I dont have beersmith so I have been doing my efficiency calculations by hand using Palmers book How to Brew as a guide. Recently, when I asked a brewing buddy to put a recipe into beersmith I discovered that my hand calculations dont match beersmiths numbers. Im sure I am doing something wrong and I would like to figure out what it could be. I was hoping another brewer could help me out.
This is the recipe: 7.5 lbs maris otter, 3.5 lbs two-row and 1.5 lb wheat collected 6.5 gallons of wort and had a 1.060 BG gravity.
In one of the chapters in Palmers book, What to expect when youre extracting, he assigns points to various grains. For max efficiency, he gives 38 points for two-row, 37 points for wheat and he does not assign a value for Maris Otter so I guessed 37 for Maris. Palmer says to multiply the points per pound then divide by the amount of wort collected into the kettle (38 x 3.5, 37 x 9 = 466 then divide by 6.5 = 71.6). Palmer says this is the max extraction efficiency from these grains 1.071. (Someone let me know if I am wrong).
The 6.5 gallons of wort that I collected in my kettle had a BG of 1.060. Palmer says to divide 60/71 and you get your efficiency for this brew day I calculated 84.5% efficiency.
The beersmith calculation my brewing buddy did said I got 73% efficiency. That is quite a difference. What am I doing wrong?
Palmer also indicates that you can calculate your efficiency by points per gallon. I calculated that with 12.5 lbs, collecting 6.5 gallons into my kettle and a OG of 1060 I got 31 points per gallon from my mash. Apparently anything over 30 is good. Does anyone else calculate their points per gallon? Have I calculated this wrong too?
This is the recipe: 7.5 lbs maris otter, 3.5 lbs two-row and 1.5 lb wheat collected 6.5 gallons of wort and had a 1.060 BG gravity.
In one of the chapters in Palmers book, What to expect when youre extracting, he assigns points to various grains. For max efficiency, he gives 38 points for two-row, 37 points for wheat and he does not assign a value for Maris Otter so I guessed 37 for Maris. Palmer says to multiply the points per pound then divide by the amount of wort collected into the kettle (38 x 3.5, 37 x 9 = 466 then divide by 6.5 = 71.6). Palmer says this is the max extraction efficiency from these grains 1.071. (Someone let me know if I am wrong).
The 6.5 gallons of wort that I collected in my kettle had a BG of 1.060. Palmer says to divide 60/71 and you get your efficiency for this brew day I calculated 84.5% efficiency.
The beersmith calculation my brewing buddy did said I got 73% efficiency. That is quite a difference. What am I doing wrong?
Palmer also indicates that you can calculate your efficiency by points per gallon. I calculated that with 12.5 lbs, collecting 6.5 gallons into my kettle and a OG of 1060 I got 31 points per gallon from my mash. Apparently anything over 30 is good. Does anyone else calculate their points per gallon? Have I calculated this wrong too?