P-W-F-2: "What the hell are you doing?" or "ooh, it is OK."
Schlenkerla is a historical brewpub in Bamberg, Bavaria, Germany. It is most renowned for its Aecht
On the top of the beer barrel, this is a vent, it should be open during the filling process. But in the
evening, the vent is sealed and CO2 is pumped in to maintain 2 bar (absolute) pressure.
In the past, you designed a 9/16 inch hose for the waiter to fill 1 liter glass within a short time from
One day, the waiter forget to open vent, could you predict what kinds of trouble he is creating (how
much beer runs out in the average human reaction time). How can you prevent that?
Thedimensions of a barrel
Height = 94,80 cm
We assume a cylinrical shape and the inside diameter = 60 cm
Iron hoops number = 4
Volume 225 liters
The density of Schlenkerla Rauchbier is 1.060 g/cm3
The height of the hose is 7 cm from the bottom
We assume CO2 + Air in the drum are not dissolved by the beer and the beer don’t release extra
CO2 +air in the process.
Neglect the resistance of the tubes, consider the resistance of the orifice