Calculating extract recovered Flashcards
(23 cards)
What is the Specific Gravity measured at 20˚C used for?
It is used to calculate the recovered extract
What is the density of water at 20˚C?
0.9982 kg/L
What is the density of water at 75˚C?
0.9748 kg/L
What percentage increase in density occurs between wort at 75˚C and 20˚C?
2.3%
What must be done to the wort volume measured at 75˚C?
It needs to be reduced by 2.3% unless there is automatic temperature compensation
What is meant by ‘kettle full’?
It refers to when the wort collection to kettle is complete
How is kg of extract calculated?
kg extract in wort = hL x ˚Plato x density
What is the density of wort at SG 1.062 adjusted for temperature?
1.060 kg/L
How is ˚Plato calculated from SG?
˚Plato = (190.74 x SG³) – (800.47 x SG²) + (1,286.4 x SG) – 676.67
What is the ˚Plato value when SG is 1.062?
15.14
What is the total kg of extract calculated for 482 hL at SG 1.062?
7,735 kg
What was the added extract in the calculation?
7,790 kg
How is extract efficiency calculated?
(recovered extract / added extract) x 100
What is the extract efficiency based on the recovered extract of 7,735 kg?
99.30%
What is the formula for calculating recovered hL˚ of extract?
hL x ˚gravity
What is the total hL˚ of extract calculated for 482 hL at SG 1.062?
29,884 hL˚
What is the added hL˚ in the calculations?
30,086.5 hL˚
What is the extract efficiency based on the recovered hL˚ of 29,884?
99.33%
Fill in the blank: The malt extract dry is _______ w/w or 308.5 L˚/kg.
80%
What is the moisture content of the malt?
4% w/w
What is the SG of the wort recovered in the example data?
1.055
What is the volume of wort recovered in the example data?
428 hL
What is the ˚Plato of the wort recovered in the example data?
13.54
