Originally Posted by D*Bo
First all grain, batch sparge with stainless braid in an Igloo cube.
10 gal batch
18 lbs of grain
149* mmash temp
11.5 gallons in the kettle (+ 1.8 qt for absorption, call it 2qt)
1.33 qt/lb 24 qts in the mash (do you add for grain absorption?)
161.8* strike water temp
My calculation came up with 12.5 qt of boiling water to add to bring the mash temp from 148 to 168.
leaves 11.5 qts to split between two sparges. Does this seem right?
If you can fit the 18# of grain + 24 qts. of strike water + 12 qts. of water to get to mashout temps, why do 2 sparges? Just do one and get it over.
Also, 18# of grain is going to absorb 2.5 gallons of water or more.
By my calculations using the tastybrew calculator, dough in with 24 qts of 161* water to get to 149*. Then add 12 qts. boiling water to get to 168*. That should yield about 6.5 gallons of wort. Then sparge with 5 gallons of water.