From the energy balance V(T_w − T₂) = c·G·(T₂ − T_g) + M·(T₂ − T_t):
T_w =T₂ + (c / r) × (T₂ − T_g) +M × (T₂ − T_t) /V
where r is litres of water per kilogram of grain, c ≈ 0.4 is the ratio of
grain's specific heat to water's, and M is the tun's thermal mass expressed
as equivalent litres of water. This is Palmer's strike formula (How to
Brew, "Mashing") stated in SI: his imperial constant 0.2 is the same 0.4
once quarts-per-pound becomes litres-per-kilogram.
Strike water temperature, °C.
From the energy balance
V(T_w − T₂) = c·G·(T₂ − T_g) + M·(T₂ − T_t):where
ris litres of water per kilogram of grain,c ≈ 0.4is the ratio of grain's specific heat to water's, andMis the tun's thermal mass expressed as equivalent litres of water. This is Palmer's strike formula (How to Brew, "Mashing") stated in SI: his imperial constant 0.2 is the same 0.4 once quarts-per-pound becomes litres-per-kilogram.