Originally Posted by ChemE
Actually, you should get superior lautering efficiency from a tall narrow grainbed all other things being equal.
Maybe I am overthinking this. When I toured the AB plant, the Mash Tun was about 70 feet diameter and the grain bed was about 14"-18" thick. They use differential pressure instrumentation to determine how compacted the grain bed is. Plus they rake the top of the grainbed to prevent channeling.
I know this is overkill, but if the Hight to Dia. ratio is mimiced I think it should help. I have even toyed around with the idea of of an adjustable height grain bed rake.
Primary:Black Friday Pale
Bottled: Founder's Breakfast Stout, Preto Branco (Black Orchard clone)
Kegged:Brown, WCIPA, orange cascade, Amber, Vanilla Porter
On Deck: APA, RyeIPA, Kolsch