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We want to design a mash lauter tun for a nano brewery.
Want to confirm if my calculated dimension are right.
What is the ideal grain bed depth in Mash / Latuer tun ?
There does not seem to be much consensus. Also all books talk about Lauter tun grain bed depth, not specifically about MLT grain bed depths.
Mash / Lauter tun dimensions by 2 methods.
Calculation by grain bed depth -
Calculations according to - http://haandbryg.dk/mashcalc.html
Mash Volume (liters) = (Mash thickness + 0.7) x kg malt
And a height of grain bed should in lauter tuns is about 30 - 60cms.
And height of grain beds in Infusion mash tuns is about 60 - 90 cms.
For safety we will stick to 40cm.
Average beer will need 50Kgs of grain to make around 200L of finished beer. The grain bill can be 40 - 60kgs depending on the type of beer.
Mash volume = (2.7 + 0.7) x 50 = 170L
Let’s target 40cm height
V = pi R2 H
170L = pi x R2 x 40cm
Radius = 36cm
---------------------------------
Calculation by Loading -
Use dry grist weight to target 150 - 250 Kg/ m2 of weight on the mesh screen.
Let’s take typical loading of 170 Kg/ m2
Mesh screen area = 50 / 170 = 0.2941 m2
0.2941 = pi R2
Radius = 30cm
------------------------------
Height above the mesh screen = 110cm, we need to check if the CIP spray ball, sparge shower, etc will fit.
Final Radius = 33cm, Height above wedge wire = 110cm
Am I on the right track ?
Want to confirm if my calculated dimension are right.
What is the ideal grain bed depth in Mash / Latuer tun ?
There does not seem to be much consensus. Also all books talk about Lauter tun grain bed depth, not specifically about MLT grain bed depths.
Mash / Lauter tun dimensions by 2 methods.
Calculation by grain bed depth -
Calculations according to - http://haandbryg.dk/mashcalc.html
Mash Volume (liters) = (Mash thickness + 0.7) x kg malt
And a height of grain bed should in lauter tuns is about 30 - 60cms.
And height of grain beds in Infusion mash tuns is about 60 - 90 cms.
For safety we will stick to 40cm.
Average beer will need 50Kgs of grain to make around 200L of finished beer. The grain bill can be 40 - 60kgs depending on the type of beer.
Mash volume = (2.7 + 0.7) x 50 = 170L
Let’s target 40cm height
V = pi R2 H
170L = pi x R2 x 40cm
Radius = 36cm
---------------------------------
Calculation by Loading -
Use dry grist weight to target 150 - 250 Kg/ m2 of weight on the mesh screen.
Let’s take typical loading of 170 Kg/ m2
Mesh screen area = 50 / 170 = 0.2941 m2
0.2941 = pi R2
Radius = 30cm
------------------------------
Height above the mesh screen = 110cm, we need to check if the CIP spray ball, sparge shower, etc will fit.
Final Radius = 33cm, Height above wedge wire = 110cm
Am I on the right track ?