Problem with sparge water (BeerSmith) - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Brewing Software > Problem with sparge water (BeerSmith)

Reply
 
Thread Tools
Old 02-08-2013, 04:40 PM   #1
chavesd
Recipes 
 
Feb 2013
Posts: 3


Hey guys. I'm new to this forum and this is my first post.

I'm having some trouble with the BeerSmith calculation of the total sparge water. I added my equipment, made my own mash profile, and I'm pretty sure I made all the proper calculations and didn't miss anything.

I'm attaching a printscreen for a better analysis:



I changed for metric units becouse I'm from Brazil.

As you can see, BeerSmith is telling me to add 17,73L of water in the first mash step, and then use 17,64L of sparge water.
The Est Pre-Boil Vol = 27,31L. And here is the weird part.

17,73 + 17,64 = 35,37

35,37 - 27,31 = 8,06

Is BeerSmith assuming that I will somehow lose 8L of water from nowhere, just during the mash?

The deadspace is already included in the first 17,73L, and I'm almost sure I will NOT lose this quantity of 8L of water.

Where is it my mistake?

Thanks!

 
Reply With Quote
Old 02-08-2013, 08:22 PM   #2
fixitoscar
 
fixitoscar's Avatar
Recipes 
 
Feb 2011
IE, california
Posts: 274
Liked 24 Times on 19 Posts


the grain will absorb the extra water.
6.06l grain apsorbtion + 2l mashtun dead space = 8.06 extra water needed

 
Reply With Quote
Old 02-09-2013, 01:10 AM   #3
chavesd
Recipes 
 
Feb 2013
Posts: 3

That's true. I didn't notice this grain absorption. Thanks!

But I still don't believe that the Pre Boil Vol will be 27,31. I think it will be more, with a lower Pre Boil Gravity.

 
Reply With Quote
Old 02-09-2013, 02:46 AM   #4
duboman
Recipes 
 
Jul 2011
Glenview, IL
Posts: 6,368
Liked 508 Times on 470 Posts


Quote:
Originally Posted by chavesd
That's true. I didn't notice this grain absorption. Thanks!

But I still don't believe that the Pre Boil Vol will be 27,31. I think it will be more, with a lower Pre Boil Gravity.
The math isn't correct and I think you need to go back to your equipment profile and verify the inputs for losses like dead space for tun and kettle and the check boxes to calculate because something is off
__________________
Nothing Left to do but smile and drink beer.....

The Commune Brewing Company-Perfecting the "art" of beer since 2010

 
Reply With Quote
Old 02-09-2013, 03:09 AM   #5
Cathedral
HBT_SUPPORTER.png
 
Cathedral's Avatar
Recipes 
 
Dec 2012
Toledo, Ohio
Posts: 913
Liked 282 Times on 200 Posts


it might have a lot to do with your estimated mash efficiency being around 79%

If you have much lower efficiency, then yeah your preboil OG will be much lower with that volume.
__________________
TOOTH:HURTY Picobrewery
On Deck:
Primary: empty :(
Kegged: empty :(

 
Reply With Quote
Old 02-09-2013, 03:14 PM   #6
chavesd
Recipes 
 
Feb 2013
Posts: 3

Quote:
Originally Posted by duboman View Post
The math isn't correct and I think you need to go back to your equipment profile and verify the inputs for losses like dead space for tun and kettle and the check boxes to calculate because something is off
Well, as I said, I think everything is correct on my equipment setup:



The thing is that I'm not convinced that the grain will absorb 6,06L of water.

 
Reply With Quote
Old 02-09-2013, 04:23 PM   #7
duboman
Recipes 
 
Jul 2011
Glenview, IL
Posts: 6,368
Liked 508 Times on 470 Posts


I'll do my best with the metric conversions............

Absorption should be .45L/.45kg (US would be .12gallons/lb)
Mash in should be 1.42L/.45kg (US would be 1.5qts/lb)

So you can take your mash in strike volume, deduct absorption and that would equal your collected first runnings (Minus any mash tun dead space you have accounted for)

After you calculate first runnings then the amount of volume you need to sparge would be the amount of water you need to meet your required pre-boil volume (There is no further abosrption as the grain is already saturated.)

What I would do is run water through your mash tun to verify dead space, after draining measure any volume of water left in the tun without tipping it to drain and enter that volume in your profile.

Next time you brew take careful volume measurements of your strike volume and first runnings to verify what you get in absorption per kg and then if necessary tweak that measurement in Beersmith. Also take careful measurements of any further losses and volumes you are not certain of so you can tweak those in the software.

IME it takes a couple of brew sessions to get everything dialed in so the software works smoothly. All calculations are based upon your equipment profile so if anything is off there all recipe calculations will be off as well.
__________________
Nothing Left to do but smile and drink beer.....

The Commune Brewing Company-Perfecting the "art" of beer since 2010

 
Reply With Quote
Old 02-13-2013, 05:40 PM   #8
jdauria
HBT_SUPPORTER.png
 
jdauria's Avatar
Recipes 
 
Sep 2010
Braintree, Massachusetts
Posts: 637
Liked 56 Times on 49 Posts


This may be a dumb question, but could his issue be that he is using a comma instead of a decimal point in Beersmith?
__________________
Primary - Empty :-(
Secondary -Lift Your Kilt to Wee Heavy
Kegged - Jane Rae's Amber 2.0, Pumpkin Palooza
Brewed on Pro system - Jane Rae Amber rum aged at Barrel House Z.

 
Reply With Quote
Old 02-13-2013, 07:33 PM   #9
duboman
Recipes 
 
Jul 2011
Glenview, IL
Posts: 6,368
Liked 508 Times on 470 Posts


Quote:
Originally Posted by jdauria
This may be a dumb question, but could his issue be that he is using a comma instead of a decimal point in Beersmith?
I saw that as well but he's using metric and it might default that way as I've read other posts with screen shots and they all show commas instead of decimals-odd and worth asking
__________________
Nothing Left to do but smile and drink beer.....

The Commune Brewing Company-Perfecting the "art" of beer since 2010

 
Reply With Quote
Old 02-13-2013, 07:48 PM   #10
PupThePup
Registered User
Recipes 
 
Dec 2012
Posts: 104
Liked 12 Times on 10 Posts


Quote:
This may be a dumb question, but could his issue be that he is using a comma instead of a decimal point in Beersmith?
The comma is displayed as part of the number formatting for the Region/Location selected in the Windows Operating system.

If you would like commas displayed also, simply change your Region/Location in the control panel to a Region/Location that supports commas as decimals (pretty much anywhere but the US/Canada?).

The US uses commas for digit grouping and periods as decimal points 123,456,789.00.

Other parts of the world use periods for digit grouping and commas as decimal points 123.456.789,00.

I haven't researched the history of this.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
4th Batch, 1st AG - Water, BeerSmith, Batch Sparge Questions delucr Beginners Beer Brewing Forum 10 12-20-2011 01:50 AM
Sparge water temp off. Problem? volvodude All Grain & Partial Mash Brewing 7 03-02-2010 04:02 PM
Beersmith and sparge water MattHollingsworth Brewing Software 7 06-14-2009 06:47 AM
Low Sparge Water Temp... possible problem? Blizzz All Grain & Partial Mash Brewing 2 11-29-2007 06:39 PM
Question on BeerSmith and sparge water calc... the_bird All Grain & Partial Mash Brewing 4 12-02-2006 04:58 PM


Forum Jump