Heating Curve and Cooling Curve of Water Enthalpy of Fusion & Vaporization Properties of water Wikipedia The equivalent evaporation (kg hr) of a boiler producing 2000 kg hr of steam with enthalpy content of 2426 kJ kg from feed water at temperature 40C (liquid enthalpy at 4C = 168 kJ kg, enthalpy Given the phase diagram of water below, what are the values of its critical temperature and critical pressure? Also, at 0 degrees C, what kind of phase changes would occur as the