| Total Water | Mash Water | Sparge Water | Sparge Water/Batch |
|---|---|---|---|
| gal L | gal L | gal L | gal L |
| Values | Maximum | Expected | Measured | Projected |
|---|---|---|---|---|
| First wort Gravity | °P | °P | °P | °P |
| First wort Volume * | gal L | gal L | ||
| Pre-boil wort Gravity | °P | °P | °P | °P |
| Pre-boil wort Volume * | gal L | gal L | ||
| Original Gravity | °P | °P | °P | °P |
| Post-boil wort Volume * | gal L | gal L | ||
| in Fermenter Volume | gal L | gal L | ||
| BrewHouse Efficiency | 100% | % | % | |
| Stick to target OG | ||||
| Add water | gal L | Adjusted Postboil Volume* In Fermenter volume |
gal L gal L |
|
| Add DME | oz g | |||
| Extra Boil Time | mins | Adjusted Postboil Volume* In Fermenter volume |
gal L gal L |
| MLT Dead Space | Mash Lautering Tun dead space. For BIAB, this value is usually zero(0). |
|---|---|
| BK Dead Space | The amount of wort that won't go into fermenter after boiling. It is the sum of trub and hop loss without using hop filters. |
| Boiloff rate | Evaporation rate, in gallon or liter per hour. |
| Grain absorb rate | The rate of wort absorbed by grain. The values vary from grain to grain, system to system. 0.125 gallon/lb or 1.042 liter/kg is a reasonable value. |
| Hop absorb rate | The rate of wort absorbed by hop. Hop absorption might be accounted in BK Dead Space. Set it to zero(0) in this case. Otherwise, 0.5584 gal/lb or 4.66 L/kg is the value to try. |
| Wort expansion @ boil | The volume expansion of wort at boiling temperature compare to that at room temperature. 4%, usually. |
| Wort expansion @ Mash | The volume expansion of wort at mashing temperature compare to that at room temperature. 3%, usually. |
| Batch Size | The volume of wort goes into fermenter. |
| Boil time | Used to calculate evaporation. |
| Grain Amount | Grain amount in the brew. Target OG will be changed on change of grain amount. |
| Hop Amount | Hop amount in the brew. |
| Brew House Efficiency | Brew House Efficiency. Target OG will be changed on change of Brew house efficiency. |
| Target OG | Target Original Gravity into fermenter. Brew House Efficiency will be changed on change of Target OG. |
| Mash Thickness | Used to calculate mash water in cases of Batch Sparge and Fly Sparge. Ignored on No Sparge. |
| Sparge Type | The efficiency of fly sparge varies. Thefore, the calculation is baed on 3-batch Sparge. |
| Batch Sparge Number | The number of sparging. Maximum 3. Numbers over 3 are treated as 3. |
| Total Water | Batch Size(amount into fermenter) + Boil off + Grain Absorption + Hop Absorption + BK DeadSpace + MLT DeadSpace |
|---|---|
| Mash Water | Mash Thickness * Grain AMount + MLT DeadSpace |
| Sparge Water | Total Water - Mash Water |
| Maximum First Wort Gravity | Total sugar(gravity points) / Mash Water |
| Maximum pre-boil Wort Gravity | Calculated based on Maximum First Wort Gravity with 3-batch sparge. |
| Maximum Origin Gravity | Total sugar(gravity points) / Batch Size |
| Expected First Wort Gravity | The value to get Pre-boil gravity so that target OG can be gotten. |
| Expected First Wort Volume | Mash Water - Grain Absorption - MLT DeadSpace; The volume is "expanded" volume. |
| Expected Pre-boil Wort Gravity | Calculated by deluated target OG. |
| Expected Pre-boil Wort Volume | Expected Post-boil volume + Boil off; The volume is "expanded" volume. |
| Expected Post-Boil Wort Gravity | Target OG. |
| Expected Post-boil Wort Volume | Batch Size + BK DeadSpace + Hop Absorption; ; The volume is "expanded" volume. |
| Projected Gravity/Volume | Calculatd based on available measured inputs or expected values. |