Volume by inches?

Discussion in 'Feature Requests' started by itinerantbrewer, Nov 14, 2018.

  1. itinerantbrewer

    itinerantbrewer New Member

    Joined:
    Jul 1, 2012
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    1
    Gender:
    Male
    Location:
    Seoul, South Korea
    How about adding a feature that allows the required water volumes to also be displayed in inches?

    I do BIAB batches in a big kettle and don't want an additional "thing", like a sightglass, to get in the way. Thus, I've been measuring volumes in inches with a nice SS yardstick. When the mash step says the recipe calls for 15.5 gallons, it would show as "start with 15.5 gallons (xxqts, xx.x inches, xx centimeters)". This could be pulled from your equipment profile if you could enter kettle volume and height. Other (obviously inferior!) BIAB calculators do this (eg priceless brewing).
     
  2. White Haus Brews

    White Haus Brews Active Member

    Joined:
    Jun 30, 2018
    Messages:
    251
    Likes Received:
    136
    Trophy Points:
    43
    Occupation:
    Nurse
    Location:
    Santa Cruz Mountains, CA
    Just out of curiosity, why don't you mark the volume measurements on your SS yardstick?
     
  3. oliver

    oliver Well-Known Member

    Joined:
    Sep 21, 2015
    Messages:
    959
    Likes Received:
    371
    Trophy Points:
    63
    Occupation:
    LHBS owner
    Location:
    NOLA
    it's a good idea but, but all kettles are slightly different. wider kettles would show a volume in less height than a taller skinnier kettle.
     
  4. itinerantbrewer

    itinerantbrewer New Member

    Joined:
    Jul 1, 2012
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    1
    Gender:
    Male
    Location:
    Seoul, South Korea
    yep, that works too. But the "volume in inches" is stored in the cloud for ever while I might lose my custom yardstick!
     
  5. ChicoBrewer

    ChicoBrewer Well-Known Member

    Joined:
    May 12, 2018
    Messages:
    908
    Likes Received:
    912
    Trophy Points:
    93
    Gender:
    Male
    Occupation:
    Healthcare IT Manager
    Location:
    Chico, CA
    V=pi (r*r) h

    Jr. high geometry

    All the program needs is the radius of your Kettle. Store it in your profile.
     
    Trialben and itinerantbrewer like this.
  6. itinerantbrewer

    itinerantbrewer New Member

    Joined:
    Jul 1, 2012
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    1
    Gender:
    Male
    Location:
    Seoul, South Korea
    I think it should be standard as long as it pulls from your specific kettle specs. there's some formula for a cylinder's volume determined by diameter and height. or do you mean our kettles aren't perfect cylinders? That's probably true but I'd think it'd be minor. e-brewers also lose a bit depending on element size (bigger=less volume)
     
  7. jmcnamara

    jmcnamara Well-Known Member

    Joined:
    Aug 29, 2012
    Messages:
    2,457
    Likes Received:
    1,947
    Trophy Points:
    113
    Gender:
    Male
    Location:
    Rosedale, MD
    there's a thread on here somewhere where someone etched markings onto their kettle directly. they may have accidentally did them backwards, but other than that it seemed to work fine.
    Then you don't need a cloud or a stick!
     
    Trialben and ChicoBrewer like this.
  8. ChicoBrewer

    ChicoBrewer Well-Known Member

    Joined:
    May 12, 2018
    Messages:
    908
    Likes Received:
    912
    Trophy Points:
    93
    Gender:
    Male
    Occupation:
    Healthcare IT Manager
    Location:
    Chico, CA
  9. Nosybear

    Nosybear Well-Known Member

    Joined:
    Jul 16, 2012
    Messages:
    9,400
    Likes Received:
    6,641
    Trophy Points:
    113
    Location:
    Aurora, CO, USA
    Agreed. Volume in inches doesn't make sense to my engineering brain, although I think I know what you mean. The biggest reason is that you have to calibrate the sight glass to the pot. The same thing holds true if you create a dipstick, my suggested solution to your problem. You can use the formula or you can pour measured volumes into the pot and mark it (actually, I'd measure the first due to the join of the pot and the base, then use Chico's formula for the rest of the marks). I did the etching thing, too, then went back to the dipstick. Easier to see. And yes, kettles aren't perfect cylinders (say it ain't so!), but they're close enough that the variation doesn't matter, again, depending on departures from cylindrical shape.

    The formula, v=p*r^2*h, is correct. It gives you cubic whatever units you're using. If you're metric, a thousand CC is a liter. If English, a gallon is 231 cubic inches (where did they get that number?). You're interested in height, so h=v/(pi*r^2). Be careful to use the same units for each.
     
