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hp42s-rpn/brewery/README.md
2019-11-04 23:23:05 +01:00

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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