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Brewery calculations
SPND - Spundungsdruck
This is a solver-program to calculate the carbonization pressure according to this formula:
2617.25
(- 10.73797) + ----------
t + 273.15
c(p, t) := (p + 1.013) %e 10
c: CO₂ concentration in g/l
p: Carbonization gauge pressure in bar
ϑ: Temperature in °C
https://elfring.ms/blog/rpn-karbonisierungsrechner
GFWtr - Grainfather Water Calculator
Asks for the batchvolume in l (Aussschlahmenge / Asslg) and grainbill in kg (Malz) and calculates the amount of mash- and sparge-water for grain bills > 4,5 kg according to this formula from the Grainfather manual:
MashWater = GB * 2.7 + 3.5
SpargeWater = (BV + WL) - MashWater + (GB * 0.8)
GB: Grainbill in kg
BV: Batchvolume in l
WL: Waterloss in boil & trub in l (defaults to 5)
Adjust waterloss in line 10