- Nov 21, 2010
- Reaction score
Thank you so much for the awesome explanation! I've googled in the past and it always led me to brewhouse efficiency and not conversion efficiency.max deg plato: (weight of dry grist * potential) / (weight of dry grist * potential + weight of strike water). X 100
conversion efficiency: measured deg plato/max deg plato X 100
weight of dry grist should take grain moisture under account typically, 4%. So if you have 10 pounds of base malt with an 80% yield, then the weight should be 10*0.96*0.8 = 7.68
weight of water is gallons * 8.3304 lbs/gallon.
use tables online to convert from plato and SG. Note brix and plato are not exactly the same.
OP has 11lbs of malt (To be precise we should check all the potential of the various malts and average, but it's mostly golden promise speced at 81%). 8.5 gallons of water.
Max plato: 11*0.96*0.81 / (11*0.96*0.81 + 8.5*8.3304) = 10.78 deg plato
measured plato: 9.4brix ~= 9.1 deg plato
conversion efficiency: 100 X 9.1/10.78 =~ 84%