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Thread: Beer loss between process steps

  1. #1
    Join Date
    Oct 2002
    Location
    Sweden
    Posts
    134

    Beer loss between process steps

    I would like to hear from others experience about how big loss of wort/beer from kettle-whirlpool-chiller-fermenter-lagering-filtration.

    How much volume disapear during fermentation?
    What is the volume difference between hot wort and wort at 20 deg. celsius?

    /Bjorn Falkestrom

  2. #2
    Join Date
    Mar 2003
    Location
    Baton Rouge, LA
    Posts
    618

    Brewing efficiency

    "I would like to hear from others experience about how big loss of wort/beer from kettle-whirlpool-chiller-fermenter-lagering-filtration. How much volume disapear during fermentation?
    What is the volume difference between hot wort and wort at 20 deg. celsius?"

    -I try to keep at or above 90% efficiency. That is 90% of my kettle volume ends up in the serving tank. If you are bottling this may be a high goal though.
    Remember to adjust for hot / cold wort differnce: (hot X .96 = cold)
    The places you loose volume and should be looked at if you have concerns are:
    Kettle/whirlpool- use of kettle finings improves hop/trub pile and gives more wort. Also look at where you drawoff point is. Is there a design flaw that could be fixed w/ some welding?
    Transfer- How much wort is left in hoses/heart exchanger. A capture system (sanitary of course) or a water chase could help here.
    Fermentor- Look at the stand pipe/racking arm, are you getting all the beer out? Also how much yeast crop do you have- +yeast growth = + beer loss.
    filtering- Contrary to some, a plate/sheet fiter should leek very little beer. Look at pad quality and fit ie. gasgets on filter and consider spacers for tighter fit. I sacrifice 2 sheets on each end to get less leeking- a bargin for $2.20 if I save only one pint!
    Transfer agian- a water chase or in my case Co2 purge helps clear lines and filter-
    If you are a pub brewer remember a little work / Time pays off. At $4 a pint a 10th of a bbl extra = $99 gross revenue. Remember to always think cost/savings. It could be depending on your system cheeper to lose some beer.
    Operations Director, Tin Roof BC
    ted@tinroofbeer.com
    "Your results may vary"

  3. #3
    Join Date
    Nov 2003
    Posts
    99
    The mass density of pure water at 98C and 1 atm is 950 kg/m, whereas at 20C it is 1011 kg/m.

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