Just sorting out some notes from my first brew and needed some help with grain absorption. Given the below variables;
-10.2 pounds of grain
-4 gallons of strike water
-2.75 gallons of first runnings
-.25 gallons of MT dead space
Secondly, do grain absorption rates change based on grain, strike, etc.
I find that if I calculate grain absorption at .12 qt./lb. it’s pretty darn close. It does vary a bit with crush and grain type, but not enough to worry about.
For clarity, the absorption rate being referenced above is in the .12 gallons per pound range, right? I have always just figured a pint per pound for a horseback estimate. I have so little dead space as to not be worth calculating that part, but YMMV. Maybe a half cup to a cup, at most below the pickup tube.
same here…almost no dead space and that’s how i have it configured in beer smith. my absorption is .12gal/lb…so i collect precisely the amount of projected wort every time.
I was wondering if my system was freakishly efficient for a minute there. I actually get .10 gal per pound too. 0.15 gallons left for mash tun deadspace.