensures that the beer lines stay cold and the beer inside them remains at the desired temperature. The chilled glycol is then pumped back to the chiller to be cooled down again, creating a continuous cycle.
One of the advantages of a glycol system is its ability to maintain consistent temperatures throughout the entire beer line. This is particularly important in long-draw systems, where the beer has to travel a significant distance from the cooler to the tap. Without the use of glycol, the beer would warm up along the way and result in an inconsistent pour.
In addition to temperature control, a glycol system also helps to reduce foam and waste. The cold beer lines prevent excessive foaming, resulting in cleaner pours and less beer being wasted. This is especially crucial for establishments that serve a high volume of beer, as it helps to minimize product loss and improve overall efficiency.
I have personally worked with glycol systems in various bars and restaurants, and I can attest to their effectiveness. They are a reliable and efficient way to ensure that the beer is served at its best, providing a satisfying experience for both the customers and the establishment.
To summarize, a glycol beer system is a cooling system that uses a mixture of water and glycol to maintain the cold temperature of draft beer from the walk-in cooler to the dispensing tower. It helps to ensure consistent temperatures, reduce foam, and minimize waste, ultimately enhancing the overall quality of the beer served.