I just received a 18 gal Brew In Bag (BIAB) Kettle from Stout. As an aside, solid, but could use a sight glass and thermowell port.
Stout's website says the basket will hold 29 pounds of grain.
Information I can find indicates 1.6 fl oz per oz of grain. http://www.aqua-calc.com/calculate/weight-to-volume
I design a 10 gal batch with 29 lbs of grain, which near as I can figure is 5.7 gallons.
BS says 15.8 gallons of water converting everything to fl oz gives a total volume:
2022.4 fl oz Water
742.4 fl oz Grain
2765 fl oz total=21.6 gallons
Which is right in line with adding volumes using gallons (21.5 Gallons).
Assuming an absorption of 0.586 fl oz/oz (BIAB Grain Absorb), for 742.4 fl oz of grain, that should (I'm guessing here) reduce the volume by 272 fl oz, or 2.12 gallons which is 19.38 gallons, still greater than the 18 I have to work with.
Other than trial and error, how can I figure out how much grain and water I can put in the pot for the mash? I guess I don't understand the grain volume and BIAB Grain Absorb calculations.
Also if anyone could describe how they add grain to their BIAB system after getting the water up to temperature and their experience on how much volume grain and water displace that would be very helpful.
Stout's website says the basket will hold 29 pounds of grain.
Information I can find indicates 1.6 fl oz per oz of grain. http://www.aqua-calc.com/calculate/weight-to-volume
I design a 10 gal batch with 29 lbs of grain, which near as I can figure is 5.7 gallons.
BS says 15.8 gallons of water converting everything to fl oz gives a total volume:
2022.4 fl oz Water
742.4 fl oz Grain
2765 fl oz total=21.6 gallons
Which is right in line with adding volumes using gallons (21.5 Gallons).
Assuming an absorption of 0.586 fl oz/oz (BIAB Grain Absorb), for 742.4 fl oz of grain, that should (I'm guessing here) reduce the volume by 272 fl oz, or 2.12 gallons which is 19.38 gallons, still greater than the 18 I have to work with.
Other than trial and error, how can I figure out how much grain and water I can put in the pot for the mash? I guess I don't understand the grain volume and BIAB Grain Absorb calculations.
Also if anyone could describe how they add grain to their BIAB system after getting the water up to temperature and their experience on how much volume grain and water displace that would be very helpful.