Author Topic: Bug in the Water Avail From Mash tooltip?  (Read 355 times)

Offline andreabhb

  • BeerSmith Apprentice Brewer
  • **
  • Posts: 4
  • BeerSmith 2 Rocks!
Bug in the Water Avail From Mash tooltip?
« on: November 30, 2021, 05:39:55 AM »
In the Vols section, the Water Avail From Mash tooltip is:

"The total water available from the mash after grain and deadspace losses"

but in my example 18,79 - 5,16 = 13,63 (Tot Mash Water - Grain Absorption)

so it seems it's after grain losses but not after deadspace.

In fact, the Est Pre-Boil is: 13,63 + 18,18 - 1,80 = 30,01 (Water Avail From Mash + Spage Vol - Tun Deadspace).

See the attachment screenshot.

Am I wrong?

Thanks.

Offline BOB357

  • BeerSmith Grandmaster Brewer
  • *****
  • Posts: 686
  • Beer is my bucket list!
Re: Bug in the Water Avail From Mash tooltip?
« Reply #1 on: November 30, 2021, 08:30:51 AM »
The numbers used in the calculations, with the exception of grain absorption (see note below), all come from your equipment profile. They are user inputs. The numbers in the volumes tab you posted lead to a correct estimated bottling volume, so the calculations are correct. Your problem is likely due to measurement error, excessive boil off, one or more incorrect entries in your equipment profile, or a combination of the three.

Factory volume markings on equipment are seldom accurate and should not be used unless you've verified them. 

Boil vigor and surface are major factors affecting boil off. Boil vigor is especially hard to control when using propane or CNG as a heat source, so is always suspect. Larger kettle diameters will lead to increased boil off so, if you've changed kettles you need to update your equipment profile. Weather conditions can also affect boil off to a lesser degree.

With the exception of boil off, the volumes needed for an accurate equipment can be measured. Be sure to enter accurate measurements, and not estimate any of these volumes.

Note: The grain absorption rate is not a part of your equipment profile, but can be adjusted if found to be a contributing factor.
Bob

Offline andreabhb

  • BeerSmith Apprentice Brewer
  • **
  • Posts: 4
  • BeerSmith 2 Rocks!
Re: Bug in the Water Avail From Mash tooltip?
« Reply #2 on: November 30, 2021, 11:02:18 AM »
Sorry, maybe I'm not explaining myself correctly.

The calculations are correct.

I just think the tooltip is wrong because it says "after grain and deadspace losses" but 13,63 is the result before removing the deadspace losses (1,80).

The first part ("after grain losses") is correct.

So I guess it's a tooltip error.

Offline BOB357

  • BeerSmith Grandmaster Brewer
  • *****
  • Posts: 686
  • Beer is my bucket list!
Re: Bug in the Water Avail From Mash tooltip?
« Reply #3 on: November 30, 2021, 12:11:48 PM »
I see it now. Definitely an error in the tool tip.
Bob