The best diameter lauter tun

Some brewers choose lauter tun which is the same size width as the mash tun. Do you prefer a German style lauter tun? The dimensions of the lauter tun should be 2:1 or 3:1 width to height.
Usually we work out the lauter tun diameter by spent grain thickness.
Let explain it with a popular model 5bbl brewhouse.
The ratio of water and malt is 1:3--1:4.
For 5bbl brewhouse, usually it needs about 150KG malt.
The volume of 150KG crushed malt is about 0.27M3.
The best thickness of spent grains is 0.3m-0.4m.(0.35m is the best)
According to the formula, V=πr²*h.
0.27=πR²*0.4 or 0.27=πR²*0.3.
Radius is 450mm to 530mm. So inner diameter of lauter tun is 900mm to 1060mm.
Add 160mm PU insulation,
So outer diameter of lauter tun is 1060mm to 1220mm.
Our standard diameter of lauter tun is 1060mm.
Brewhouse

Specially, we also created a separate lauter tun. When brewers put large amount of grain malt into mash tun to make high degree beer, a larger diameter lauter tun is needed.
Brewhouse

Let us know what kind of beer you want to brew and how many grain malt you will put, we will work out a best diameter for you.
By Emily. [email protected]

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