ABSTRACT
At atmospheric pressure, the equilibrium freezing point of
pure water, T0, is 273.16K (0 C or 32F). T0 decreases by
0.0074 K/atm as pressure increases.[1] Water often has to be
subcooled before the ice crystal nuclei form. Once nuclea-
tion occurs, the temperature of the ice-water mix rises
rapidly to T0 and remains there as cooled liquid converts to
ice. When only ice exists, its temperature drops below T0 and gradually approaches that of the coolant.
