Hi!
I've been reading this article on the BeerSmith blog: http://beersmith.com/blog/2011/10/07/parti-gyle-brewing-two-beers-from-one-mash/
Great article, Brad! I can't make sense of the equation, though...
It says: "For a 50-50 split by volume, with half of the wort in each batch we get a roughly 58% of the gravity points in the first batch. So a 1.060 overall batch OG would translate to a 1.070 first runnings and 1.050 second runnings, with both of equal size."
With these values inserted in the equation (Number_points_ runnings = (Tot_points * Points_fraction / fractional_volume), I get (60 * 0.5 / 0.5) for both the first and the second runnings, i.e. 60.
Or have I misunderstood the concept of "points_fraction"?
Thanks in advance!
/kalle.
I've been reading this article on the BeerSmith blog: http://beersmith.com/blog/2011/10/07/parti-gyle-brewing-two-beers-from-one-mash/
Great article, Brad! I can't make sense of the equation, though...
It says: "For a 50-50 split by volume, with half of the wort in each batch we get a roughly 58% of the gravity points in the first batch. So a 1.060 overall batch OG would translate to a 1.070 first runnings and 1.050 second runnings, with both of equal size."
With these values inserted in the equation (Number_points_ runnings = (Tot_points * Points_fraction / fractional_volume), I get (60 * 0.5 / 0.5) for both the first and the second runnings, i.e. 60.
Or have I misunderstood the concept of "points_fraction"?
Thanks in advance!
/kalle.