2019-02-05 20:33:55 +01:00
|
|
|
# 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
|
|
|
|
|
|
2019-11-04 23:23:05 +01:00
|
|
|
## 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
|
2019-02-05 20:33:55 +01:00
|
|
|
|