  10. thunderwagn

    thunderwagn Well-Known Member

    Joined:
    Sep 5, 2015
    Messages:
    3,745
    Likes Received:
    7,282
    Trophy Points:
    113
    Gender:
    Male
    Location:
    Loveland, CO
    I think I requested the same thing several years ago when I was doing BIAB. I always used priceless brewing calculator and it worked like a champ. I wouldn't think it would be hard to implement the same here. The water volume measurement discussion pops up here often enough to warrant said feature imo.
     
  11. Trialben

    Trialben Well-Known Member

    Joined:
    Mar 30, 2016
    Messages:
    9,440
    Likes Received:
    9,507
    Trophy Points:
    113
    Gender:
    Male
    Occupation:
    Pest control tech
    Location:
    Palmwoods QLD
    And remember heat shrinkage! I notched my sight glass 21 lt mark with IC in but I did it cold. And that can trick you thinking you're on target only to cool wort and find you've lost volume through shrinkage...:confused:
     
  12. ChicoBrewer

    ChicoBrewer Well-Known Member

    Joined:
    May 12, 2018
    Messages:
    908
    Likes Received:
    912
    Trophy Points:
    93
    Gender:
    Male
    Occupation:
    Healthcare IT Manager
    Location:
    Chico, CA
    Losing volume through shrinkage sounds terrifying. I think there's a pill for that
     
    Trialben and thunderwagn like this.
  13. Trialben

    Trialben Well-Known Member

    Joined:
    Mar 30, 2016
    Messages:
    9,440
    Likes Received:
    9,507
    Trophy Points:
    113
    Gender:
    Male
    Occupation:
    Pest control tech
    Location:
    Palmwoods QLD
    :Dnot there yet!
     
  14. Nosybear

    Nosybear Well-Known Member

    Joined:
    Jul 16, 2012
    Messages:
    9,400
    Likes Received:
    6,641
    Trophy Points:
    113
    Location:
    Aurora, CO, USA
    It corrects 4% of the volume.
     
  15. Nosybear

    Nosybear Well-Known Member

    Joined:
    Jul 16, 2012
    Messages:
    9,400
    Likes Received:
    6,641
    Trophy Points:
    113
    Location:
    Aurora, CO, USA
    Might be implemented as a profile thing: You provide the diameter of the kettle (assumed cylindrical) in inches/cm and the depth of liquid in inches/cm, the software provides the volume... Maybe as a calculator, enter diameter, depth and units of measure and get a result. But it's just as easy to punch π*(d/2)^2*h/231 into a hand calculator or a spreadsheet for me to get gallons (if you work in CM, divide by 1000 to get liters. God I love metric units!).
     
  16. KC

    KC Active Member

    Joined:
    Feb 25, 2015
    Messages:
    323
    Likes Received:
    179
    Trophy Points:
    43
    Location:
    NY Capital
    The temperature compensation in BF is useful there, if the volume graduations are calibrated to a known temperature. There are still measurement problems when there's a coil in the wort. I'd like to see that variable in the equipment profile. Otherwise you need a second set of marks for measuring volume with an immersion chiller
     
  17. Trialben

    Trialben Well-Known Member

    Joined:
    Mar 30, 2016
    Messages:
    9,440
    Likes Received:
    9,507
    Trophy Points:
    113
    Gender:
    Male
    Occupation:
    Pest control tech
    Location:
    Palmwoods QLD
    Yep when taking volume reading depending how big the IC is I found it'll displace a fair bit of want and skew readings by over a litre and then there is wort shrinkage (gotta get that checked out) from cooling.
     
  18. Craigerrr

    Craigerrr Well-Known Member

    Joined:
    Mar 14, 2018
    Messages:
    4,701
    Likes Received:
    6,903
    Trophy Points:
    113
    I just measured the displacement of my chiller so I can do a manual calculation to watch volume.
     
  19. Nosybear

    Nosybear Well-Known Member

    Joined:
    Jul 16, 2012
    Messages:
    9,400
    Likes Received:
    6,641
    Trophy Points:
    113
    Location:
    Aurora, CO, USA
    Also, the chiller is effectively a cylinder as well, same formula applies, pi*r^2*length. Subtract that from the volume. It won't be much.
     
  20. Craigerrr

    Craigerrr Well-Known Member

    Joined:
    Mar 14, 2018
    Messages:
    4,701
    Likes Received:
    6,903
    Trophy Points:
    113
    Mine was 0.3 gallons, so not much, but beats pulling the chiller out to check kettle volume
     

Share This Page

arrow_white