Spread sheets. - Home Brew Forums

 Home Brew Forums > Spread sheets.

12-04-2006, 01:55 PM   #1
Orfy
For the love of beer!

Recipes

Sep 2005
Cheshire, England
Posts: 11,732
Liked 99 Times on 62 Posts

=Batch_Size-((total_wort)-Kettle_Loss-((Boil_Loss/60)*Boil_Time))

My formulae are getting longer and my heads battered.
__________________
GET THE GOBLIN
Have a beer on me.

12-04-2006, 04:23 PM   #2
Orfy
For the love of beer!

Recipes

Sep 2005
Cheshire, England
Posts: 11,732
Liked 99 Times on 62 Posts

What the formula for effieciency?

Say I know that the predicted SG is 1050 @ 70% effieciency on 30l run off.

I have 1045. How do I work out my effieciency?
__________________
GET THE GOBLIN
Have a beer on me.

12-04-2006, 07:12 PM   #3
jcarson83

Recipes

Jun 2006
Springfield, MO
Posts: 928
Liked 16 Times on 11 Posts

It would be your 1045 divided by the predicted gravity, before your efficiency correction.

.0714 * y = .045

But you efficiency looks different than mine. I may be over simplifying it.

12-04-2006, 07:36 PM   #4
Orfy
For the love of beer!

Recipes

Sep 2005
Cheshire, England
Posts: 11,732
Liked 99 Times on 62 Posts

Quote:
 Originally Posted by jcarson83 It would be your 1045 divided by the predicted gravity, before your efficiency correction. .0714 * y = .045
45/50*70

0.9*70

63%

Is that what you mean?

Not sure how that relates to .0714 * y = .045
__________________
GET THE GOBLIN
Have a beer on me.

12-04-2006, 07:44 PM   #5
jcarson83

Recipes

Jun 2006
Springfield, MO
Posts: 928
Liked 16 Times on 11 Posts

No.

y = .045/.0715 = .6294 or 63%

12-04-2006, 08:08 PM   #6
Orfy
For the love of beer!

Recipes

Sep 2005
Cheshire, England
Posts: 11,732
Liked 99 Times on 62 Posts

Quote:
 Originally Posted by jcarson83 No. y = .045/.0715 = .6294 or 63%
Where does the .0715 come from.

Doing it my way I got 63% same as you.
__________________
GET THE GOBLIN
Have a beer on me.

12-04-2006, 09:03 PM   #7
jcarson83

Recipes

Jun 2006
Springfield, MO
Posts: 928
Liked 16 Times on 11 Posts

Thats 100% efficiency. Most of the stuff I've found on different malts and grains gives you the gravity at 100% then you reduce it.

12-05-2006, 02:29 AM   #8
Dude
Will work for beer

Recipes

Jan 2005
Knob Noster, Missouri
Posts: 8,770
Liked 89 Times on 70 Posts

Take the formula from my spreadsheet. I can't seem to find the original spreadsheet link from BYO where I got mine, but mine came right from that.

__________________
On Tap: Lake Walk Pale Ale -- Eternity (Raspberry Stout) -- Nutrocker -- Donnybrook Dark
Primary: Lake Walk Pale Ale
Secondary: Summit IPA
Up Next: Smoked Porter -- Pub Ale -- Watermelon Wheat
Planning:
Gone But Not Forgotten:

www.IronOrrBrewery.com